Fuel Transfer Pump

7/30/2019 Fuel Transfer Pump

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Operating Instruction

Unit Construction Pumps

Type

Serial No.

EDUR-PumpenfabrikEduard Redlien GmbH & Co. KG

Postfach 1949 D-24018 KielTel. (+431) 689868 Fax (+431) 6898800

E-mail: [email protected] http://www.edur.com

Please keep your Operating Instruction in a safeplace!

Translation of the original operating instructions!


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Contents Page Page

1 General information 31.1 Design 31.2 Intended Use 31.3 Place of Operation 42 Security 42.1 Identification of Safety Instructions in the

Operating Manual 42.2 Qualification and Training of Operation

Personnel 42.3 Hazards in the Event of Non-Compliance

with the Safety Instructions 42.4 Compliance with Regulations Pertaining to

Safety at Work 52.5 Safety Instructions relevant for Operation 52.6 Safety Instructions relevant for Maintenance,

Inspection and Assembly Work 52.7 Unauthorized Alterations and Production of

Spare Parts 52.8 Unauthorized Modes of Operation 53 Transport and Intermediate Storage 63.1 Transport 63.2 Intermediate Storage 63.2.1 Internal Preservation 63.2.2 Preservation Control 63.2.3 Removal of Preservation 64 Mounting 64.1 Installation 64.2 Connected Loads 74.3 Direction 74.4 Coupling Protection / Protective equipment 74.5 Piping 84.5.1 General Remarks 84.5.2 Permitted loads and torques 84.5.3 Suction Pipeline 84.5.4 Pressure Pipeline 94.5.5 Additional Connections 94.6 Low-Noise Installation 95 Starting Operation/ Stopping Operation 95.1 Preparations for Initial 95.2 Initial Starting 95.3 Restarting 105.4 Stopping Operation 10

6 Service/Maintenance 106.1 Supervision of Operation 106.1.1 Shaft Bearing 106.1.2 Mechanical Seal 116.2 Maintenance 116.2.1 Preparation 116.2.2 Dismounting 116.2.2.1 Pump 116.2.2.2 Dismounting of Mechanical Seal 116.2.2.3 Motor 126.2.3 Mounting 126.2.3.1 General Remarks 126.2.3.2 Mounting of the Motor 126.2.3.3 Mounting of Mechanical Seal 127 Disturbance 148 Pump View and List of Spare Parts 158.1 NUB 300-800 NUB 32 NUBC 300-600

SUB 700 15

8.2 NUBF 300-800 NUBF 32 NUBCF 300-600 168.3 NUBL 300-700 178.4 NUBFL 300-700 188.5 FUB 208.6 FUBL 21

TranslationWhen shipping to EEA Countries, the operating instructions are to be translated into the respective language of the country wherethe device is to be used. In the event that discrepancies arise in the translated text, the original operating instructions (German) areto be consulted or the manufacturer is to be contacted in order to clarify the discrepancy.

Copyright

The forwarding and reproduction of this document, the use and disclosure of the contents of this document is forbidden unlessexplicitly permitted. Failure to comply with this will result in liability for damages.

All rights reserved.


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1 General information The most important operating data can be foundon the identification plate. It must be ensuredthat the pump type and all technical data

correspond to the system / machine projectdata. It must be observed that the electric motoris provided with its own identification platecomplete with additional technical data. The motordata must also correspond with the system /machine project data.

The separately enclosed operating instructionsare also to be observed when dealing with pumpsin accordance with EC Directive 94/9/EC (ATEX).These instructions contain additional instructionsand requirements with regards to the correct andproper use of pumps in potentially explosive

areas.The pumps may not be commissioned untilthe following points have been observed /ensured:

Inappropriate physical and mental strainplaced upon the operation staff must bereduced to an absolute minimum level bytaking ergonomic principles in toaccount.

A safe working environment must beguaranteed. Controls are to be designed

and constructed in such a manner thatno hazardous situations can occur.Furthermore, such situations may notoccur even in the event of faults /breakdown of the control. In particular,the pump may not be unintentionallystarted. It must also be the case that thesupply / discharge lines to and from thepump can also be closed.

It must be guaranteed that the pump canbe safety stopped. Irrespective of thetype of operation, the EMERGENCY

STOP function must be available andready for operation at all times. In doingso, it must be taken into considerationthat equipment connected to the pumpcan also be stopped in the event that ahazard can occur if such equipmentcontinues to be operated.

The supply / discharge lines must beable to withstand the possible internaland external pressure loads

By implementing suitable precautions, it

must be the ensured that no injuries canoccur by touching the pumps, e.g. withregards to extreme temperatures.

When conveying materials that pose ahazard to health / environment, it mustbe ensured that these materials can alsobe collected and taken away safely. Anyrisk with regards to inhalation, ingestion

as well as contact with the eyes, skinand mucus membranes must beprevented.

1.1 Design

Pump in unit-construction with or without anelectric drive unit, with a common or rigidlycoupled pump/motor shaft of different materials,sizes and with different shaft sealings.Self-priming pumps are provided with an inlet

bend fitted at the suction branch.

1.2 Intended Use

Temperature:NUB(L); NUBF; FUB(L) : -40C up to 140CCB(L); CBF(L) BC; CBO : -20C up to 90C (110C)

Operating Pressure:NUB(L); NUBF; FUB(L); CB(L); CBF(L): 10 barBC; CBO: 8 bar

Viscosity: NUB(L); NUBF; CB(L); BC: 115 mm

2/s

FUB(L); CBF(L): 60 mm2/s

Ambient Temperature: -20C up to 40 C

Power adjustmentThe power of the motors is to be reduced inaccordance with the guidelines provided by themotor supplier in the event that the motors arepositioned in ambient temperatures of above 40Cor in a location that is more than 1000m above

sea-level.

The conveying of liquids that maychemically corrode the pump materialor that contain abrasive componentswill destroy the pumps. The conveyed

material must be suitable for use with the pumpmaterial.

The power consumption of the pumpproportionally changes based upon the density ofthe conveyed material. The densities mustcorrespond to the order data in order to avoid

excess strain being placed upon the pump andmotor


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1.3 Place of Operation

The pump unit must be freely accessible for thepurpose of supervision, servicing, maintenance,mounting and dismounting.

Avoid using it in corrosive and very dustysurroundings.The limiting values of the electric drive unit withregard to the insulation material class and thetypes of protection must be observed.For other drive units supplied, see the enclosedseparate operating instructions.

The most important operational data arementioned on the type label. The soundpressure LpA following VDI-guidelines 3743 sheet 1depending on the nominal pump power input Pwill be seen from the diagram underneath.

Fig. Noise emission

The actual sound level ascertained at place ofinstallation will possibly differ considerably fromthese values due to the operating conditions andthe conditions of installation.

Increased noise emissions may be caused bycavitation, faulty / worn bearings or vibrations.Installation, maintenance and service instructionsare to be observed.

2 Security

This operating manual gives basic instructionswhich are to be observed during installation,operation and maintenance of the pump. it istherefore imperative that this manual be read bythe responsible personnel/operator prior toassembly and commissioning. It is always to bekept available at the installation site.

It is not only the general safety instructionscontained under this main heading safety that areto be observed but also the specific informationprovided under the other main headings.

2.1 Identification of SafetyInstructions in the OperatingManual

Safety instructions given in this manual

non-compliance with which would affect safety areidentified by the following symbol:

see DIN 4844-W9or where electrical safety is involved, with

see DIN 4844-W8

Instructions non-compliance with which wouldgive rise to malfunctioning of the machinery areidentify by the word

It is imperative that signs affixed to the machine,e. g.

- arrow indicating the direction of rotation- symbols indicating fluid connections

be observed and kept legible.

2.2 Qualification and Training ofOperation Personnel

The personnel responsible for operation,maintenance, inspection and assembly must beadequately qualified. Scope of responsibility andsupervision of the personnel must be exactlydefined by the plant operator. If the staff does nothave the necessary knowledge, they must betrained and instructed, which may be performed

by the machine manufacturer or supplier onbehalf of the plant operator. Moreover the plantoperator is to make sure that the contents of theoperating manual are fully understood by thepersonnel.

2.3 Hazards in the Event ofNon-Compliance with the SafetyInstructions

Non-compliance with the safety instructions mayproduce a risk to the personnel as well as to the

environment and the machine and results in aloss of any right to claim damages.

CAUTION


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For example, non-compliance may involve thefollowing hazards:

- Failure of important functions of themachine/plant

- Failure of specified procedures of

maintenance and repair- Exposure of people to electrical, mechanical

and chemical hazards

- Endangering the environment owing tohazardous substances being released

Injuries to hands can occur duringmaintenance and repair works.Ensure that all safety instructions areobserved.

Danger areas on the pump

During maintenance and cleaning work, an areameasuring approximately 1 m around the pumpwill serve as a danger area. This area may alsobe increased in size in the event of faults. Theoperating area is only located at the operationelements.

2.4 Compliance with RegulationsPertaining to Safety at Work

When operating the pump, the safety instructions

contained in this manual, the relevant nationalaccident prevention regulations and any otherservice and safety instructions issued by the plantoperator are to be observed.

2.5 Safety Instructions relevant forOperation

- If hot or cold machine components involvehazards, they must be guarded againstaccidental contact.

- Guards for moving parts (e.g. coupling)

must not be removed from the machinewhile in operation.

- Any leakage of hazardous (e.g. explosive,toxic, hot) fluids (e.g. from the shaft seal)must be drained away so as to prevent anyrisk occurring to persons or the environment.Statutory regulations are to be compliedwith.

- Hazards resulting from electricity are to beprecluded (see, for example, theVDE Specifications and the bye-laws of thelocal power supply utilities).

2.6 Safety Instruc tions relevant forMaintenance, Inspection and

Assembly Work

It shall be the plant operator's responsibility to

ensure that all maintenance, inspection andassembly work is performed by authorized andqualified personnel who have adequatelyfamiliarized themselves with the subject matter bystudying this manual in detail.

Any work on the machine shall only be performedwhen it is at a standstill, it being imperative thatthe procedure for shutting down the machinedescribed in this manual be followed.

Pumps and pumps units which convey hazardousmedia must be decontaminated.

Replacement parts that have not been suppliedby the manufacturer are not tested and notapproved for use. The installation and usage ofsuch replacement parts can have a negativeimpact upon the pump characteristics.

The manufacturer is not liable for any damagescaused by the usage of non-original parts.

On completion of work all safety and protectivefacilities must be re-installed and made operativeagain.

Prior to restarting the machine, the instructionslisted under Initial commissioning are to beobserved.

2.7 Unauthorized Alterations andProduct ion of Spare Parts

Any modifications may be made to the machineonly after consultation with the manufacturer.Using spare parts and accessories authorised bythe manufacturer is in the interest of safety. Useof other parts may exempt the manufacturer from

any liability.

2.8 Unauthorized Modes ofOperation

The reliability of the machine delivered will be onlyguaranteed if it is used in the manner intended, inaccordance with our order documentation,especially with the order confirmation.The limit values specified in the data sheet mustunder no circumstances be exceeded. The pumpmay only be operated in the authorised curve

range.


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3 Transport and Intermediate Storage

3.1 Transport

The pump unit must be transported in a level or

horizontal manner.

When transporting the completepump unit by crane, mount theropes as shown in the figure.

The crane facility and the ropes must be ofsufficient capacity. The ring loop of the motormust not be used for transport of the completepump unit.

A pump that is insufficiently securedcan lead to persons being seriouslyinjured.

Hoisting equipment and slinging belts are to besufficiently measured for the entire weight of thepump. If necessary, ensure that the pump issecured during transport with the use ofappropriate slinging equipment. The pump is onlyto be positioned on a surface that is sufficientlysolid and is level in all directions.

Fig. 2.1a Pump and Motor

3.2 Intermediate Storage

On delivery, all pumps are preserved. Thus, theycan be stored for 6-12 months. If the storage timeis longer or the pumps are not in operation, theymust receive additional preservation on the inside.The preservation means (please consult us)depends on the used materials and conditions ofoperation.The storage room must be roofed and wellventilated. Avoid temperatures below zero and

high humidity.

3.2.1 Internal Preservation

Close the suction branch securely. Fill the pumpwith the preservation means and slowly turn therotor manually. Close the pressure branch

securely

A rotating impeller can cut or crushhands and arms. Do not reach intothe pressure or suction sockets of thepump housing.

3.2.2 Preservation Contro l

Check the filling level of the pump and turn therotor by hand at regular intervals of 3 months.Refill preservation means, if necessary.

3.2.3 Removal of Preservation

Prior to operation, the pump must be rinsedthoroughly. In the case of additional preservation,the preservation means on the inside must at firstbe removed.

4 Mounting

4.1 Installation

In principle unit-construction type pumps can befixed to the foundation by means of a footing. Aninstallation by means of a mounting flange at thereservoir or the direct installation into the pipesystem, independent of the position, is onlypermitted for pump types NUB.. and FUB... Theonly restrictions are the size of the pump unitsand the load capacity of the connecting elements.The installation position "motor faced down" isonly permitted with the manufacturer's approval.The pedestal must be even with sufficient loadcapacity and must have fasteners. In the case of

self-priming pumps, the inlet bend must not beremoved or turned around.

Physical injury can occur during thepump installation phase.Safety regulations and the generallyrecognised engineering regulations

are to be observed.

The operator is to ensure a direct and barrier-freeaccess to the pump and must also guaranteegood visibility conditions. The operator is toprotect the pump against environmental impacts

(wind, rain, frost, sand, etc.).

CAUTION


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4.2 Connected Loads

Work must only be executed whenelectricity is switched off. Make surethat the system cannot be powered

on accidentally.

An overload protection system(e.g. motor protection switch, etc.)

must be in place in order to protect the pump andthe motor.

The separately enclosed motor safety guidelinesand instructions are to be observed.

When using motors that are equipped withfrequency converters (FC), the safety guidelines

and instructions contained in the separatelyenclosed FC operating instructions are to beobserved. An appropriate risk analysis is to becarried out by the system operator due to the factfaults and malfunctions of the frequency convertercannot be completely prevented as a result ofelectro-magnetic radiation.

Prior to connecting the pump tothe power system, fill it withpumped liquid. The pump must by

no means be operated without liquid!

The pump must be connected according to

international national requirements as well asaccording to the requirements of the local mainssystem. Voltage and frequency must correspondto the winding of the electric drive. For details ofthe respective winding, see the type label.The motor must not be operated without motorprotection facility.For motors with explosion protection, the range oftemperature of the motor indicated on the typelabel must correspond to the range of the fuelgas.

Overheating damages the three-

phase alternating current motor.Ensure that a sufficient supply of coolair is in place during operation.

Electrical power can lead to death.Ensure that a potential equalisationconnection is in place between thepump housing and the building

earthing.

Incorrect electrical switching modeswill lead to the breakdown of thethree-phase alternating current motor.

Observe the switching mode.

4.3 Direction

Switch on the motor briefly in order to check thedirection of rotation. The motor must not reach itsoperational speed. The direction of rotation must

correspond to the arrow indicating the direction ofrotation on top of the pump. If the direction ofrotation is not correct, perform the relevantmodifications at the phase-sequence

The switching on / operation ofopened pumps (outside of the pipe

line network) is forbidden.

A rotating impeller can cut or crushhands and arms. Do not reach intothe pressure or suction sockets of thepump housing. Secure the pump

appropriately when carrying out a rotationaldirection check.

The dry operation of the pumpdestroys / damages the mechanicalseal and leads to leakage and thedischarge of the conveyed material.

Ensure that the pump is switched off againimmediately after the warm-up phase.

The incorrect rotational direction ofthe pump destroys / damages themechanical seal and leads to leakage

and the discharge of the conveyedmaterial.

4.4 Coupling Protection / Protectiveequipment

The pump must not be operated ifcoupling protection is not fitted. If thiscoupling protection is not supplied bythe manufacturer, the operator of the

pump must supply it himself.

In the event that hot or cold pumpparts lead to hazards, appropriateprotective measures (contact

protection) are to be installed on-site. Operationwithout affixed protective equipment is forbidden.

CAUTION

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CAUTION

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4.5 Piping

4.5.1 General Remarks

Pressure lines are to be laid in accordance with

the respectively valid guidelines as well as therelevant accident prevention regulations. Pipelines and pumps are to be secured againsttripping. If required, a safety area is to beprovided against tripping.The flange covers located on the suction andpressure sockets on the pump are to be removedbefore installing into the pipe line. The containers,pipe lines and connections must be thoroughlycleaned and rinsed before commissioning. It isoften the case that welding beads, scale andfurther contaminants only disengage after sometime. These contaminants are to be kept away

from the pump by implementing appropriatemeasures, e.g. using a filter in the suction line.

Observe the conveying andconnection direction (suction /pressure flange) of the pump. An

incorrect conveying direction of the pump canlead to system faults.

The nominal widths of the pipes must be at leastas wide as those of the pump connection joints.For adapters, use extension angles of 8, ifpossible.

The pipes must be gathered and secured right infront of the pump so that their weight does notaffect the pump. The negative effects of variationsin temperature and occurring oscillation may bereduced by installing a suitable bellow expansion

joint (see section 4.6).Measuring equipment for supervision of the pumpoperation is required.Prior to operation, all parts incontact with liquids must be thoroughly cleaned.

Under no circumstances may thepump be used as a fixed point forthe pipe line. No loads or torques

arising from the pipe line system, e.g. as a resultof twisting, heat expansion, etc. may have animpact on the pump.

Hot and discharged conveyedmaterials pose a risk to life.Do not exceed the permitted pipe lineforces.

4.5.2 Permit ted loads and torques

Maximum permitted loads and torques

Data based upon DIN EN ISO 519

sockets loads [N] torques[Nm]

DN Fy Fz Fx F* M*

32 298 367 315 578 560

40 350 438 385 683 665

50 473 578 525 910 718

65 595 735 648 1155 770

80 718 875 788 1383 823

100 945 1173 1050 1838 910125 1120 1383 1243 2170 1068

*F and M represent the vector sums of the loads andtorques

The data concerning the loads and torques areonly valid for static pipe line strains. All valuesgiven for loads and torques are related to thestandard cast iron material (0.6025).

The permitted loads and torquesare to be reduced by 50% when

dealing with pump models withoutsupport foot located underneath the pump.

4.5.3 Suction Pipeline

The suction pipeline must be as short as possible.Variations in diameter and additional piping mustbe kept to a minimum. The suction pipelinetowards the pump must be rising, the inlet mustbe descending to prevent an air pocket from beingformed. For non-self-priming pumps, installationof a foot valve into the suction pipeline is

compulsory in order to avoid that, in case of astandstill, the pump and the suction pipeline runout of liquid during suction operation.Contamination of the pumped liquid is to beavoided by using a suction hose or a filter. By no

CAUTION

CAUTIONCAUTION

Fz

FyFx

Fz

Fx Fy


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means must air penetrate through the liquid levelvia the suction hose or dirt be whirled up from theliquid pool. Clean the suction hose and filterregularly. To close the suction pipeline in the caseof mounting or maintenance work, a stop valve

must be provided near the pump. The stop valvemust not be used for adjustment and must becompletely open during operation.

4.5.4 Pressure Pipeline

For adjustment, repair and mounting of the pump,a stop valve is to be provided near the pressure

joint.

4.5.5 Addi tional Connections

For the position and dimension of requiredadditional connections as e.g. for rinse, stop andquench liquid, refer to the labels supplied with thepump or to the drawings in the operatinginstructions. The rinse, stop and quench liquidsmust be checked at regular intervals.Connections for ventilation and release of theleakage liquid are also described in the drawings.

4.6 Low-Noise Installation

A reduction in noise can be achieved by isolating

the pedestal (2) from the ground by means of anappropriate insulation board (3) and by usingsuitable bellow expansion joints (4) between thepiping (5) and the pump (1) (fig. 4.6a). Thepedestal (2) must not be secured to the ground orto the walls.

Fig. 4.6a Low-Noise Installation

Another possibility to reduce the noise is the useof oscillation absorbers. In this case, you need toinstall a frame under the base of the pump.

Bellow expansion joints must be checkedregularly for brittle and cracks.

5 Starting Operation / StoppingOperation

5.1 Preparations for Initial

Prior to the start, the pump and the suctionpipeline must be drained of air and be completelyfilled with the pumped liquid. The stop valve in thesuction or inlet pipeline must be completely open,if there is one. For self-priming pumps, the pumpmust only be completely drained of air and filledwith the pumped liquid.

A pump / pipe line that is not de-aerated leads to the destruction /damage of the mechanical seal.

Conveyed material may be discharged.

Before commissioning, it must be ensured that thepump and pipe lines have been connected /assembled in accordance with the guidelines andin a fixed manner. The pump may only beoperated provided that protective equipment(coupling protection / fan guard) is in place. Thepump must be operated with contact protectionwhen dealing with hot conveyed material.

Do not block the motor fan withforeign articles. Blockage will lead

to the ejection of foreign articles and overheating /breakdown of the motor.

5.2 Initial Starting

The pump must not be started until the outlet stopvalve is closed so as to avoid overload of themotor. Immediately after reaching the operationalspeed, slowly open the stop valve of the pressurepipeline and adjust the operating point.Until the liquid starts moving against atmosphericpressure, the hydrostatic pressure for self-primingpumps must not exceed 1 bar with reference tothe difference in height between suction and

outlet liquid level and to the density of the pumpedliquid.

The pump must never be operatedfor a longer period if the outlet stopvalve is closed. The pump unit will bedamaged if the pumped liquid

exceeds the permitted temperature.

CAUTION

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5.3 Restarting

Do not restart the pump until the pump shaftstands still.

Backflow of liquid must not resultin a change of direction of rotationof the pump. If this is the case,

mechanical seals dependent on direction ofrotation may be damaged.

Before re-starting the pump, itmust be ensured that the pumphas not incurred any damage

during the downtime and that all safety andprotective equipment is affixed.

5.4 Stopping OperationClose stop valve of the pressure pipeline. If thereis a backflow stop and sufficient counter pressurein the pipeline, the stop valve can remain open.Switch off the motor and observe that it slowsdown smoothly. Close stop valve of the pressurepipeline.If the pumped liquid reaches temperatures belowzero and/or if longer periods of standstill occur,the pump must be drained completely and bepreserved (see section 2.2.1).

6 Service/Maintenance

6.1 Supervision of Operation

The pump is to be secured againstbeing unintentionally switched on

during maintenance and cleaning work. Work mayonly be carried out provided that the system /pump is in a pressure-free condition.

Maintenance and cleaning work may only becarried out by expert staff members. The expertstaff members must be provided with personal

protective equipment.Ensure that the pump is cleaned and maintainedat regular intervals in order to be able to ensure atrouble-free operation.

Conveyed material that poses ahazard to health can place a

persons health at risk. The operator is to equipthe system with collection equipment or otherappropriate protective measures.Personal protective equipment such as glovesand protective goggles must always be worn.

Ensure that the pump runs free of vibration andsmoothly. Ensure that the pump runs in a quietand vibration-free manner. Inspect the pump forloose connections at regular intervals (an interval

of 4 months is recommended). Regularly removedeposits of dust as well as contaminations.

Physical injury can occur whencarrying out maintenance and

cleaning work on the pump.Safety regulations and the generally

recognised engineering regulations are to beobserved.

The pump must by no means be operated withoutliquid.There is only a minimal or invisible loss of leakage(steam) if the mechanical seals function correctly.Do not operate the pump for a longer period witha closed stop valve.The maximum permitted environmentaltemperature is 40oC. The storing temperature

measured at the motor or pump casing mayexceed the environmental temperature by 50oC. Itmust not exceed 90oC. Only operate the pump ata higher temperature with the manufacturer'sapproval.

We have to point out that an increased wear mayoccur in case of transport of abrasive / corrosivemedia.

In case of corrosive / abrasive media to bepumped pressurized components have to bechecked regularly in order to detect wear in time -

before a damage occurs. The intervals have tocomply with the liquids to be pumped and initiallyhave to be carried out more frequently, untilperceptions about the progress of wear areattained.

Installed pumps must be powered on and offbriefly once a week in order to guarantee that theyare ready for operation.

Insufficient rotary motion of the motorshaft will lead to the impellerbecoming stuck and the mechanical

seal breaking down. This can lead thedischarge of the conveyed material.

6.1.1 Shaft Bearing

Under normal operation conditions, replace themotor bearings after 20.000 hours of operation orat the latest after 2,5 years. In the case of badoperation conditions, as e.g. a high environmentaltemperature or a corrosive and dustyenvironment, the motor bearings must be checkedat an earlier date and, if necessary, be replaced.

Faulty / worn bearings lead to subsequentdamage and can result in increased noiseemission

CAUTION

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6.1.2 Mechanical Seal

The mechanical seals are maintenance-free. Ifleakages occur after a longer period of operation,replace the complete seal.

When dealing with conveyedmaterials that pose a hazard to

health and to the environment, the operator is toequip the system with collection equipment orother appropriate protective measures. Personalprotective equipment such as gloves andprotective goggles must always be worn.

6.2 Maintenance

6.2.1 Preparation

In order to make sure that the pumpcannot be started, separate the powercable from the motor. Secure the unitagainst accidental switch-on.

The stop valves located in the pressure andsuction line are to be closed and secured againstunauthorised opening. The pump casing musthave reached the environmental temperature andbe drained of liquid and pressure. In the case ofpumps in unit-construction with mounting flange,the container must be drained completely.

Leaking conveyed material can injurehands and arms. Ensure that thepump housing is in a pressure-freecondition. Only then may the pump be

emptied.

When dealing with pumps that havebeen used to convey materials thatpose a hazard to health / to theenvironment, ensure that no danger

to persons and the environment can occur whenemptying the pump. Wear appropriate protectiveclothing and, if required, protective mask.

The rinsing liquid used and the remaining liquidlocated in the pump must be professionallycollected and disposed of without posing anyhazards to persons or to the environment.

6.2.2 Dismounting

By no means use force while dismounting thepump.

Pumps that are used to convey

material that is hazardous to healthand to the environment must bedecontaminated. When releasing the

material, ensure that no danger to persons andthe environment can occur when emptying the

pump. Legal requirements are to be observed andadhered to.

The pump must always be securedagainst tipping over. There is a risk of

tipping over when loosening the pumpfrom the outside of the pipe linenetwork. Persons can be seriously injured if thepump tips over.During the transport phase, ensure that the pumpis secured using appropriate slinging equipment.The pump is only to be positioned on a surfacethat is sufficiently solid and is level in alldirections.The pump may only be dismantled when in apressure-free, empty, de-contaminated (ifrequired) and secured condition. Protectiveclothing and protective mask must be worn if

required.

It is possible that the pump casing (100) remainsin the pipe system. For this the nuts (920) fromtypes NUB../FUB.. resp. The hexagon screws(901) from types CB.. have to be screwed and themotor with the other pumps part has to be pulledoff from the casing cover. For motors with a baseor pumps with mounting flange, the mountingscrews must also be loosened.Torque-flow impellers and closed impellers arefixed at the shaft in axial direction by means of ahexagon screw.

For fixed parts of the casings, impellers andcouplings, use appropriate dismounting facilities.Impellers, which cannot easily be removed fromthe shaft, can be pushed back from the shaft bymeans of two hexagon screws.

6.2.2.1 Pump

For further dismounting of the pump note thedrawings on pages 11 to 17 (only pump typesNUB.. and FUB..) or the separate insert. Mark theposition and sequence of the pump parts for later

mounting.

6.2.2.2 Dismounting of MechanicalSeal

When replacing the mechanical seal, the pumpmust be dismounted.

After removal of the impeller (230), of a sealingchamber (177), if there is one, and of the shaftcirclip (932) or the shaft sleeve for mechanicalseal (516) for pumps with closed impellers, thecomplete mechanical seal is to be removed from

the shaft with its cover (160) and/or mountingcover (166).

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6.2.2.3 Motor

To dismount the motor, the pump must normallybe completely dismounted.For pumps with coupling, it is not necessary to

dismount the pump. The complete pump canremain in the piping. First of all, remove thecoupling protection (681) and loosen the hexagonscrews (901.4) of the coupling. After havingloosened the hexagon screws (901.1), remove themotor from the pump.

6.2.3 Mounting

6.2.3.1 General Remarks

Prior to mounting, all parts must be cleanedthoroughly. Remove remaining parts of the seals.Slight scratches and grooves on the shaft nearthe shaft seal and on other sealing surfaces of thecasings are to be polished with linen. If this is notpossible, replace the parts. Gaskets must alwaysbe renewed. Check O-rings for damage andreplace them, if necessary.Mounting is effected in the reverse order ofdismounting. Heat up the coupling joints of rigidcouplings to approximately 250C prior tomounting them onto the shaft.The starting torques for the tie bolts and locking

screws non lubricated condition are displayed infig. 6.2.3.1a.

Thread M 10 M 12 M 14

torque Nm 30 50 75

Abb. 6.2.3.1a Starting torque

6.2.3.2 Mounting of the Motor

For initial mounting of motor and pumps with rigidcoupling, first of all, remove the transportsafeguards of the lantern (341) or of theintermediate flange (722), then remove the

motorside coupling half (844).Subsequently, put this part onto the motor shaft.This coupling half must be next to the motor shaftcollar. Tighten screws (904.1), join motor andpump centrically without tilting them. Tightenscrews (901.1) between motor and lantern (341)or intermediate flange (722) and then couplingscrews (901.4).

The inner parts of the pump will be damaged ifmotor and pump are connectedand the motorside or pumpsidecoupling half has been installed

incorrectly or not at all.

6.2.3.3 Mount ing of Mechanical Seal

When mounting the mechanicalseals, you must proceed verycarefully and with precision.

Do not touch the surfaces of the seal. Do notdamage the sealing parts. To facilitate themounting, moisten elastomer with low-surfacetension water.

Mechanical seals and sealing partswith elastomer made of EP rubbermust by no means come in contactwith oil or grease.

The shape of spare mechanical seals may differfrom those of the installed mechanical seal.However, the dimensions of the spare mechanical

seal are the same and for that reason it can bereplaced.

To avoid distortion of the counter-ring, mechanicalseals with double PTFE-wrapped sealing ringsare additionally secured by a leading pin insidethe casing. The pin must be removed whenreplacing the type of mechanical seals and whenusing a type with different O-ring material.

For details of the individual types of mechanicalseals observe the following procedures.

Observe the enclosed,

separatemounting instructions for thosetypes of mechanical seals which

are not listed.

CAUTION

CAUTION

CAUTION


13/21

13

1. Stressed mechanical seal independent ofdirection of rotation with elastomer bellows(fig. 6.2.3.3a)

Fig. 6.2.3.3a

Carefully press angle collar (1) together withcounter ring (2) into the counter ring fit.

Twist the rotating unit (3,4,5) onto the shaftas far as the counter ring. Put on supportingring and mount circlip (932) and/or pushshaft sleeve for mechanical seal (516) ontothe shaft.

2. Stressed mechanical seal dependent ondirection of rotation with conical springs(fig. 6.2.3.3b)

Fig. 6.2.3.3b

Place the O-ring (1) in the counter ring seat

and carefully insert the counter ring (2).Press the rotating unit (3, 4, 5, 6, 7, 8) on tothe shaft whilst rotating.

a) Attach the impeller (230)* (only whendealing with CB..., CBF..., ECD..., SU...pumps) or

b) Assemble the safety ring (932)* / push theslide ring sleeve (516)* onto the shaft.

8 7 16 5 4 3 2


14/21

14

7 Disturbance

To eliminate disturbance, the pump must havereached the environmental temperature and must

be drained of air and pressure.

Pum

pisblocked

Couplingfault

Headstoolow

Rate

sofflowtoolow

Bearingtemperaturetoohigh

Pum

poperatesbadly

Leak

agesatthecasings

Overloadofthedrive

Shaftsealleaksbadly

Moto

rprotectionactivated

Pum

pisbecomingtoohot

The chart shows a list of potential errors and their possible causes. Forerrors which are not listed here or which have other reasons, pleaseconsult us.

Cause Elimination

z zPump and/or suction pipeline is notcompletely drained of air/filled

Drain of air and fill

z z z z

Suction level too high, NPSH value ofthe unit too high

Completely open stop slide in the suctionpipeline, check suction bag/footing valve, ifnecessary, increase liquid level, ifnecessary

z z z

Air inclusion in the pumped liquid toohigh

Seal suction pipeline once again, checksuction bag, increase liquid level, ifnecessary

z z z zFormation of air bag in suction pipeline Change suction pipeline/attach drain valve

z z

Direction of rotation incorrect Check and change phase sequence, if

necessary

z Rates of flow too low Readjust operating point

z z Wear of inner parts Replace inner parts

z z z Pump operates out of tolerance Readjust operating point

z Shaft seal damaged Replace shaft seal

z z Speed too low Increase speed1)

z z Speed too high Reduce speed1)

z Connecting screws, seals Tighten connecting screws, replace seals

zPump/motor not adjusted Replace defective parts, adjust pump/motor

z zProblems via piping Check pipe connections/pump

fasteners/bearing distance of pipe clips

z Defective bearing Replace bearing

z z z z Density/viscosity of pumped liquidhigher than indicated in the order

1)

z Motor protection unit set incorrectly ordefective

Check motor protection unit, replace it, ifnecessary

zImpeller blocked Clean interior parts from particles and

impurities1)

Please consult us

CAUTION


15/21

15

411

433

914

182

177

940

230

932

55

4.1

901.3

100

412

930.3

918

230

516

903

411

903

903

411

905

901

930

930.1

901.1

930.1

9

01.1

920.1

160

554

903

920

partno.

designation

100

casing

160

cover

177

sealingchamber

182

foot

230

impeller

411

jointring

412

o-ring

433

mechanicalseal

507

deflector

516

shaftsleevefor

mechanicalseal

554/.1

washer

901/.1/.3hexagonscre

w

903

screwedplug

905

tiebolt

914

hexagonsockethead

capscrew

918

slottedcountersunkhead

screw

920/.1

nut

930/.1/.3toothlockwasher

932

circlip

940

key

Whenorderingsparep

arts,please

indicateserialno.,

type

no.and

partsno.

byallmeans.

8

Pum

pViewa

ndListofSparePa

rts

8.1

NUB

300-800NUB

32NUBC

300-600

SUB

700

A:ScrewedplugGforventconnectionan

dpressuregaugeconnection

B:ScrewedplugGfordrain

C:ScrewedplugGforpressuregaugeco

nnection

D:ScrewedplugGforventconnection


16/21

16

516

433

903

4

11

901.1

160

400

167

920.1

930.1

411

903

166

930.1

901.1

100

903

411

412

177

940

230

932

918

230

902

920

903

411

554.1

901.3

554

930.3

partno.

designatio

n

100

casing

160

cover

166

mounting

cover

167

mounting

flange

177

sealingch

amber

230

impeller

400

gasket

411

jointring

412

o-ring

433

mechanicalseal

507

deflector

516

shaftsleevefor

mechanicalseal

554/.1

washer

901/.1/.3

hexagons

crew

902

stud

903

screwedp

lug

918

slottedcountersunk

headscre

w

920/.1

nut

930/.1/.3

toothlock

washer

932

circlip

940

key

Whenorderingsparep

arts,please

indicateserialno.,

type

no.and

partsno.

byallmeans.

8.2

NUBF300-800NUBF32NU

BCF300-600





nnection

D:ScrewedplugGforleakagedrain


17/21

17

903

901.1

930.2

930.1

920.2

160

341

901.2

220

940.1

554

920

210

722

904

844.1

177

918

230

516

411

930

182

230

940

433

932

554.1

901.3

100

930.3

905

903

411

903

903

411

412

914

901

5

54.2

901.6

930.1

930.5

914.1

901.1

681

930.4

904.1

844

901.4

901.7

partno.

designation

918

slottedcounte

rsunk

headscrew

920/.2

nut

930/.1-.4toothlockwasher

932

circlip

940/.1

key

Whenorderingspareparts,please

indicateserialno.,

type

no.and

partsno.

byallmeans.

partno.

designation

901/.1-.4hexagonscrew

901/.6/.7hexagonscrew

903

screwedplug

904/.1

hexagonsocket

setscrew

905

tiebolt

914

hexagonsockethe

ad

capscrew

partno.

designation

412

o-ring

433

mechanicalseal

516

sleeveshaftfor

mechanicalseal

554/.1/.2washer

681

couplingguard

722

intermediateflange

844/.1

disctypecoupling

8.3

NUBL300-700

partno.

designation

100

casing

160

cover

177

sealingchamber

182

foot

210

shaft

230

impeller

341

lantern

411

jointring

A:Scre

wedplugGforventconnection

andpressuregaugeconnection

B:Scre

wedplugGfordrain

C:Scre

wedplugGforpressuregauge

connection

D:Scre



18/21

18

411

41

1

903

903

940

412

100

230

177

932

433

411

920.2

901.3

903

411

920

554

681

930.4

844

904.1

901.4

901.7

901.6

940.1

167

930.2

722

210

844.1

904

554.2

901.2

903

166

930.2

341

220

930.1

914.1

930.5

901.1

918

554.1

930.3

230

160

902

516

901.2

400

8.4

NUBFL300-700


19/21

19

partno.

designation

918

slottedcounte

rsunk

head

screw

920/.2

nut


932

circlip

940/.1

key


indicateserialno.,

type

no.and

partsno.

byallmeans.

partno.

designation

722

intermediateflange

844/.1

disctypecoupling



902

stud

903

screwedplug

904/.1

hexagonsocketse

t

screw

partno.

designation

400

gasket

411

jointring

412

o-ring

433

mechanicalseal

516

shaftsleevefor

mechanicalseal

554/.1/.2washer

681

couplingguard

partno

.designation

100

casing

160

cover

166

mountingcover

167

mountingflange

177

sealingchamber

210

shaft

230

impeller

341

lantern

A:Scre



B:Scre

wedplugGfordrain

C:Scre


connection

D:Scre

wedplugGforleakagedrain


20/21

20

554

930

412

903

C 903

411

914

A B903

905

411

100

433

592

182

932

930.1

901.1

160

D

554.1

901

.3

230

940

903

411

901.1

930.1

920

partno.

designation

100

casing

160

cover

230

impeller

411

jointring

412

o-ring

433

mechanicalseal

507

deflector

554/.1

washer

592

underlay

901/.1/.3hexagonscre

w

903

screwedplug

905

tiebolt

914

hexagonsocketset

screw

920

nut

930/.1

toothlockwasher

932

circlip

940

key

Whenorderingsparep

arts,please

indicateserialno.,

type

no.and

partsno.

byallmeans.

8.5

FUB





nnection

D:ScrewedplugGforventconnection


21/21

21

554

341

592

903

C 930

411

914

182

433

940

930.2

901.2

722

412

903

BA

905

41

1

100

932

D

554.1

901.3

230

411

903

160

930.4

930.1

901.2

9

30.2

722.1

901.1

904

930.1

901.4

901.1

844

210

901.1

92

0

930.1

940.1

844

.1

681

904.1

901.7

partno.

designation

914

hexagonsock

ethead

capscrew

920

nut


932

circlip

940/.1

key


indicateserialno.,

type

no.and

partsno.

byallmeans.

partno.

designation



903

screwplug

904/.1

hexagonsocketse

t

screw

905

tiebolt

partno.

designation

412

o-ring

433

mechanicalseal

554/.1

washer

592

underlay

681

couplingguard

722/.1

intermediateflange

844/.1

disctypecoupling

8.6

FUBL

partno.

designation

100

casing

160

cover

182

foot

210

shaft

230

impeller

341

lantern

411

jointring

A:Scre



B:Scre

wedplugGfordrain

C:Scre


connection

D:Scre


Documents

Fuel Transfer Pump