Flowserve ME User Manual

USER INSTRUCTIONS

ME centrifugal pump

Single-stage, axial suction, tangential vertical discharge type
centrifugal pump

PCN=71576287 – 02/13 (E) Original instructions.

Installation

Operation

Maintenance

These instructions must be read prior to installing,

operating, using and maintaining this equipment.

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

CONTENTS

Page

1 INTRODUCTION AND SAFETY ........................... 4

1.1 G

ENERAL

1.2 CE

1.3 D

ISCLAIMER

1.4 C

OPYRIGHT

1.5 D

UTY CONDITIONS

1.6 S

AFETY

1.7 N

AMEPLATE AND SAFETY LABELS

1.8 S

PECIFIC MACHINE PERFORMANCE

1.9 N

OISE LEVEL

2 TRANSPORT AND STORAGE ........................... 11

2.1 C

ONSIGNMENT RECEIPT AND UNPACKING

2.2 H

ANDLING

2.3 L

IFTING

2.4 S

TORAGE

2.5 R

ECYCLING AND END OF PRODUCT LIFE

3 PUMP DESCRIPTION ......................................... 12

3.1 C

ONFIGURATIONS

3.2 N

OMENCLATURE

4 INSTALLATION .................................................... 15

.............................................................. 4

MARKING AND APPROVALS

............................... 4

.......................................................... 4

.......................................................... 4

................................................. 4

................................................................ 5

........................... 8

......................... 8

......................................................... 9

.............. 11

........................................................... 11

............................................................... 12

........................................................... 12

................ 12

............................................... 12

................................................. 14

Page

6 MAINTENANCE .................................................. 26

6.1 G

ENERAL

6.2 M

AINTENANCE SCHEDULE

6.3 S

PARE PARTS

6.4 R

ECOMMENDED SPARES AND CONSUMABLE ITEMS

6.5 D

ISASSEMBLY

7 FAULTS; CAUSES AND REMEDIES ................. 31

8 PARTS LIST AND DRAWINGS .......................... 32

8.1 S

ECTIONAL DRAWINGS

8.2 S

ECTIONAL DRAWINGS PART LIST

8.3 G

ENERAL ARRANGEMENT DRAWING

9 CERTIFICATION ................................................ 35

10 OTHER RELEVANT DOCUMENTATION AND

MANUALS .............................................................. 35

10.1 S

10.2 C

10.3 A

........................................................... 26

................................... 26

..................................................... 29

..................................................... 30

........................................ 32

........................ 35

..................... 35

UPPLEMENTARY USER INSTRUCTIONS
HANGE NOTES
DDITIONAL SOURCES OF INFORMATION

................................................ 35

29

............. 35

............. 35

4.1 L

OCATION

4.2 F

OUNDATION

4.3 G

ROUTING

4.4 I

NITIAL ALIGNMENT

4.5 P

IPING

4.6 E

LECTRICAL CONNECTIONS

4.8 P

ROTECTION SYSTEMS

........................................................... 15

....................................................... 16

.......................................................... 16

............................................... 17

................................................................ 18

.................................. 20

........................................ 21

5 COMMISSIONING, START-UP, OPERATION AND

SHUTDOWN .......................................................... 21

5.1 D

IRECTION OF ROTATION

..................................... 21

5.2 Guarding 21

5.3 P

RIMING AND AUXILIARY SUPPLIES

5.4 S

TARTING THE PUMP

5.6 S

TOPPING AND SHUTDOWN

5.7 H

YDRAULIC, MECHANICAL AND ELECTRICAL DUTY

5.8 P

UMPS FOR FOOD USE OR POTABLE WATER

............................................ 22

........................ 21

.................................. 24

.. 25

........ 25

Page 2 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

INDEX

Page

Additional sources (10.3) ....................................... 35

Alignment of shafting (see 4.2, 4.4 and 4.7)

ATEX marking (1.6.4.2) ........................................... 7

CE marking and approvals (1.2) .............................. 4

Certification (9) ...................................................... 35

Change notes (10.2) .............................................. 35

Cleaning prior to operation (5.8.1) ........................ 25

Commissioning, start-up, operation (5) ................. 21

Compliance, ATEX (1.6.4.1) .................................... 6

Configurations (3.1) ............................................... 12

Copyright (1.4) ......................................................... 4

Coverage charts (3.3) ............................................ 15

Direction of rotation (5.1) ....................................... 21

Disassembly (6.5) .................................................. 30

Discharge piping (4.5.3) ....................................... 20

Disclaimer (1.3) ........................................................ 4

Dismantling (see 6.5, Disassembly) ...................... 30

Drawings (8.1) ....................................................... 32

Duty conditions (1.5) ................................................ 4

Ecodesign (1.8.1) ..................................................... 9

Electrical connections (4.6) ................................... 20

End of product life (2.5) ......................................... 12

Faults; causes and remedies (7) ........................... 31

Final checks (4.5.4) .............................................. 20

First pump start up (5.4.2) .................................... 22

Foundation (4.2) .................................................... 16

Forces and moments (see 4.5.1) ........................... 18

General arrangement drawing (8.3) ...................... 35

Gland packing (6.2.5) ............................................ 28

Grouting (4.3) ......................................................... 16

Guarding (5.2) ........................................................ 21

Handling (2.2) ........................................................ 11

Hydraulic, mechanical and electrical duty (5.7) ..... 25

Inspection (6.2.2 and 6.2.3) ................................... 27

Installation (4) ........................................................ 15

Internal coating (6.2.6) ........................................... 29

Lifting (2.3) ............................................................. 12

Location (4.1) ......................................................... 15

Maintenance (6) ..................................................... 26

Maintenance schedule (6.2) .................................. 26

Mechanical seal (6.2.4) ......................................... 28

Nomenclature (3.2) ................................................ 14

Nameplate (1.7.1) .................................................... 8

Operating limits (see 3.1) ...................................... 12

Ordering spare parts (6.3.1) .................................. 29

Parts lists (8.2) ....................................................... 35

Piping (4.5) ............................................................ 18

Protection systems (4.8) ........................................ 20

Pump masses (2.2.2) ............................................ 11

Receipt and unpacking (2.1) .................................. 11

Recommended fill quantities (see 6.2.1) ............... 27

Recommended grease lubricants (see 6.2.1) ....... 27

Recommended spares (6.4) .................................. 29

Recycling (2.5) ....................................................... 12

Replacement parts (see 6.3 and 6.4) .................... 29

Page

Running the pump (5.5) ......................................... 23

Safety action (1.6.3) ................................................. 5

Safety labels (1.7.2) ................................................. 8

Safety markings (1.6.1) ............................................ 5

Safety, protection systems (see 1.6 and 4.8) .......... 5

Sectional drawings (8.1) ........................................ 32

Sound level (see 1.9, Noise level) ........................... 9

Sources, additional information (10.3) ................... 35

Spare parts (6.3) .................................................... 29

Specific machine performance (1.8) ........................ 8

Standard maintenance (6.2.1) .............................. 27

Starting the pump (5.4) .......................................... 22

Stop/start frequency (5.5.6) ................................... 24

Stopping and shutdown (5.6) ................................. 24

Storage, pump (2.4) ............................................... 12

Storage, spare parts (6.3.2) ................................... 29

Suction piping (4.5.2) ............................................ 19

Supplementary manuals or information sources ... 35

Thermal expansion (4.4.1) .................................... 17

Transport and storage (2) ..................................... 11

Trouble-shooting (see 7) ........................................ 31

Vibration (5.5.5) ..................................................... 24

Page 3 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

1 INTRODUCTION AND SAFETY

1.1 General

These instructions must always be kept

close to the product's operating location or
directly with the product.

Flowserve’s products are designed, developed and
manufactured with state-of-the-art technologies in
modern facilities. The unit is produced with great
care and commitment to continuous quality control,
utilizing sophisticated quality techniques, and safety
requirements.

Flowserve is committed to continuous quality
improvement and being at service for any further
information about the product in its installation and
operation or about its support products, repair and
diagnostic services.

These instructions are intended to facilitate
familiarization with the product and its permitted use.
Operating the product in compliance with these
instructions is important to help ensure reliability in
service and avoid risks. The instructions may not
take into account local regulations; ensure such
regulations are observed by all, including those
installing the product. Always coordinate repair
activity with operations personnel, and follow all
plant safety requirements and applicable safety and
health laws and regulations.

These instructions must be read prior to

installing, operating, using and maintaining the
equipment in any region worldwide. The
equipment must not be put into service until all
the conditions relating to safety noted in the
instructions, have been met. Failure to follow
and apply the present user instructions is
considered to be misuse. Personal injury,
product damage, delay or failure caused by
misuse are not covered by the Flowserve
warranty.

1.2 CE marking and approvals

It is a legal requirement that machinery and
equipment put into service within certain regions of
the world shall conform with the applicable CE
Marking Directives covering Machinery and, where
applicable, Low Voltage Equipment, Electromagnetic
Compatibility (EMC), Pressure Equipment Directive
(PED) “minimum efficiency for some water pumps
(Ecodesign)” and Equipment for Potentially
Explosive Atmospheres (ATEX).

Where applicable the Directives and any additional
Approvals cover important safety aspects relating to
machinery and equipment and the satisfactory
provision of technical documents and safety
instructions. Where applicable this document

incorporates information relevant to these Directives
and Approvals.
To confirm the Approvals applying and if the product is
CE marked, check the serial number plate markings
and the Certification. (See section 9, Certification.)

1.3 Disclaimer

Information in these User Instructions is believed
to be reliable. In spite of all the efforts of Flowserve
Corporation to provide sound and all necessary
information the content of this manual may appear
insufficient and is not guaranteed by Flowserve as
to its completeness or accuracy.

Flowserve manufactures products to exacting
International Quality Management System Standards
as certified and audited by external Quality Assurance
organizations. Genuine parts and accessories have
been designed, tested and incorporated into the
products to help ensure their continued product quality
and performance in use. As Flowserve cannot test
parts and accessories sourced from other vendors the
incorrect incorporation of such parts and accessories
may adversely affect the performance and safety
features of the products. The failure to properly select,
install or use authorized Flowserve parts and
accessories is considered to be misuse. Damage or
failure caused by misuse is not covered by the
Flowserve warranty. In addition, any modification of
Flowserve products or removal of original components
may impair the safety of these products in their use.

1.4 Copyright

All rights reserved. No part of these instructions may
be reproduced, stored in a retrieval system or
transmitted in any form or by any means without
prior permission of Flowserve.

1.5 Duty conditions

This product has been selected to meet the
specifications of your purchaser order. The
acknowledgement of these conditions has been sent
separately to the Purchaser. A copy should be kept
with these instructions.

The product must not be operated beyond

the parameters specified for the application. If
there is any doubt as to the suitability of the
product for the application intended, contact
Flowserve for advice, quoting the serial number.

If the conditions of service on your purchase order
are going to be changed (for example liquid
pumped, temperature or duty) it is requested that
the user seeks the written agreement of Flowserve
before start up.

Page 4 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

1.6 Safety

1.6.1 Summary of safety markings

These User Instructions contain specific safety
markings where non-observance of an instruction
would cause hazards. The specific safety markings

1.6.3 Safety action

This is a summary of conditions and actions to
prevent injury to personnel and damage to the
environment and to equipment. For products
used in potentially explosive atmospheres
section 1.6.4 also applies.

are:

NEVER DO MAINTENANCE WORK

WHEN THE UNIT IS CONNECTED TO POWER

This symbol indicates electrical safety
instructions where non-compliance will involve a
high risk to personal safety or the loss of life.

GUARDS MUST NOT BE REMOVED WHILE

THE PUMP IS OPERATIONAL

This symbol indicates safety instructions where
non-compliance would affect personal safety and
could result in loss of life.

This symbol indicates “hazardous substances
and toxic fluid” safety instructions where non­compliance would affect personal safety and could
result in loss of life.

This symbol indicates safety
instructions where non-compliance will involve some
risk to safe operation and personal safety and would
damage the equipment or property.

This symbol indicates explosive atmosphere
zone marking according to ATEX. It is used in safety
instructions where non-compliance in the hazardous
area would cause the risk of an explosion.

This symbol is used in safety instructions to
remind not to rub non-metallic surfaces with a dry
cloth; ensure cloth is damp. It is used where non­compliance in the hazardous area would cause the
risk of an explosion.

This sign is not a safety symbol but indicates

an important instruction in the assembly process.

1.6.2 Personnel qualification and training

All personnel involved in the operation, installation,
inspection and maintenance of the unit must be
qualified to carry out the work involved. If the
personnel in question do not already possess the
necessary knowledge and skill, appropriate training
and instruction must be provided. If required the
operator may commission the manufacturer/supplier
to provide applicable training.

Always coordinate repair activity with operations and
health and safety personnel, and follow all plant
safety requirements and applicable safety and health
laws and regulations.

DRAIN THE PUMP AND ISOLATE
PIPEWORK BEFORE DISMANTLING THE PUMP
The appropriate safety precautions should be taken
where the pumped liquids are hazardous.

FLUORO-ELASTOMERS (When fitted.)
When a pump has experienced temperatures over
250 ºC (482 ºF), partial decomposition of fluoro­elastomers (example: Viton) will occur. In this
condition these are extremely dangerous and skin
contact must be avoided.

HANDLING COMPONENTS
Many precision parts have sharp corners and the
wearing of appropriate safety gloves and equipment
is required when handling these components. To lift
heavy pieces above 25 kg (55 lb) use a crane
appropriate for the mass and in accordance with
current local regulations.

THERMAL SHOCK
Rapid changes in the temperature of the liquid within
the pump can cause thermal shock, which can result
in damage or breakage of components and should
be avoided.

NEVER APPLY HEAT TO REMOVE
IMPELLER
Trapped lubricant or vapor could cause an explosion.

HOT (and cold) PARTS
If hot or freezing components or auxiliary heating
supplies can present a danger to operators and
persons entering the immediate area action must be
taken to avoid accidental contact. If complete
protection is not possible, the machine access must
be limited to maintenance staff only, with clear visual
warnings and indicators to those entering the
immediate area. Note: bearing housings must not be
insulated and drive motors and bearings may be hot.

If the temperature is greater than 68 °C (155 °F)
or below -5 °C (23 °F) in a restricted zone, or
exceeds local regulations, action as above shall
be taken.

Page 5 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

HAZARDOUS LIQUIDS
When the pump is handling hazardous liquids care
must be taken to avoid exposure to the liquid by
appropriate sitting of the pump, limiting personnel
access and by operator training. If the liquid is
flammable and/or explosive, strict safety procedures
must be applied.

Gland packing must not be used when pumping
hazardous liquids.

PREVENT EXCESSIVE EXTERNAL
PIPE LOAD
Do not use pump as a support for piping. Do not
mount expansion joints, unless allowed by
Flowserve in writing, so that their force, due to
internal pressure, acts on the pump flange.

ENSURE CORRECT LUBRICATION
(See section 5, Commissioning, startup, operation
and shutdown.)

START THE PUMP WITH OUTLET
VALVE PART OPENED
(Unless otherwise instructed at a specific point in the
User Instructions.)

This is recommended to minimize the risk of
overloading and damaging the pump motor at full or
zero flow. Pumps may be started with the valve
further open only on installations where this situation
cannot occur. Pump outlet valve shall may need to
be adjusted to comply with the duty following the
run-up process. (See section 5, Commissioning
start-up, operation and shutdown.)

NEVER RUN THE PUMP DRY

INLET VALVES TO BE FULLY OPEN
WHEN PUMP IS RUNNING
Running the pump at zero flow or below the
recommended minimum flow continuously will cause
damage to the seal.

DO NOT RUN THE PUMP AT
ABNORMALLY HIGH OR LOW FLOW RATES
Operating at a flow rate higher than normal or at a
flow rate with no backpressure on the pump may
overload the motor and cause cavitation. Low flow
rates may cause a reduction in pump/bearing life,
overheating of the pump, instability and
cavitation/vibration.

1.6.4 Products used in potentially explosive
atmospheres

The following instructions for pumps and pump
units when installed in potentially explosive
atmospheres must be followed to help ensure
explosion protection.

The terminology and procedures ensure that the
installed pump is in compliance with the European
Directive 94/9/EC, known as the ATEX Directive,
which is mandatory in Europe and may also be
specified in other countries. Where applicable, both
electrical and non-electrical equipment must meet the
requirements 94/9/EC.

Even if the installation is in a region where ATEX is not
the applicable regulation, the general measures
described shall be followed to ensure safe operation.

The measures are explained under the headings of:

• Avoiding excessive surface temperature

• Preventing build up of explosive mixtures

• Preventing the generation of sparks

• Preventing leakages

• Maintaining the pump to avoid hazard

1.6.4.1 Scope of compliance

Use equipment only in the zone for which it is
appropriate. Always check that the driver, drive
coupling assembly, seal and pump equipment are
suitably rated and/or certified for the classification of
the specific atmosphere in which they are to be
installed.

Where Flowserve has supplied only the bare shaft
pump, the Ex rating applies only to the pump. The
party responsible for assembling the pump set shall
select the coupling, driver and any additional
equipment, with the necessary CE Declaration of
Conformity establishing it is suitable for the area in
which it is to be installed.

The output from a variable frequency drive (VFD) can
cause additional heating affects in the motor and so, for
pumps sets with a VFD, the ATEX Certification for the
motor must state that it is covers the situation where
electrical supply is from the VFD. This particular
requirement still applies even if the VFD is in a safe
area.

Page 6 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

1.6.4.2 Marking

An example of ATEX equipment marking is shown
below. The actual classification of the pump will be
engraved on the nameplate.

II 2 GD c IIC 135 ºC (T4)

Equipment Group
I = Mining
II = Non-mining

Category
2 or M2 = High level protection
3 = normal level of protection

Gas and/or Dust
G = Gas; D= Dust

c = Constructional safety
(in accordance with EN 13463-5)

Gas Group (Equipment Category 2 only)
IIA – Propane (typical)
IIB – Ethylene (typical)
IIC – Hydrogen (typical)

Maximum surface temperature (Temperature Class)
(see section 1.6.4.3)

1.6.4.3 Avoiding excessive surface temperatures

ENSURE THE EQUIPMENT TEMPERATURE

CLASS IS SUITABLE FOR THE HAZARD ZONE
Pumps have a temperature class as stated in the

ATEX Ex rating on the nameplate. These are based
on a maximum ambient of 40 °C (104 °F); refer to
Flowserve for higher ambient temperatures.

The surface temperature on the pump is influenced
by the temperature of the liquid handled. The
maximum permissible liquid temperature depends
on the temperature class and must not exceed the
values in the table that follows.

The temperature rise at the seals, bearings and due
to the minimum permitted flow rate is taken into
account in the temperatures stated.

Temperature limit of liquid

handled (* depending on

material and construction

variant - check which is

lower)

Consult Flowserve
Consult Flowserve

115 °C (239 °F) *
180 °C (356 °F) *
275 °C (527 °F) *
400 °C (752 °F) *

Temperature

class to

EN 13463-1

T6
T5
T4
T3
T2
T1

Maximum

surface

temperature

permitted

85 °C (185 °F)
100 °C (212 °F)
135 °C (275 °F)
200 °C (392 °F)
300 °C (572 °F)
450 °C (842 °F)

The responsibility for compliance with the
specified maximum liquid temperature is with the
plant operator.

Temperature classification “Tx” is used when the
liquid temperature varies and the pump could be
installed in different hazardous atmospheres. In this
case the user is responsible for ensuring that the
pump surface temperature does not exceed that
permitted in the particular hazardous atmosphere.

If an explosive atmosphere exists during the
installation, do not attempt to check the direction of
rotation by starting the pump unfilled. Even a short
run time may give a high temperature resulting from
contact between rotating and stationary
components. Furthermore, confinement of liquid in
the pump and pipes must be avoided (valve closed).
If the liquid heats up this may cause excessive
pressure and lead to bursting of pump components.

Where there is any risk of the pump being run against
a closed valve generating high liquid and casing
external surface temperatures it is recommended that
users fit an external surface temperature protection
device.

Avoid mechanical, hydraulic or electrical overload by
using motor overload trips, temperature monitor or a
power monitor and make routine vibration
monitoring checks.

In dirty or dusty environments, regular checks must
be made and dirt removed from areas around close
clearances, bearing housings and motors.

1.6.4.4 Preventing the build up of explosive
mixtures

ENSURE PUMP IS PROPERLY FILLED AND

VENTED AND DOES NOT RUN DRY.
Ensure pump and relevant suction and discharge

pipeline system is totally filled with liquid at all times
during the pump operation, so that an explosive
atmosphere is prevented. In addition it is essential to
make sure that seal chambers, auxiliary shaft seal
systems and any heating and cooling systems are
properly filled.

If the operation of the system cannot avoid this
condition the fitting of an appropriate dry run
protection device is recommended (eg liquid
detection or power monitor).

To avoid potential hazards from fugitive emissions of
vapor or gas to atmosphere the surrounding area
must be well ventilated.

Page 7 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

1.6.4.5 Preventing sparks

To prevent a potential hazard from mechanical
contact, the coupling guard must be non-sparking.
To avoid the potential hazard from random induced
current generating a spark the ground contact on the
baseplate must be used.

Avoid electrostatic charge: do not rub non­metallic surfaces with a dry cloth, ensure cloth is
damp.
Where applicable the coupling must be selected to
comply with 94/9/EC and correct alignment must be
maintained.

Additional requirements for metallic pumps on
non-metallic baseplates.

When metallic components are fitted on a non­metallic baseplate they must be individually earthed
(grounded).

1.6.4.6 Preventing leakage

To avoid potential explosion hazards during
maintenance, the tools, cleaning and painting
materials used must not give rise to sparking or
adversely affect the ambient conditions.

Where there is a risk from such tools or materials;
maintenance must be conducted in a safe area.
It is recommended that a maintenance plan and
schedule is adopted. (See section 6, Maintenance.)

1.7 Nameplate and safety labels

1.7.1 Nameplate

For details of nameplate, see the Declaration of
Conformity, or separate documentation included

with these User Instructions.

1.7.2 Safety labels

The pump must only be used to handle liquids
for which it has been approved to have the correct
corrosion resistance.

Avoid entrapment of liquid in the pump and associated
piping due to closing of suction and discharge valves,
which could cause dangerous excessive pressures to
occur if there is heat input to the liquid. This can occur
if the pump is stationary or running.

Bursting of liquid containing parts due to freezing
must be avoided by draining or protecting the pump
and ancillary systems.

Where there is the potential hazard of a loss of a
seal barrier fluid or external flush, the fluid must be
monitored.

If leakage of liquid to atmosphere can result in a
hazard, the installation of a liquid detection device is
recommended.

1.6.4.7 Maintenance to avoid the hazard

CORRECT MAINTENANCE IS REQUIRED
TO AVOID POTENTIAL HAZARDS WHICH GIVE A
RISK OF EXPLOSION

The responsibility for compliance with
maintenance instructions is with the plant
operator.

Oil lubricated units only:

1.8 Specific machine performance

For performance parameters see section 1.5, Duty
conditions. When the contract requirement specifies

these to be incorporated into User Instructions these
are included here. Where performance data has
been supplied separately to the purchaser these
should be obtained and retained with these User
Instructions if required.

Page 8 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

1.8.1 Ecodesign

EU Regulation 547/2012 of the Directive
2009/125/EC, for the minimum efficiency of defined
classes of water pumps, requires that products must
show their Minimum Efficiency Index (MEI) value.
The EU Benchmark MEI ≥ 0.70.
Also product information must be available to users.
Performance curves will have been provided with
the quotation or order or are available at
flowserve.com.
The efficiency of a pump with trimmed impeller is
usually lower than that of a pump with the full
impeller diameter. The trimming of the impeller will
adapt the pump to a fixed duty point, leading to
reduced energy consumption. The minimum
efficiency index (MEI) is based on the full impeller
diameter.
The operation of this water pump with variable duty
points may be more efficient and economic when
controlled, for example, by the use of a variable
speed drive that matches the pump duty to the
system.
Information on benchmark efficiency is available at
www.europump.org/efficiencycharts.

1.9 Noise level

Attention must be given to the exposure of
personnel to the noise, and local legislation will
define when guidance to personnel on noise
limitation is required, and when noise exposure
reduction is mandatory. This is typically 80 to 85
dBA.

The usual approach is to control the exposure time
to the noise or to enclose the machine to reduce
emitted sound.

You may have already specified a limiting noise
level when the equipment was ordered, however if
no noise requirements were defined, then attention
is drawn to the following table to give an indication of
equipment noise level so that you can take the
appropriate action in your plant.

Pump noise level is dependent on a number of
operational factors, flow rate, pipework design and
acoustic characteristics of the building, and so the
values given are subject to a 3 dBA tolerance and
cannot be guaranteed.

Similarly the motor noise assumed in the “pump and
motor” noise is that typically expected from standard
and high efficiency motors when on load directly
driving the pump. Note that a motor driven by an
inverter may show an increased noise at some
speeds.

If a pump unit only has been purchased for fitting
with your own driver then the “pump only” noise
levels in the table should be combined with the level
for the driver obtained from the supplier. Consult
Flowserve or a noise specialist if assistance is
required in combining the values.

It is recommended that where exposure approaches
the prescribed limit, then site noise measurements
should be made.

The values are in sound pressure level LpA at 1 m
(3.3 ft) from the machine, for “free field conditions
over a reflecting plane”.

For estimating sound power level LWA (re 1 pW)
then add 17 dBA to the sound pressure value.

Page 9 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

Motor size
and speed

kW (hp)

< 0.55 (< 0.75) 72 72 64 65 62 64 62 64

0.75 (1) 72 72 64 66 62 64 62 64

1.1 (1.5) 74 74 66 67 64 64 62 63

1.5 (2) 74 74 66 71 64 64 62 63

2.2 (3) 75 76 68 72 65 66 63 64
3 (4) 75 76 70 73 65 66 63 64
4 (5) 75 76 71 73 65 66 63 64

5.5 (7.5) 76 77 72 75 66 67 64 65

7.5 (10) 76 77 72 75 66 67 64 65
11 (15) 80 81 76 78 70 71 68 69
15 (20) 80 81 76 78 70 71 68 69

18.5 (25) 81 81 77 78 71 71 69 71
22 (30) 81 81 77 79 71 71 69 71
30 (40) 83 83 79 81 73 73 71 73
37 (50) 83 83 79 81 73 73 71 73
45 (60) 86 86 82 84 76 76 74 76
55 (75) 86 86 82 84 76 76 74 76

75 (100) 87 87 83 85 77 77 75 77

90 (120) 87 88 83 85 77 78 75 78
110 (150) 89 90 85 87 79 80 77 80
150 (200) 89 90 85 87 79 80 77 80
200 (270)
300 (400) 87 90 85 86

1 The noise level of machines in this range will most likely be of values which require noise exposure control, but typical values are
inappropriate.

Note: for 1 180 and 960 r/min reduce 1 450 r/min values by 2 dBA. For 880 and 720 r/min reduce 1 450 r/min values by 3 dBA.

3 550 r/min 2 900 r/min 1 750 r/min 1 450 r/min

Pump

only

1 1 1 1

Pump and

Typical sound pressure level LpA at 1 m reference 20 µPa, dBA

motor

Pump

only

Pump and

motor

Pump

only

85 87 83 85

Pump and

motor

Pump

only

Pump and

motor

Page 10 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

In areas where the staff has to intervene, remember
that when the level of the sound pressure is:

• below 70 dBA: it is not necessary to take special
precautions.

• above 70 dBA: people working continuously in
the machine room must be supplied with
protective devices against noise.

• below 85 dBA: no particular measures need to
be taken for casual visitors staying in the room
during a limited period.

• above 85 dBA: the room must be considered as
a dangerous area because of the noise and a
warning sign must be fixed at each entry
warning the people coming into the room, even
for a short period, that they must wear hearing
protection.

• above 105 dBA: special hearing protection
adapted to this noise level and to the spectral
noise components must be installed and a
warning sign to this effect erected at each entry.
The staff in the room must wear ear protection.

Make sure that the noise, which travels through the
walls and windows, does not generate too high
noise levels in the machine room's surroundings.

2 TRANSPORT AND STORAGE

2.1 Consignment receipt and unpacking

Immediately after receipt of the equipment it must be
checked against the delivery and shipping
documents for its completeness and that there has
been no damage in transportation.

Any shortage and or damage must be reported
immediately to Flowserve and received in writing
within one month of receipt of the equipment. Later
claims cannot be accepted.

Check any crate, boxes and wrappings for any
accessories or spare parts that may be packed
separately with the equipment or attached to
sidewalls of the box or equipment.

Each product has a unique serial number. Check
that this number corresponds with that advised and
always quote this number in correspondence as well
as when ordering spare parts or further accessories.

2.2 Handling

2.2.1 General instructions concerning handling

Boxes, crates, pallets or cartons may be unloaded
using forklift vehicles or slings dependent on their
size and construction. See 2.3.1 for positioning of
slings.

To lift heavy pieces above 25 kg (55 lb), use a winch
adapted to the mass and in accordance with the
current local regulations.

To lift machines or pieces with one or several
suspension rings, only use hooks and chains in
compliance with the local regulations concerning
safety. Never put cables, chains or ropes directly on
or in the suspension rings. Cables, chains or lifting
ropes must never present excessive bending.

Never bend the lifting hooks, suspension rings,
chains, etc., which should only be made to endure
stresses within, calculated limits. Remember that the
capacity of a lifting device decreases when the
direction of the lifting force direction makes an angle
with the device axis.

To increase the safety and the efficiency of the lifting
device, all the lifting elements must be as
perpendicular as possible. If necessary a lifting
beam can be placed between the winch and the
load.

When heavy pieces are lifted up, never stay or work
under the load or in the area, which could be in the
path of the load if it were to swing or fall away.
Never leave a load hanging from a winch. The
acceleration or the slowing-down of lifting equipment
must stay in the safety limits for the staff.

A winch must be positioned in such a way that the
load will be raised perpendicularly. Where possible
necessary precautions must be taken to avoid the
swing of the load, using for example two winches
making approximately the same angle, below 30°,
with the vertical.

2.2.2 Pump masses

PUMP TYPE

ME 150 - 200 130
ME 150 - 500 475
ME 200 - 250 175
ME 200 - 315 260
ME 200 - 355 265
ME 200 - 400 370
ME 200 - 500 420
ME 250 - 250 290
ME 250 - 315 330
ME 250 - 355 370
ME 250- -400 415
ME 250 - 500 500
ME 300 - 300 370
ME 300 - 400 480
ME 300 - 450 550
ME 300 - 500 710
ME 350 - 350 700
ME 400 - 500 1100
ME 400 - 650 1250
ME 500 - 500 1450

PUMP MASS

kg lb

287

1047

386
573
584
816
926
639
728
816
915

1102

816
1058
1213
1565
1543
2425
2756
3197

Page 11 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

All motors (for masses see the motor

description plate) must be handled with a winch.

For masses above 25 kg (55 lb), manual

handling is forbidden.

2.3 Lifting

2.3.1 Slinging of motor pumps units

Use handling means in accordance with motor
pump unit mass mentioned on the CE plate. For the
masses of the pumps bare end of shaft see table §

2.2.2 and nameplate.

To avoid distortion, the pump unit

should be lifted as shown.

A crane must be used for all pump sets in
excess of 25kg (55 Ib). Fully trained personnel must
carry out lifting, in accordance with local regulations.

Motor pump unit

2.4 Storage

Store the pump in a clean, dry
location away from vibration. Leave piping
connection covers in place to keep dirt and other
foreign material out of pump casing.

Turn pump at intervals to prevent brinelling of the
bearings and the seal faces, if fitted, from sticking.

Do not store pumps starting on the fan guard.
The pump may be stored as above for up to 6

months. Consult Flowserve for preservative actions
when a longer storage period is needed.

2.5 Recycling and end of product life

At the end of the service life of the product or its
parts, the relevant materials and parts should be
recycled or disposed of using an environmentally
acceptable method and local regulations.
If the product contains substances which are
harmful to the environment, these should be
removed and disposed of in accordance with current
regulations. This also includes the liquids and or
gases in the "seal system" or other utilities.

Bareshaft pump

Make sure that hazardous substances or toxic
fluid are disposed of safely and that the correct
personal protective equipment is used. The safety
specifications must be in accordance with the
current regulations at all times.

3 PUMP DESCRIPTION

3.1 Configurations

The centrifugal motor pump unit is designed for the
pumping of cold water or all clear liquids which are
not solid and liquid mixtures, corrosive, abrasive or
explosive when in contact with the pump motor unit
and its working parts (Important: for other liquids
consult Flowserve for preliminary advice).

The ME type pump is a single-stage pump with axial
suction, support under pump casing (Standard NF
EN 733) and tangential vertical discharge.

When handling always wear gloves, safety

boots and an industrial safety helmet.

For masses above 25 kg (55 lb), manual

handling is forbidden.

Page 12 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

The pumps of this range allow to the removal of the
pump rotor whilst leaving the pump casing
connected to the suction and discharge pipework.

The pump must be stored in a non-explosive,
ventilated location, sheltered from bad weather, dust
and vibrations.

The reliability of the delivered machine can only be
ensured if it is used according to the conditions
given in this manual.

• Maximum working pressure at discharge

Impeller

200

250

300

315

350

355

400

450

500

650

ME (cast iron EN-GJL-250) - PN 10 ME (cast iron EN-GJS-400-15) - PN 16 - PN 10

∅∅∅∅

DN 150 DN 200 DN 250 DN 300 DN 350 DN 400 DN 500 DN 150 DN 200 DN 250 DN 300 DN 350 DN 400 DN 500

4

(58)

16

(232)

4

(58) 4 (58)

8

(116) 8 (116)

8

(116) 8 (116)

8

(116) 8 (116) 8 (116)

10

(145)

10

(145)

Maximum effective pressure at discharge in bar (psi)

4

(58)

8

(116)

10

(145)

4

(58)

6.5

(94) 4 (58)

6.5

(94)

• Maximum working pressure at suction: in the

limit of the maximum working pressure at
discharge for zero flow according to the pump
type

• Maximum pumped fluid temperature

- Gland packing without cooling

................................................≤ 105 °C (221 °F)

- Mechanical seal without cooling

..................... ≤ 80 °C (176 °F) (for ME 55/70)

..................... ≤ 120 °C (248 °F) (for ME 32/42)

The maximum values specified in this manual must
never be exceeded.

6

(87)

6

(87) 6 (87)

12

(174)

(174)
(174)

(217)

(174)

12

(174)

12

(174)

15

(217)

12

12

12

15

6

(87)

12

(174)

12

(174)

15

(217)

6

(87)

10

(145) 6 (87)

10

(145)

• Maximum solid suspension

....................................... 50 g/m3 (0.003 lbm/ft3)

• Density.................................... 1

• Viscosity ................................. 1 mm²/s (31 SSU)

• Frequency .................................................. 50 Hz

• Maximum speed ............ 1450 min

except 990 min

-1

for ME 400-500, ME 400-

-1

for all pumps

650, ME 500-500

Page 13 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

3.2 Nomenclature

Characteristics shown on the nameplate fixed on the pump are as shown below:
Each pump is supplied with the following nameplate:

Speed of rotation

Pump type

Flow rate

Head

Radial/thrust bearing

Year of construction +
Manufacture number

Mass
Maximum admissible

Pressure at 20 °C (68 °F)
Maximum / minimum

temperature

Each pump unit is supplied with the following nameplate:

Mass of the set

EU Regulation 547/2012 requires the statement on a product nameplate:

• MEI ≥ 0.10 [--.-] (Between 1st January 2013 and 1st January 2015)

• MEI ≥ 0.40 [--.-] (From 1st January 2015)

Page 14 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

3.3 Coverage charts

4 INSTALLATION

Equipment operated in hazardous locations
must comply with the relevant explosion protection
regulations. See section 1.6.4, Products used in

potentially explosive atmospheres.

All equipment must be grounded.

4.1 Location

The pump should be located to allow room for
access, ventilation, maintenance and inspection with
ample headroom for lifting and should be as close as
practicable to the supply of liquid to be pumped.

Page 15 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

NF E 27 811

4.2 Foundation

There are many methods of installing
pump units to their foundations. The correct method
depends on the size of the pump unit, its location
and noise vibration limitations. Non-compliance with
the provision of correct foundation and installation
may lead to failure of the pump and, as such, would
be outside the terms of the warranty.

The base plate should be mounted onto a firm
foundation, either an appropriate thickness of quality
concrete or sturdy steel framework. It should NOT
be distorted or pulled down onto the surface of the
foundation, but should be supported to maintain the
original alignment.

Anchor bolts must be in accordance with the foot
bolt holes. Use anchor bolts of accepted standards
and sufficient to ensure a secure fitting in the
foundation. Particularly, this applies to individual
plates where the anchor bolts have to withstand the
driving torque.

c) Lay the base plate and level in both directions

with extra shims. The base plate should be level
to within 0.5 mm per 1 m (0.02 in. per 3.3 ft).

d) If anchor bolts have been pre-cast in the

foundation slightly tighten the anchor bolts.
Otherwise let them hang in the foundation holes.

4.3 Grouting

4.3.1 Base plate grouting

a) Prepare the site for grouting. Before grouting

clean the foundation surface thoroughly and
provide external barriers as shown:

Provide sufficient space in the foundation to
accommodate the anchor bolts. If necessary,
provide concrete risers.

Usually the pump and its drive are mounted on a
common base plate. If not, individual base plates
underneath each machine foot shall be installed.
Base plates are to be fully grouted.

4.2.1 Setting the base plate for anchoring

a) Clean the foundation surface thoroughly.
b) Put shims on the foundation surface [approx 20-

25 mm (0.79-0.98 in.) thick], one on each side of
the bolt hole (as an alternative, leveling screws
can be used).

b) Prepare grouting product (concrete, resin) in

accordance with manufacturers' instructions.

c) Use grouting products with anti-shrinking

components.

d) To grout up to the required level. Polish

surfaces. Take necessary precautions to avoid
air bubbles.

e) Lay-down the barrier, break external angles, and

polish the different surfaces.

Page 16 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

f) After grout starts to cure, definitively tighten

anchor bolts.

g) Control the alignment such as described as

follows.

4.4 Initial alignment

Before connecting the couplings
verify the motor rotation direction.

4.4.1 Thermal expansion

The pump and motor will normally
have to be aligned at ambient temperature and
should be corrected to allow for thermal expansion
at operating temperature. In pump installations
involving high liquid temperatures, the unit should be
run at the actual operating temperature, shut down
and the alignment checked immediately.

4.4.2 Alignment methods

Ensure pump and driver are isolated
electrically and the half couplings are disconnected.
Ensure that the pump pipework, suction and
discharge, is disconnected.

The alignment MUST be checked.

Although the pump will have been aligned at the
factory it is most likely that this alignment will have
been disturbed during transportation or handling. If
necessary, align the motor to the pump, not the
pump to the motor.

Alignment
Parallelism and concentricity check:

Check the alignment at three or four

points, before piping assembly.

Admissible margin for a motor with roller bearings
with European couplings:

= 0.15 mm parallel checking
= 0.1 mm angular checking

For US supplied couplings values to be used are:
= 0.02 in. parallel checking

= 0.05 in. angular checking
Check the couplings manual for further details.

Angular checking:

with a sliding rule

The alignment will be definitive only

after pipe connection (see § 4.5.1).
If necessary, improve the machine alignment:

→

Complete unit mounted on common base plate:

The machines are first aligned accurately in our
workshops. Usually, any misalignment observed on
site is due to a wrong adjustment under the base
plate (disturbed during transport or because of
forces exerted by the piping). It is only necessary to
rectify the adjustment under base plate. If it proves
to be insufficient, modify the motor and the piping.

→

Pump and motor mounted on individual base

plates:

Machines are (or must be) first mounted on their
own base plate in the workshop. Once the pump is
set, it will be regarded as the fixed piece. Any
alignment necessary shall be carried out on the
motor.

with a caliper gauge

Never connect the electric motor

before the setting has been completely finished.

with a rule with a comparator

Page 17 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

4.5 Piping

The user must verify that the equipment is

isolated from any external sources of vibration.

Protective covers are fitted to the
pipe connections to prevent foreign bodies entering
during transportation and installation. Ensure that
these covers are removed from the pump before
connecting any pipes.

4.5.1 Suction and discharge piping

The dimensions of the pipes do not directly depend
on suction and discharge diameters of the pump:
a) First, choose a flow speed < 2 m/s (7 ft/s) at

suction, and about 3 m/s (10 ft/s) at discharge.

b) Take into account the available NPSH, which

must be superior to the required NPSH of the
pump.

Never use pump as a support for
piping.

Do not mount expansion joints in
such a way that their force, due to internal pressure,
may act on the pump flange.

Maximum forces and moments allowed on the pump
flanges vary with the pump size and type. These
external strains may cause misalignment, hot
bearings, worn couplings, vibrations and the
possible failure of the pump casing.

When designing the pipes (§ 4.5.2.1, § 4.5.2.2, §

4.5.3.1) take necessary precautions in order not to
exceed maximum allowed strains.

Forces and moments applied to the pump flanges
must never exceed the values shown in the table
below:

Page 18 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

DN

Flange

150 160 200 180 310 45 60 80 110 6" 360 450 405 698 332 443 591 812
200 215 265 240 415 85 100 125 180 8" 484 596 540 934 627 738 923 1329
250 270 335 300 520 125 145 180 260 10" 608 754 675 1170 923 1070 1329 1919
300 320 400 360 625 170 200 240 355 12" 720 900 810 1406 1255 1476 1772 2621
350 375 465 420 730 220 255 310 455 14" 844 1046 945 1643 1624 1882 2288 3359

Vertical

discharge

400 430 530 480 835 275 320 390 570 16" 968 1193 1080 1879 2030 2362 2879 4208
450 485 600 540 940 340 390 480 705 18" 1091 1350 1215 2115 2510 2879 3543 5204
500 540 665 600 1040 410 470 580 850 20" 1215 1496 1350 2340 3027 3470 4282 6275
150 180 160 200 315 45 60 80 110 6" 405 360 450 709 332 443 591 812
200 240 215 265 415 85 100 125 180 8" 540 484 596 934 627 738 923 1329
250 300 270 335 520 125 145 180 260 10" 675 608 754 1170 923 1070 1329 1919
300 360 320 400 625 170 200 240 355 12" 810 720 900 1406 1255 1476 1772 2621
350 420 375 465 730 220 255 310 455 14" 945 844 1046 1643 1624 1882 2288 3359
400 480 430 530 835 275 320 390 570 16" 1080 968 1193 1879 2030 2362 2879 4208

Horizontal suction,

450 540 485 600 940 340 390 480 705 18" 1215 1091 1350 2115 2510 2879 3543 5204
500 600 540 665 1040 410 470 580 850 20" 1350 1215 1496 2340 3027 3470 4282 6275

Forces (daN) Moments (m.daN)

Fy Fz Fx

My Mz Mx

∑

∑F

∑∑

∑

∑M

∑∑

Flange

DN

Forces (lbf) Moments (lbf.ft)

Fy Fz Fx

My Mz Mx

∑

∑F

∑∑

∑

∑M

∑∑

Forces and moments values are applied to the
whole flanges and not flange-by-flange. For their
sharing out on the pump flanges, refer to standard
NFCR 13 931.

Ensure piping and fittings are flushed
before use.

Ensure piping for hazardous liquids is
arranged to allow pump flushing before removal of
the pump.

4.5.2 Suction piping

4.5.2.1 Design of a flooded suction line

The suction line must be as short and direct as
possible, never mount an elbow directly on the inlet
flange of the pump.

Valve

Non-return valve

Continuous
flow valve

Flooded suction configuration

a) Avoid sharp elbows or sudden narrowing. Use

convergent ≤ 20° (total angle).

b) Arrange the piping so that there are no air

pockets (no bulges).

c) If high points cannot be avoided in suction line,

provide them with air relief cocks.

d) If a strainer is necessary, its net area should be

three or four times the area of the suction pipe.

e) If an inlet valve is necessary, choose a model

with direct crossing.

Do not tighten flanges before the final

check (see § 4.5.4).

Page 19 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

m ano m e ter

4.5.2.2 Design of a suction lift line

The inlet pipe must be as short and as direct as
possible, never place an elbow directly on the pump
inlet nozzle.

I : Sufficient
immersion

Valve
Non-return
valve

I ≥ 3 x D

Valve-strainer

a) Avoid sharp elbows or sudden narrowing. Use

convergent ≤ 20° (total angle) with upright
generating.

b) Arrange that the suction piping is inclined

upwards towards the pump ensuring that there
are no peaks.

c) If a foot valve is necessary, do not oversize it

because it would generate pulsations (valve
beating).

Do not tighten flanges before the final

check (see § 4.5.4).

4.5.3 Discharge piping

4.5.3.1 Design of a discharge line

a) If discharge line is provided with a divergent, its

total angle will be between 7° and 12°.

b) Install the discharge valve after the non-return

valve downstream.

The non-return valve will be set in the discharge
pipe to protect the pump from any excessive
pressure surge and from reverse rotation.

If necessary, a control manometer (pressure gauge)
can be connected on the piping.

C ontro l

Do not tighten flanges before the final

check (see § 4.5.4).

4.5.4 Final checks

a) Check the tightening of anchor bolts. Tighten

them if necessary.

b) Check that protective covers on suction and

discharge flanges are removed.

c) Check that holes of piping flanges are parallel

and correspond to those of the pump.

d) Tighten suction and discharge flanges.

4.6 Electrical connections

Electrical connections must be made
by a qualified Electrician in accordance with relevant
local national and international regulations. This
includes any grounding.

It is important to be aware of the EUROPEAN
DIRECTIVE on potentially explosive areas where
compliance with IEC60079-14 is an additional
requirement for making electrical connections.

Avoid mechanical, hydraulic or electrical overload
by using motor overload trips or a power monitor and
make routine vibration monitoring.

It is important to be aware of the EUROPEAN
DIRECTIVE on electromagnetic compatibility when
wiring up and installing equipment on site. Attention
must be paid to ensure that the techniques used during
wiring/installation do not increase electromagnetic
emissions or decrease the electromagnetic immunity of
the equipment, wiring or any connected devices. If in
doubt, contact Flowserve for advice.

The motor must be wired up in
accordance with the motor manufacturer's
instructions (normally supplied within the terminal
box) including any temperature, earth leakage,
current and other protective devices as appropriate.

The identification nameplate should be checked to
ensure the power supply is appropriate.
A device to provide emergency stopping shall be
fitted.

Carry out the ground connections according to the
current local regulations.

To avoid any risk of jamming, the
direction of rotation will be checked after priming of
the pump (§ 5.3.1, 5.3.2) and before the first start (§

5.4.2).

Installation of the control manometer

Page 20 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

4.7 Final shaft alignment check

a) Check the alignment pump-motor according to

the procedure § 4.4.2. Rectify if necessary by
adjusting the motor only.

b) Check by hand that the pump turns freely.

A binding indicates a distortion of the pump,
which is due to excessive pipe strain. If
necessary the pipe design must be re-examined.

c) If it provided, connect auxiliary pipe systems

(hydraulic, pneumatic, sealing system).

d) Control tightness and functionality of auxiliary

piping.

4.8 Protection systems

The following protection systems are
recommended particularly if the pump is installed in
a potentially explosive area or is handling a
hazardous liquid. If in doubt consult Flowserve.

If there is any possibility of the system allowing the
pump to run against a closed valve or below
minimum continuous safe flow a protection device
should be installed to ensure the temperature of the
liquid does not rise to an unsafe level.

If there are any circumstances in which the system
can allow the pump to run dry, or start up empty, a
power monitor should be fitted to stop the pump or
prevent it from being started. This is particularly
relevant if the pump is handling a flammable liquid.

If leakage of product from the pump or its associated
sealing system can cause a hazard it is
recommended that an appropriate leakage detection
system is installed.

To prevent excessive surface temperatures at
bearings it is recommended that temperature or
vibration monitoring are carried out. See sections

5.5.4 and 5.5.5.
If a defect of cooling can lead to temperature higher

than those acceptable a system of cooling
surveillance must be installed.

Except when explicitly required by the customer in
the specifications, when a possibility of reverse
rotation exists the customer must install a reverse
rotation protection device.

The customer must install all equipment required to
avoid water hammer.

5 COMMISSIONING, START-UP,
OPERATION AND SHUTDOWN

These operations must be carried out by

fully qualified personnel.

5.1 Direction of rotation

Starting or operating pumps with the
wrong direction of rotation can be harmful to the
pumps. Ensure that the pump rotation is the same
as the arrow on the pump casing.

It is preferable to check the direction of rotation
before installing the coupling. If not, the pump must
be filled in with the liquid before start-up.

If maintenance work has been carried
out to the site's electricity supply, the direction of
rotation should be re-checked as above in case the
supply phasing has been altered.

5.2 Guarding

Guarding is supplied fitted to the pump set.

If this has been removed or disturbed ensure
that all the protective guards around the pump
coupling and exposed parts of the shaft are securely
fixed.

5.3 Priming and auxiliary supplies

Where there is any risk of the pump being run
against a closed valve generating high liquid and
casing external surface temperatures it is
recommended that users fit an external surface
temperature protection device.

Ensure all electrical, hydraulic,
pneumatic, sealant and lubrication systems (as
applicable) are connected and operational.

Ensure the inlet pipe and pump
casing are completely full of liquid before starting
continuous duty operation.

These operations must be carried out by personnel
with approved qualifications.

Page 21 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

Air escape

EXTERNAL SOURCE

5.3.1 Priming of a flooded pump

a) Close the discharge valve; fill the pump by

opening the suction valve. Let air escape by
removing the plug located on the piping.

b) The discharge pipe is headed and there is a by-

pass valve on the check valve, open slightly the
discharge valve and the by-pass of the check
valve.

c) When the pump is totally free of air bubbles,

replace the plugs.

Priming of a flooded suction pump

5.3.2 Priming of a sump suction pump

* With foot valve:
a) Fill suction pipe and casing with liquid from an

independent source (pressure 1 to 2 bars or 15
to 30 psi).

b) Let air escape by removing the plugs located on

the piping.

c) When the pump is totally free of air bubbles,

replace the plugs.

Air escape

Priming of a sump suction

configuration with foot valve

*Without foot valve:

Priming may be accomplished by means of venting
system.

Foot valves are not recommended when
the pumped liquid has suspended solid particles.
They may lodge between foot valve seat and
shutter.

5.4 Starting the pump

5.4.1 Bring controls and preparation before the
first starting and after each service call

Necessarily:

a) Check the tightening of the different plugs.
b) Check that the gland lightly tightens the packing

rings.

c) Risk of seal ring overheating.
d) Check the direction of rotation of the motor.

Refer to the rotation arrow of the pump.

e) Install all protection systems and more

particularly the coupling guard and the shield
grid (reference [9331]) of the bearing.

f) Open all suction valves (if existing).
g) Close the outlet valve and the bypass valve.

h) Ensure inlet pipe and pump casing are

completely full of liquid.

5.4.2 First pump start-up

Suction valves must be fully open
when pump is running. Never run the pump dry, it
will cause damage.

a) Start motor and check outlet pressure.If

pressure is satisfactory, slowly OPEN outlet
valve.

c) Do not run the pump with the outlet valve closed

for a period longer than 30 seconds.

d) If NO pressure, or LOW pressure, STOP the

pump. Refer to faultfinding chart for fault
diagnosis.

The pump should run smoothly and without
vibration.
The pump must never run at a capacity of less than
40 % of that at the best efficiency.

Never remove a plug when the pump is

running.

Page 22 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

5.5 Running the pump

5.5.1 Venting the pump

Vent the pump to enable all trapped air to
escape taking due care with hot or hazardous
liquids.
Under normal operating conditions, after the pump
has been fully primed and vented, it should be
unnecessary to re-vent the pump.

5.5.2 Pump fitted with a stuffing box

If the pump has a packed gland there must be some
leakage from the gland. Gland nuts should initially
be finger tight only. Leakage should take place soon
after the stuffing box is pressurized. If no leakage
takes place the packing will begin to overheat. If
overheating takes place the pump should be
stopped and allowed to cool before being restarted.
When the pump is restarted it should be checked to
ensure leakage is taking place at the packed gland.

When adjusting an operating stuffing box
(shield grids removed for this operation) the operator
must be very careful. Safety gloves are compulsory
and loose clothes are not allowed (above all to the
arms) to avoid being caught by the pump shaft.

The pump should be run for ten minutes with steady
leakage and the gland nuts tightened by 10 degrees
at a time until leakage is reduced to an acceptable
level. The temperature of the gland should be
checked after each round of tightening.

If the temperature starts to climb rapidly then back
off the gland nuts until the temperature drops down.
Wait for the temperature to stabilize before
tightening again. The leakage must not be reduced
below a rate of 20 drops per minute. Bedding in of
the packing may take several hours.

5.5.3 Pump fitted with mechanical seal

A mechanical seal ensures a seal without leakage
and does not need any adjustment. Nevertheless if a
light leakage occurs during start-up, it should
disappear after the initial running in of the friction
faces.

Mechanical Seal
For ME 150-200,
200-250, 200-315
200-355, 250-250
250-315, 300-300

Simple mechanical
seal

Others ME

Balanced
mechanical seal

Others ME

NEVER RUN A MECHANICAL SEAL

DRY, EVEN FOR A SHORT WHILE.

SAFETY INSTRUCTIONS WHEN THE PUMP IS
RUNNING:

If hot or freezing components of the machine
can present a danger to operators, they must be
shielded to avoid accidental contact. If a 100 %
protection is not possible, the machine access must
be confined to the maintenance staff only.

Shield grids being removed during installation
of the gland packing, it must be ensured that they
are replaced as soon as this operation is completed.

Page 23 of 36 flowserve.com

If the temperature is greater than 80 °C (176
°F), a warning plate must be clearly placed on the
pump.

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

It is strictly forbidden to open switch
cupboards, switch boxes, or all other live electric
equipment. If it is necessary to open them in order to
take readings, to carry out tests or adjustments for
example, only a skilled technician may do them with
adapted tools. Make sure that physical protections
against electrical risks are used.

5.5.4 Bearings

If the pumps are working in a potentially
explosive atmosphere, temperature or vibration
monitoring at the bearings is recommended. If
bearing temperatures are to be monitored it is
essential that a benchmark temperature is recorded
at the commissioning stage and after the bearing
temperature has stabilized.

• Record the bearing temperature (t) and the

ambient temperature (ta)

• Estimate the likely maximum ambient

temperature (tb)

• Set the alarm at (t+tb-ta+5) °C [(t+tb-ta+10) °F]

and the trip at 100 °C (212 °F) for oil lubrication

and 105 °C (220 °F) for grease lubrication
It is important, particularly with grease lubrication, to
keep a check on bearing temperatures. After start up
the temperature rise should be gradual, reaching a
maximum after approximately 1.5 to 2 hours. This
temperature rise should then remain constant or
marginally reduce with time.

5.5.5 Normal vibration levels, alarm and trip

For guidance, pumps generally fall under a
classification for rigid support machines within the
International rotating machinery standards and the
recommended maximum levels below are based on
those standards.

Alarm and trip values for installed
pumps should be based on the actual
measurements (N) taken on site on the bearing
housings of the pump in the fully commissioned as
new condition. The example (N) value is given for
the preferred operating flow region (typically this
may extend to 70 to 120 % of the pump best
efficiency point); outside the preferred flow region
the actual vibration experienced may be multiplied
by up to 2.

These standard values can vary with the rotational
speed and the power absorbed by the pump. For
any special case, do not hesitate to consult us.
Measuring vibration at regular intervals will then
show any deterioration in pump or system operating
conditions.

Vibration Velocity - unfiltered

Normal N
Alarm N x 1.25
Shutdown Trip N x 2.0

Horizontal Configuration

mm/s (in./s) r.m.s.

≤ 5.6 (0.22)
≤ 7.1 (0.28)

≤ 11.2 (0.44)

5.5.6 Stop/start frequency

Pump sets are normally suitable for the number of
equally spaced stop/starts per hour shown in the
table below. Check actual capability of the driver and
control/starting system before commissioning.

Motor rating kW (hp)

Up to 15 (20) 15

Between 15 (20) and 90 (120) 10

90 (120) to 150 (200) 6

Above 150 (200) Refer

Maximum stop/starts

per hour

Where duty and standby pumps are installed it is
recommended that they are run alternately every
week.

5.6 Stopping and shutdown

According to hydraulic conditions of
the installation and its automation degree, stop and
restart procedures can have different forms.
Nevertheless all of them must respect imperatively
the following rules:

5.6.1 Stopping < 1 hour

a) Isolate motor.
b) Avoid reverse rotation of the pump.
c) Make sure that the discharge line pressure does

not reach the foot valve.

5.6.2 Stopping < 1 month

a) Isolate motor.
b) Avoid reverse rotation of the pump.
c) Make sure that the discharge line pressure does

not reach the foot valve.

d) Close the outlet valve. Eventually close the inlet

valve.

e) Switch off external power supply,

flushing/quench, cooling liquid.

5.6.3 Shutdown > 1 month

a) Isolate motor.
b) Avoid reverse rotation of the pump.
c) Make sure that the discharge line pressure does

not reach the foot valve.

d) Close the outlet valve. Eventually close the inlet

valve.

e) Switch off external power supply,

flushing/quench, cooling liquid.

Page 24 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

f) Keep the pump fully filled with water. In case of

pumped liquid other than water, drain the pump
entirely.

g) Turn once per week the pump shaft of one or

two turns.

h) Never restart the pump without carrying out the

verifications recommended before starting (see

§ 5.4.1).

When ambient temperatures are
likely to drop below freezing point, the pump and any
cooling and flushing arrangements must be drained
or otherwise protected.

5.6.4 Restarting in continuous running

a) Ensure that the pump is completely full of liquid.
b) Ensure a continuous supply with a sufficient

available NPSH.

c) Ensure a backpressure so that the motor power

is not in excess.

d) Respect the starting frequency

imposed by the motor manufacturer.

e) Protect the pump against water hammer

when stopping or starting.

5.7 Hydraulic, mechanical and electrical
duty

This product has been supplied to meet the
performance specifications of your purchase order,
however it is understood that during the life of the
product these may change.

The following notes may help the user decide how to
evaluate the implications of any change. If in doubt
contact your nearest Flowserve office.

5.7.1 Specific gravity (SG)

Pump capacity and total head in meters (feet) do not
change with SG, however pressure displayed on a
pressure gauge is directly proportional to SG. Power
absorbed is also directly proportional to SG.

It is therefore important to check that any change in
SG will not overload the pump driver or over­pressurize the pump.

5.7.2 Viscosity

For a given flow rate the total head reduces with
increased viscosity and increases with reduced
viscosity. Also for a given flow rate the power
absorbed increases with increased viscosity, and
reduces with reduced viscosity. It is important that
checks are made with your nearest Flowserve office
if changes in viscosity are planned.

5.7.3 Pump speed

Changing pump speed effects flow, total head,
power absorbed, NPSHR, noise and vibration. Flow
varies in direct proportion to pump speed, head
varies as speed ratio squared and power varies as
speed ratio cubed.
The new duty, however, will also be dependent on
the system curve. If increasing the speed, it is
important therefore to ensure the maximum pump
working pressure is not exceeded, the driver is not
overloaded, NPSHA > NPSHR, and that noise and
vibration are within local requirements and
regulations.

5.7.4 Net positive suction head (NPSHA)

NPSH available (NPSHA) is the head available at the
impeller inlet, above the vapor pressure of the
pumped liquid.

NPSH required (NPSHR) is the minimum head required
at the impeller inlet, above the vapor pressure of the
pumped liquid, to avoid excessive cavitation and
extreme performance degradation.

It is important that NPSHA > NPSHR. The margin
between NPSHA > NPSHR should be as large as
possible.

If any change in NPSHA is proposed, ensure these
margins are not significantly eroded. Refer to the
pump performance curve to determine exact
requirements particularly if flow has changed. If in
doubt please consult your nearest Flowserve office
for advice and details of the minimum allowable
margin for your application.

5.7.5 Pumped flow

Flow must not fall outside the minimum and
maximum continuous safe flow shown on the pump
performance curve and or data sheet.

5.8 Pumps for Food Use or Potable
Water

If the pump has not been specifically ordered for a
food or drinking water application it must not be
used for these types of applications. If it has been
ordered for this type of application the following
recommendations are to be followed.

5.8.1 Cleaning prior to operation

Pumps that are to be used for a food or drinking
water application should be cleaned before being
put into initial operation and after the installation of
spare parts that are in contact with the liquid.
Cleaning once the pump has been commissioned
will depend on the application and operating
conditions. The user must ensure that the cleaning
procedures are suitable for the application and
operating conditions, and local regulations.

Page 25 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

6 MAINTENANCE

6.1 General

If a belt drive is used, the assembly and
tension of the belts must be verified during regular
maintenance procedure.

In dirty or dusty environments, regular checks
must be made and dirt removed from areas around
close clearances, bearing housings and motors.

It is the plant operator's responsibility to
ensure that all maintenance, inspection and
assembly work is carried out by authorized and
qualified personnel who have adequately
familiarized themselves with the subject matter by
studying this manual in detail (see also section

1.6.2).
Any work on the machine must be performed when it

is at a standstill. It is imperative that the procedure
for shutting down the machine is followed, as
described in section 5.6.

On completion of work all guards and safety devices
must be re-installed and made operative again.
Before restarting the machine, the relevant
instructions listed in section 5, Commissioning, start
up, operation and shut down must be observed.

Oil and grease leaks may make the ground
slippery. Machine maintenance must always
begin and finish by cleaning the ground and the
exterior of the machine.

If platforms, stairs and guardrails are required for
maintenance, they must be placed for easy access
to areas where maintenance and inspection are to
be carried out. The positioning of these accessories
must not limit access or hinder the lifting of the part
to be serviced.

When air or compressed inert gas is used in the
maintenance process, the operator and anyone in
the vicinity must be careful and have the appropriate
protection.

Do not spray air or compressed inert gas on skin.
Do not direct an air or gas jet towards other people.
Never use air or compressed inert gas to clean

clothes.
Before working on the pump, take measures to

prevent an uncontrolled start. Put a warning board
on the starting device with the words:
"Machine under repair: do not start".

With electric drive equipment, lock the main switch
open and withdraw any fuses. Put a warning board
on the fuse box or main switch with the words:

"Machine under repair: do not connect".

Never clean equipment with inflammable solvents or
carbon tetrachloride. Protect yourself against toxic
fumes when using cleaning agents.

6.2 Maintenance schedule

It is recommended that a maintenance plan
and schedule is adopted, in line with these User
Instructions. It should include the following:
a) The pump must be completely vented and

drained and rendered inert before any
disassembly operation.

b) Any auxiliary systems installed must be

monitored, if necessary, to ensure they function
correctly.

c) During cleaning of the pump ensure the

compatibility between the cleaning products and

the gaskets.
d) Verify the condition of the gaskets.
e) Gland packing must be adjusted correctly to give

visible leakage and concentric alignment of the

gland follower to prevent excessive temperature

of the packing or follower. Mechanical seals

should present no leakage.
f) Check for any leaks from gaskets and seals.

The correct functioning of the shaft seal must be

checked regularly.
g) Check bearing lubricant level, and if the hours

run show a lubricant change is required.
h) Check that the duty condition is in the safe

operating range for the pump.
i) Check vibration, noise level and surface

temperature at the bearings to confirm

satisfactory operation.
j) Check the tightness of the connections.
k) Check dirt and dust is removed from areas

around close clearances, bearing housings and

motors.
l) Check coupling alignment and re-align if

necessary.
m) Verify the correct operation of the system.

The equipment used for maintenance and
disassembly in an ATEX zone must be in conformity
with the requirements zone.

Our specialist service personnel can help with
preventative maintenance records and provide
condition monitoring for temperature and vibration to
identify the onset of potential problems.

Page 26 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

Grease

If any problems are found the following sequence of
actions should take place:
a) Refer to section 7, Faults; causes and remedies,

for fault diagnosis.

b) Ensure equipment complies with the

recommendations in this manual.

c) Contact Flowserve if the problem persists.

Grease
nipple

nipple

6.2.1 Standard maintenance

Roller bearing

6.2.1.1 For ME 150-200, 200-250, 200-315, 200­355, 250-250, 250-315, 300-300

The bearing housings are provided with sealed for
life ball bearings. No maintenance is required.

6.2.1.2 For other ME

The bearings fitted are prepacked with grease at the
factory. When the regressing period is reached it is

6.2.2 Routine inspection (daily/weekly)

necessary to remove as much of the old grease as
possible with a clean lint free cloth and repack the
bearings with fresh grease.

Lubrication in

hours frequency *of

Pump type

ME 150 - 500 4 000 4 000 30 (1.01) 30 (1.01)
ME 200 - 400 8 000 8 000 25 (0.85) 25 (0.85)
ME 200 - 500 4 000 4 000 30 (1.01) 30 (1.01)
ME 250 - 355 8 000 8 000 25 (0.85) 25 (0.85)
ME 250 - 400 8 000 8 000 25 (0.85) 25 (0.85)
ME 250 - 500 4 000 4 000 30 (1.01) 30 (1.01)
ME 300 - 400 8 000 8 000 25 (0.85) 25 (0.85)
ME 300 - 450 4 000 4 000 30 (1.01) 30 (1.01)
ME 300 - 500 3 500 3 500 50 (1.69) 50 (1.69)
ME 350 - 350 4 000 4 000 40 (1.35) 40 (1.35)
ME 400 - 500 3 500 3 500 50 (1.69) 50 (1.69)
ME 400 - 650 3 500 3 500 50 (1.69) 50 (1.69)
ME 500 - 500 3 500 3 500 50 (1.69) 50 (1.69)

operation

Coupling

side

Pump

side

Added quantity in

cm3 (oz)

Coupling

side

Pump

side

* At least once a year
The grease used in factory for first filling is:

SHELL ALVANIA R2

and the appropriate action taken to remedy any
deviations:
a) Check operating behavior. Ensure noise,

vibration and bearing temperatures are normal.
b) Check that there are no abnormal fluid or

lubricant leaks (static and dynamic seals) and

that any sealant systems (if fitted) are full and

operating normally.
c) Pump fitted with a stuffing box: leakage of 20

drops per minute.
d) Pump fitted with a mechanical seal: no leakage.
e) Check the level and condition of oil lubricant. On

grease lubricated pumps, check running hours

since last recharge of grease or complete

grease change.

6.2.3 Periodic inspection (six monthly)

a) Check foundation bolts for

security of attachment and corrosion.
b) Check pump-running records for hourly usage to

determine if bearing lubricant requires changing.
c) The coupling should be checked for correct

alignment and worn driving elements.

The following checks should be made

Its equivalents: MOBIL: Mobilux EP 2,
TOTAL: Multis 2,
ELF : ELF MULTI

motor pump unit, the user must:

If a check shows a bad running of the

a)



Refer to the "fault finding chart" chapter 7

of this leaflet to apply the recommended

solutions.
b) Ensure that your equipment corresponds to the

arrangements of this leaflet.
c) Contact Flowserve after-sales Department if the

problem persists.

Page 27 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

6.2.4 Mechanical seals

The current maintenance is limited to seal control. It
is necessary to detect any small leakage which
announces the beginning of the deterioration of
friction faces or secondary seal elements (rings,
bellows, synthetic membranes). It is advisable to
stop the pump as soon as possible. Have an
approved seal vendor replace or repair the seal.

6.2.5 Gland packing

6.2.5.1 Pump fitted with a packed gland

A well run in and correctly adjusted packing gland
requires little maintenance.
If, after some time, the leakage becomes too great,
the gland should be tightened again in order to
return these to a normal level.

If re-tightening is not possible, new packing must be
installed.

6.2.5.2 Gland packing inspection and removal

a) Remove the shield guards.
b) Slide back the gland.
c) Remove the packing rings with an extractor

designed for this purpose (including the lantern
ring if it exists; note its position and its direction
of rotation).

d) Inspect the state of the sleeve surface; the

presence of many marked grooves will indicate
that it must be replaced.

e) Carefully clean the different pieces of the

packing gland.

6.2.5.3 Gland packing fitting

If the packing is supplied as cord the packing must
be cut so that the external diameter is lightly
tightened and there is an initial gap between the
sleeve and the packing ring. For that purpose, wind
the packing helically around the shaft sleeve or a
chuck of the same diameter. (Take precautions to
avoid damaging sleeve).

SETTING OF PACKING

Follow the instructions:
a) Assemble of the packing in S.
b) Stagger by about 90° between two rings.
c) Assemble packing after packing.

After setting the last packing ring, secure the
packing with the gland and tighten the nut by hand.

After tightening, the shaft should turn by hand as
easily as before the setting of the packing.

Example of straight cut Example of bevel cut

Ensure a tightening on the stuffing

box housing and not on the sleeve.

Page 28 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

PUMP

ME 150-200
ME 150-500
ME 200-250
ME 200-315
ME 200-355
ME 200-400
ME 200-500
ME 250-250
ME 250-315
ME 250-355
ME 250-400
ME 250-500
ME 300-300
ME 300-400
ME 300-450
ME 300-500
ME 350-350
ME 400-500
ME 400-650

ME 500-500

Dimensions in mm (in.) Gland packing

Stuffing

box
size

44/64 38 (1.50) 44 (1.73) 64 (2.52) 86 (3.39) M12 45 (1.77) 4 10 (0.39)
55/90 55 (2.16) 65 (2.56) 90 (3.54) 120 (4.72) M16 65 (2.56) 5 12 (0.47)
44/64 38 (1.50) 44 (1.73) 64 (2.52) 86 (3.39) M12 45 (1.77) 4 10 (0.39)
56/76 50 (1.97) 56 (2.20) 76 (2.99) 86 (3.39) M12 45 (1.77) 4 10 (0.39)
56/76 50 (1.97) 56 (2.20) 76 (2.99) 86 (3.39) M12 45 (1.77) 4 10 (0.39)
49/85 49 (1.93) 60 (2.36) 85 (3.35) 110 (4.33) M14 65 (2.56) 5 12 (0.47)
55/90 55 (2.16) 65 (2.56) 90 (3.54) 120 (4.72) M16 65 (2.56) 5 12 (0.47)
56/76 50 (1.97) 56 (2.20) 76 (2.99) 86 (3.39) M12 45 (1.77) 4 10 (0.39)
56/76 50 (1.97) 56 (2.20) 76 (2.99) 86 (3.39) M12 45 (1.77) 4 10 (0.39)
49/85 49 (1.93) 60 (2.36) 85 (3.35) 110 (4.33) M14 65 (2.56) 5 12 (0.47)
55/90 55 (2.16) 65 (2.56) 90 (3.54) 120 (4.72) M16 65 (2.56) 5 12 (0.47)
55/90 55 (2.16) 65 (2.56) 90 (3.54) 120 (4.72) M16 65 (2.56) 5 12 (0.47)
56/76 40 (1.57) 56 (2.20) 76 (2.99) 86 (3.39) M12 45 (1.77) 4 10 (0.39)
55/90 55 (2.16) 65 (2.56) 90 (3.54) 120 (4.72) M16 65 (2.56) 5 12 (0.47)
55/90 55 (2.16) 65 (2.56) 90 (3.54) 120 (4.72) M16 65 (2.56) 5 12 (0.47)

74/120 74 (2.91) 90 (3.54) 120 (4.72) 150 (5.90) M16 64 (2.52) 4 14 (0.55)

55/90 55 (2.16) 65 (2.56) 90 (3.54) 120 (4.72) M16 65 (2.56) 5 12 (0.47)
74/120 74 (2.91) 90 (3.54) 120 (4.72) 150 (5.90) M16 64 (2.52) 4 14 (0.55)
74/120 74 (2.91) 90 (3.54) 120 (4.72) 150 (5.90) M16 64 (2.52) 4 14 (0.55)

80/132 80 (3.15) 100 (3.94) 132 (5.20) 180 (7.09) M16 72 (2.83) 4 16 (0.63)

D1 D2 D3 D4 D5 L1 Qty

6.2.6 Internal coating

If the pump has an internal coating, this coating
must be inspected periodically. Any wear or cracks
of the coating found must be immediately repaired.
Failure to do this may lead to accelerated wear of
the coating during operation and corrosion of the
exposed base metal, depending on the material and
pumped liquid. Special attention must be paid to the
coating edges. Any loss of coating material is
considered to be normal wear and tear on the pump
and is not considered as warranty. Flowserve has
applied the coatings according to the supplier's
instructions but will not be held responsible for
coating wear or cracks that may develop over time.

6.3 Spare parts

6.3.1 Ordering of spares

Flowserve keeps records of all pumps that have
been supplied. When ordering spares the following
information should be quoted:

1) Pump serial number.

2) Pump size

3) Part name

4) Part number

5) Number of parts required

The pump size and serial number are shown on the
pump nameplate.

To ensure continued satisfactory operation,
replacement parts to the original design specification
should be obtained from Flowserve. Any change to







mm

(in)

the original design specification (modification or use
of a non-standard part) will invalidate the pump’s
safety certification.

6.3.2 Storage of spares

Spares should be stored in a clean dry area away
from vibration. Inspection and re-treatment of
metallic surfaces (if necessary) with preservative is
recommended at 6 monthly intervals.

6.4 Recommended spares and
consumable items

[1500], [2250], [3011], [3012], [4130], [4610]
a) Destroy all the gaskets after dismantling, replace

them when reassembling.

b) It is recommended that bearings

are not reused after any removal from the shaft.

c) After serving during two years, replace the gland

packing.

Page 29 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

6.5 Disassembly

Refer to section 1.6, Safety, and section 6

Maintenance, before dismantling the pump.

Before dismantling the pump for
overhaul, ensure genuine Flowserve replacement
parts are available. Refer to sectional drawings for
part numbers and identification.

REPAIR OF THE PUMP

If the pump presents abnormalities or a

persistent malfunction, contact immediately:

FLOWSERVE

After-sales Service
Tel.: [phone]

(33) 2 43 40 57 57

Fax.: [phone]

(33) 2 43 40 58 17

According to the After-sales Service instructions,
disassembly will be limited to the dismantling of the
pump:

a) DISCONNECT THE UNIT FROM

POWER.
b) Close the inlet valve (if fitted) and outlet valve.
c) Wait for the moment when the pump casing is

cooled and at ambient temperature.
d) DRAIN PUMP

e) Dismantle inlet and outlet pipeworks as well as

all pipeworks.
f) REMOVE PUMP TAKING INTO

ACCOUNT SAFETY (§ 1) AND HANDLING (§

2.2) PROCEDURES.

ANY DISASSEMBLY, REPAIR OR

REASSEMBLY WILL BE CARRIED OUT UNDER
FLOWSERVE' RESPONSABILITY, EITHER
DIRECTLY BY THE AFTER-SALES SERVICE OR
BY OTHER FLOWSERVE-AGENTS WHO WILL
GET THE REQUIRED INSTRUCTIONS AND
APPROVALS. THIS IS THE CASE OF
AUTHORIZED REPAIRERS WHOSE ADDRESSES
AND TELEPHONE NUMBERS WILL BE GIVEN
ON REQUEST.

Page 30 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

Insufficient flow rate

Irregular pump running

Driver overloaded

Mechanical

seal leak

Equipment vibration

Excessive pump casing temperature

 

 

 





 





  













 

 



   

   



   









Insufficient pressure

Pump looses prime after starting



 

















7 FAULTS; CAUSES AND REMEDIES

POSSIBLE CAUSES SOLUTIONS

POSSIBLE CAUSES SOLUTIONS

Rotation speed too low (check the driver)

Presence of air - Check and de-aerate
Suction pressure insufficient - Check: the available NPSH > the required NPSH
Mechanical defects - CONSULT FLOWSERVE
Air leak in the suction pipe - Check suction pipe is airtight
Restriction in suction pipe - Check diameter of suction pipe
Suction level too low - Check the NPSH >NPSH

Obstruction of suction pipe - Check condition of pipe
Defective gland packing on the shaft - Check and replace all the gland packing.

Defective gasket - CONSULT FLOWSERVE

Pump or suction pipe not completely filled - Check and complete filling
Air bubbles in pipes - Check and desecrate the pipes
Suction level too low - Check: the available NPSH > the required NPSH

- Reduce geometrical suction lift

- Reduce head losses in pipes and in fittings (diameter increase
and appropriate fitting positions)

- Check valves and strainers

- Check the immersion head of the suction valve
Wrong rotation - Reverse 2 phases on motor terminal boxes
The motor is running on 2 phases only - Check and control the motor electrical power supply
Motor running too low

Total manometric head system higher than
pump differential head

Total manometric head system lower than
pump differential head

Pipes (valves, filter...) - Control, dismantle and clean
Insufficient flow rate - Check the suction and discharge pipes (valves, back pressure)
Worn wear-ring surfaces - Foresee pump mending: CONSULT FLOWSERVE
Seizure, jamming - CONSULT FLOWSERVE
Excessive strains on flanges

Defective gland packing on the shaft - Check and replace all the gland packing parts

Defective motor bearings - CONSULT FLOWSERVE
Specific gravity or viscosity of liquid too high - Consult our local agent to analyze the problem
Misalignment - Check the alignment of the pump and of its driver
Foundations not sufficiently rigid

- Check the connection in the terminal box according to the

voltage

- Check the discharge head

- Check the head losses in discharge pipes (partly closed valve,

foreign particles, back pressure too high)

- Modify the installation or change the pump set

-Throttle at discharge valve or trim the impeller (contact our local

agent): CONSULT FLOWSERVE

- Check the flange connections and eliminate strains (pipe

positioning or elastic sleeves mounting)

- Mechanical seal: CONSULT FLOWSERVE

- Check the setting of base plates: tightening, bad adjustment,

seal

- Check the connection in the terminal box according to the

voltage

- Reduce geometrical suction lift

- Reduce head losses in pipes and in fittings (diameter increase

and appropriate fitting positions)

- Check valves and strainers

- Check the immersion head of the suction valve

- Mechanical seal: CONSULT FLOWSERVE

Page 31 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

9331

1500

-01

8 PARTS LIST AND DRAWINGS

8.1 Sectional drawings

Pump ME Bearing Size 32/42

With wear-rings

Page 32 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

1500

-02

1500

-01

Pump ME Bearing Size 55

9331

Bearing 55A

Bearing 55B

With wear-rings

Page 33 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

9331

1500

-02

1500

-01

Pump ME Bearing Size 70

With wear-rings

Page 34 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

8.2 Sectional drawings part list

ITEM DESIGNATION ITEM DESIGNATION

1110

1221

1221-01

1221-02

1500-01

1500-02

2110

2250

2450

2450-01

2540

2905

2905-01

2905-02

2912

3011

3012

3126

3134

3200

3260

3260-01

3260-02

3712

3853

3863

4120

4130

Pump casing

Casing cover

Casing cover

Casing cover

Wear ring

Wear ring

Pump shaft
Radial flow impeller

shrouded
Shaft sleeve

Shaft sleeve

Thrower

Washer

Washer

Washer

Impeller nut

Radial ball bearing
Radial roller

bearing
Shim

Support foot

Bearing housing

Bearing cover

Bearing cover

Bearing cover

Bearing nut

Grease nipple

Grease regulator

Gland

Gland packing

4200

4590-01

4590-02

4590-03

4610-01

4610-02

6511

6515

6541

6544

6544-01

6544-02

6569

6572

6572-01

6572-02

6572-03

6577-01

6577-02

6577-03

6581

6581-01

6581-02

6581-03

6581-04

6700-01

6700-02

9331

Mechanical seal

Gasket

Gasket

Gasket

O-ring

O-ring

Priming plug

Drain plug

Lockwasher

Circlip

Circlip

Circlip

Screwed plug

Stud

Stud

Stud

Stud

Hexagon head bolt

Hexagon head bolt

Hexagon head bolt

Hexagon nut

Hexagon nut

Hexagon nut

Hexagon nut

Hexagon nut

Coupling key

Impeller key

Cover plate

8.3 General arrangement drawing

The typical general arrangement drawing and any
specific drawings required by the contract will be sent
to the Purchaser separately unless the contract
specifically calls for these to be included into the
User Instructions. If required, copies of other
drawings sent separately to the Purchaser should
be obtained from the Purchaser and retained with
these User Instructions.

9 CERTIFICATION

Certificates determined from the Contract
requirements are provided with these instructions
where applicable. Examples are certificates for CE
marking, ATEX marking etc. If required, copies of
other certificates sent separately to the Purchaser
should be obtained from the Purchaser for
retention with these User Instructions.

10 OTHER RELEVANT
DOCUMENTATION AND MANUALS

10.1 Supplementary User Instructions

Supplementary instructions such as for a driver,
instrumentation, controller, seals, sealant system
etc are provided as separate documents in their
original format. If further copies of these are
required they should be obtained from the supplier
for retention with these User Instructions.

10.2 Change notes

If any changes, agreed with Flowserve, are made to
the product after its supply, a record of the details
should be maintained with these User Instructions.

10.3 Additional sources of information

Reference 1:

NPSH for Rotor dynamic Pumps: a reference
guide, Euro pump Guide No. 1, Euro pump &
World Pumps, Elsevier Science, United Kingdom,

1999.

Reference 2:

Pumping Manual, 9th edition, T.C. Dickenson,
Elsevier Advanced Technology, United Kingdom,

1995.

Reference 3:

Pump Handbook, 2nd edition, Igor J. Karassik et al,
McGraw-Hill Inc., New York, 1993.

Reference 4:

ANSI/HI 1.1-1.5, Centrifugal Pumps ­Nomenclature, Definitions, Application and
Operation.

Reference 5:

ANSI B31.3 - Process Piping.

Page 35 of 36 flowserve.com

ME USER INSTRUCTIONS ENGLISH 71576287 - 02/13

Repair & Service Fax:

+33 2 43

40 58 17

Your Flowserve factory contacts:

Flowserve Pompes SAS
13, rue Maurice Trintignant
CS 10001
72234 Arnage Cedex, France

Telephone (24 hours): [phone]
Sales & Admin: [phone]

Local Flowserve factory representatives:

North America:
Flowserve Pump Division
5310 Taneytown Pike, PO Box 91
Taneytown, MD 21787-0091, USA

Telephone: [phone]
Customer Service FAX: [phone]
Parts inquiry/Order PH: [phone]

South America:
Flowserve do Brasil Ltda
Av. Don Helder Camara, 5451
20771-001 Rio de Janerio, Brasil

Telephone: [phone]
Fax: [phone]

To find your local Flowserve representative please
use the Sales Support Locator System found at
www.flowserve.com

FLOWSERVE REGIONAL
SALES OFFICES:

USA and Canada

Flowserve Corporation
5215 North O’Connor Blvd.,
Suite 2300
Irving, Texas 75039-5421 USA
Telephone [phone]
Fax [phone]

Europe, Middle East, Africa

Flowserve FSG - Italy
Worthing S.P.A.
Via Rossini 90/92
20033 Desio (Milan) Italy
Telephone [phone]
Fax [phone]

Latin America and Caribbean

Flowserve Corporation
6840 Wynnwood Lane
Houston, Texas 77008 USA
Telephone [phone]
Fax [phone]

Asia Pacific

Flowserve Pte. Ltd
10 Tuas Loop
Singapore 637345
Telephone [phone]
Fax [phone]