2014 EDITION

Reciprocating metering pump with mechanical diaphragm

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PU

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METERING PUMP WITH SPRING RETURN

SR Series mod. D MECHANICAL

DIAPHRAGM

D 050N D 100N D 101N D 121N

EN

ATTENTION:

Industrial machinery for professional use. These instructions are for qualified personnel

Translation of the original instructions

DOSEURO®

XMPE0TMD100SST014 2014 EDITION 2

TABLE OF CONTENTS

Ref. Title Page

1 PREFACE 3

1.1 General prescriptions 3

2 TECHNICAL DATA 4

2.1 Technical data of pump 4

2.2 Sound vibration emitted by the pump 5

3 OPERATIONS TO BE PERFORMED ON THE HEAD 5

3.1 Periodical check of head 5

3.2 Troubleshooting 6

3.3 Head disassembly and diaphragm replacement 7

3.4 Routine maintenance 8

DOSEURO®

XMPE0TMD100SST014 2014 EDITION 3

PREFACE

General prescriptions

This manual refers to the use and maintenance of the heads (hydraulic part) of the direct diaphragm spring return metering pumps model D 050N/ D 100N/ D 101N/ D 121N. This manual is supplied together with the SR series pumps, model A/ B/ BR / SD / D use and maintenance manual, to be consulted for any further information and which contains the CE declaration of conformity.

1

1.1

DOSEURO®

XMPE0TMD100SST014 2014 EDITION 4

TECHNICAL DATA Below are the tables with the technical data characteristic of each individual pump model.

Technical data of pump

The pressures indicated in the tables must never be exceeded in order to avoid any kind of inconvenience. Should it be necessary to run the pump at a higher pressure, contact our technical department.

The indicated flow rate value is subject to variations in view of the working pressure of the pumped liquid,

the viscosity and the conditions of installation.

The number of strokes per minute is calculated with 4-pole motors (~1400 rpm)

Characteristic data Model D 050N

FREQUENCY Hz 50 60 50 60 50 60 50 60 HEAD VALVE

REDUCTION RATIO I (1/40) F (1/24) C (1/14,5) B (1/12) Metal

bar (kg/cm

2)

Plastic bar

(kg/cm2)

Metal Plastic Att. Ø

STROKES min/1'

35 42 58 70 96 116 116 139 Type Type G.m.

Flo

w r

ate

l/h

D 050N - 30 5 6 8 9.6 14 16.8 17 20.4 14 10 AB 5 AC 5 1/2"

D 050N - 50 14 16.8 24 28.8 39 46.8 49 58.8 10 10 AB 5 AC 5 1/2"

Characteristic data Model D 100N

FREQUENCY Hz 50 60 50 60 50 60 50 60 HEAD VALVE

REDUCTION RATIO

I (1/40) F (1/24) C

(1/14,5) B (1/12) Metal

bar (Kg/cm

2)

Plastic bar

(Kg/cm2)

Metal Plastic Att. Ø

STROKES min/1'

35 42 58 70 96 116 116 139 Type Type G.m.

Flo

w r

ate

l/h

D 100N - 70 53 63.6 88 105.6 146 175 176 211 5 5 AB 8 AC 8 1/2"

D 100N - 90 81 97 135 162 224 268 271 325 3 3 AB 11 AC 11 3/4"

D 100N 105 108 129 180 216 297 356 360 432 1.5 1.5 AB 13 AC 13 3/4"

D 100N 120 132 158 219 262 362 434 438 525 1.5 1.5 AB 17 AC 17 1"

Characteristic data Model D 101N

FREQUENCY Hz 50 60 50 60 50 60 HEAD VALVE

REDUCTION RATIO F (1/20) C (1/14,5) B (1/11.5) Metal bar

(kg/ cm2)

Plastic bar

(kg/cm2)

Metal Plastic Att. Ø

STROKES min/1' 70 84 96 116 120 144 Type Type G.m.

Flo

w r

ate

l/h

D 101N - 70 105 126 144 172.8 180 216 8 8 AB 8 AC 8 1/2"

D 101N - 90 158 189.6 217 260.4 271 325.2 5 5 AB 11 AC 11 3/4"

D 101N - 105 212 254.4 292 350.4 365 438 4 4 AB 13 AC 13 3/4"

D 101N - 120 244 292.8 334 400.8 418 501.6 3 3 AB 17 AC 17 1"

2.1

ATTENTION!

2

DOSEURO®

XMPE0TMD100SST014 2014 EDITION 5

Characteristic data Model D 121N

FREQUENCY Hz 50 60 50 60 50 60 HEAD VALVE

REDUCTION RATIO F (1/20) C (1/14,5) B (1/11.5) Metal bar

(kg/ cm2)

Plastic bar

(kg/cm2)

Metal Plastic Att. Ø

STROKES min/1' 70 84 96 116 120 144 Type Type G.m.

Flow rate l/h

D 121N - 120 332 398.4 455 546 570 684 3 3 AB 22 AC 22 1"

SOUND VIBRATION EMITTED BY THE PUMP Below are the results of the phonometric measurements carried out on the series pumps. These tests were carried out by an external laboratory in compliance with Directives and Standards UNI EN ISO 3744:2009 and Directive ISO 2002/44/EC.

Investigation table of phonometric pressure

Model - D 050N - D 100N Condition of pressurised pump

Maximum sound emission on the surface

Average level of pressure on the surface.

Level of sound power

dB(A) 71.7 dB(A) 67.9 dB(A) 71.4

Model D 101N - D 121N Condition of pressurised pump

Maximum sound emission on the surface

Average level of pressure on the surface.

Level of sound power

dB(A) 76.7 dB(A) 73.2 dB(A) 76.7

OPERATIONS TO BE PERFORMED ON THE HEAD

Periodical check of the head Failures or malfunctions may occur due to negligence leading to extraordinary maintenance: proceeding with a periodical visual check, as described in the SR REDUCER manual, preventive maintenance chapter. It is, at times, possible to avoid the arising of situations that require extraordinary maintenance. In the presence of these anomalies we recommend readily intervening in order to avoid safety problems, a reduced flow rate and reduced efficiency of the pump. Summarising, the checks to be carried out are: Periodical checks of the pumping head must be carried out to

ensure that the pump is safe and operating correctly. Particular attention must be taken if the head installed is made

of plastic as it is more sensitive to temperature variations and settling phenomena.

Check for dosed liquid leaks from the valves and from the diaphragm pinching.

ATTENTION!

2.2

3

3.1

DOSEURO®

XMPE0TMD100SST014 2014 EDITION 6

Troubleshooting This chapter describes some inconveniences that may arise during machine use. We propose some possible interventions: it is good practice to initially attempt to resolve a problem applying the most simple of solutions. Never attempt repairs if unsure of what you are about to do: greater damage may be caused. The indications described in the following table help in the event of troubleshooting.

TROUBLESHOOTING

Inconveniences Causes Solutions

Low delivery pressure Low flow rate

1 - Clogged suction system:

Clean suction filter. Check the suction piping and the feed tank for obstructions or partially closed valves.

2 - Worn safety relief/vent valve seat:

Check the safety relief/vent valve, if the liquid leaks - switch-off the pump and check.

3 - pump not completely primed (air bubble in the

suction pipe):

Excessive suction height, respect NPSHr value, install a suction dampener.

4 – incorrectly connected motor:

Check the motor plate again for the correct wiring sequence. Check the phases.

5 - dirty pump valves: Inspect valve units. Clean or replace the components if necessary.

6 - air entering the head

Verify the presence of inlet air in the suction pipe. Check junctions between pipes, seals around the valve stems, and the connections of the instruments. Check diameter and piping route.

7 - insufficient suction pressure

Increase the suction pressure. Reduce the suction height or increase the liquid level in the feed tank.

8 - Circuitous piping route with the presence of chokes; pipe

inner diameter smaller than the valve passage area;

Check diameter and piping route.

3.2

ATTENTION!

DOSEURO®

XMPE0TMD100SST014 2014 EDITION 7

TROUBLESHOOTING

Inconveniences Causes Solutions

Excessive noise

1 - air entering the head

Verify the presence of inlet air in the suction pipe. Check junctions between pipes, seals around the valve stems, and the connections of the instruments.

2 - foreign material inside valve

Inspect valve units. Clean or replace the components if necessary.

3 - excessive lifting of valves Replace the worn parts.

4 - safety relief valve or other accessories in delivery piping

cause noise

A quick closing of the valve, solenoid valve or cock will produce a water hammer. This pressure wave is transmitted to the pump resulting in noise. A pulsation dampener before the back pressure valve may be requested. A different type of valve may be requested.

The pumped liquid comes out from the hole under the lantern

The diaphragm is broken Replace the diaphragm, assess the components and replace them if damaged.

HEAD DISASSEMBLY AND DIAPHRAGM REPLACEMENT Before intervening on the metering pump or on the piping, the necessary precautions must be taken so that the pumped product, especially if harmful, does not endanger personnel or the surrounding elements. BEFORE INTERVENING PERSONNEL MUST ENSURE THAT: The pump has stopped and has been disconnected from the mains power supply. The pump head and the plant are de-pressurised and drained of any liquid. The pump has reached such a temperature to be able to safely move it. Proceed as follows, using the sections of the pumping heads to identify the components and their order of assembly: Disconnect the piping from the valves. Loosen the screws located on the front of

the pumping head (pos. 14). Remove the head from the pump (pos. 1). Loosen the diaphragm (pos. 20 and the

diaphragm shield (pos. 22), removed the diaphragm, replace if damaged.

Tighten the diaphragm (pos. 20) with the diaphragm shield (pos.22).

Re-assemble the head (pos. 1) paying attention to the direction of the valve container arrows.

Tighten the head screws (pos. 14).

3.3

ATTENTION!

DOSEURO®

XMPE0TMD100SST014 2014 EDITION 8

ROUTINE MAINTENANCE (ref. UNI 11063) The table shows the parts subject to greater wear which therefore require routine maintenance. We recommend verification and replacement, if necessary.

Maintenance period Head Valve unit

Diaphragm Plastic Metal

Half-yearly X X X

In case the pump is used continuously and in particularly harsh conditions, we recommend reducing the verification times.

3.4

DOSEURO®

XMPE0TMD100SST014 2014 EDITION 9

NOTES:

1st Edition - 2014 Revision 0 - 11/04

For a better use of your metering pump, choose:

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Request them to our Sales Department

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