AI-FA g"AlJA[" Trifl,ñffiA g)- ü

illAB lfl4B-14124

Pioduci I'lü

Eook itlo.

Separatür ffiamuag

O!1 I ¿i l-ULa- ¡-.i,iJ

1 270276-02 V6 M#

::l,::.

Contents

2 Safety Instructions

3 Separator Basics3.1 Basic principles of separation

3.2 Overview

3.3 Separating function

3.4 Mechanicalfunction

3.5 Definitions

Operating I nstructions4.1 Operating routine

4-2 Cleaning the bowl

Service lnstructions5.1 Periodicmaintenance

5.2 Maintenance Logs

eg MS - Check points

5.4 Gleaning

5.5 When changing oil

5.6 Common maintenance directions

5.7 Liftinginstructions

Dismantling/Assembly6.1 General

6.2 Dismantling

6.3 Assembly

6.4 Feed and discharge pumps

6.5 Frame feet

Read this first

t5

16

2A

21

28

32

33

34

41

45

46

49

54

69

73

74

79

81 .

82

83

93

102

111

3

7 Trouble-tracing

7.1 Troubletrac¡ng procedure

7.2 Mechanical function

7.3 Purification faults

7.4 Clarification faults

lndex

Technical Reference

8.1 Technicaldata

8.2 Basic size drawing,separatorwithout pump

8.3 Basic size drawing,separatorwith pump and no heater

8.4 Basic size drawing,separatorwith pump and heater

8.5 Connection list,with pump and no heater / without pump

8.6 Gonnection list,with pump and heater

8.7 lnterface description

8.8 Lubricants

8.9 Drawings

8.f 0 Storage and installation

t-.:' :'.;a. .l

113

114

114

120

122

123

124

',28

129

130

131

'132

133

r36

144

155

165

4

¡',,

I.I..-

j-::;r

I-Y::"1

i:.

li,-

f"I-i; 't

\,,:,

il:.':

'i,: '-Lt

I#--1

ll

.t,i

;

,

.*.1

!

$.. :{

I

I

f5

In order to make the information clear only foreseeable conditionshave been considered. No warnings are given, therefore, forsituations arising from the unintended usage of the machine and'itstools.

5tI

.....1

ii

STOP

Study instruction manuals and observe thewarnings before installation, operation,seru¡ce and maintenance.

Not following the instruct¡ons can result ¡nserious accidents.

t:

¡t

,:

&i

I

$.ii...#

á-l

3

i¡' J¡

!i

I:\

r. itIt;. ¡[

-.

3i

_Li l;ff'- ;

'7

t ril.ffi

3r.rsi l.Jir'. I

"Y

it'1L#q

-1t'' t.,: 'ff" ,

-5-:

ii,ti

:¡.,!f.

\"

r'j'&,

1

-1" :' i

$

¡,;"¡-':

.._ k-.ffii &ú1i

..xt

TiffiYi

'1

l,.jilt If.it l-

[ ,irYi.

=

-w'=1.¡

- F.'+ á3'1[]i,:1 I I

"-'wt@1

-F F"l

1

{:

{.r-rt

t,1

'f:":r'l

"lt'.r+si'g'¡

Read ffir's first

ü

,t:t::

it'

,l¡':r'

i:

't't

{t

I

This manualis designed for operators and serviceengineers working with the Alfa LavalseparatorMAB 1049.-14124.

For inforrnation concerning the functión of theseparator, see "3 Separator Basics" on page 15

and "4 Operating Instructions" on page 33.

lf the separator has been delivered and installedby Alfa Lavalas part of a processing system, thismanual is a part of the System Manual. ln thiscase, study carefully all the instructions in theSystem Manual.

ln addition to this Separator Manual a SpareParts Catalogue, SPC is supplied.

This Separator Manual consists of:

Safety Instructions

Pay specialattention to the safety instructions forthe separator. Not following the safety instructionscan cause accidents resulting in damage toequipment and serious injury to personnel.

Separator Basics

Read this chapter if you are not familiar with this

$pe of separator.

Operati ng Instructions

This chapter contains operating instructions forthe separator only.

iJ

i

'i"1I

.t

lvi:I

7

TJ

I

¡

it

':ifl

rtk-i

iri{.$

::I

.. .,JJJ'I

1

I

{,'i\

:

'iI

',,1|

,a;l\

,i

1 Read thís first

Service Instructions

This chapter gives instructions for daily checks,cleaning, oil changes, seruicing and check points.

Dismantling I Assembly

This chapter contains step'by-step instructions fordismantling and assembly of the separator forservice and repair.

Trouble-tracing

Refer to this chapter if the separator functionsabnormally.

lf the separator has been installed as part of aprocessing system always refer to the Trouble-tracing part of the System Manualfirst.

Technical Reference

This chapter contains technical data concerningthe separator and drawings.

lnstallation

General information on installation planning.

Lifting instruction

I ndex

'í

Jr

I

t:'$í :r

ito'

b,';

t;

[,,.t:ritt

1r.,.-:

il

fi-f.trrf

fif:

i$,

The centrifugalseparator includes parts thatrotate at high speed. This means that:

. Kinetic energy is high

. Great forces are generated

. Stopping iime is long

Manufacturing tolerances are extremely fine.Rotating parts are carefully balanced to reduceundesired vibrations that can cause a breakdown.Material properties have been consideredcarefully during design to withstand stress andfatigue"

The separator is designed and supplied for aspecific separation duty (type of liquid, rotationalspeed, temperature, density etc.) and must not beused for any other purpose.

lncorrect operation and maintenance can result inunbalance due to build-up of sediment, reductionof materialstrengih, etc., that subsequently couldlead to serious damage and/or injury.

The following basic safety instructions thereforeapply:

. Use the separator only for the purposeand parameter range specified byAlfa Laval.

Strictly follow the instructions forinstallation, operation and maintenance.

Ensure that personnel are competent andhave sufficient knowledge of ma¡ntenanceand operation, especially concerningemergency stopping procedu res.

Use only Alfa Laval genuine spare partsand the special tools supPlied'

1

I

¡ll

.

I

l

i"!

t

^1,

iI

:t

:*

II

.t,". j]

ll:l

tt{

:i:l

I

,t.ri

iitIt'. \

rl

't''t'I

-.I:4,i,ta

1

@.id it"

m,'"'i i

:fti'il.'ll

i-.¿,,

i.a

H'It

,"s{n;rr..¡j I

.lji

;l"i"'l

@

¡fn¡dpa I

** 2 .,,.ru-w*m't'"

fr

DANGER

Disintegration hazards

Use the separator only for the purposeand parameter range specified byAlfa Laval.

lf excessive vibration occurs, stopseparator and keep bowl filled withliquid during rundown.

When power cables are connected,always check direction of motor rotation.lf incorrect, vital rotating parts couldunscrew.

Check that the gear ratio is correct forpower frequency used. lf incorrect,subsequent overspeed may result in aserious break down.

Welding or heating of parts that rotatecan seriously affect material strength.

Wear on the large lock ring thread mustnot exceed safety limit. Q-mark on lockring must not pass opposite Q-mark byrnore than specified distance.

Inspect regularly for corrosion anderosion damage. lnspect frequently ifprocess liquid is corrosive or erosive.

2 Safety lnstrucfibns

DANGER

Entrapment hazards

Make sure that rotating parts have cometo a complete standstill before startingany dismantling work.

To avoid accidental start, switch off andlock power supply before staÉing anydismantling work.

Assemble the machine comPletelYbefore start. All covers and guards mustbe in place.

Electrical hazards

Follow local regulations for electricalinstallation and earthing (grounding).

@>rE't

H

tu

0

WARNING

Crush hazards

. Use correct lifting tools and follow liftinginstructions.

. Do not work under a hanging load.

Noise hazards

. Use ear protection in noisy

environments.

CAUTION

Burn hazards

. Lubrication oiland various machinesurfaces can be hot and cause burns.

Gut hazards

. Sharp edges on separator discs and lockring threads can cause cuts.

llt-

t.:I

..Í,J,

II

r)I,ti

tt

a

,*!i-

i-{$

¡

2 Safety lnstructions

Warning signs in the text

Pay attention to the safety instructions in thismanual. Below are definitions of the three grades

of warning signs used in the text where there is arisk for injury to personnel.

DANGER

Type of hazard

This type of safety instruction indicates asituation which, if not avoided, could result infatal injury or fatal damage to health.

WARNING

Type of hazard

This type of safety instruciion indicates asituation which, if not avoided, could result indisabling iniury or disabling damage tohealth.

A CAUTION

Type of hazard

This type of safety instruction indicates asituation which, if not avoided, could result inlight injury or light damage to health.

NOTE

This type of instruction indicates a situationwhich, if not avoided, could result in damageto the equipment.

.','R

i{.-q

:i,JI

t

-E,l

13

_r-g r ,,1

ii .;.

[&ft .",?,*J i II:ñ .'{$'q :$l;jl I

:'$iÍ o,*it { .f *Jr I

l,ic.

im, .i HBl.:iíisl , h;lr ..,.s l

2 Safetqlnstructions

Separator Basrbs

;É

s-!t

l.l

IIT

'T

'..1j

'á

t,,I

I

,¡

ff

i

$..{_.

:j

ij$It

¡.

Contents

3.1 Basic principles of separation3.1.1 Factors influencing the

sepaiation result

3.2 Overview

3.3 Separatingfunction3.3.1 Purification

3.3.2 Purifier bowl

3.3.3 Liquid seal

3.3.4 Position of interface - gravity disc

3.3.5 Clarification

3.4 Mechanical function3.4.1 Main parts

3.4.2 lnlet and outlet

3.4.3 Mechanical powertransmission

3.4.4 Brake

3.4.5 Sensors and indicators

3.5 Definitions

16

17

20

21

z¿

23

24

24

26

28

28

29?n

30

ot

15

3.1 Basic prínciples of separation 3 Eeparator Basics

3.1 Basic pr¡nciples ofseparation

The purpose of separation can be:

o to free a liquid of solid particles,

o t0 separate two mutually insoluble liquids withdifferent densities while removing any solidspresents at the same time,

. to separate and concentrate solid particles

from a liquid.

Separation by gravity

A liquid mixture in a stationary bowlwillclearslowly as the heavy particles in the liquid mixturesink to the bottom under the influence of gravity-

A lighter liquid rises while a heavier liquid andsolids sink.

Continuous separation and sedimentation can beachieved ín a seüling tank having outlets

arranged according to the difference in density ofthe liquids.

Heavier particles in the liquid mixture will settlgand form a sediment layer on the tank bottom.

Cenüifugal separat¡on

ln a rapidly rotating bowl, the force of gravity is

replaced by centrifugalforce, which can bethousands of times greater.

Separation and sedimentation is continuous and

happens very quickly.

The centrifugal force in the separator bowl can

achieve in a few seconds what takes many hoursin a tank under influence of gravity.

Sedimentation in a seftling tank, with outlets making itpossible to separate the líghter liquid parts from theheavier

16

Sedim e ntatio n by gravity

The centrifugal solution

3 Separator Basics 3.1 Basic principles of separation

,¿

i

j

s

3.1.1 Factors influencing theseparation result

Separatin g temperatu re

For some types of process liquids (e.g. mineraloils) a high separating temperature will normallyincrease the separation capacity. Thetemperature influences oil viscosity and densityand should be kept constant throughout theseparation

Viscosity

Low viscosity facilitates separation. Viscosity canbe reduced by heating.

Density difference (specific gravity ratio)

The greater the density difference between thetwo liquids, the easier the separation. The densitydifference can be increased by heating.

{I,

J'I

Low viscosity (with high temperature)

17

iIj

t'1

I1

.,J',1

;ñ,s,

I

.t{.'l

I

.1:l¡ñi1

'lt

.,|

it

tlJi

-.1

ü'¡,.1

iii

t

'ii{;i

.,i'tT.l'3t

.,1

High víscosity (wik low temperature)

High density (with low temperature)

Low density (with high temperature)

3.1 Basic principles of separation 3 Separator Basrcs

Phase proportions

An increased quantity of water in an oil willinfluence the separating résult through theoptimum transpoding capacity of the disc stack.An increased water content in the oil can be

compensated by reducing the throughput in orderto restore the optimum separating efficiency.

Size and shape of particles

The round and smooth particle (A) is more easilyseparated out than the irregular one (B).

Rough treatment, for instance in pumps, maycause a splitting of the particles resulting inslower separation. Larger particles (1) are moreeasily separated than smaller ones (2) even ifthey have the same density.

The throughput

The throughput sets the time allowed for theseparation of water and sediment from the oil. Abetter separation result can often be achieved byreducing the throughput, i.e. by increasing thesettling time.

Sludge space - sludge content

Sediment willaccumulate on the inside peripheryof the bowi. When the sludge space is filled upthe flow inside the bowlis influenced by thesediment and thereby reducing the separatingefficiency. In such cases the time betweencleaning should be reduced to suit theseconditions.

m3/h

lnfluence of size and shape

F4",l.:ll

ffij-i

"q'1kl$li..$} l

ffiti.,Ji l

rElt ¡rt'I1. "i"'Ji J

{qa!ili l.t':..-r1I

:''-."]r. ,.i'

-l

,''';I l:... "f i

I

itus$ i

f: ",: tli t'

li

. .,tt¿. !i.{.,r

€i:r lFs

Sludge accumulation

18

3 Separatw Basics 3,1 Basic principles of sepuation

Disc stack

A neglected disc stack containing deformed discsor discs coated with deposits will impairtheseparating result.

Gravity disc

The position of the interface is adjusted byaltering the outlet diameter of the heavy liquidphase, that is by exchanging the gravity disc.

A gravity disc with a larger hole will move theinterface towards the bowlperiphery, whereas adisc with a smaller hole will place it closer to thebowl centre. For selection of gravity disc see"3.3.4 Position of interface - gravity disc'on page24.

Gravity disc diameter adjust'the interface position

'liJ

i.l'!

I

j

:1

a

¡

I

Ij

1

ii

li iII

. ii litll.:) :

j!

i

-ll l]i iit :

il i';!¿ It-_

iL'r,lr'1l{ :.\3 i

1

it :il i

19

3.2 Qverview 3 Separator Basics

3.2 OverviewThe separator comprises a processing part and adriving part. lt is driven by an electric motor.

Mechanically, the separator machine frame iscomposed of a bottom part and a collecting cover.The motor is flanged to the frame. The frame feethave vibration damping.

The bottom part of the separator contains thehorizontal driving device, driving shaft withcoupling, a worm gear and a vertical spindle.

The bottom part also contains an oil bath for theworm gear, a brake and a revolution counter,indicating speed.

The collecting cover contains the processingparts of the separatot the inlet and outlets andpiping.

The liquid is cleaned in the separator bowl. This isfitted on the upper part of the vertical spindle androtates at high speed inside the space formed bythe collectíng cover.

All. connections have standardised numbers.These numbers are used in the connection listand the basic size drawing which can be found inchapter "S Technical Reference'on page 123.

ffijr"{1...J

ffit.,fi

lf'rü$

'4"

kd

fl.e

Ii¡

i

ii...)f¡.¡??.c

20

3 SeparatorBasrbs 3.3 Separating function

3.3 Separating functionUnseparated process liquid is fed into the bowlthrough the inlet pipe and is pumped via thedistributor towards the periphery of the bowl.

When the process liquid reaches holes of thedistributor; itwillrise through the channels formedby the disc stack where it is evenly distributed.

The process liquid is continuously cleaned as itflows towards the center of the bowl. When thecleaned process liquid leaves'the disc stack itrises upwards and leaves the bowl through outlet(220). Separated heavy phase flows over thegravity disc and leaves the bowlvia outlet (221).The sludge and solid particles are forced outtowards the periphery of the bowl and collectedon the bowlwall, the sludge space.

The space between bowl hood and top disc isnormally filled with heavy phase.

21

3 SeParator Basics

3.3 SeParating function

.l¡i¡,}::¡

,.-]

t,fi;¡

;ll,l.1ilIIi¡.T

.,j;l?{

,11

!aii

il

3,3.1 Purification

-.-?-

=:

ffiwEfw

ffit<.="-1I'i.j;li:. ' I

liiff$ : .l

tg,fgi . . Il"i '

rl

Centrifugal force

Process liquid

HeavY liquid Phase

Light liquid Phase

Sediment (solids)

BowlPads

D1 Diameter of inner outlet'

Dz Hole diameter of gravitY disc'

Ds Diameter of interface'

IE[il[il

22

lI5 3 Sqarator Basics 3.3 Sqarating function

$'il,,^,

l

l

i¡¡,r.1

j

This bowl has two liquid outlets. The processliquid flows through the centre and out under thedistributor.

The liquid flows up and is divided among theinterspaces between the bowldiscs, where theliquid phases are separated from each other byaction of the centrifugal force.

The heavy phase and any sediment move alongthe underside of the bowldiscs towards theperiphery of the bowl, where the sediment settleson the bowlwall. The heavy phase proceedsalong the upper side of the top disc towards theneck of the bowl hood and leaves the bowl via thegravity disc - the outer way (darkcoloured inillustration).

The light phase moves along the upper side of thebowldiscs towards the bowlcentre and leavesthe bowl via the hole in the top disc neck - fheinner way (light coloured in illustration).

3.3.2 Purifier bowl

The figure shows the characteristic parts of apurifier bowl:

1. Top disc with neck.

2. The gravity disc, which should be chosenaccording to directions in chapter "4.1.2Selection of gravity disc" on page 35.

..¡:\

j

I_{

i

I

,!t

a,

I.. .t

l

l'¡,{li

.. .:l

1

ilt'

:l

l.l

!..1

li

'¡ij¡

\\\t

/

I

Purifier bowl

23

3.3 Sqarating function 3 Sepuator Basics

3.3.3 Liquid seal

In a purifier bowl the liquid seal prevents the lightliquid phase from passing the outer edge of thetop disc, thus eliminating flow out through theouter path. The bowl must therefore be filled withsealing liquid before the process liquid is

admiüed. The sealing liquid will be displacedslightly by the process liquid into a position thatforms the interface. The location of the interfacewill be affected by the relative difference in

density between the phases, but is alsodependent on outer and inner diameters (Dt andD, respectively).

The sealing liquid:

e rflust be insoluble in the light phase.

. must not have higher density than the heavyphase.

. can be soluble in the heavy phase.

In most cases the heavy phase is used as sealingliquid.

In some cases and only if the process liquid

contains a sufficient quantity of heavy phase(more than 25%), the process liquid can besupplied directly as the seal will formautomatically.

3.3,4 Position of interface -

gravity disc

The position of the interface is adjusted foroptimum separation by altering the pressure

balance of the two liquid phases oiland waterinside the separator.

The purifier bowl is adiusted for separation liquidmixtures with various specific gravity ratios byaltering the diameter of the outlet for the heavyphase (Dr). The heavier or more viscous the lightphase and the largerthe liquid feed the srnallerthe diameter should be. For this purpose anumber of gravity discs with various hole

diameters is delivered with the separator.

il ....'*

dltS r-rí H¡¡$ii;1-ir .-.,.J{r.{

'Ii rt:i F.ar,i J¡l¡i []jli

',Í

I{rji:s: iirj,¡ --{r'; il; l.'t' ', [t]

f..fl'il

¿i

l:t

1

i¡lii'

1..

1

,.;

]ft.e-3

rt' ",'n

,ll:, J1Fj

j

,tl!i"'itl

l

1:.

.t

:1!. .1!tii

I

--),,Jiirftl

I

'...J,,,4r3ai

i

Exchange of gravity disc

24

3 SeparaforBasrbs 3.3 Separating function

1

:l:l

¿fis:1

IJ,fi*

,lr,rtrThe gravity disc is located inside the bowl hood. A

-i gravity discwith a larger hole will move theili

'nterface towards the bowl periphery, whereas at"i disc with a smaller hole will place it closer to the

t bowlcentre.ri

,,,, ln a purifier bowl the position of the interface.j should be located between the disc stack edge{t and the outer edge of the top disc.

'-tr} When selecting a gravity disc for a purifier the

; general rule is to use the disc having the largest

ri possible hole without causing a break of the wateri seal.iI Where to locate the interface depends on whichi phase should be delivered pure, and on thei proportions between the amounts of the two

".t phases as well.

I ¡ lf the light phase is wanted more free from the

i neavy one, the interface should be placed, nearer the bowl periphery, however not morei than the outer edge of the top disc (the

I gravity disc is too big), as this would break| ¡he liquid seal.

} . The heavier or more viscous the light phase

,.j and the larger the liquid feed the smaller thediameter should be.

li . When the heavy phase (water) is wanted-_,-- a--_ a-^_rL- ¡!_-Lr _-_.r_at\ !L_ !_rmore freefrom the light one (oil), the interface

should be ptaced nearerthe bowl centre,however not inside the outer edge of thediscs (the gravity disc is too small), as thiswould prevent the liquid flow. Gravity disc

25

3.3 Separatíng fundion 3 Separator Basics

3.3.5 Glarification

t4

iFqli"J ,

"{-¿H!i

l¡iffi,¡ i. "".? iili*" )

!r't.i., I i

r'r$liF,

!-,Ji'

li

Centrifugal force

Process liquid

Bowlparts

Sediment (solids)

This bowl has one liquid outlet-

The process liquid flows through the centre of the

distributor.

The liquid flows up and is divided among the

interspaces between the bowl discs, where the

sediment is separated from the liquid by action of

the centrifugal force.

The sediment move along the underside of the bowl

discs towards the periphery of the bowl, where it

settle on the bowlwall.

The separation is influenced by changes in the

viscosiiy (separating temperature) or in the through-

put

WIffi

'i;"ii

,1I

j 'l

'.-:

"?

',i

26

3 SeparatorBasics 3.3 Separatíng tuncüon

Clarifier bowl

The illustration shows characteristic parts of theclarifier bowl:

1. Discharge collar

2. Bowl discwithout caulks (metal strips)

Clarifier bowl

,;r,4

'l

,{I

.r$j

j$-{

,,iti

i,ilÍ

,' =1ill

i,ji.$

ri''Í-it

:¿

:,jJ!

. ,¡, i¡

,.,1i1'' - ¡

t1!.ili¡

27

3.4 itqhanical fundion 3 SeparatorBasics

3.4 Mechanical function

3.4.'l Main Parts

1. Separator bowl.

2. Vertical driving device.

3. Horizontal driving device-

4. Double PumP.

{"t 'J''qi

S¡Éü

h'

eJ

f.il' I{1"l

*i

'liJseq:\!ia-q

I

Separator with double PumP

28

3 Separator Basics 3.4 Mechanical function

:

I

..i

3.4.2 Inlet and outlet

The inlet and outlets consist of the following parts:

. The inlet to pump (201 .1).

. The outletfrom pump to heater (2O1.2).

. The inlet from heater to separator (201.3).

o The inlet forwater seal (206).

¡ The outlet for clean oil (220).

. The outlet forwater (221).

¡ Drain of frame (460).

. The inlet (201).

. The inlet for water seal (206).

. The outlet for clean oil (220).

. The outletforwater (221).

. Drain of frame (460).

See drawings and connection lists on pages 128

to 132.

Separator with in- and outlet pump

Separator without pump

29

3.4 Mechanical function 3 Separafor Basics

3.4.3 Mechanical powertransmission

The main parts of the power transmissionbetween motor and bowlare illustrated in thefigure.

The friction coupling ensures a gentle start andacceleration and at the same time prevents

'overloading of the worm gear and motor.

The worm gear has a ratio which increase thebowlspeed severaltimes compared with themotorspeed. For correct ratio see chapter "8.1Technicaldata" on page 124.

To reduce bearing wear and the transmission ofbowlvibrations to the frame and foundation, thetop bearing of the bowlspindle is mounted in aspring casing.

The worm wheel runs in a lubricating oil bath. Thebearings on the spindle and the worm wheelshaftare lubricated by the oil splash produced by therotating worm wheel.

3.4.4 Brake

The separator is equipped with a hand operatedbrake to be used when stopping the separator.The use of the brake reduces the retardation timeof the bowl and critical speeds willtherefore bequickly passed.

The brake lining acts on the outside of the bowlbody.

1. Bowlspindle2. Top bearing and spring casing3. Worm wheel4. Worm5. Friction coupling6. Worm wheelshaft

, ,i-,r, $ 1.".: [*,

J

,1¡' ¡. ii'3

i

I

{

.i

7

";'é

+:j

;¿i:a.!i1

30

"'i.;i' I!:.:

' .',{

j1,,diJi

I..ri

-li.¡.r ..1

íl

"iii¡!il

,j

.', ,i

a1-, tlrJ

Applying (A) and releasing (B) of brake

3 Separator8asrbs 3.4 Mechanical function

IIi.,

jii

'';

3.4.5 Sensors and indicators

Revolution counter

A revolution counter indicates the speed of theseparator and is driven from the worm wheelshaft. The correct speed is needed to achieve thebest separating results and for reasons of safety.The number of revolutions on the revolutioncounter for corect speed is shown in chapter "8Technical Reference" on page 123. Referto nameplate for speed padiculars.

Sight glass

The sight glass shows the oil level in the wormgear housing.

Cover interlocking switch (option)

When required, the cover interlocking switchshould be connected to the stader equipment sothat starting of the motor is prevented when theseparator hood is not (completely) closed.

Revolution counter - soeed indicator

Sight glass - oil level

31

3.5 Definitions 3 SeparatorBasr-cs

3.5 DefinitionsBack pressure

Clarification

Clarifier disc

Density

Gravity disc

lnterface

Liquid seal

Major Service (MS)

Purification

Sediment (sludge)

Throughput

Viscosity

*

ffiL:Í;Pressure in the separator outlet.

Liquicl/solids separ:ation with the intention of separating partictes, normallysolids, from a liquid having a lower density than the particles.

An optional disc, which replaces the gravity disc in the separator bowl, in thecase of clarifier operation. The disc seals off the heavy phase (water) outlet inthe bowl, thus no liquid seal exists.

Mass per volume unit. Expressed in kg/ms at specified temperature, normally at15 "C.

Disc in the bowl hood for positioning the interface between the disc stack andthe outer edge of the top disc, This disc is only used in purifier mode.

Boundary layer between the heavy phase (outer) and the right phase (inner) ina separator bowl.

Liquid in the solids space of the separator bowlto prevent the light phase fromleaving the bowlthrough the heavy phase ouilet, in purifier mode.

overhaul of the complete separator, including bottom pad. Renewal of seals inbowl, gaskets in inleVoutlet, seals and bearings in bottom part.

Liquid/liquid/solids separation with the intention of separating two intermixedand mutually insoluble liquid phases of different densities. solids having ahigher density ihan the liquids can be removed at the same time. The lighterliquid phase (oil), which is the major part of the mixture, shall be purified as faras possible.

Solids separated from a liquid.

The feed of process liquid to the separator per time unit. Expressed in m3/h ortivh.

Fluid resist?nce against movement. Normally expressed in centistoke(cSt = mm 2/sec), at specified temperature

$

ilJ

..j

'r; t"l

i;. :l,li , {i'' f:i"

: .."'diFdi!; i,! i-!,. '.,I

f !.:

;j.li

"J,l

t.i:Í,i l.r. l!-j

'ii .J

rj- ,t,.Ji'*tr $

{j.-'t6i

.''...

. '-.tr¡?' f' it''j

32

Ope rati ng I n stru ctipns

th,

;Kf."I

I#1$'&

,tI

I

.rt'

4.1

j-,{ 34

34

35

35

37

38

39

39

40

41

41

42

42

Gontents

Operating routine4.1.1 Before first start

4.1.2 Seleciion of gravity disc

4,1.3 Before normal start

4.1.4 Starting and running-up procedure

4.1 .5 At full speed

4.1.6 During operaiion

4.1.7 Stoppingprocedure

4.1.8 Emergency stop

Gleaning the bowf4.2.1 Removal of separated sludge

4.2.2 Disc stack

4.2.3 Assembly the bowl

The operating procedure:

Before start

+

Staft and run-up

+

Running

+

Stop procedure

33

4. 1 Aperating routine 4 Operating Instructions t-

,i

l

x

,1

5--li

t'Ji..*J

=i..

a:.

ffifrr rii :& .t;,¡-: i:

ír.!{

ili-itt:

¿&trl:j

. --.i* ft'

j.\

.{

ll

4.1 Operating routineThese instructions are related only to theseparator itself.

NOTE

lf there is a system manual, always follow theoperating instructions of the system manual.lf there is no system manual the instructionsbelow are to be followed

4.1.1 Before first startTechnical demands for connections and logicallimitations for the separator is described in thechapter"S TechnicalFleference" on page 123 andthe documents:

a. Technicaldata

b. Basic size drawing

c. Connection list

d. lnterface description

e. Foundation drawing

Before first start the following checkpoint shall bechecked:

. Fnsure the machine is installed conectly dndthat feed-lines and drains have been flushedclean.

Fill oil in the gear housing. Fill up to themiddle of the sighlglass. Use the correctgrade of oil. The separator is deliveredwithout oil in theworm gear housing. Forgrade and quality, see "8.8 Lubricants" onpage 136.

Separator with double pump

{;;i}I,{i ¡. f,il ¡

Jr

!tr:'i. üi,i;":,¿b j

6".' .Fl

's*" ¡

:_$:i!i. ,. ii..

il,:i :'i'i.'1f l'4u. j

:, 'i

'i

i, jl.f, i¡, 1-t

i,i¡il nl

!j j

34

4 Operating lnstructions 4.1 Operating routine'1 ,,.

."f

J.,#tr.\

¡}"t

"l1

{

Í.,1',1

-!

*lI

,I

Íl€

,t .\,

1,

.i_f,18

nqu

1

4.1.2 Selection of gravity disc

The separator is delivered with a set of gravitydiscs. The diameter (d) of the gravity disc (2) setsthe position of the interface in the separator. Theseparation efficiency can be optimized byselection of the conect diameter for eachprocess.

4.1.3 Before normal start

Check these points before every start.

1. Ensure the bowl is clean and that theseparator is properly assembled.

2. Make sure that all inlet and outlet couplingsand connections have been correctly madeand are properly tightened to preventleakage.

i:

._i

-á.

...#fEu

_{i'liI.[

",üsIt¡. .lhl, i¿!

.il'i iii \t'a''

Check pipe connecüons

I

Separator bowl with top disc and gravity disc

Check separator is assembled

35

4 OPerating Insguct¡o!:

4.1 OPerating routine

3. Check that the hooks and screws for the

collecting cover are fully tightened'

4. Read the oil level' The middle,of the sight

olass indicat"t inl *inimum level' Refill if

i..*r.ary' Ftt;;; 1nd quatitY' see "B'8

iuúiL.nis'on Page 136'

5. Retease the brat<e' ,tii

É- 'xd i.*!il

o

6. Make sure the dkection of rotation of the

motor and bowtcorresponds to the sign on

the frame'

\l

i;gi*r lg¡-. i

:t

;r. E'j

!, 1,.rhi

,'l't...1ri

::-

t"n

t.

.É-

¡,)

\, ..-_r

Haok bolts for collecting cover

Check oil level

Release the brake by moving it from pos' A to B

36

4 Operating lnstructi ons 4.1 Operating routine

il$

4.1.4 Starting and runn¡ng-upprocedure

1. After starting the separator, visuatly check tobe sure that the motor and separator havestarted to rotate.

2. Check the direction of rotation. The revolutioncounter should run counter-clockwise.

Be alert for unusual noises or conditions.Smoke and odour may occur at the stadwhen friction pads are new.

4. Note the normal occurrence of critical speedvibration periods.

Direction of rotation

Smoke and adour

ri4,i

:

.)

Vibration

37

4.1 Operating routine 4 Operating Instructions

5. Motor current indicates when the separatorhas come to fullspeed.

6. During start the current reaches a peak andthen slowly drops to a low and stable value.For normal length of the start-up period see"8,1 Technical data" on page 124.

4.1.5 At full speed

1. lf running the separator as a purifie¡ supplyliquid (water) to form the liquid seal, Continueuntil liquid (watefl flows out through theheavy phase (water) outlet. The liquid (water)should have the same temperature as theprocess liquid and be supplied quickly.

2. Close the liquid (water) feed.

3. Start the oil feed slowly to avoid breaking thewater seal. Then fillthe bowlas quickly aspossible.

4. Adjust to desired throughput.

Current increases when the coupling engages...

l

r F"il

r l,r:11

' ,._P¡ ':,i

r Élf,lrFliii ili

.fatti ti:.'. tf.,L.Jl.,

.... to decrease to a stable value when full speed hasbeen reached.

l',".'! i

t:,

¿."? i!

r:\,,,9i

Si

' ii

i ._]

iij"i'j.:r¡. I,:':

; ,iir¡itir i

.irl

r.i

L'i..,'

i ,ljt,,i r

j

.llI t.l

fu, I

-i1.1rll

a | '1ir i

-i,i)t, ¡.ii.. i:]

DANGER

Disintegration hazards

When excessive vibration occurs, stopseparator and keep bowl filled with liquidduring rundown.

The cause of the vibrations must beidentified and corrected before the separatoris restarted.

Excessive vibrations may be due to incorrectassembly or poor cleaning of the bowl.

38

4.1 Operating rwtine

,rr. ':s

^l.'' i 4.i.Gi)

During operat¡on

t!' Do regular checks on:iili' r

I . feed inlettemperature (if applicable)

E

i&-

$t'

.fEir

$

. collecting tank level

r souod/vibration of the separator

r motor current.

4.'1.7 Stopping procedure

1. lf running the separator as a purifier, feedsealing water.

2. Turn off the feed.

,,1- 3. StoP the seParator.

N +. Pull the brake (A).

¡ Wait untilthe separator has come to a

i complete standstill (2-5 minutes).

I Release the brake (B) when the separator is

i , at standstill.

d

:;

.j 5. Manualcleaning should be carried out before

i next start up. See "4.2.1 Bemoval of,'l separated sludge".

,¡ DANGER

¿--S Entrapmenthazards

Make sure that rotating pads have come to acomplete standstill before starting anydismantling work.

The revolution counter and the motor fanindicate if the separator is rotating or not.

Pullthe brake from positíon Bto A

EGvSE 'r:

39

4.1 Operatíng routine 4 Operating lnstructionsu

I'Íc

i

¿[]

,1

,..j.:ll

ffi''..¡¡is! i:.

fFl ,l,.J;

J

i''1;¡f:,,J:

I -r

,&.,l i

1

Í"' u

r f;;.,J, i

4.1.8 Emergency stopThe emergency stop is always installed accordingto localsafety regulations. lt is often a buttonplaced on the wall nearthe separator or on thecontrol equipment.

lf the separator begins to vibrate excessivelyduring operation, stop it immediately by switchingoff the separator motor, e.g. by pushing theemergency stop buüon.

Emergency stop

t

^.¿ '

r::?,a:; r¿*t i

.

riilt ¡rLt

DANGER

Disintegration haza rds

Evaeuate the area around the separator. Theseparator may be hazardous when passingits critical speeds during the run-down.

NOTE

After an emergency stop the cause of thefault must be identified.

lf all pads have been ohecked and the causeremains unclea¡ contact Alfa Lavalforadvice.

40

4 Operating Instructions 4.2 Cleaníng the bowlI

It

ri

r;l

iI

,lj

fü

I

4.2 Gleaning the bowlThe separated sludge is accumulating on theinside surface of the separator bowl. How oftenthe separator needs to be cleaned, depends onthe amount of sediment entering the separator.High solids content or high throughput has theconsequence that the cleaning needs to be donemore often.

lntervals for a specific case must be based onexperience.

Information about sludge content in the feed canbe achieved either by using a lab centrifuge or torun the separator for 2 - 3 hours and then stopand open the bowito check the amount of sludge.

Then prolong or shorten the cleaning interval.

4.2.1 Removal of separatedsludge

Remove the sludge collected on the inside of thebowlds follows:

1. Stop the separator as described in "4.1.7Stopping procedure" on page 39.

2. Dismantle the bowl as described in "6.2.1Bowl" on page 83.

Sludge accumulaüon

41

DANGER

Entrapment hazards

Make sure that rotating Barts have come to acomplete standst¡ll before starting anydismantling work.

The revolution counter and the motor fanindicate if the separator is rotating or not.

4.2 Cleaning the bowl 4 Operating Instructions

4,2.2 Disc stack

When the sediment is not sticky, the disc stackcan be cleaned by "hurling".

1. Clean the other bowlparts.

2. Assemble the bowl.

3. Close and lock the collecting cover.

4. Run up to full speed without Iiquid feed.

5. After "hurling" either continue separation orstop and open the bowl and remove thesediment.

lf the sediment adheres firmly, dissolve it bysubmerging the distributor and the disc stack in asuitable detergent.

lf "hurling" has no effect, clean the discs one byone.

4.2.3 Assembly the bowl

Each bowl constitutes a balanced unit. Exchangeof any major part may need rebalancing of thebowl. To prevent mixing of parts, e.g. in an

installation comprising of several machines of thesame type, the major bowl parts carry themachine manufacturing number or its last threedigits,

NOTE

Be sure.bowl parts are not interchanged.Out of balance vibration will reduce ballbearing life.

The assembly procedure is described in

"6.3.3 Bowl" on page 99.

l ;.$.,ú

i'

iffii i''l: r

; -J" j¡:''¡ .,,:¡J gFl

i$q .'i a ür jili,-

1r, i _l

',i I fí ,::l

:,i: ri: 1.. I'r'Lr;l I.,ii frr;r':'{I i ¡'"-1,i ,. -i"j

''fll: ¡¡,,i,ii1

t: ,;

ri ,. ili:i!.¡ii'!-hl

Bowl cleaning by'hurling"

42

4 Operating lnstructions 4.2 Cleaning the bovvl

Purifier and clarifier bowl

[-t

i.

,tClarifier bowl

EThe arrows indicate position of guides in the bowl.

Lubrieation neededMolykote 1000

The assembly procedure is described in"6.3.3 Bowl" on page 99.

Purifier bowl

4Íl

4 OPeratrng I nstructions

4.2 Cteaning the bowl

Ili

44

q

3q

,.-iv,v;:l

I

n

Service Instructions¡:'il

lIi

i

1

l"'I

h::a1

t.¿#i

It'i{:l

J

5.1 5.4

Gontents

5.2

5.3

Periodic maintenance5.1.1 lntroduction

5.1.2 Maintenance intervals

5.1.3 Maintenance Procedure

5.1.4 Service kits

Maintenance Logs5.2.1 DailY checks

5.2.2 Oilchange

5.2.9 lS - Intermediate Service

5.2.4 MS-Major Service

MS - Gheck Points5.3.1 Corrosion

5.3.2 Erosion

5.3.3 Cracks

5.3.4 Disc stack Pressure

5.3.5 Lock ring; wear and damage

5.3.6 Radial wobble of bowl spindle

5.3.7 Height Position ofbowl/ bowl sPindle

5.3.8 BowlsPindle cone and

bowl bodY nave

5.3.9 CouPling disc of motor

5.3.10 Friction Pads

5.3.11 Brake

5.3.12 ToP bearing sPrings

5.3.13 Ball bearing housing

5.3.14 Worm wheel and worm;

wear of teeth

5.3.15 Cover interlocking switch (option)

Cleaning5.4.1 Externalcleaning

5.4.2 Cleaning agents

5.4.3 Cleaning of bowldiscs

When changing oil5.5.1 OilchangeProcedure

46

46

46

48

48

49

49

50

cl

52

AA

54

56

57

58

59

60

6'1

62

63

64

64

65

65

oo

68

5.5

69

69

70

72

73

73

5.6 Common ma¡ntenance directions 74

5.6.1 Vibration 74

5.6.2 Balland roller bearings 75

5.6.3 Friction couPling 77

5.6.4 Shutdowns 78

5.7 Lifting instructions

'ilitt,

ilü

I

r

:li

'

;jIt.

...lii\

ll:..,.jj

E

_t-

I{:'"-lrrr",iJ

u.

iT1.,,¡i

I

ilii;l

1n

45

5.1 Feriodic maintenance 5 Service lnstructíons

5.1 Periodic maintenance

5.1.1 Introduction

Periodic, prevqntive maintenance reduces therisk of unexpected stoppages and breakdowns.Maintenance logs are shown on the followingpages in order to facilitate periodic maintenance.

5.1,2 Maintenance¡ntervals

The followi¡.tg directions for periodic maintenancegive a brief description of which parts to clean,check and renew at different maintenanceinteruals.

The Service Logs for each maintenance intervallater in this chapter give detailed enumeration ofthe checks that must be done.

Daily checks consist of simple check points iocarry out for detecting abnormal operatingconditions.

Oilchange intervalis every 1500 hours or atleast once every year if the total number ofoperating hours is less than 1500 hours.

Time of operation b.etween oil changes can beextended from the normal 1500 hours to 2000hours if a synthetic oil of group D is used.

In seasonal operation change the oilbefore a newperiod.

lS - Intermediate Service consists of an overhaulof the separator bowl, inlet and outlet every 3months or 2000 operating hours. Seals in bowland gaskets in the inleVoutlet device arerenewed.

Periodie m ai nten ance prevents stoppages

Maintenance log

46

DANGER

Disintegration hazards

Separator parts that are worn beyond theirsafe limits or incorrectly assembled maycause severe damage or fatal injury.

5 Servrbe Instructions 5.1 Periodic maintenancei.

J,3.1

.

r"Jü

ú...: .¡

$

oÁ

'{.,1',\

ii

.,*J

f',.'fr

,*

É',Á*l

:r

.u,'i

ÍIt 'o

]l

_1

MS - Major Service consists of an overhaulof thecomplete separator every 12 months or 8000operat¡ng hours. An lntermediate Service isperformed, and the flat belt, friotion elements,seals and bearings in the bottom part arerenewed.

3-year serv¡ce cons¡sts of service of the couplingbearings, service of frame intermediate part andrenewal of frame feet. The rubber feet get harderwith increased use and age.

Service schedule

oit chanse q(tIntermediate Service : lS

Major Service : MS

S-year Service

Other

Check and prelubricate spindle bearings ofseparators which have been out of serviee for 6months or longer,

NOTE

Do not interchange bowlparts!

To prevent mixing of parts, e.g. in aninstallation comprising several machines ofthe same type, the major bowl parts carry themachine manufacturing number or its lastthree digits.

47

5,1 Periodic maintenance 5 Service Instructions¡

¡..-1

,'F.*g', i i.' 'i,.qlir

5.1.3 Maintenanceprocedure

At each Intermediate and Major Seruice, take acopy of the Service Log and use it for notationsduring the service.

An lntermediate and Major Service should becarried out in the following manner:

1. Dismantle the parts as mentioned in theService Log and described in Chapter "6Dismantling/Assembly" o n page 8'1.

Place the separator pañs on clean, softsurfaces such as palfets.

2. Inspect and clean the dismantled separatorparts according to the Service Log.

3. Fit allthe parts delivered in the Service kitwhile assembling the separator as describedin chapter "6 DismantlinglAssembly" on page81. The assembly instructions havereferences to check points which should becarried out during the assembly.

5.1.4 Service kits

Specialservice kits are available for InlermediateService (lS) and MajorService (MS).

For other services the spare parts have to beordered separately

Note that the parts for lS are not included in theMS kit.

The contents of the service kits are described inthe Spare Parts Catalogue.

''. Iil-

,; o"' '

't ,l&ii

r.: .,r

;'l: i...J¡r ,

I

Spare parts kits are available for lntermediate Serviceand Maior Seruice

¡!

:

NOTE

Always use Alfa Laval genuine parts asotherwise the warranty will become invalid.

Alfa Lavaltakes no responsibifity forthe safeoperation of the equipment if non-genuinespare parts are used.

...]E,

i6 I

;,t J

'. .Ji,:. Jli f'l l

,rt jI"J,¡: i:¡'$

:..í': io:J

. ,11

:i itn' l\

r!.

l. -:¡1 '?ri.....1iii jfl'i --;

,?J#i 1

it: jtiI;h:'t

.:-'¿:

4B

D¡+...^ 5 Service lnstructions 5.2 Maintenance Logs

5.2 Maintenance LogsKeep a log of inspection and maintenanceperformed. Parts repeatedly renewed should begiven gpecialconsideration. The cause ofrepeated failures should be determined andcorrected. Discuss your problems with anAlfa Laval representative and, when necessaryrequest a visit by an Alfa Laval Service engineer.

Rate of corrosioh and erosion and notification ofcracks should also be a part of this log. Nqte theextent of damage and date the log entries so thalthe rate of deterioration can be observed.

5.2.1 Daily checksThe following steps should be carried out daily.

1) See manufacturer's instruction

.E,Á,

:¡1l:f.ri

- ".-,J-E

'+*

i1:li,l.:;

.b(E.*

3.!l:l

Main component and activity Part Page Notes

lnlet and outlet

Check for leakage Collecting cover

Separator bowl

Check for vibration and noise 74

Worrn wheelshaft and gear casing

Check for vibration and noise

Check Oil levelin gear housing 50

Electrical motor

Check for heat, vibration and noise -1)

49

5.2 Maintenance Logs 5 Seruíce lnstructions

Main component and activity Part Page Notes

Worm wheel shatt and gear housing

Check

Renew

Worm wheeland worm

Oil " in gear housing

66

50

5.2.2 Oil change

The oilchange and check of worm gearshould becarried out every 1500. hours of operation.

" When using a group D oil, time of operationbetween oil changes can be extended from thenormal 15O0 hours to 2OOO hours.

When the separator is running for short periods,the lubricating oilmust be changed every 12

months even if the total number of operatinghours is less than 1500 hours (2000 h).

In a new installation, or after replacement of gear,change the oil after 200 operatíng hours.

See chapter "8 Technical Reference'on page123 for further information.

{

'itI

..1t

.t:;l.i! i..P, l,', :i'rá-ui9i.il.,'li .¡i:l

J

t,i¡,$,,;i í

,¿:t{¡ .,1

,*1,. J

trl :

l?' ;

'," 4

ll

50

II¡q

t'I

i:¡:l

as

5 Service lnstructions 5,2 Maintenance Logs

ü"nh 5.2.3 lS - Intermediate Servicel!

--:!lt-,! Name of planL Local identification:R

il Separator: MAB 1048-14/24 Manufacture No.fYear:.t:4

I Total running hours: Product No.: 881241-08-14it

fi Date: Signature:iLfE

i::'l:rñ

*t\

il nenew all parts included in the lntermediate Service kit (lS) and do the following activities.:ü:t¡rfit!.

¡r\ili,ii

Main component and activity Part Page Notes

Inlet and outlet, frame

Clean and inspect Housings and frame hood

Separator bowl

Clean and inspect

Check

Bowl hood

Top disc

Bowl discs

Distributor

Threads on lock ring and bowlbody

Galling of guide surface

Corrosion, erosion, cracks

72

59

59

54-57

Power transmission

Change Oilin oilsump 73

Electricalmotor

Lubrication (if nipples are fitted) See sign on motor

Signs and labels on separator

Check attachment and legibility Safety labelon hood

Other plates and labels

153

51

5.2 Maintenance Logs 5 Service lnstructions

5.2.4 MS-Major Service

Name of plant:

Separator: MAB 1048.-14124

Totalrunning hours:

Date:

Local identification:

Manufacture No.l/ean

Product No.: 881241-08-14

Signature:

;J

iaFj,{ífl

, t*,"J!

iffi,

!.J

f'r1.... r

t#ki

,*l"t

IJ

:l,F

:1

1

,." i::i

)

tili:: i':' ]

1

,"i : ll.,f j

:.r ilri' ''l.i:il it| ..1.41

:': -Ji,I:i

ir''11ri tlij it

sr-{ffi' il

Pr;i

'Ff"*

Main component and activity Pañ Page Notes

Inlet and outlet

Clean arid inspect Threads of inlet

Separator bowl

Clean and check

Renew

Lock ring

Bowl hood

Top disc

Gravity disc

Bowldiscs

Distributor

Bowlbody

Corrosion

Erosion

Cracks

Disc stack pressure

O-rings and sealings

59

72

54

56

57

58

Worm wheel shaft and gear housing

Check

Renew

Worm wheeland worm

Radial wobble of worm wheelshaft

Axial play of coupling disc

Oilin gear housing

66

63

50

52

5 Seruice lnstructions 5.2 Maintenance Logs

Main component and activity Part Page Notes

Ve¡tical driving device

Clean and check

Renew

Bowlspindle

Buffers

Ballbearing housingindentations

Radial wobble of bowl spindle

Ball bearings and top bearingsprings

62

60

60

62

Brake

Clean and check

Renew

Spring and brake shoe

Brake plug

64

64

Friction coupling

Clean and check

Renew

Friction coupling

Friction pads

Lipsealring

77

77

77

Frame feet

Renew Vibration dampers 111

Electricalmotor

Clean and check

Lubrication (if nipples are fitted)

Position of coupling disc 63

Signs and labéls on separator

Check attachment and readability,replace if needed

Safeg label on collectingcover

153

Mon itoring equipment (option)

Functíon check Cover interlocking switch 68

l:I

t,

l'"i:

.lt

l!ill

II

$

[\

:'5|iY,

j'h{

f"li,

'-.- |E-E

jl

Illl

53

5.3 MS - Check points 5 Se¡vice lnstructions

5.3 MS - Check points

5,3.1 Corrosion

Evidence of corrosion attacks should be lookedfor and rectified each time the separator is

dismantled. Main bowlparts such as the bowlbody, bowl hood and lock ring must be inspectedwith particular care for corrosion damage.

DANGER

Disintegration hazard

Inspect regularly for corrosio n damage.lnspect frequently if the process liquid is

corrosive.

Always contact your Alfa Laval representative ifyou suspect that the largest depth of thecorrosion damage exceeds 1 ,0 mm or if crackshave been found. Do not continue to use theseparator until it has been inspected and givenclearance for operation by Alfa Laval.

Cracks or damage forming a line should beconsidered as being particularly hazardous.

Non-staintess steeland cast iron pañs

Corrosion (rusting) can occur on unprotectedsurfaces of non-stainless steel and cast iron.Frame parts can corrode when exposed to anaggressive environment.

Stainless steel

Stainless steel parts corrode when in contact witheither chlorides or acidic solutions. Acidicsolutions cause a general conosion. The chloridecorrosion is characterised by localdamage suchas pitting, grooves or cracks. The risk of chloridecorrosion is higher if the surface is:

.."],fFr{,

i..ii

#il¡p"'*,d t-.

ii,:,! ,

'ti¿* r

I

i';il'?¡

i l'*'1

J

!¡!!

;j,t

I'¡iÉT,;

'f

il

i!'!í t:f;.¡

i

I

J'|

'1

¡

:

t,)rt' !

iÉ:1"',

iÉ#,Ei

.i

s#,ul,i

-.si{jiji

:

'¡I:i.. t'in I

I-)

,"11.t:., üF¡io'I

1

*'lt!it*f$

I

-....iiir-*----a.:i:"1-_=¡--_*.,iJ*_.-_

Corrosion forming a line

Main bowl parts

54

5 Service lnstructr'ons 5.3 MS - Check points

. Exposed to a stationary solution.

¡ In a crevice.

. Covered by deposits.

. Exposed to a solution that has a low pHvalue.

Corrosion damage caused by chlorides onstainless steelbegins as smalldark spots thatcan be difficult to detect.

r Inspect closely for all types of damage bycorrosion and record these observationscarefully.

¡ Polish dark-coloured spots and othercorrosion marks with a fine grain emery cloth.This may prevent further damage

¿fii.:¡}i..

Polish corrosion spots

)I

l.:, .

I

Fsul

i

III

,in

'¡1

.,i:'

. i;a_.iG

.8jil l l¡Iti:J

¿,8'1:E

DANGER

Disintegration hazard

Pits and spots forming a line may indicatecracks beneath the surface.All forms of cracks are a potential dangerand are totally unacceptable.Renew the part if corrosion can be suspectedof affecting its strength or function.

55

5.3 MS - Checkpoints 5 Service lnstructions

Other metal parts

Separator parts made of materials otherthansteel, such as brass or other copper alloys, canalso be damaged by corrosion when exposed toan aggressive environment. Possible corrosiondamage can be in the form of pits and/or cracks.

5.3.2 Erosion

Erosion can occur when particles suspended inthe process liquid slide along or strike against asurface. Erosion can become intensified locallyby flows of higher velocity.

DANGER

Disintegration hazard

Inspect regularly forerosion damage. Inspectfrequently if the process liquid is erosive.

Always contact your Alfa Laval representative ifthe largest depth of any erosion damage exceeds1.0 mm. Valuable information as to the nature ofthe damage can be recorded using photographs,plaster impressions or hammered-in lead.

Erosion is characterised by:

. Burnished traces in the material.

. Dents and pits having a granular and shinysurface.

Surfaces particularly subjected to erosion are:

1 . The underside of the distributor in the vicinitvof the distribution holes and wings.

2. The internalsurface of the bowl body thatfaces the conicalpart of the distributor.

Look carefully for any signs of erosion damage.Erosion damage can deepen rapidly and.

consequently weaken parts by reducing thethickness of the metal.

Max. I mm

Maximum depth of damage

Erosion check points

-]I

¡'.I

I

!;

it'I

56

5 Seruice lnstructions 5.3 MS - Check points

j

'.:J,1

r l:,]

ft!J

{i},

i'll

j1\.J,

:'1i,.1¡.t

1"1

lI

:.-i

ü.

it''I

t'

5.3.3 Gracks

Cracks can initiate on the machine after a periodof operation and propagate with time.

r Cracks often initiate in an area exposed tohigh cyclic material stresses. These arecalled fatigue cracks.

. Cracks can also initiate due to corrosion in anagg ressive environ ment.

r Although very unlikely, cracks may also occurdue to the low temperature embrittlement ofcertain materials.

The combination of an aggressive environmentand cyclic stresses will speed-up the formation ofcracks. Keeping the machine and its parts cleanand free from deposits will help to preventcorrosion attacks.

It is particularly impoñant to inspect for cracks in

rotating parts.

li

Fj:li .

it

t.,,:lt,:H "-

._t,

DANGER

Disintegration hazard

Erosion damage can weaken parts byreducing the thickness of the metal.

Renew the paÉ if erosion can be suspectedof affecting its strength or function.

DANGER

Disintegration hazard

All forms of cracks are potentially dangerousas they reduce the strength and functionalability of components.

Always renew a part if cracks are present.

57

5.3 MS - Check points 5 Seruice lnstrucrtona

Always contact your Alfa Laval representative ifyou suspect that the largest depth of the damageexceeds 1.0 mm. Do not continue to use theseparator until it has been inspected and clearedfor operation by Alfa Laval.

5,3.4 Disc stack pressure

The lock ring (1) should press the bowl hood (2)

firmly against the bowlbody (3). The hood in turnshould exeñ a pressure on the disc stack (4),

clamping it in place.

NOTE

lnsufficient pressure in disc stack can causeout of balance vibration and reduced lifetimeof ball bearings.

Compress the disc stack by tightening the lockring, see chapter "6.3.3 Bowl" on page 99.

Correct pressure is obtained when it is possible totighten the lock ring so far Qy hand that the

$-mark on the lock ring is positioned 60" - 90'before the mark on the bowl hood.

To achieve this, add an appropriate number ofdiscs to the top of the disc stack beneath the topdisc.

Then advance the lock ring by giving the spannerhandle some blows tillthe Q-marks are passedand the bowl is fullv assembled.

i'J

t."l, t,-

I F1l

| .."J;

1,.,fFr

¿ ;lí,r"..,".J

¡:r.

li¿tt 9I t,..

l'- 't-

l_,

i"rI. .r

;. .l

{

I

I

i-;t'i[,J'

f'.

i,!ri

"t-r "l1llr?

j,l

f ",[1tl

i¡'É;r

l!

¡l

¿':

'i

:,

".Á.d,5B

:l

¡

¿

I1

. r"{

.: i

5 Seruice lnstrucfions 5.3 MS - Check points

'I oi

' --1

l

''..,:i

"-ll

I

5.3.5 Lock ring; wear and damage

Excessive wearor impact marks on threads,guide and contact surfaces of the lock ring, bowlhood and bowlbody may cause hazardousgalling.

Check the thread condition by tightening the lockring after removing the disc stack and bowl hoodO-ring from the bowl.

In a new bowlthe alignment marks on the lockring and the bowlhood are exactly opposite eachother.

lf thread wear is obserued, mark the bowl hood at

the new position of the alignment mark on thelock ring by punching in a new alignment mark.

Contact Your Alfa.Laval representative

. lf the originalmark on the lock ring passesthe corresponding mark on the bowl hood bymore than 250 which corresponds to 45 mm.

. lf the alignment marks become illegible. Thethread wear needs to be inspected and thenew position of alignment marks determined.

Damage

The positions of the threads, contact and guidesurfaces are indicated by arrows in theillustration.

Clean the threads, contact and guide surfaceswith a suitable degreasing agent.

Check for burrs and protrusions caused byimpact. Watch your fingers for sharp edges.

,ñ'!.

h"

I

li'^-

rnJ,i$

I

litr"

I.to$.i$,:i,i*H'

Jj

;,..-1,:$

.:¡rF.

]Ij

;$E

3

,{ffit

.iÉ

DANGER

Disintegration hazards

Wear on large lock ring thread must notexceed safety limit. The Q-mark on lock ringmust not pass opposite Q-mark by more thanthe specified distance.

Maximum wearA=28

59

5,3 MS - Checkpotnts 5 Se¡vice Instructtons

lf damage is established, rectify using awhetstone or fine emery cloth (recommendedgrain size 240).

lf the damage is considerabler use a fine single-cut file, followed by a whetstone.

5.3.6 Radialwobble of bowlspindle

. Spindle wobble is indicated by rough bowlrun(vibration).

The bowt spindle wobble should be checked if thebowl spindle has been dismantled or if rough bowlrunning (vibration) occurs.

NOTE

Spindle wobble willcause rough bowl run.This leads to vibration and reduces lifetime ofballbearings.

Check the wobble before mounting the bowl.

Before measuring, make sure that the bufferplugs are properly tightened.

. Fit a dial indicator in a suppod and fasten it tothe frame.

-

. Remove the motor to get access to thecoupling drum. Use the coupling drum torevolve the spindle manually.

. Measure the wobble at the top of the taperedend of the spindle. Maximum permissibleradial wobble is 0.15 mrn.

. lf wobble is too large, renew allthe ballbearings on the spindle.

Measure wobble after assembly. lf it is still

excessive, the spindle is probably damaged andmust be renewed, contact your Alfa Laval

representative.

Maximum spindle wobble 0,15 mm

60

lr-lii.Fitf&'5

F'I, j'l

u-.{4,.

tl

.:-l

r''tH,';

l

tilt'rasiY' ""1ts, I

i.)

v"Ali !tt'i ,l

j

Rotate spindle by hand

5 Service Instructíons 5.3 MS - Check points

-E'

oF,,1

:l!j

.i,'r'$.B

,|. \'{itj,n'

,.'i'1,.}.ji¡t_..1ta

,t,¡i1:!i.1

frJ1

?

1

5.3.7 Height posit¡on of bowl/bowl spindle

Wheneverthe bowl spindle has been rernoved, itsheight position relative to the frame must bechecked.

The bowl must be in place in the separator. Thelock ring tightened. Make sure the alignmentmarks Q on bowl hood and lock ring are in front ofeach other.

For correct height position the distance (H)between the top face of the large lock ring and thetop rim of frame must be 34-36 mm.

Alfa Laval ref.537541, ¡eu. 0

Adjustment is made with adjustment rings (1)under the thrust bearing at the bottom of thespindle.

61

5.3 MS - Checkpoints 5 Seruice Instructions

5.3.8 Bowl spindle cone and bowlbody nave

lmpact marks on the spindle cone or in the bowlbody nave may cause poor fit and out-of-balancevibrations.

The bowl spindle and the nave should also bechecked if the bowl spindle has been dismantled

or if the bowl runs roughlY.

Corrosion may cause the bowl to stick firmly tothe spindle cone and cause difficulties during thenext dismantling.

. Remove any impact marks with a scraperand/or whetstone,

Rust can be removed by using a fine-grain emerycloth (e.9. No. 320). Finish with polishing paper(e.9. No.600).

NOTE

Always use a scraper with great care. Theconicity must not be marred.

@(!#,

Oilthe bowl spindle to prevent corrosion

a\.'. :

a

f:..li:.,

*.. 4

:$

I -iz\

F.:

I

,jiitt

il''."titt'

:ll'!:'1

l,J

h*¡Jüi

.l

,il

f;li

¡, tli:jJ

t-.,}l,:, 3.jt'i

lL1l¡¡

i:fj

62

irlr,i

5 Service lnstructions 5.3 MS - Checkpoints

t;!:"L.¡l,

5.3.9 Coupling disc of motor

The position of the coupling disc on thé motorshaft is establishing the location of the frictionpads inside the coupling.

lf the coupling disc is loosened without firstmarking its position on the motor shaft, thecorrect position must be determined again.

1. Measure the distance on the frame.

2. Measure the distance on the motor.

The coupling disc is in correct positicÍn whenframe distance (1) is 32 mm largerthan motordistance (2), see the illustration.

Frame distance

Position of coupling disc

ti

a:

$,

"rF'.1.¡ .\:t:' l:A

iIüi.¡l'i,i. i::;i

#E'l'!, !.tlta

W,![

Motor distance

63

5.3 MS - Checkpoinfs 5 Service Instructions

5.3"10 Friction pads

Worn or oily pads will cause a long running-upperiod. Renew allthe pads even when only one ofthem is worn.

lf the pads are oily:

. Clean the pads as well as the inside of thecoupling drum with a suitable degreasing

agent.

. Roughen up the friction surfaces of the padswith a coarse file.

5.3.11 Brake

A worn or oily brake lining will lengthen the

stopping time. Remove the bracket with thebrake. Examine the friction element.

. Renew the lining when the friction material is

worn down.

- Remove rivet head by drilling.

- Punch out rivet,

Fasten the new lining to brake shoe witha new rivet.

. lf the friction element is oily: Clean the brakelining and the outside surface of the bowlbody with a suitable degreasing agent.

Checking the brake

Afterthe brake assembly has been fitted, releasethe brake and rotatethe bowl slowly by hand. lf ascraping noise is heard, the friction element isprobably touching the bowl surface.

Fornormal stopping time see "8.1 Technical data"on page 124.

Fricüon pads

Friction lining

64

5 Service lnstructions 5,3 MS - Check pointsfa ll

IN"

l

I!t{c:t!l\.(:j

rIt'=

it',::1

5.3.12 Top bearing springs

Weakened or broken. butfer spr¡ngs (2) may giverise to machine vibration (rough bowl running).

The condition (stiffness) of a spring can hardly bedetermined without using special testingequipment. So, an estimation of the springcondition must be based on the knowledge of themachine run before the overhaul. lt isrecommended, however, to renew allthe springsat the annualoverhaul.

In case of a sudden spring fracture, all springsshould be renewed even when only one springhas broken.

5.3.13 Ball bearing housing

. Defective contact surfaces for the buffers onthe ball bearing housing may give rise tomachine vibration (rough bowl running).

Examine the contact surface for the buffers (1 ) onthe ball bearing housing (3). ln case of defects(indentations deeper than 0.1 mm) renew thehousing as wellas buffers and springs.

$F'l.r' t

j,l

1. Radial buffer2. Buffer spring3. Ball bearing housing

I

{

:I;tE

.E

:l

J:;,iÍ-,8

,,1I.. É

r.f

¡

$$g

ge€I

I

€¿

65

5.3 MS - Checkpoints 5 Service Instructions

5.3.14 Worm wheel and worm;wear of teeth

Check the teeth of worrn wheel and worm forwear, see " Tooth appearance examples" on page67.

Examine the contact surfaces and compare thetooth profiles. The gear may operate satisfactorily

'even when worn to some degree.

NOTE

Renew both worm wheel and worm at thesame time, even if only one of them is worn.

NOTE

Presence of metalchips in the oilbath is anindication that the gear is wearingabnormally.

When using mineral-type oil in the worm gearhousing, the presence of black deposits on thespindle parts is an indication that the oil base hasdeteriorated seriously or that some of the oiladditives have precipitated. lf pits are found onthe worm geal the cause could be that the -

additives are not suitable for this purpose.

ln allthese cases it is imperative to change to ahightemperature oil. See chapter "8.8Lubricants" on page 136.

1. Worm wheel2. Worm (part of bowl spindle)

.:I'i'ff'{it

fil-raj1' 1"'.. lú:rJ i

;

i;

I

"i, :!

,f',i

,r.l'*ii'í"ü,.. :

j

t

¡"1'

:i!i i¡,it: ,,

.ii:

¡P.qI L.''tLl

i

1

2

66

5 Seruice lnstructrbns 5.3 MS - Check poinfsIt

!(L.

Tooth appearance examples

Satisfactory teeth

Uniform wear of contact sudaces. Surfaces aresmooth.

Good contact surfaces willform on the teethwhen the gear is subjected to only moderate loadduring its running-in period.

Worn teeth

Permissible wear is as a rule 1/3 of the thicknessof the upper part of a tooth, provided that

. the wear is uniform over the whole of theflank of a tooth

¡ and all teeth are worn in the same way.

Spalling

Small bits of the teeth have broken off, so-calledspalling. This is generally due to excessive loador improper lubrication. Damage of this type neednot necessitate immediate replacement, butcareful checking at short intervals is imperative.

Pitting

Small cavities in the teeth, so-called pifting, canoccur'through excessive load or improperlubrication. Damage of this type need notnecessitate immediate rep lacement, but caref ulchecking at short intervals is imperative.

If,

f ""'.='lj

It;l.' I

I

Spalling

Pitting

:$

'B

..E-"tf

.rB;::'r)

l

,,¿$':'E':

;

-trü

:

,,#

i:

slr

Satisfactory teeth

Worn teeth

67

5.3 MS - Check points 5 Serurce Instructions

5.3.15 Cover interlocking switch(option)

Alfa Laval rd.505868, reu.2 / 557fr7, rau. 1

Switch rating, voltage: Max. 500 V

current: Max. 3 A

For other technical information see chapter "8.5Connection list, with pump and no heater/withoutpump" on page 131, .8.6 Connection list, withpump and heate¡" on page 132 and chapter "B.Tlnterface description" on page 133.

760. Cover interlocking switch (frame top part)

68

i

3

r.i[... 5 Service lnsfrucfibns 5.4 Cleaning

,.J

$

.tjrl. 5.4

'jIli¡'l

Cleaning

,.j 5.4.1 External cleaningl-,1-.1 The externalcleaning of the frarne and motor.j snouH be restricted to brushing, sponging or

t wiping while the motor is running or is still hot.J'¡

Never wash down a separator with a direct waterstream.

, Totally enclosed rnotors can be damaged by; direct hosing to the same extent as open motors

and even more than those, because:

. Some operators believe thatthese motors aresealed, and normally they are not.

i . A water jet played on these motors willi produce an internal vacuum, which will suck

the water between the metal-to-metal contacti surfaces into the windings, and this water

,,.i cannot escape.I.i 1 . Water directed on a hot motor may causei condensation resulting in short-circuiting and

..i . ,.$" internalcorrosion..f'

' , Be careful even when the motor is equipped with

"ji a protecting hood. Never pfay a water jet on the

$ ventilation grill of the hood.

i

l,,,t

;E

:

--ro d

Use a sponge or cloth and a brush when cleaning

Never wash down a separatorwith a direct waterstream or playing a water jet on the motor

.9,

.u

I

l

d

t"

..,1

Ftr69

5.4 Cleaning 5 Eeruice lnstructions

5.4.2 Gleaning agents

When using chemicalcleaning agents, make sureyou follow the generalrules and supplier'srecommendatio ns regarding ventilation,protection of personnel, etc.

For separator bowl, inlet and outlet

A chemical cleaning agent must dissolve thedeposits quickly without attacking the material ofthe separator parts.

. For cleaning of lube oil separators the mostimportant function of the cleaning agent is tobe a good solvent for the gypsum in thesludge. lt should also act as a dispersant andemulsifier for oil. lt is recommended to useAlfa Laval cleaning liquid for lube oilseparators which has the above mentionedqualities. Note that carbon steel parts can bedamaged by the cleaning agent if submergedfor a long time.

. Fuel oil sludge mainly consists of complexorganic substances such as asphaltenes.The most important propedy of a cleaningliquid for the removal of fuel oil sludge is theability to dissolve these asphaltenes.

Alfa Laval cleaning liquid of fueloilseparators has been developed for thispurpose. The liquid is water soluble, non--flammable and does not cause corrosion ofbrass and steel. lt is also gentle to rubber andnylon gaskets in the separator bowl.Beforeuse, dilute the liquid with water to aconcentration of 3-5%. Recommendedcleaning temperature is 5G70'C.

CAUTION

Skin irritation hazard

Read the instructions on the label of theplastic container before using the cleaningliquid.

Always wear safety goggles, gloves andprotective clothing as the liquid is alkalineand dangerous to skin and eyes.

Alfa Laval eleaning liquid for lube and fuel oilseparators ís available in 25 litres plastic containers

70

5 Seruice lnstructions 5.4 Cleaning

For paÉs of thedriving devices

Use white spirit, cleaning-grade kerosene ordiesel oil.

Oiling (protect sudaces against corrosion)

Protect cleaned carbon steel parts againstcorrosion by oiling. Separator parts that are notassembled after cleaning must be wiped andcoated with a thín layer of clean oil and protectedfrom dust and dirt.

1. Worm wheel2. Worm

,,],i

... i

:¡[,j,

:"1.'.''.,.1

!''iE

, \.rt

" ,:i

,l;É

Ixa7.

71

5.4 Cleaning 5 Service lnstructions

5.4.3 Gleaning of bowl discs

Bowldiscs

Handle the bowl discs carefully so as to avoiddamage to the surfaces during cleaning.

NOTE

Mechanicalcleaning is likely to scratch thedisc surfaces causing deposits to formquicker and adhere more firmly

A gentle chemicalcleaning is thereforepreferable to mechanical cleaning.

Remove the bowldiscs from the distributorand lay them down, one by one, in thecleaning agent.

Let the discs remain in the cleaning agentuntilthe deposits have been dissolved. Thiswill normally take between two and fourhours.

Finally clean the discs with a soft brush.

CAUTION

Cut hazard

The discs have sharp edges.

1.

2.

3.

Clean the discs with a soft brush

I

;'lI

,]

,it¡t.

,¡ ;i

';-¡..i:j::

.+í:

,.']

i

,.Ji

nf1

Put the discs one by one into the cleaning agent

72

í..:j 5 Seru¡be Instructions 5.5 When changing oil

[:.t'11l

i

¡::,t

i

rl

5.5 When changing oil

Check at each oilchange

Check the teeth of both the worm wheel andworm for wear, see "5.3.14 Worm wheel andworm; wear of teeih" on page 66.

5.5.1 Oil change procedure

NOTE

Before adding or renewing lubricating oil inthe worm gear housing, the informationconcerning different oil groups, handling ofoils, oil change intervals etc. given in"8.8 Lubricantg" on page 136 must be wellknown.

1. Place a collecting tray under the drain hole,remove the drain plug and drain off the oil.

CAUTION

Bt¡rn hazards

Lubricating oiland various machine surfacescan be sufficiently hot to cause burns.

2. Fill new oil in the worrn gear housing. The oillevel should be slightly above middle of thesight glassThe correct oilvolume is 0.8litres.

i't.

tt.7

D.¡'[,

I..3'It..

iJ

i

':r .

I

;l-,,.:1jl

Check oillevel

73

5.6 Common maintenance dírections 5 Service lnstructions

5.6 Gommonma¡ntenancedirections

5.6.1 Vibration

Vibration or noise often indicates that somethingis incorrect.

Use vibration analysis ínstrument to periodicallycheck and record the level of vibration. See theillustration where to take measurements.

The level of vibration should not exceed 9.0 mm/s(RMS). Stop the separator and identify the cause.

lf the separator begins to vibrate excessivelyduring operation, proceed as described in "4.1.8Emergency stop" on page 40.

rFl;-J r

'"ilir

t.'r. J:

't"'4

.t Irffi-

l,

t

. ''¡i1

74

L.r5 Seruice lnstrucübns 5.6 Common maintenance directions

-i

)

i)

5.6.2 Balland roller bearings

Specialdesign bearings forthe bowl spindle

The bearings used for the bowlspindle arespecialto withstand the speed, vibration,temperature and load characteristics of high-speed separators

Only Alfa Lavalgenuine spare pads should beused.

A bearing that in appearance looks equivalent tothe correct may be considerably different invarious respects: inside clearances, design andtolerances of the cage and races as well asmaterial and heat treatment.

NOTEUsing an incorrect bearing can cause aserious breakdown with damage toequipment as a result.

Do not re-fit a used bearing. Always replaceit with a new.

Dismantling

For bearings where no driving-off sleeve isincluded in the tool kit, remove the bearing fromits seat by using a puller. lf possible, let the pullerengage the inner ring, then remove the bearingwith a steady force untilthe bearing borecompletely clears the entire length of thecylindrical seat.

The puller should be accurately centred duringdismantling; otherwise, it is easy to damage theseating.

NOTE

Do not hit with a hammer directly on thebearing.

1. Outer race2. Ball/roller3. lnner race4. Cage

For bearíngswhere no driving-offsleeve rb includedinthe tool Rit, use a puller when removing bearingsli

i{:l

t.4ililii

.ül1

I

:1 .r)

:i

itti

,'!

1[

1i

1

23

75

5.6 Common maintenance directions 5 Se¡vice lnstrucfions

Gleaning and inspection

Check shaft (spindle) end and/or bearing seat inthe housing for damage indicating that thebearing has rotated on the shaft (spindle) and/orin the housing respectively. Renew the damagedpa¡t(s), if the faults cannot be remedied bypolíshing.

Assembly

. Leave new bearings in originalwrapping untilready to fit. The anti-rust agent protecting anew bearing should not be removed beforeUSE.

Use the greatest cleanliness when handlingthe bearings.

To facilitate assembly and also reduce therisk of damage, first clean and then lightly oilthe bearing seating on shaft (spindle) oralternatively in housing, with a thin oil.

. When assembling ball bearings, the bearingsmust be heated in oil to max. 125 "c.

NOTE

Heat the bearing in a clean container.

Use only clean oilwith a flash point above250 "c.

The bearing must be well covered by the oiland not be in direct contact with the sides orthe bottom of the container. Place thebearing on some kind of support orsuspended in the oil bath.

WARNING

Bum hazards

Use protective gloves when handling theheated bearings.

Clean and líghtly oilthe bearíng seating beforeassemb/y

The bearing must not be in direct contact with thecontainer

i

t*1'F!r1.

, _ir¡.

...fi:':li'Fr,:

I"l,"- ¿i.,'

t"¡¡

,i,..':¡Y..6i;

r'

.l

J

.,{!.:. .i".1

"1I

ii,'1,a i,,.,. i

i

P

76

l\

tt.

l.b.:,=

.i

5 Service Instructions 5.6 Common maintenance directions

''.1

..t:.ri'"-'l

iI

,.,!,r 1..

l:lr,

There are severa¡ basic rules for assemblingcylindrical bore bearings:

Never directly strike a bearing's rings,cage or rolling elements whileassembling- A ring may crack or metalfragments break off.

Never apply pressure to one ring in orderto assemble the other.

Use an ordinary hammer. Hammers withsoft metal heads are unsuitable asfragments of the metal may break off andenter the bearing.

Make sure the bearing is assembled at aright angle to the shaft (spindle).

lf necessary use a driving-on sleeve thatabuts the ring which is to be assembled withan interference fit, othen¡vise there is a riskthat the rolling elements and raceways maybe damaged and premature failure mayfollow.

ño

IJ

'IIri

ir

.,J

l1ñ!B.É

5.6.3 Friction coupl¡ng

lf the separator does not attain full speed withinabout 2 minutes, the friction elements or-thecoupling may be worn or greasy, The frictionelements must then be replaced with new ones orthoroughly cleaned from grease.

Before the friction coupling is assemblec,examine all parts thoroughly for wear andcorrosion.

Use a driving-on sleeve for bearings that are notheated

A worn coupling increase start-up time

l:I.:¡.Jl

t'.,..t

77,' ¡

' ¡ {i:i..,-.': ..i: i.r!:'''.'ti;:fi'

5.6 Common maintenance dírqtions 5 Service lnstructions

5.6.4 Shutdowns

lf the separator is shut down for a period of time,the following must be carried out:

. Remove the bowl, according to instructions inchapter "6 Dismantling/Assembly" on page81.

NOTE

The bowl must not be left on the spindleduring standstill for more than one week.

Vibration in foundations can be transmiftedto the bowl and produce one-sided loading ofthe bearings.

The resultant indentations in the ball bearingraces can cause premature bearing failure.

Protect cleaned carbon steel pañs againstcorrosion by oiling. Separator parts that arenot assembled after cleaning should be wipedand protected against dust and dirt.

The Grings should be removed.

lf the separator has been shut down for morethan 12 months, a Major Service (MS) shouldbe carried out.

,,,

tr..$:í:.

"i i

j'iilI l--;,, :.i:

tlbJ

IEir::l

s:.

á

*tf

a

a

.^t

ás.:r: ,

,xL'r,ii I

-,i:*

iutl

. * ji.]

.n.. .\"r

I,. .{,': i

...,j

'l',.ii

r t-'3:'9t i

Dismantling for shutdown

78

,r:,a 5 Eervícelnsfrucfionstt':t

5.7 üfting instructions

;1

t"n:l¡-"r 5.7;

¡

Lifting instructions,l Nfa Laval ref.558102" rcu 0,l: l' For lifting parts and assemblies of pads use liftingj. slings, working load limit (WLL): 300 kg.

,IFe'tlJ, Lifting the separator.r,

'|l" ] 1. Remove the separator bowl, see dismantlinginstructions in "6.2.1 Bowl" on page 83.

2. Attach endlesi slings or cables to theseparator as illustrated. Check that the.hinged bolts fixing the separator cover istightened.

3. Líft and handle with care.

Weight to lifk 200 kg.

NOTE

Remove the separator bowl before lifting toprevent bearíng damage.

tI

{:

',.i-..¡

;f

Do not lift the separator in any other way

,ili

;ti,!

ri

WARNING

Crush hazards

A dropped separator can cause accidentsresulting in serious injury to persons anddamage to equipment.

79

5 Service lnstructions

5.7 Lifting instructions

BO

6 DismantlinglAssemblY

82

82

82

82

6.1

B3

83

86

89

Gontents

6.2

6.5

General6.1.1 References to check Points

6.1.2 Tools

6.1.3 Tightening of screws

Dismantling6-2.1 Bowl

6.2.2 Vertical driving device

6.2.3 Horizontal driving device

Assembly6.3.1 Horizontal driving device

6.3.2 Vertical driving device

6.3.3 Bowl

Feed and discharge PUmPS

6.4.1 GenóraldescriPtion

6.4.2 Dismantling

6.4.3 AssemblY

Frame feet

6.5.1 Mounting of new frame feet

6.3 93

93

96qq

102

102

103

107

111

1't1

6.4

81.

6.1 Qeneral 6 DismantlinglAssembly...-¡t I

6.'l General

The parts must be handled carefully. Don't placeparts directly on the floor, but on a clean rubbermat, fibreboard or a suitable pallet.

6.1,1 References to check points

In the text you will find references to the checkpoint instructions in Chapter 5. The referencesappear in the text as in the following example:

r' Gheck point"5.3.4 Disc stack pressure" on page 58.

In this example, look up check point "5.3.4 Discstack pressure" on page 58 for furtherinstructions.

6.1.2 Tools

Special tools from the tool kit shall be used fordismantling and assembly. The specialtools arespecified in the Spare Parts Catalogue.

For lifting parts and assemblies of parts use liftingslings, working load limit (WLL): 300 kg.

6.1.3 Tightening of screws

When tightening screws, use the torques stated inthe table below unless othen¡vise stated. Thefigures apply to lubricated screws tightened with atorque wrench.

METRIC THREAD

Thread

Torques in Nm

Stainlesssteel

Carbonsteel

M6 7 8

M8 17 20

M10 33 39

M12 57 68

M16 140 155

M20 275 325

M24 470 570

i*l-td""*J' i

ffi,=1...3¡ I

i'IEiit .

L,-$ I

.ffi

$;I

ffi, 9,,-i. "J. r

' "i'

- -'l

t;

li

t::

;i

i:i j

,-.ti:l

r!ii j¡j

i .li

¡,. Ll

i.i¡

r -tl

82

6 Dism antling/Assem bly 6.2 Dismantling

6.2 Dismantling. To avoid accidental start, switch off and lock

power supply.

6,2.1 Bowl

1. Be sure the bowl has stopped rotating

.=

r:i

R evo I uti o n counter i n dicates rotati o n

DANGER

Entrapment hazards

Make sure that rotating parts have come to acomplete standstill before starting anydismantling work.

The revolution counter indicates if separatorparts are rotating or not.

Lock power supply

Do not dismantle any parts before complete standstill

83

6.2 Dismantling 6 DismantlinglAssembly

2. Loosen the hook bolts and remove thecollecting cover.

Tighten both lock screws.

The bowl parts can remain hot for a

considerable time after the separator hascome to a standstill.

4. Unscrew the small lock ring by using thespecial tool, "Spanner for small lock ring".

Left-hand thread!

Tighten both lock screws

Small lock ring

r'"...\F+

mI gt'-i;i¡f'

?r,1.'j'.ff.:v

f,ra;3^{;,:.:

:' _'¡

.i

\)

Hook bolts

84

6 DismantlinglAssembly 6.2 Dismantling

Itr:

[:E

li

\- . 5. Unscrew the large lock ring by using the

i. specialtool;'spanner for lock rtng" and a tin

6 hammer.

't"'-'l Left-hand thread!

t.t

T"]ai€i

'ItIl:

. Y|.4i

.l

f 6. Lift off gravitY disc.

'r' 1 Note! lf the gravity disc has to be replaced

i i owing to changed operating conditions't.rr..t Lm out the top disc, disc stack and distributor.

CAUTION

Cut hazard

Sharp edges on the separator discs may

cause cuts.

7. Unscrew the caP nut.

Release the two lock screws.

Lift out the bowl body using the hand tool.

Large lock ring

1. Cap nut2. Both lock screws3. Lift bowl body from spindle

.éi

I.,Ét

ii

ffi

#jl$

íG4,>{IHté

85

6.2 Dismantling 6 Dismantling/Assematy

Soak and clean allparts thoroughly insuitable cleaninQ agent, see "5.4 Gleaning"on page 69.

Remove Grings and renew them with sparesfrom the Major Service kit.

Check point"5.3.1 Conosion" on page 54,'5.3.2 Erosion" on page 56,"5.3.3 Crabks'on page 57.

6.2,2 Vertical driving device

Remove the outlet housings, feed and dischargepumps and raise the collecting cover. Removealso the separator bowl.

Before dismantling, in the case of 8000 hoursservice, or if the separator vibrates while running:

r' Gheck point"5.3.6 Radialwobble of bowl spindle" onpage 60.

1. Drain off the oil

Force out the conical pin of the worm wheel.

fT:"

1

,.r,J

{ r'lti i.l.ls;"$

.i.Í¡lF:jir.i i::r

f

hx*

Fj-l¡.

r'

i'i

j

I,j

I,,''^¡

ts

!,,l

I€

)!t¡'" i': ..it;

86

:i,TJ

6.2 DismantlingÁ::,,:,, 6 Dismantling/AssemblYi.1i :i;

J

i-' i 2. Push worm wheel aside.

,i

!'F't' ]

1

I

r. l1

nf'I,t-::

1

l

['[rji

[,;

IJ:

'1

| 3. Loosen the sPring cas¡ng'

vertical driving device'tt.

4. Loosen the buffers and remove housing'

rw\ll

87

6.2 Dismantling 6 Dismantling/Assembly

5. Flemove the collar.

Left-hand thread!

6. Use the pullertoolto dismantle the upper ballbearing.

i

.:."J

I

¡

7. Remove the snap ring.

WARNING

Riskfor eye injury by flyingsnap nng

Use the correct pliers for dismantling andassembly of snap ring to avoid accidentalrelease.

88

6 Dism antlinglAssem bly 6.2 Dismantling

l!F.*l

I

F ..,

J

r:

Ilir I

I

j

rt,,!

8. Remove the ball bearing sleeve together withthrust ball bearing and height adjustingring(s).

9. Pull off lower ball bearing gently.

6.2.3 Horizontal driving devjce

1. Drain gear housing from oil see "5.5.1 Oilchange procedure" on page 73. Removeguard for worm wheel and force out theconicalpin in worm wheel.

E

L

1

'i. 'tl!

rÉ,I

, ""]

;i,I

t.l,:.É'[

Ic

B9

6.2 Dismantling 6 Dismantling/Assembty

2. Bemove lock ring, sight gtass and seal ring(valid for machine with feed and dischargepump).For machine without pump go to point 5.

{!,\

; i .l'..*d'

-31ry6:g: #::l, :?É

3. Loosen screws of inspection box.

4. Remove coupling guard and force out thetubular pin in coupling half on horizontaldriving shaft.

,..!

I

l

I.,:

É

.,

II

+.: ,::x

?,

I.t

:;J

-i

:i

ir

i*! 1

90

6 Dism antlinglAssem bly 6.2 Dismantling

IL¡

l

tr.ij

;

i-...,tII t:\..i I

,l ,j

t-[,=,-

tEiI

¡

¡"E

5. Loosen end shield. Remove pump togetherwith inspection box.

For machine without pump: Loosen andremove guard. Force out the pin at shaft endand remove space sleeve.

6. Remove the rnotor.

Renew the pads on the friction blocks.

When refitting the blocks make sure thearrow on each block points-in the samedirection of rotation See the arrow on theframe.

Secure the blocks with washer and split pin.

lf the friction elements are worn: Fit newones.

Renew allfriction elements even if onlyone is worn.

lf the friction elements are only greasy:Clean the friction elements and the inside ofthe coupling drum with a degreasing agent.

Loosen the three screws holding the sealingwasher.

7.

I

8.

91

¡

6.2 Dismantlíng 6 Dismantling/Assembly

9. Knock gently on shaft end to get the bearingsout of their seats. Then use the worm wheelto knock off bearing from shaft. Removebearing and worm wheel.

10. Remove the horizonial driving shaft

11 . Use the puller tool to pull off the protectingcover and ballbearing. Protect end of wormwheel shaft with a washer.

m' .1:"1

'i ¡'13:

l

i',rÍIi J:

ft:Xr{

'' L"{ :

j

li

il

',.,

'), i

l.

i'Il!'

i#.,.]

:t

'rl

92

6 Dism antling/Assem bly 6.3 Assembly

F

,t" I

I

':

t.[r

tItL! 1

ijli'''j

,l

I

t

I

I¡: l

tf

t1 1

iI

I

:gt- i:='ltit.,4

ffl,¡wtsr ,_' g-

s.F.r,

6.3 AssemblyClean all parts in a degreasing agent and renewparts supplied in the Spare pads kits.

r' Check po¡nt"5.3.1 Corrosion" on page 54,"5.3.2 Erosion" on page 56,"5.3.3 Cracks" on page 57,"5.3.12 Top bearing springs" on page 65,"5.3.13 Ball bearing housing" on page 65,"5.3.14 Worm wheel and worm; wear ofteeth" on page 66.

6.3.1 Horizontal driving device

1. Fit protection cover on worm wheel shaft.Heat bearing in oil before rnounting ontoshaft.

2. Clean the ball bearing housing in the frameand oil the outer race of the ball bearing.

Fit the gasket and enter the shaft through thebearing seat in the frame.

;i[

.ri

;lt

,aj

;it

iL

93

6.3 Assembly 6 Dismantling/Assematy:lr ül:l

lo: 'l

3. Enter the worm wheel on shaft and force theworm wheel shaft to its position in the frame,so that the ballbearing enters conectly intoits seat.

Observe that largest ends of the holes forconical pin in shaft and worm wheelshouldpoint in same direction.

4. Secure the protection cover with the threescrews.

Fit the 'loose'ball bearing. Secure the wormwheelwith the conical pin.

' *r-'r'fI 1",. IL*J i

m:ü! 5 u,ü-4" l

ll

*3e

.g i

€,,,9

DANGER

Disintegration hazard

When replacing the gear, always make surethat the new worm wheel and worm have thesame number of teeth as the old ones.

i: i$.\,.

x

-J

lilÍ1 r'r.-'-!

I

94

:!

:¡:i

6 Dismantling/Assembly 6.3 Assenbly

r'

i" .:

;

tiilIIr.¡rfÍ\-'.='j

I

Lift the motor in position and tighten the motorbolts.

lf the coupling disc has been loosenedwithout first marking its position on the motorshaft, the correct position for position ofcoupling disc must be determined again.

Check po¡nt"5.3.9 Coupling disc of motof'on page 63.

6. Fit coupling half on worm wheel shaft beforemounting the pump.Remember the gasket.

Fit the coupling guard with two screws.

For machine without pump fit distancesleeve and pin at the end of horizontal shaft.Fit and secure the guard.

t

tl

,.

. i"'t.l,I

:

I

¡

"lI

:

It

..,.1..

t

It

4¡

DANGER

Disinteg ration hazards

When power cables have been connected,always check direction of rotation. lfincorrect, vitalrotating parts could unscrewcausing disintegration of the machine.

95

6.3 Assembly 6 DismantlinglAssematy

6.3.2 Vertical driving device

Before assembling the bowl spindle, make surethe relevant checks have been carried out.

Wipe off and oil the bearing seat before fitting theballbearing

lnspect the tapered end of the bowl spindle andassemble ball bearings.

'Heatthe new ballbearings in oilto max. 125 "C.

NOTE

Always fit new bearings.

lf any doubt how to mount roller bearings in acorrect way, see the detailed description inchapter "5.6.2 Balland roller bearings" onpage 75.

1. Fit the two bearings onto the shaft.

CAUTION

Burn hazards

Use protective gloves when handling theheated bearings.

.:

?f,

+..¡ iII

,'2

f'ar{i;:

-{bY6e!oi

.i

'rJ, !

l

ii, I

-trI

j

'l: :Í.-r,'l

j

¡i ..!..-il

:

'1,,1

!1j

i

li; i 1i:4.,.¡r j

J

J

r1ri.:1.,*l

k

96

j.., r

6 Dism antlinglAssembly 6.3 Assembly

2. Fit ball bearing housing and throw-off collar.Left-hand thread!

3. Fit the ball bearing sleeve together with thrustbearing and height adjusting ring.

4. Secure the assembly with the snap ring.

WARNING

Risk for eye injury by flyingsnap ring

Use the correct pliers for dismantling and

assembly of snap ring to avoid accidental

release.

97

6 Dismantling/Asse mblY

6.3 AssemblY

Flace spring casing to rest on shoulder of

rpp"tÉá'ri olaring housing' Fit buffers and

ililg" into casing' Tighten the caps'

Place the gasket in the right position at the

nottom of itre seParator frame'

Fit the cap nut to the spindle and lor19r.]ne

asse;bü into the separator tt"I-t^..1]t tnu

i,u*n"t.'.nd tighten the three screws'

l'r,i :il-1-...:"

I

l

{

j

ilL !',.. .l

11:.3

il :¡

ir

6.

7.

r

'iiif$

,uii .!.

"i'i

't"'\i

i t'"

¡.^

iri ,t

9B

¡1j

nlt:,i6 DismantlinglAssem bly 6.3 Assembly

1.

'{:.:\,1

.l

."

:l

ilI

lj

6.3.3 Bowl

Make sure that the check points are carried outbefore and during assembly of the separatorbowl.

Gheck points"5.3.8 Bowlspindle cone and bowl bodynave" on page 62.

Wipe off spindle top and nave bore in thebowl body. Apply a few drops of oil onto thetaper, smear it over the sudace and wipe it offwith a clean cloth.

I

l

Il

2. F¡t the distributor with the disc stack.

Fit the top disc and bowl hood.

I 3. Make sure the guides are in correct position.j

i:'It

,R|-lg,i

99

6,3 Assembly ' 6 Dismantling/Assembty

4. Secure the bowl from rotating. Screw in bothlock screws.

5. Degrease lock ring threads, contact andlocating faces (see arrows above). ApplyMolykote 1000 paste to the threads and facesstated.

Brush in the paste according to themanufactu rer's directio n.

6. Tighten lock ring counter-clockwise (left-handthread) untilbowlhood lies tightly againstbowl body (in a new bowl marks will now be inline with each other.

Left-hand thread!

t/ Gheck point"5.3.4 Disc stack pressure" on page 58.

tr'fli_.J

'':J

fr,&i!:4..,J :'

lí

i¿j

jJt,

''#..i

'i- i

., I

Jral

r, .31;rL

i:t,

WARNING

Disintegration hazard

The assembly mark on the lock ring mustnever pass the mark on the.bowlhood bymore than 25" (0r45 mm).

100

6 Dism antling/Assem bly 6.3 Assembly

7. Release both lock screws and tighten clampbolts.

NOTE

The two lock screws must be fufly releasedto prevent risk of damage to bowl body,

Fit the connecting hoses if they have beenremoved. Make sure to fit their gasket rings

101

6.4 Feed and díscharge pumps 6 Dismantling/Assembly

6.4 Feed and dischargepumps

6.4.1 Generaldescription

1. Relieflsafe$ valve:

Examine valve cone and valve seat.

2. Bushings:

Renew the bushings if they are scratched orthere is a play between shaft and bushing.

3. Wearing seals:

Renew the seals if the surface is rough,crackled or dented by the impeller.

Lipseal rings:

Renew the rings at the annualoverhaul.lmportant! Turn the rings the right wayround.

Flexible coupling:

Check wear on flexible element.

lmpeller shaft:

Check wear on sealing surface on theimpeller shaft.

Disengagement:

The feed pump can be disengaged by turningthe impeller (6), thereby placing the drivingblade of the impeller in the recess of theshield.

ii:::¡'$tf,al;.J

ffi.t. :¡L.J

' ;:1.

'ád

il

4.

,i;rt,1,.'-J i

"j

I

I

I

i.;::tl

i

1

6.

7.

Double pump

1. Bushings2. Wearing seals3. Upsealrings4. Flexible coupling5. Impeller shaft6. Disengagement7. Axialplay

I

J

¡

iJJ.''"'j¡-.i

I

F#,t' .i.i

t..t

l

l

1,

1

j

{

I

.,.j., 1

.,*..

.iij{ityjj,s

,q

102

6 Dismantling/Assembty 6.4 Fed and discharge pumps

t',I

8. Axialplay:

The totalaxialplay (1) must be 0.1 - 0.3 mm.lf the play is too large even though thewearing seals have been renewed, it can becompensated by adding a brass leaf liner.

f nsert the liner at (2).lf the play is too small,grind off the bearing holder (3).

6.4.2 Dismantling

1. Remove the pipe connections of the pump.

Screw off the lock ring of the sight glass.

Remove the upper gasket and the sightglass.

Remove the screws of the control housing.

Lift the control housing with the lower gasketand the connecting piece.

Unscrew the oil drain plug and empty thegear housing of oil.

Axial play 0.1 - 0.3 mm

103

6.4 Feed and discharge pumps 6 Dismantling/Assembty

2. Remove the guard over the flexible coupling.

Drive out the tubular pins from the wormwheel shaft and impeller shaft. Turn the bowlby hand untilthe pins are in a convenientposition.

Undo the fourscrews holding tne pumpshield, remove shield.

Do not lose the valve cone and spring.

Il

"l

"i

104

6 Dismantling/Assembly 6.4 Feed and discharge pumps

5. Insert two screws into the centre hole of theimpeiflers. Use the screws as a handle towithdraw the impellers.

6. Remove the impellers for inlet pump.

7. Repeat step 5 and.6 for the outlet pumpimpellers.

,l.l

--_¡

il:i:i

-..f

;-lii

ItI

105

6.4 Feed and discharge pumps 6 Dism antling/AssemDry

8. Undo the four screws holding the pump

housing. Remove housing, do not lose valvecone and spring.

9. Check that the lipseal rings are in good

condition.lf the seal rings are worn or damaged:Remove the pump shield frorn the separatorframe, knock out the old sealring(s) andreplace them.

n

I\106

6 Dismantling/Assembly < 6.4 Feed and discharge pumps

;.J

''r:1

6.4.3 Assembly

1. Fit new lipseal rings. Be sure to turn it theright way around, the closed side should pointoutwards to air. Start with the one atpumpside of the shield.

2. Lift pumpshield in place and secure it withone screw at top of shield, do not tighten itfully. Be careful not to damage the seal ringwhen entering the worm wheelshafl.

Fit and secure the coupling half with thelarger pinhole on worm wheelshaft. Put theflexible element in place.

::i

I:i

09

107

6.4 Feed and discharge pumps 6 Dismantltng/asset r uty

4. Place the Gring in PumP housing.

Put the spring and valve cone in place in thepump shield.

5. Place the bushing with shoulder in pump

shield (flat side vertical pointing to center).

Enter the other bushing into pump housingwith flat side to center.

Fit housing by entering over the bushing in

shield. Ensure that valve cone enters thevalve seat.

Fit and tighten the screws'

6. Put the wear gaskets one at each side of theoutlet impellers, then place the bushings onein opposite direction to the other on impellershaft.

Keep all parts together and push the packagein to pump housing.

re:i'l

'g¡i:

i{.".,,r i

:.'-)

i i,, ¡l

'$¿:* :

:

"ir${.l

i..--A 1

I

I

.;

i

I

t.

:

t

1'it

iiil

1r'lj '"r

;i

,J!,. .i-

108

íi

i:I

,l=:l 6 Dism antling/Assem bly 6.4 Fed and discharge pumps

ri

I

7. Repeat point 6 for inlet impellers.

Note that the tongue on impeller shaft shouldfit in the slot of outlet impeller shaft.

Press gently until the impeller shaft is visibleat the coupling side. Enter the coupling halfon shaft and press the package in place.

Fit and tighten the six screws for bearingshield.

Secure the coupling half with the pin.

Rotate the bowl to align the holes.

10. Place O-ring in the groove in pump housingand the spring and valve cone in purnp shield.

Fit pump shield and fasten it with four screws.

109

6.4 Feed and díscharge pumps 6 Dismantling/Assemoty

rli

It

t

11 . Fasten the guard over the flexible coupling.

12. Fit control housing and its pipes.

13. Connect all pipings.

,i

I

]

-4'g

zi;

t.-1'

1

rl'I

1'nÉl{

"illai

t,

t,,'i-:'J

Jilil:,.:

f.!

i

i-'i

.lf

..:

r"i

r

:==-

110

'1

átl"J

11%.:i ,

ttl

It

"'l

6 Dism antling/Assembly 6.5 Framefeet

. .,j

:J-

" ."J

',I

e'^ 1

I

;;i

i1i.. J

6.5 Frame feetWhen renewing the frame feet, the separatormust be lifted.

See "5.7 Lifting instructions" on page 79.

NOTE

Always remove the bowl before lifting theseparator.

When lifting and moving the separator, follownormal safety precautions for lifting large heavyobjects.

6.5,1 Mounting of new frame feet

1. When the separator has been lifted, removethe old vibration dampers (3).

2. Fit the new vibration dampers on the bolts.

3, Lift the separator in to position.

4. Tighten the nut (2) with t6 Nm.

Hold the nut firmly and secure with the locknut (1). Repeat for the other frame feet.

,"-lt''

I

J

I¡,r

I

Frame foot with vibration damper1. Lock nut2. Nuf3. Vibration damper

111

6 Dismantling/AssembY

6.5 Frame feet

¡

112

t-,i

.,1 Trouble-tracingi

,fi-:J-It;1¡' 1

:

:i

t| ,.-..."

"-tl

lI| .."...i

7.1 Trouble tracing procedure 114

7.2 Mechanicalfunction 114

7.2.1 The separator does not start 114

7.2.2 Stari-up time too long 114

7.2.3 Starting power too low 115

7.2.4 Starting power too high 115

7.2.5 Separator vibratesexcessivelyduring starting sequence 1 16

7.2.6 Separator vibratesexcessivelyduring normal running

7.2.7 Smell

7.2.8 Noise

7.2.9 Speed too high

7 -2.1A Speed too low

7 -2.11 Stopping time too long

7.2.12 Water in oil sump

7.2.13 Liquid flows through bowl

casing drain

7.3 Purification faults7.3.1 Unsatisfactoryseparation

result

7.3.2 Outgoing water contaminatedbY oil

7.3.3 Broken water seal

7.4 Clarification faults 122

7.4.1 Unsatisfactory separation result 122

7.4.2 Oil discharge through water outlet 122

t

116

117

117

tlI

118

118

118

119

120

120

't20

121

Trouble.tracing

lf the problem is not solvedin the System Manual's

Troubletracing, continuewith this chapten

Study theSystem Manual'sTroubletracing

chapter first.(if applicable)

I

113

7.1 Trouble tracing procedure / lroufJrc-Lrauiltg

7,1 Trouble tracingprocedure

This chapter applies to trouble'tracing concemingfunctions of the separator only. lt does not includethe other equipment in your processing system.

Always start with trouble-tracing instructions inthe System Manual, and if required, continue withthe instructions below. lf the problem still is notsolved, contact your Alfa Laval representative.

7.2 Mechanical function

FTF'F"1

lJ-l;'r+-'

ili.-i. 'l

¡É{tr'

"."s;:-l

"l

i{

r-ü'&'u::,

h

i${"

7

ta:

i

;i'\,:.

l*'l: ...1.

Ji!í:'i

x

7.2.1 The seDarator does not start

Possible cause Action

No power supply to motor.

Bowl lock screws stop rotation.

Check power supply.

Release lock screws.

7,2.2 Stañ-up time too long

Possible cause Action

Brake applied.

Friction pads worn or oily.

Motor failure.

lncorrect power supply (50 Hz instead of60 Hz).

Bearings damaged or worn.

Release brake.

Fit new friction pads.

Repair.

Use conect power supply. See machine plate.

Installnew bearings.

114

,t:,i17 Trouble-tracing 7.2 Mechanical function

Possible cause Action

Motor failure.

Friction pads worn.

Friction pads oily.

Repair the motor.

Fit new friction pads.

Fit new friction pads.

Possible cause Action

Bowl lock screws stop rotation.

Brake is on.

Motor failure.

Gear worn out.

Bearing damaged or worn.

Incorrect transmission (50 Hz gear and60 Hz powersupply).

Wrong direction of rotation.

Release lock screws.

Release brake.

Repairthe motor.

Renew worm wheeland worm.

lnstallnew bearings.

A OnNeeR: Disintegration hazard

STO P im mediately! | nstall correct transm issio n.

Contact your local Alfa Laval representative. Thebowlmust be inspected.

STOP. Adjust motor power connection.

115

7.2 Mechanical functian 7 Troublelracing

7,2.5

7,2.6

Separator vibratesexcessively during start¡ngsequence

i

¡

''8

..:]:

a

Separator vibratesexcessively during normalrunning

NOTE Some vibration is normalduring stading sequence when the separator passes throughits criticalspeeds.

Possible cause Action

Bowlout of balance due to:

poor cleaning

incorrect assembly

too few discs

insufficiently tightened bowl hood

bowl assembled with pañs from otherseparators.

A OnftegR: Disintegration hazard

STOP immediately! ldentifu and rectify cause.

Vibration dampers in frame feet wom out.

Bowlspindle bent (max. 0,15 mm).

Top and/or bottom bearing damaged orworn.

Top bearing springs defective.

Fit new vibration dampers.

Fit a new bowlspindle.

Fit new bearings.

Fit new springs.

Possible cause Action

Uneven sludge deposits in sludge space.

Bearings damaged or worn.

Vibration-damping rubber washers wornout.

Spindle top bearing spring(s) broken.

STOP and clean bowl.

Fit new bearings.

Fit new frame feet washers every four years.

Renew all springs.

116

7 Trouble-tracing 7.2 Mechanicalfunction

1,,,

["' -

l.'

7.2.7 Smell

7.2.8 Noise

7.2.9 Speed too high

I

t

llI

[..i

I

Possible cause Action

Normal occurrence during start as the(new) friction blocks slip.

Brake is applied.

Top and/or bottom bearing overheated.

None.

Release the brake.

Fit new bearings.

Possible cause Action

Oil level in oilsump is too low.

Top and/or boüom bearing damaged orworn.

Friction pads wom.

STOP and read oil leveland add oil.

Fit new bearings.

Fit new friction pads.

Possible cause Action

Incorrect transmission (50 Hz gear

running on 60 Hz power supply).

Frequency of power supply too high.

A onHc ER : Disintegraüon hazard

STO P immediately! lnstall correct transm ission.

Contact your local Alfa Laval representative. Thebowl must be inspected.

Check.

117

7.2 Mechanicalfunüon 7 Trouble-tracing

Possible cause Action

Brake is on.

Friction Pads worn or oilY.

Motorfailure.

Top/bottom bearings damaged or worn,

Bearing overheated/damag ed.

lncorrect transmission (60 Hz gearrunning on 50 Hz Power suPPlY ).

Release the brake.

Fit new friction pads or clean ihe old ones if they areoily.

Repair the motor.

Fit new bearings.

Fit new bearings.

Make sure that the gear is intended for 50 Hz powersupply.

7.2.1A Speed too low

7.2,1'l Stopping time too long

Possible cause Action

Brake lining worn oroily. Fit new brake lining or clean the old one if it is oily.

f:.ic

t:!

7.2.12 Water in oil sump

Possible cause Action

Bowl casing drain obstructed.

Leakage at top bearing.

Condensation.

Glean. Change oil.

Fit a new seal ring and change oil.

Glean the oil sump. Change oit.

118

7 Trouble-tracing 7.2 Mechanical function

7.2.13 Liquid flows through bowl

:

I

It'

casing drain

Possible cause Action

Broken water seal.

Too high throughput

The supply of displacernenUsealing wateris not sufficientdue to clogged strainer,kinked hose or low water pressure.

Seal ring on gravity/clarifier discdefective.

Bowl hood sealring defective.

Bowl speed too low.

Stop feed and feed water to create water seal.

Reduce the feed.

Straighten the hose or clean the strainer. Make surethe water pressure is 200-600 kPa (2-6 bar).

Fit a new seal ring.

Fit a new seal ring.

Make sure cunent is on and brake is off. lnspectmotor and power transmission.

:t"-t..

1

ii.l".

:

j

!1,.l

119

7.3 Punfication faults 7 Trouble-tracing

7.3 Purification faults

7.3.1 UnsatisfactoryseParationresult

r il-'HJ;.."i

F-}

'ffi'lú,3',

rtrrt1.. J,

Possible cause Action

Gravity disc hole ioo small.

lncorrect separating temperature.

Throughput too high,

Sludge space in bowlis filled.

Disc stack clogged.

Bowlspeed too low.

Use a gravity disc with a larger hole.

Adjust temperature.

Reduce throughput.

Empty the sludge basket in the bowl.

Clean the bowl discs.

See "7.2.10 Speed too loW'on page 118.

7.3.2 Outgoing watercontam¡nated bY oil

Possible cause Action

Gravity disc hole too large.

Seal ring under the gravity disc defective.

Use a gravity disc with a smaller hole.

Fit a new seal ring.

120

7 Trouble-tracing 7.3 Purifrcation faults

7.3.3 Broken water seal

-ir'ta

i'

-i'l '' I

i

.,1: 1

r1

l

I

I

I

I

I

!{

'i

lj¡

it

'i

'llj

[.i!

L

I

,l.

,:l

.':l',ir

Possible cause Action

Gravity disc too large.

Separation temperature too low.

Throughput too high.

Sealing water volume too small.

Seal ring under Eavity disc defective.

Disc stack clogged.

Bowl speed too low.

Bowl incorrectlv assembled.

Use a gravity disc with a smaller hole.

Increase temperature.

Reduce throughput.

Supply more water.

Fit a new seal ring.

Clean the bowldiscs.

Use correct speed. See "7.2.10 Speed too lo#'onpage 11 8.

Examine and make correct.

121

7 Trouble'tacng7.4 Clarification faults

7,4 Glarification taults

7.4.'l UnsatisfactoryseParationresult

Possible cause

Adjust.

Reduce throughPut.

Re-assemble and operate the separator as a purifier'

Clean the bowl discs.

Empty the sludge basket.

See "7.2.10 Speed too loü'on page 118'

Separating temPerature too low.

ThroughPut too high.

Feed oil contains water.

Disc stack clogged.

Sludge space in bowlfilled'

BowlsPeed too low.

7 -4.2 Oil discharge through wateroutlet

Possible cause

Open the valve(s) and adjust to normal back

pressure.

'Clean the bowl discs.

Fit a new seal ring.

Examine and make conect.

Valve(s) in outlet line closed.

Disc stack clogged.

Seal ring under gravity disc is defective'

Bowl incorrectlY assembled.

122

Technical Reference

8.3

8.4

8.5

8.7

I

I

t,

I

L

8.8

I

t

l'¡1.

;,ll *

ü1,,

124

129

130

131

Gontents

8.1 Technicaldata

8.2 Basic size drawing,separatorwithout pump

Basic size drawing,separatorwith pump andno heater

Basic size drawing,separator with pump and heater

Connection list,with pump and no heater/without pump

Gonnection list,with pump and heater

Interface description8.7.1 Definitions

8.7.2 Component description andsignal processing

8.7.3 Function graph andrunning limitations

Lubricants8.8.1 Lubrication chart, general

8.8.2 Recommendedlubricatingoils

8.8.3 Recommended oil brands

8.8.4 Recommendedlubricants

8.6

128

132

133

133

134

135

136

136

138

139

142

8.9 Drawings 144

8.9.1 Cross-section, complete separator 144

8.9.2 Cross-section,horizontaldriving device 145

8.9.3 Cross-section, purifier bowl 146

8.9.4 Cross-section, clarifier bowl 147

8.9.5 Cross-section, pump 148

8.9.6 Cross-section, water inlet device 150

8.9.7 Electric motor, 1.1 kW 151

8.9.8 Electric motor, 1.5 kW 152

8.9.9 Machine plates and safety labels 153

8.10 Storage and installation 155

8.10.1 Storage and transport of goods 155

8.10.2 Planning and installation 156

8.10.3 Foundaüons 159

123

8.1 Technicaldata 8 Tshnical Reference

8.1 Technical dataAlfa Laval ref.55818, rev0

Units according to ISO Standard.

The rnanufacturer reserves the right to changespecificatio ns without notice -

Product number

Separator type

Application

Designed in accordancewith standards

Hydraulic capacity

Max. density of sediment

Max. density of feed

Feed temperature

Ambient temperature

Motor (with pump)

Motor (without pump)

itiil:i

tGJ*F

881241-08-14

MAB 1048-14124

Continuous purification of mineral oil from solid particlesand water.

Intended for marine and land applications.

The flash point of the oilto be separated must be minimum60'c.

89/392 EEC

91/368 EEC

93/44 EEC

EN 292-2

Maximum 2.0 ms/h

1600 kg/mg

991 kg/ms, (mechanicalsafety max. 1100 kg/ms)

Minimum 0'CMaximum +100 "C

Minimum +5'CMaximum +55 "C

4-pole 1.5 kW standard motor, 50 or 60 Hz, 3-phase.Directon-line start.

lf Y/D-start is used maximum 5 seconds in Y position.

4-pole 1.1 kW standard motor, 50 or 60 Hz, 3-phase.Direct on-line start.

lf Y/D-start is used maximum 5 seconds in Y position.

,ir',,:iL .lq*

¡

.t

The Council Directive of theEuropean Communities. (CE-marking is possible if manual isincluded in the delivery).

Safety of machines. Use of themachine in applications subjectedto hygienic demands requires awell adapted cleaning program.

r: .j

td

124

Itt

l

lt-

8 TechnicalReference 8.1 Technicaldata

,l

Éú:::f

Power consumption

Speed

Starting time

Stopping time

Maximum running timewithout flow

Inlet pump, built-on

Outlet puDF, built on

Sludge and waterspacevolume

idling

running (at max.capacity)

(at starting-up)

2 - 3 minutes

Running down withbrake applied

without brake

empty bowl

filled bowl

Capacity:

Pump type 534391-82Pump type 534391-83Suction liftDelivery head

Capacity:

Pump type 534391-82Pump type 534391-83Delivery head

0.5 kw

1.8 kW

1.3 kW

min. 1.4 minutesmax. 3.0 minutes

I minutes (average)

480 minutes

480 minutes

50 Hz

2.15 m3/h1.08 m3/h

50 Hz

2.38 m3/h1.19 m3/h

Max.4mwg(manometric)Max. 15 m wg (manometric)

The prescribed speed of the bowl spindle which must not

be exceeded, is stamped on the name plate of themachine.

Gear ratio 50:10 49:12

Maximum speed ofrotation, rpm

5O Hz 60 Hz

Motor shaft speed

Revolution counterspeed

Bowl speed

1 500

79-83

7500

1800

95-100

7350

I

I

l,

f.i

;;'$'I

Iv'1\i

60 Hz

2.58 m3/h1.30 m3/h

60 Hz

2.86 m3/h1.43 mslh

15 - 25 m wg (depending on flow

and viscosity)

iIIJI ..,

i,,I

1.26 likes

8.1 Technicaldata B Technical Heferencv

Required water quality

Lubrication

Lubricating oil volume

Weight

Shipping data

Sound power level

Sound pressure level

Vibration level

Materials

0.8 litres

Separator withoutmotor

Motor

Complete bowl

According to "Basicequipmenf'

Weight

Volume

9.3 bel(A) ISO 3744

78 dB(A) ISO 3744

Max. for separator inuse

Bowlspindle, lock ring

Frame, lower andupper pafis

Collecting cover

Bowl body and hood,disc stack, gravity disc

Other bowl parts

Other inlet and outletpañs

Net weight approx. 149 kg

Approx. 16 kg

Approx.25 kg

280 kg gross

0.79 mg

9 mm/s (RMS)

steel

cast iron ("centriblue" finishl)

silumin (grey finishl)

stainless steel

brass

stainless steel, brass, cast iron

I)An epoxy enamel

Fresh water

see "8.8.1 Lubrication chad, general" on page 136.

i,,J.¡ h{ü

;l: .!

I

FT')¡r,ffL

fl"tl'ii:;l

, ,:-1

i1'; ii

.1 .,

L[-*

fx,1-., fu:l'

"i

Any risk for corrosion and erosion has to be investigated in each case by the applicationcentre.

Fu¡ther restrictions and instructions are found in the set of complementary documents.

.., 126::-. l¡. i,i(',i".:1.

.':iÉ

t

.1

I

8 TechnicalReference 8.1 Technicaldata

AKw

2.O

50 Hz

,l

ilx

I

l_nj:t"

Ir, -i

III

l[]

1950 Uh

1950 l/h

II.L -.'}

I

Power consumption at start-up, power input vs time

Power input (kW) 1) Feed pump -20 kPa (02 ba) ; Outlet pump O kPa (O bar)

Idling 2) Feed pump -40 kPa (-0.a baQ ; Outlet pump 150 kPa (1.5 bar)Start-up time (min) 3) Feed pump_-20 kPa (-0.2 bar) ; Outlet pump 250 kPa (2.5 bar)

A.

B.

c.

127

8.2 Basic size drawing, separator without pump 8 Tuhn¡ca! HeIeíetr.v

8.2 Basic size drawing,separator withoutpump

Alfa Lava! ref. 5581&, reu. 0

A. Screw 3/8-l6UNCB. Tightening torque 16 Nm, locked with lock nut

Data for connections see "8.5 Connection list, with pumpand no heater/ without pump" on page 131.

All connections to be installed nonloaded and flexible.

'1t"'3

$$.

fr'BI

. !r:,

II

-4xI

i

, rl"t

t'¡

:

:

{

,É

j'¡1

:,,1-i,i J

.rn i,t,,4

-i', !'',.. -J'-'ii I

'r.€j]l1

'4l:l

Vertical force not exeeedingI kMfoot

Horizontalforce notexceeding 8 kN/foot

128

i

¡

t1:l\11l

":l

11

I

"t

8 Technical Reference 8.3 Basic size drawíng, separator with pump and no heater

r" I 8.3 Basic size drawingn

' separator with pump'=J ?nd no heater:(AJfaLaval ref.566281, rat 0

:

'1

A. R 3/4u, BSP 3/4

B. R 1 1/4,,BSP11/4c, D. B 'lu, BSP 1

E. 1/2-13 UNC

F. Wew

Data for connections see "8.5 Connection list, with pump

and no heater i without pump" on page 13'1.

Al! connections to be installed nan-loaded and flexible.

Vertical force not exceedi ngI kNlfoot

Horizontalforce not' exceeding 8 kN/foot

129

395

iI

I

tlI'-lI

8.4 Basic size drawing, separator with pump and heater 8 Tshnical Reference

8,4 Basic size drawingnseparator with pumpand heater

Alfa Laval ref. 558164; reu. A

'"áifr: i

'tdi-

ñn":its

i".

¡

A. Screw 3/8-16UNCB. Tightening torque 16 Nm, locked wíth lock nut

Datafar connections see "8.6 Connection list, with pumpand heatec' on page 132.

All connections to be installed non-loaded and flexible.

Vertical force not exceedingI kMfoot

Iiorizontalforce notexceeding I kN/foot

' 1.1" '-

t:,. ,i.

.j.

, l;f' 1..: ?:

. .. :,!l;gi:;.:iii

..-,T.!tr-:' -1,,

:r,, ,,"l'1 .1ialF.

'i::::'d

íi,

1

130

,,Ili!I!

i,!

i,

¡9

{etNifl

;1," 1

I

8 Technical Reference 8.5 Connection líst, with pump and no heater / without pump

8.5 Connection list,w¡th pump and noheater / without pump

flfa laval ref. 558165, rat 0

r:Lli

i

ll

ti

Connection No. Description Requirements/limit

201 lnlet for process liquid- Allowed temperatures Min. 0 oC, max. 100 "C

206 lnlet for water seal Fresh wqte6 approx.2.5 litres (depending ongravity disc)

220 Outlet for light phase (oil from pump)

221 Outlet for heavy phase (water) No counterpressure

460 Drain of frame

701 Motor for separator- Max. deviation from nominalfrequency(momentarily during maximum 5 seconds)

!5%+10o/o

760 Cover interlocking switch (delivered as option)

Type: Double, two-way microswitch

Switch rating: Voltage

Curient

Max. 500 V

Max.3 A

131

8.6 Connection list,with pump and heater 8 Technrcan Hereíertuv

8.6 Gonnection list,w¡th pump and heater

Alta Laval ref. 558166, rev 0

Connection No. Description Requirements/limit

201.1 lnlet for process liquid, (to pump)- Allowed temperatures Min. 0 "C, max. 100 "C

201.2 Outlet for process liquid, (from pump to heater)

201.3 Inlet for process liquid, (from heater to separator)

206 Inlet for water seal Fresh water, approx.2.5 litres (depending ongravity disc)

220 Outlet for light phase (oil from pump) No counterpressure

221 Outlet for heavy phase (water) No counterpressure

460 Drain of frame

741 Motor for separator- Max. deviation from nominalfrequency(momentarily during maximum 5 seconds)

+5o/o

!1Oo/o

260 Cover interlocking switch (delivered as option)

Type: Double, two-way microswitch

Switch rating: Voltage"

Current

Max. 500 V

Max. 3 A

:l

!¡;'$.

iJ.

i;

1I

132

;:*-¡

8 Technical Reference 8,7 lnterface descriptionFi¡

il 8.7fi

Alfa Laval ref. 557119, tev 2

i i ln addition to the Gonnection List this documenti".,,i describes limitations and conditions for safe

,-...,.r control, monitoring and reliable operation.

I i At the end of the document a function graph andL'r running limitations are to be found.

I

:

I

i

..i

8.7.1 Definitions

, Standstillmeans:

,l . The machine is assembled correctly.

i . All connections are installed according toI Connection List, lnterconnection Diagram)' ánd Interface Description.

.' Start means:

I . The power to the separator is on.

.. .J

l' " o The acceleration is superuised to ensure that[ , a certain speed has been reached within acedain time. See "8.1 Technicaldata'on

' Page124.

i' Normal stop means:

j o Stopping of the machine at anytime with feed

r,J or safetylbackup liquid and with brakeI , applied.

lnterface description

t,

"j

'lj

l'j

I

l

,i

.l,,1

I

133

8,7 lnterface descnption B T*hnicalReference

Safety stop means:

The machine must be stopped in the quickest andsafest way due to vibrations or process reasons.

Comply with following conditions:

. The bowl must be kept filled.

. The machine must not be restarted before thereason for the Safety stop has beeninvestigated and action has been taken.

ln case of emergency condition in the plant, themachine must be stopped in a way that isdescribed in EN 418.

8.7.2 Gomponent description andsignal process¡ng

Electrical connections

Separator motor 701

The separator is equipped with a 3-phase DOL-started (direct on line) motor. The separator canalso be started by a Y/D starter, but then the timein Y-position must be maximised to 5 seconds.

Gover interlocking switch 760 (option)

The cover of the separator is equipped with aninterlocking switch. When the cover is closedtheinterlocking circuit in the sta¡.ter control is closedand the separator could be started.

Signal processing:

The circuit is closed when the collecting cover ofthe separator is closed.

The interlocking switch should be connected sothat starting of the motor is prevented when theseparator collecting cover is not closed.

li.l|fi,

-+

t

i

:

iF;

f'{;i

;:.:::.i

t:.:-r:,n

:

f.'

134

1

.j:tj

Lc ltí i:l

8 Technical Reterence 8.7 Intertace descriPtion

1-"1

' .,i, L.^.d

l,-"l

i,'l=t;1..==ll1.,,

I,i,iI'1" "t..

8.7.3 Function graPh and runninglimitations

A. Stand stillB. Starting mode

C. Running mode

D. StoP modeE. SafetY stoP mode

I

-1.lt

', ,'t l

!:J .

l$!- .

i

135

8.8 Lubricants 8 TechnicalReferenee

8.8 Lubricants

8.8.1 Lubrication chart, general

Alfa Laval ref. 582'l ñ1, reu 6

;;\',ffi,-,.: !

,

iR.'Fj'q "

i._f I

i.i

I

ii¡ i.ti l

i'4,i,J,B*j

I

€4-Ít'i...: i

i

Alfa Laval Lubricating Oil GrouPs:

. Group A oil: a high quality gear oil onparaffin base with stable AW (antiwear)additives.

. Group B oil: a high quali$ gear oil onparaffin base with stable EP (extremepressure) additives.

¡ GrouP D oil: a synthetic base oilwithadditives stable at high operatingtemperatures.

Do not mix different oil brands or oils fromdifierent oilgroups.

Always use clean vessels when handling

lubricating oil.

.

r],e'.]:lt, l

),¡! |:;

136

,:

:ri,

i,, r,,

,:i?

I

ti"3

J

Lubricating points Lubricants

Bowlspindle ballbearings and buffers arelubricated by oilmist

Lubricating oilas specified in "8.8.2Recommended lubricating oils'on page 138

Bowlspindle taper Lubricating oil (only a few drops for rustprotection)

Buffers of bowl spindle Lubricating oil

Bowl:

Sliding contact surfaces and pressure loadedsurfaces such as lock rings, threads of lock rings,bowl hood, and cap nut

Pastes as specified in "8.8.4 Recomrnendedlubricanis" on page 142

lf not specified otherwise, follow the supplier'srecommendation about method of application

Rubber seal rings Grease as specified in "8.8.4 Recommendedlubricants" on page 142

Friction coupling ball bearings The bearings are packed with grease andsealed and need no extra lubrication

Electric motor (if nipples are fitted) Follow manufacturer's instructions

8 TechnicalReference 8.8 Lubricantsi

t

'1

j

,l

¡.', i Great attention must be paid not to contiaminate

i i the lubricatingoil. Of particular importance is toavoid mixing of different types of oil. Even a few

,,-,.1 drops of motoroilmixed into a synthetic oil may

L j result in severe foaming.

Any presence of black deposits in a mineral type

f*'l oil is an indication that the oilbase hasI "l deteriorated seriously or that some of the oil

additives have precipitated. Always investigate," '] why black deposits occurs.

' j lf it is necessary to change from one group of oil, :i brand to another it is recommended to do this ini connection with an overhaul of the separator., Clean the gear housing and the spindle parts

thoroughly and remove all deposits before fillingthe new oil.

NOTE

Always clean and dry parts (also tools)before lubricants are applied.

NOTE

Check the oil level before start. Top up whennecessary. Oilvolume see "8.1 Technicaldata" on page 124.

It is of utmost importance to use the lubricantsrecommended in our documentation. This doesnot exclude, however, the use ofother brands,provided they have equivalently high qualityproperties as the brands recommended. The useof oil brands and lubricants other thanrecommended, is done on the exclusiveresponsibility of the user or oil supplier.

Applying, handling and storing of lubricants

Always be sure to follow lubricant manufacturer'sinstructions.

i.i

,4J=

ti

137

8.8 Lubricants B Technical Reterence

8.8.2 Recommended lubricatingoils

Alfa Laval ref. 553219-10, rcu 0

Three different groups of lubricating oils areapproved.They are designated as Alfa Lavallubricating oilgroups A,B and D.

The numerical value after the letter states theviscosity grade.

The corresponding commercial oil brands

according to " Alfa Laval lubricating oilgroup fu22|, on page 139, ",Alfa Laval lubricating oilgroup 8/220" on page 140 and " AIfa Lavallubricating oil group A/2zA'on page 141.

Note:

In a new installation or after change of geartransmission, change oil after 200 operatinghours.

When the separator is operated for shortperiods, lubricating oil must be changed'every 12 months even if the total number ofoperating hours is less than stated in therecommendations above.

Check and prelubricate spindle bearings onseparators which have been out of service for6 months or longer.

In seasonal operation: change oil beforeevery operating period.

rr<

t.i¡

;"1

,li,

:

t,

1

f,*,{,r, i

j

1I

,lii

I

i

J

I

j

Ambient temPerature 'G Alfa Laval lubricating oilgroup

Time in operationOil change interval

Between +5 and +45 Al22A W220 1500 h

Between t2 and +65 Dt220 2000 h

138

, 8 TechnicalReference 8.8 Lubricants

:,

"i' 8.8.3 Recommended oil brands

NOTE

The data in below tables is based on supplier information in regards tolubrication properties. Trade names and designations might vary fromcountry to country, contact your local supplier for more information.

Brands with Alfa Lavala¡ticle number are approved and recommended foruse.

Affa Laval lubricating oil group Al22A

Alfa Laval ret. 55321&01, reu. 2

Alfa Lavallubrication oilgroup A

Viscosity grade VG (lSO 344813104)Viscosity index Vl (lSO 2909)

220>92

Manufacturer Designation

Castrol Alpha ZN22O

ELF Polytelis 220

Esso/Exxon Nuto 220Tersso 220Terrestic 220

Mobil DTE OiIBB

Optimol Ultra220

Shell. Morlina 220Tellus 220

Texaco/Caltex RegalOil22OPaper Machine Oil Premium22O

139

8.8 Lubricants B T*hnical Re¡erence

;;F*.,{

r.,.i,

ffixi,.*1 j

Alfa Laval lubricating oil group 8,1220

Alfa Laval rd. 553218-02, rat S

* These oils must be used when the frame temperature is above 80 "C.

lf you can't verify the temperature by measuring, a rough estimate is that80 "C is when you can touch the surface of lower part of frame for a shorttime only.

J

at:,.

ji:'{rr.,

Alfa Laval lubrication oil group B

Viscosity grade VG (lSO 3448/3104)Viscosity index Vl (lSO 2909)

220>92

Manufacturer Designation

Bel-Ray 06-220

BP Energol GR-XP 220

Castrol Alpha SP 220

Chevron Ultra Gear 220Gear Compound EP 22O

ELF Epona 2220

Esso/Exxon Spartan EP 220

Fina Giran 220

Mobil Mobilgear 630(Mobilgear SHC 220) * Synthetic

Optimol Optigear BM 220

Q8/Kuwait Petroleum Goya220

Shell Omala 220(Delima HT 320) " Synthetic

TexacolCaltex Meropa 220

140

8 Technical Reference 8.8 Lubricants

Alfa Lavallubrication oilgroup D

Viscosity grade VG (lSO 344813104)Viscosity index Vl(lSO 2909)

220>135

Manufacturer Designation

Alfa Laval 542690-80 (20 litres)542690-81 (4 litres)542690-82 {208 litres)542690-83 (1 litre )

BP Enersyn HTX 220

Castrol Afphasyn EP 22O

ELF Epona SA 220

Mobil SHC 630

Shell Delima HT 22OPaolina220

:

I

I '| '.-r

l.I

:J

li

rl''.,

-,],¿,

.lt";: ,

141

8.8 Lubricants 8 TshnicalReference

8.8.4 Recommended lubricants

Alia Laval ref. 559217-01, ran 7

NOTE

The data in below tables is based on supplier information in regards to lubrication properties.

Trade narnes and designations might vary from country to country, contact your local supplier formore information.

Brands with Alfa Laval article number are approved and recommended for use.

Pastes for non'food applications:

Manufacturer Designation Alfa LavalNo.

#

Fuchs Lubritech Gleitmo 805KGleitmo 705K

Dow Corning Molykote 1000 (Paste)Molykote 1000 (Paste)

Molykote G-rapid plus (Paste)

537086-02 (1 000 g)537086-03 (1 00 g)537086-04 (50 g)

Rocol Antiscuffing (ASP) (Paste)

Klüber Wolfracoat C (Paste)

Bonded coatings:

Manufacturer Designation Alfa LavalNo.

/ñ-:Fuchs Lubritech Gleitmo 900 (Varnish or spray)

Dow Corning Molykote D321R (Spray)Molykote D321 R (Varnish)

535586-01 (300 ml)535586-02 (60 ml)

Silicone grease for rubber rings:

Manufacturer Designation Alfa LavalNo.

Dow Corning Molykote 1 1 1 (Compound)Molykote 11 1 (Compound)

539474-02 (100 g)539474-03 (25 g)

Fuchs Lubritech Gleitmo 750

Klüber Unisilkon L 250 L

Wacker Silicone P (Paste)

i

.Ji

:l

142

8 Technical Reference 8.8 Lubricants

Greases for balland roller bearings:

NOTE

Always follow the specific recommendation for lubrication as advised by themanufacturer.

Manufacturer Designation Alfa Laval No.

BP Energrease MM-EP2Energrease LS2

Castrol APS 2 GreaseEPL 2

Chevron Dura-Lith Grease EP2

Etf Epexa 2

Esso/Exxon Beacon EP2Unirex N2

Fina Marson EPL 2A

Mobil Mobilith SHC 460Mobilux EP2

Gulf Gulflex MP2

Q8/KuwaitPetroleum

Rembrandt EP2

Shell Alvania EP Grease 2Albida Grease EP2

SKF LGEPZ or LGMT2

Texaco Multifak AFB 2

143

8 Technical Reference

8.9 Drawings

8.9 Drawings

8.9.1 Gross-section'comPlete

i

:f'l

.i

:r i]r:: l

i.)

I

l-rii i

I

:

:t

i1!' :ir, 1,.i

?,1

'¡": tl:5'l

:

i

i't3' h:',t -.i r..

i f.tii' i' i.1,

i1tl,1

i;;i E¡¡{

separator

ComPlete seParatol

144

8.9 Drawings8 TechnicalReference

1

:.i

t;t'It.

r,t':

8.9.2 Gross'section, horizontaldriving device

Horizontal driving device

145

8 Teohnical Reference8.9 Drawings

8.9.3 Cross'sect¡on,puritierbowl

)

t::t

.)

'ii:¡ I

l

1

1)-]" i

'li ¡

,tji,t l

;J''i:,"r

a

g;i$

't....;.

it

.,::

l

I.i., .:\

tIi

Purifrer bowl

146

':

,:::] 8 TechnicalReference 8.9 Drawings

'l

8.9.4 Gross.section,clarifierbowl

Clarifier bowl

147

B Techntcal Reference

8.9,5 Gross'section'pump

lffi,.,'t..;i ,-i

ffi:r"l i'l

8.9 Drawings

I.¿.3.4.E

6.7.B.

9.

Sealing ringGouPlingRetaining ring

Sealing ring

PumP imqeller

PumP imPeller

Shieldélál"a tubutar sPríns Pin-

óPtt"a tubular sPring Pn

i.,r,'..1r. l

j

,:

148

l!.t

8.9 Drawings1i¡ 8 Technical Referencer

1. CouPling guard

t'l

¡

II

1,.,

149

8 T*hnical Reference

B-9 Drawings

8.9.6 Gross'section' water inlet

device

i

It

r. 1r ,..i.:t

Í,¿rtÉBn

Hose niPPle

Pac!<ingSight glassPacking

150

8 TechnicalReference 8.9 Drawings

"'-$

8.9.7 Electric motor, 1.1 kW

AltaLaval rd. ffi1590, rett 3

A. Knockout openings for cable glands on both sides, 2 x a23B. Sheef-sfeelfan hoodC. 4 holes o12

Manufacturer ABB MotorsManufacturers drawing Cat. BfuMarine motors GB 98-05

Standards IEC 34 series, 72,79,85Size IEC 90SType M2AA 90SWeight 13 kgPoles 4

fnsulation class F

Bearings DE:6305-22C3

Method of cooling lC 41 (lEC 34-6)

Specification Totally enclosed three-phase motor for marine service

Note! Motor bearings are permanently lubricated

Type of mounting(rEc 34-7)

Degree ofprotection(rEc 34-5)

{:)

0

ü

tM 3001

tM 3011

rM 3031

¡P 55

lP 55

lP 55

t

151

8.9 Drawings 8 TwhnicalReference

8.9.8 Electric motor, '1.5 kW

Alfa Laval ref, 551614, reu 3

:,t,¿i3

"FtE:¡_;.."!

ffit. Iti.",,J

'i'1

iJ'

,ilr

ñ.!á

,Jr

'1

. .J

- ,l

diF "ro

A. Knockout openings for cable glands on both sides, 2 x s23B. Sheet-steelfan hoodC. 4 holes a12

ManufacturerManufacturers drawingStandardsSizeTypeWeightPolesInsulation classBearings

Method of coolingSpecificationNote!

ABB MotorsCAT. BAJMarine motors GB 98-05IEC 34-series, 72, 79, 85tEc 901M2AA gOL

16 kg4FDE:6305-22C3NDE: 6204-2VC3tc 41 (rEc 34-6)

Totally enclosed three.phase motor for marine seruiceMotor bearings are permanently lubricated

I,J

i,i ,'r. l

:

j';,i'i

.:' rf,¿.tr "

thg ..

-1,f*-ffi,i/8 | -l l. I

\ag¡fl

Type of mounting(rEc 34-7)

Degree ofprotection(rEc 34-5)

D0

ü

tM 3001

tM 3011

lM 3031

lP 55

tP 55

tP 55

152

8 TechnicalReference 8.9 Drawings"e. r

;

ii

t: :

irr'''']

8.9.9 Machine plates and safetylabels

Alfa Laval ret. 558097, rev. 1I ,,,

.-

.

i,

;

I

'

i,

l

I

4. Machine plate

Separator

Manufacturing serial No i Year

Product No

Frame

Bowl

Max. speed (bowl)

Direction of rotation (bowl)

Speed motor shaft

El. current frequency

Recommended motor power

Max. density of feed

Max. density of sediment

P rocess temperature min.lmax.

MAB 1048-14t24

XXXX

881241-08-14

549807-01i02t03tM

524724-92t82

7500 r/min. (50 Hz),7350 r/min. (60 Hz)

<-

1500 /min. (50 Hz), 1800 r/min. (60 Hz)

50/60 Hz

1.1 / 1.5 kW (with pump)

1100 kg/mg

1600 kg/mg

0/100"c

'1.:,: i

153

8.9 Drawings 8 Technical Reference

1. Safety label

Text on label:

DANGER

Read the instruction manuals before installation,operation and maintenance. Consider inspectionintervals.

Failure to strictly follow instructions can lead tofatalinjury.

lf excessive vibration occurs, stop separator andkeep bowl filled wiih liquid during rundown.

Out of balance vibration will become worse if bowlis not full.

Separator must stop rotating before anydismantling work is started.

2. Name plate

3. Power supply frequency

5. Arrow

lndicating direction of rotation of horizontal drivingdevice. .

6. Stop, follow lifting instruction

This transport labelis not permanently fixed to theseparator.

itrüF'l ,1,i ii.

r-!lt:''!! 1 !'s rl'

ir":llr- l-tsJ ,

...it

i.ffi'Fr.fl'I:.S I

l

lÍFli'

'. ll'{:

,¡ii',¡tü

i;T,.

J

i

f-\tltfat:tlvffiffiffi**

154

8 Technical Reference 8.10 Storage and installation

1

,,17

*-:.1

iu¿

-ii,t',j

^:lil.i

8.10 Storage andinstallation

8.10.1 Storage and transPort ofgoods

Storage

Specífication

Upon arrival to the store, check all componentsand keep them:

1. Well stored and protected from mechanicaldamage.

2. Dry and protected from rain and humidity.

3. Organized in the store in such a way that thegoods will be easily accessible wheninstallation is about to take place.

A separator can be delivered with difierent typesof protection:

o Fixed on a pallet.

The separator must be stored in a storageroom well protected from mechanical damageand also dry and protected from rain andhumidity.

In a wooden box which is not water tight-

The separator must be stored dry andprotected from rain and humiditY.

In a specialwater-resistant box for outdoorstorage.

The separatorand 'rts parts have been treatedwith an anti-corrosion agent. Once the boxhas been opened, store dry and protected

from rain and humidity.

The packaging for outdoor storage is only to

specialorder.

i.. :.i

'1I

:

'i

¡

,:I

Fixed on a pallet

ln a wooden box which is not water tight

ln a special water-resistant box for outdoor storage

155

8.10 Storage and inskllation 8 TshnicalReference

Transport

Sper,ification

. During transport of the separator, the framehood and bowlmust always be removedfrom the machine.

¡ When lifting a separator it must always behung securely. See chapter "5.7 Lifting

instructions" on page 79.

WARNING

Crush hazard

Use correct lifting tools and follow lifting

instructions.

r During erection, allinlets and outlets to

separators and accessories must be coveredto be protected from dirt and dust.

8.10.2 Planning and installation

Introduction

The requirements forone or more separators canbe established by consulting the following

documents.

o Basic size drawing

. Connection list

¡ Interfacedescription

o Interconnectiondrawing

o Foundation drawing

o Lifting drawing

These are included in this chapter "S Technical

Reference" on page 123.

Check the drawings when planning he installation

l'i"+ll''t

rFr'f;" 1 l. ,,

ii, ,

l:. J,til,-'s-:;,1

I

.i

:l],.. l. ¡"

'..'jj

,1

i

156

8 Technical Reterence 8.10 Etorage and installation

,J

- lmportant measurements

','r lmportant measurements are the minimum liftingheight for lifting tackle, shortest distance betweendriving motor and wall, free passage for

iir dismantling and assembly, maintenance and

r"l operation.

i ; Plan your installation with sufficient room for the''- controls and operation so that instruments are

; 1 easily visible. Valves and controls must be within

requirements for maintenance work, work

," 'i benches, dismantled machine parts or for a

: seruice trolleY.

.l

..,,1 Space for separator

.. .! The separator shall be placed in such a way thati suitable space for maintenance and repair is, obtained.

' Specification

. See the "Basic size drawings" on pages 128,I 129 and 130 for the service space required

" with the separator installed.

l

Recommendation

I o The spanner lor the large lock ring shóuld' 'r have sufficient space to make a complete'i turn without hiüing any of the ancillary

j equipment surrounding the separator.

i

Suitable space must be obtained for the maintenancework

157

8J A $orage and installatíon 8 TwhnicalReference

Lifting height for transport of bowl

Specifícation

r A minimum height is required to lift the bowl,bowl parts and the bowl spindle.

Recommendation

. When two or more separators are installed,the lifting height may have to be increased toenable parts from one separatorto be liftedand moved over an adjoining assembledseparator.

NOTE

Remove the separator bowl before lifting.

WAHNING

Crush hazard

Use correct lifting tools and follow lifting

instructions.

Do not work under a hanging load.

Space for oil changing

Specification

. The plug for gearbox oil draining must not beblocked by floor plate arrangement, etc.

Recommendation

. lt should be possible to place a portable

collecting tray under the gearbox drain plugfor changing oil.

Do not lift the separator in any other way

'f,4'1ri.,qJ 1

J

ffi\'f{'l: l, j

l

r!1

) ii;:1,.4

,iJ ,

;-,fr

ñ$. :3

ret=8,

Ao¡

L

v

t'tir;t'i¡

Place the separator in such way that makes the oilchange easy

"1;-l

i

158

8 TechnicalReference 8.1 0 ttorage and installation

i

,j

8.10.3 Foundations

Specitication

. The separator should be installed at floorlevel, see the "Basic size drawings" on page130, 129 and 128.

. The separator must be installed on a strongand rigid foundation to reduce the influence ofvibrations from adjacent machinery.

Fit the separator frame on the foundation asfollows:

1. Place the separator without vibrationdampers (3) in position.

2. Check that the bolts do not press against theedges of the holes, otherwise the elasticity ofthe mounting of the separator frame will beimpeded.

3. Check that the separator frame is horizontaland that allfeet rest on the base plane.

4. Fit height adjusting washers required.

5. Lift the separator, fit the vibration dampers(3), lower and check that the bolts do notpress againstthe edges of the holes.

6. Fit the nut (2)and tighten with 16 Nm. Holdthe nut firmly and secure with the lock-nut (1).Repeat for the other frame feet.

Frame fóot with vibration damper

1. Lock nut2. Nuf3. Vibratíon damper

j

I

l

1

I

,Li

::5

:1 1

¡

.il...t

159

B Technical Reference8.10 Storage and installation

160

-¡l l:l

;J,,J

:..?

Reader's Comment Form

Dear reader,

It is our ambition to produce as useful and instructive manuals as possible. Should you have anycomments (positive or negative) regarding this manual, please note them down and send them tous. You can do this by copying this page and sending it by fax, or you could mail it, or hand it overto your local Alfa Laval representative.

Alfa Laval Separation AB, Separator Manuals, dept. SKEL, S-147 80 Tumba, Sweden.Fax: +46 I 53031040,

Your name:

Address:

Country:

Company:

City:

Product MAB 1O4B-14124

Date:

Book No.: 1270276-02V6

ls it easy to find what you are looking for by using the table of contents?

Are the chapter and section headings clear and adequate?

ls the information presented in the correct order for your purposes?

Does the information in the manual cover your needs?

ls it easy to understand the instructions in"the manual?

ls the terminology sufficiently explained?

Are the illustrations easy to understand?

Your comments:

No

JJJJ1JJ

Yes

JJJD

JuJ

,ii

larlri

161

,, I

-]li rilF"q l

, :.1 ll:::lt1

flrl|w4,,,; Éf:]tr'1, ¡il! 1

I

i

I

I

II

i', IIlli,t

i:,r

'[ii=

t\,n:

¡

162

;. Order Forml lf you wish to order extra copies of this manual, please copy this page and give it to your locali:' Alfa Laval representative, who willadvise you of current prices.

f:^ Your local Alfa Laval representative will also be able to help you with information regarding any

W- other manuals.

Your name:

Address:

Country:

Company:

City:

Product MAB 1048'14124 Book No.: 1270276-O2VG

Quantity: Date:

Gomments:

ilil:l

..,j

i]:{

169

164

i.{..'i

i!.í .i lndex

l

,I B

BasicBasic size drawing

Separator with pumP and heaterSeparator with pumP and no heater

Separator without PumPBearings

Assembly of bowl spindle bearingsBall bearing housing damageMaintenance directions

BowlAssemblyDismantlingLock ring damage

BowlcleaningProcedure

BowldiscsCleaningDisc stack pressure

BowlspindleAssemblyDismantling

BrakeCheck pointFunction

Broken water seal

G

GlarificationDefinitionOil discharge through water outletUnsatisfactory separation result

Clarifier discDefinition

CleaningBowldiscsExternal cleaningFuel oilseparatorsLube oil separatorsTime intervals

Connection listSeparator with pump and heaterSeparator with pump and no heater /without pump

CorrosionCheck pointsMaintenance logsOiling of partsShutdowns

CouplingExchange of friction elementsFriction padsFunctionGeneral maintenance

Cover interlochng switch (option)Cracks

Check poinisMaintenance logs

D

128

130129128

966575

998359

A-lal

7258

9686

g4

30121

32122

122

32

72

69

IU

7041

131

132

131

4914tl78

9'l

64en

77

31

5749

Centrifu gal separationCheck points

Ball and roller bearingsBall bearing housingBowl body naveBowl spindte cone

BrakeCorrosionCoupling disc of motorCover interlocking switchCracksDisc stack PressureErosionFriction padsHeight position of bowl / bowlspindleLock ring / wear and damageRadial wobble of bowl sPindleTooth aPPearence

Top bearing sPrings

Worm wheeland worm

Basic size drawing with pump and heater 130

Basic size drawing with pump and no heater 129

Basic size drawing without pump 128Clarifier bowl 147

Gomplete separator 144Electric motor 151, 152

Horizontaldriving device 145

Machine plates and safety labels 153

Pump 148,149Purifier bowl 146

Water inletdevice 150

16

7565626264546368575856646150

60676566

Daily checksDensity of feedDisc stack pressureDrawings

49

12458

lciilif:

ii

165

..'3 i

'F1" .

";r, I

ME

Electric motor. See MotorEmergency stopErosion

Check pointsMaintenance logs

Excessive vibration during normal runningExcessive vibration during starting sequence

F

Main partsMaintenance

Ball and roller bearingslntervalsProcedureService kits

Major serviceMaterialsMaximum running time without flowMetal surfaces

CorrosionCracksErosionGear teeth wear

MotorCoupling discDrawingMotor cleaningPower consumption duríng start

N

40, 134

5649

116116

20

7546484852

126125

54575666

159

111

'Ft-r-,.,

.iii:{4

,i:,:,it'i.,-.-..' I

f=-¡:,{*, I

FoundationFrame feet

Vibration dampers exchange

G

fA¡,I

.=.ir.,, _t

i

.

GearNumber of teethWear of gear teeth

Gravity discDefinitionDismantlingSelection

H

12566

328535

63151, 152

6938,127

NoiseSound power levelSound pressure level

o

126126

P!*

i

Horizontal driving deviceAssemblyCheck pointsDescriptionDismantling

I

93953089

oilBefore first startOilchange procedureSight glass

Oil discharge through water outletOutgoing water contaminated by oil

P

347331

121120

lnstallationCheck pointsPlanning of installation

lnterfaceDefinition

Interface description

L

Lifting instructionLiquid flows through bowlcasing drainLoc* ring

Wear and damageLubricants

Before first startLubrication chart, general, oil groupsOilchange intervalOilchange procedureOillevelRecommended lu bricatin g oilsRecommended oilbrandsVolume of lubricating oil

166

Periodic maintenancePower consumptionPower transmission

DescriptionPump

Axial playBushingsCapacityCheck pointsDismantlinglmpeller shaftLipring sealsShear pin couplingWearing seals

34156

32133

46125

30

79119

59

103102125102102102102102102

J

l:*, i

:

.li' :É.i

3

l

¡{i; .,

:

'\i;

jj

34136138

7373

138139126

:'li:'' 'l::

1

:i

::i

r' '!,t:;1

Lt!i"..-._

¡'-

,("=l1i1lr

4=

PurificationBroken water sealDefinitionOutgoing water contaminated by oilStart procedureUnsatisfactory separation resu lt

Purifier bowlCharacteristic parts

Gravity disc

R

Start t'

Check pointsStarting power troo highStarting power too lowStarting timeStart-up time too longStopping procedureStopping time too longStorage

T

37

3511511512511439

118

155

12132

12038

12A

2223

32114

'120

Ready for startRevolution counter -

FunctionSpeed

RotorAssemblyDismantling

Running-up procedure

S

133

31

125

998337

ThroughputDefinition

Trouble tracing

U

Unsatisfactory separation result

v

Safety InstructionsSeparated sludge

Cleaning the bowl

SeparationOptimum separationPurificationTemperatureViscosity

SeparatorStopping time

Separator does not startSeparator vibration levelSeruice intervalsService kitsService logsShear pin couplingShuidownsSludge and waterspace volumeSmellSpeedSpeed too low

o

Á1

Vertical driving deviceAssemblyCheck pointDísmantling

Vibration

968686

3760

74126

24 Criticalspeed2g Spindle wobble

17 Vibration checking

1l Vibration level

w125114126

4648ol

10378

125117125118

Warning signsWater in oilsumpwear of teethWeightWorm gear

FunctionWear of teeth

13

118

66126

3

l;iirI

'ii

ti,.ti

ii4

lir

iiii -:J

3066

167

liii-': ::i

i ,:1.

rj1.f2t.. i

1

.j

l. j

{..; I

I

nrJl:=i?ií i

J.'ilb. l

1!;),,'{

.t., ¡

h"tl;|

i*:, ]

;:3

i1'' :

,:,l'; iri: ¡

','.''!,

,,"",i

.l',1.

"Jt

'¿i{

'nt1.....:l

ailI