Flowserve CPXM User Manual

USER INSTRUCTIONS

CPXM and CPXRM

Installation

Operation

Close coupled, single stage, end suction, centrifugal,
chemical process pumps

PCN=71569101 10-08 (E) (Based on C939KH038 and
C939KH050.) Original instructions.

Maintenance

These instructions must be read prior to installing,

operating, using and maintaining this equipment.

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

CONTENTS

Page

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

1.1 General ...........................................................4

1.2 CE marking and approvals..............................4

1.3 Disclaimer .......................................................4

1.4 Copyright.........................................................4

1.5 Duty conditions................................................ 4

1.6 Safety..............................................................5

1.7 Nameplate and safety labels...........................8

1.8 Specific machine performance........................8

1.9 Noise level.......................................................8

2 TRANSPORT AND STORAGE..............................9

2.1 Consignment receipt and unpacking...............9

2.2 Handling..........................................................9

2.3 Lifting...............................................................9

2.4 Storage............................................................9

2.5 Recycling and end of product life..................10

3 DESCRIPTION ....................................................10

3.1 Configurations...............................................10

3.2 Name nomenclature......................................10

3.3 Design of major parts....................................10

3.4 Performance and operating limits................. 11

4 INSTALLATION.................................................... 11

4.1 Location......................................................... 11

4.2 Part assemblies.............................................12

4.3 Foundation ....................................................12

4.4 Grouting ........................................................12

4.5 Piping ............................................................13

4.6 Electrical connections ...................................14

4.7 Protection systems........................................15

6 MAINTENANCE ...................................................17

6.1 General..........................................................17

6.2 Maintenance schedule...................................17

6.3 Spare parts.....................................................18

6.4 Recommended spares...................................18

6.5 Tools required ................................................18

6.6 Fastener torques............................................19

6.7 Setting impeller clearance .............................19

6.8 Disassembly ..................................................20

6.9 Examination of parts......................................20

6.10 Assembly .....................................................21

6.11 Sealing arrangements..................................22

7 FAULTS; CAUSES AND REMEDIES...................24

8 PARTS LISTS AND DRAWINGS .........................26

8.1 CPXM ............................................................26

8.2 CPXRM..........................................................27

8.3 General arrangement drawing.......................28

9 CERTIFICATION..................................................28

10 OTHER RELEVANT DOCUMENTATION

AND MANUALS................................................28

10.1 Supplementary User Instruction manuals....28

10.2 Change notes ..............................................28

10.3 Additional sources of information.................28

Page

5 COMMISSIONING, START-UP,

OPERATION AND SHUTDOWN .....................15

5.1 Pre-commissioning procedure ...................... 15

5.2 Open impeller clearance...............................15

5.3 Direction of rotation.......................................15

5.4 Guarding .......................................................15

5.5 Priming and auxiliary supplies ...................... 15

5.6 Starting the pump..........................................15

5.7 Running the pump.........................................15

5.8 Stopping and shutdown................................. 16

5.9 Hydraulic, mechanical and electrical duty.....16

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CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

INDEX

Page

Additional sources (10.3).........................................28

Assembly (6.10).......................................................21

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

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

Certification (9) ........................................................28

Change notes (10.2)................................................28

Clearances, impeller (6.7) .......................................19

Commissioning and operation (5)............................15

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

Configurations (3.1) .................................................10

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

Design of major parts (3.3)......................................10

Direction of rotation (5.3) .........................................15

Disassembly (6.8)....................................................20

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

Dismantling (6.8, Disassembly)...............................20

Drawings (8) ............................................................26

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

Electrical connections (4.6) .....................................14

End of product life (2.5) ........................................... 10

Examination of parts (6.9) .......................................20

Fastener torques (6.6) .............................................19

Faults; causes and remedies (7)............................. 24

Foundation (4.3) ...................................................... 12

General arrangement drawing (8.3) ........................ 28

General assembly drawings (8)...............................26

Grouting (4.4)........................................................... 12

Guarding (5.4).......................................................... 16

Handling (2.2) ............................................................9

Hydraulic, mechanical and electrical duty (5.9).......16

Impeller clearance (5.2 and 6.7)

Inspection (6.2.1 and 6.2.2).....................................17

Installation (4) ..........................................................11

Lifting (2.3).................................................................9

Location (4.1)...........................................................11

Lubrication (5.1.1)....................................................15

Maintenance (6).......................................................17

Maintenance schedule (6.2).................................... 17

Motor choices ..........................................................11

Name nomenclature (3.2)........................................10

Operating limits (3.4.1) ............................................ 11

Ordering spare parts (6.3.1).................................... 18

Part assemblies (4.2)...............................................12

Parts lists (8)............................................................26

Performance (3.4)....................................................11

Piping (4.5) ..............................................................13

Pre-commissioning (5.1)..........................................15

Priming and auxiliary supplies (5.5).........................15

Protection systems (4.7)..........................................15

Re-assembly (6.10, Assembly)................................21

Page

Receipt and unpacking (2.1)......................................9

Recommended spares (6.4).....................................18

Recycling (2.5) .........................................................10

Replacement parts (6.3 and 6.4)..............................18

Running the pump (5.7) ...........................................15

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

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

Safety, protection systems (1.6 and 4.7)

Sealing arrangements (6.11)....................................22

Sectional drawings (8)..............................................26

Setting impeller clearance (6.7) ...............................19

Sound pressure level (1.9, Noise level) .....................8

Sources, additional information (10.3) .....................28

Spare parts (6.3) ......................................................18

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

Starting the pump (5.6).............................................15

Stop/start frequency (5.7.3)......................................16

Stopping and shutdown (5.8)...................................16

Storage, pump (2.4) ...................................................9

Storage, spare parts (6.3.2) .....................................18

Supplementary manuals or information sources......28

Supplementary User Instructions (10.1)...................28

Tools required (6.5)..................................................18

Torques for fasteners (6.6).......................................19

Trouble-shooting (see 7) ..........................................24

Vibration (5.7.2)........................................................16

Warning labels (1.7.2) ................................................8

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CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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 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,
utilising 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/regulations.

These instructions should 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.

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) 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 organisations. 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 authorised 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 Pump Division.

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.

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CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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 are:

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

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

This symbol indicates “hazardous and toxic fluid”
safety instructions where non-compliance 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 the cloth is damp. It is used in safety
instructions where non-compliance 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.

1.6.3 Safety action

This is a summary of conditions and actions to help
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.

NEVER DO MAINTENANCE WORK

WHEN THE UNIT IS CONNECTED TO POWER

GUARDS MUST NOT BE REMOVED WHILE

THE PUMP IS OPERATIONAL

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.

DO NOT ATTEMPT TO REMOVE THE
IMPELLER FROM THE STUBSHAFT; THEY ARE AN
INTEGRAL ITEM ON THIS PUMP.

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 80 ºC (175 ºF) or
below -5 ºC (20 ºF) in a restricted zone, or exceeds
local regulations, action as above shall be taken.

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CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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.

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

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 or motor at full or
zero flow. Pumps may be started with the valve further
open only on installations where this situation cannot
occur. The pump outlet control valve 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

1.6.4 Products used in potentially explosive
atmospheres

Measures are required to:

• Avoid excess temperature

• Prevent build up of explosive mixtures

• Prevent the generation of sparks

• Prevent leakages

• Maintain the pump to avoid hazard

The following instructions for pumps and pump units
when installed in potentially explosive atmospheres
must be followed to help ensure explosion protection.
Both electrical and non-electrical equipment must meet
the requirements of European Directive 94/9/EC.

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
driver and any additional equipment, with the necessary
CE Certificate/ 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 effects 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.

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 pump and mechanical 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 back pressure 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.

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CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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 EN13463-5)

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 ºC (104 ºF); 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 and bearings and
due to the minimum permitted flow rate is taken into
account in the temperatures stated.

Temperature

class to

EN13463-1

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)

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) *

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 when the pump is required to be
used in differently classified potentially explosive
atmospheres. In this case the user is responsible for
ensuring that the pump surface temperature does not
exceed that permitted in its actual installed location.

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 THE PUMP IS PROPERLY FILLED

AND VENTED AND DOES NOT RUN DRY
Ensure the 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 (for example liquid
detection or a power monitor).

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

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CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

1.6.4.5 Preventing sparks

To avoid the potential hazard from random
induced current generating a spark, the earth contact
on the baseplate must be used.

Avoid electrostatic charge: do not rub non-metallic

surfaces with a dry cloth; ensure cloth is damp.

Additional requirement for metallic pumps on
non-metallic baseplates

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

1.6.4.6 Preventing leakage

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.

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

1.8 Specific machine performance

For performance parameters see section 1.5, Duty
conditions. Where performance data has been

supplied separately to the purchaser these should be
obtained and retained with these User Instructions if
required.

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.

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CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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

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

Pump and

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”.

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

motor

Pump

only

Pump and

motor

Pump

only

Pump and

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

Boxes, crates, pallets or cartons may be unloaded
using fork lift vehicles or slings dependent on their
size and construction.

2.3 Lifting

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

motor

Pump

only

For estimating sound power level LWA (re 1 pW) then
add 14 dBA to the sound pressure value.

2 TRANSPORT AND STORAGE

2.1 Consignment receipt and unpacking

Immediately after receipt of the equipment it must be
checked against the delivery/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 Pump Division and
must be received in writing within one month of receipt

for this complete machine (unless so specified). Any
lifting points that can be seen are provided only for
dismantling parts for servicing. Slings, ropes and other
lifting gear should be positioned where they cannot slip
and where a balanced lift is obtained.

Before lifting the driver alone, refer to the
manufacturer’s instructions.

2.4 Storage

No specific lifting points are provided

of the equipment. Later claims cannot be accepted.
Check any crate, boxes or wrappings for any

accessories or spare parts that may be packed
separately with the equipment or attached to side
walls of the box or equipment.

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,

Store the pump in a clean, dry location

from sticking.

Pump and

motor

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CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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 requirements. If the
product contains substances that 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 that may be used in
the "seal system" or other utilities.

Make sure that hazardous substances 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 DESCRIPTION

3.1 Configurations

The pump is a modular designed centrifugal pump
that can be built to achieve almost all chemical liquid
pumping requirements. (See 3.2 and 3.3 below.)

3.2 Name nomenclature

The pump size will be engraved on the nameplate
typically as below:

80-50CPXM200

Nominal suction size in mm
Nominal discharge size in mm
Configuration – see 3.3.1 and 3.3.2 below
Nominal ISO maximum impeller diameter
The typical nomenclature above is the general guide

to the CPXM configuration description. Identify the
actual pump size and serial number from the pump
nameplate. Check that this agrees with the
applicable certification provided.

3.3 Design of major parts

3.3.1 Pump casing

The pump casing is designed with a horizontal
centreline end inlet and a vertical centreline top outlet
which makes it self venting.

For ease of maintenance, the pump is constructed so
that pipe connectors do not have to be disturbed
when internal maintenance is required.

3.3.2 Impeller/stubshaft

An open impeller with integral stubshaft is fitted.
(On the CPXRM the impeller is recessed into the
back of the casing with a wide front clearance.)

3.3.3 Adjustment stud

The adjustment stud is screwed into the end of the
motor shaft. Adjustment of impeller front clearance is
achieved by rotating the stubshaft on this stud.

3.3.4 Muff coupling

The muff coupling is investment cast in two halves
(WCB steel). Notches at 30 degree increments around
the circumference of the coupling assist in setting the
impeller face clearance.

3.3.5 Pump bearings and lubrication

The pump uses the motor bearings to support and
position the pump shaft. See motor instruction book
for lubrication details.

3.3.6 Seal housing

The seal housing has spigots between the motor
pedestal and bearing housing for optimum concentricity.

A fully confined gasket forms the seal between the
pump casing and the seal housing.

The seal housings designs provide improved
performance of mechanical seals.

The design enables one of a number of sealing
options to be fitted.

3.3.7 Shaft seal

The mechanical seal(s) attached to the stubshaft seals
the pumped liquid from the environment.

3.3.8 Driver

The driver is a close-coupled electric motor featuring
bearing location. This provides positive rotor assembly
location to limit axial movement and allow accurate
impeller setting.

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Motor manufacturer and type

TECO standard Standard motor acceptable? Yes No No Yes Yes Yes Yes

'AEBB' With alternative 2A grease? N/A Yes (1) Yes (1) N/A N/A N/A N/A

TECO Standard motor acceptable? No No No No No - -

aluminium range With drive end bearing location? Yes Yes Yes Yes Yes - -

ABB standard 'M2AA' Standard motor acceptable? Yes Yes Yes Yes Yes Yes Yes

LEROY SOMER standard 'LSB 5' Standard motor acceptable? Yes Yes Yes Yes Yes Yes Yes

ELECTRODRIVES Standard motor acceptable? No No No No Yes Yes Yes

standard 'ALPAK' With drive end bearing location? Yes (2) Yes (2) Yes (2) Yes (2) N/A N/A N/A
BROOK HANSEN Standard motor acceptable? No No No No No No No
standard 'ARGUS' With drive end bearing location? Yes Yes Yes Yes Yes Yes Yes

SIEMENS Standard motor acceptable? No No No No Yes Yes Yes

standard 'LA' With drive end bearing location? Yes Yes Yes Yes N/A N/A N/A

VEM Standard motor acceptable? No No No No No No No

Standard 'K21R' With drive end bearing location? Yes Yes Yes Yes Yes Yes Yes

GAMAK Standard motor acceptable? No No No No No No No

Standard 'AGM'/'AG' With drive end bearing location? Yes Yes Yes Yes Yes Yes Yes

WEG 'W21' cast iron Standard motor acceptable? Yes Yes Yes Yes Yes Yes Yes

Notes: N/A = Not applicable.

1) The standard grease used on TECO motor frames 90, 100 and 112 is unsuitable as it does not generate sufficient lubricating film
thickness with the relatively low viscosity 5K grease. The alternative grease 2A is acceptable and must be specified.

2) Standard ALPAK motor frames 80 to 132 inclusive have bearings at the non-drive end with a special retention device. This device is not
acceptable for use with the CPXM unit. The ALPAK machine with bearing cap locating the drive end bearing is acceptable.

Flange mounted Foot/flange mounted

80 90 100/112 132 160 180 200

Motor frame size

A wide range of electric motors have been tested and
approved for use with CPXM units. The table lists
acceptable motors and indicates whether the
standard motors are approved or if a modification is
required.

The position of the terminal box can be changed by
rotating the complete motor. To do this on motor frames
80 and 90, remove the fasteners from the motor flange,
rotate the motor and re-fit the fasteners. For motor
frames 100 and above, with multi-positioned feet, also
unbolt the feet and refit in the appropriate position.

3.3.9 Accessories

Accessories may be fitted when specified by the
customer.

3.4.1 Operating limits

3.4.1.1 Temperature limits of working fluids

Horizontal units: -20 ºC (-4 ºF) to +160 ºC (320 ºF).
Vertical units: -20 ºC (-4 ºF) to +120 ºC (248 ºF).
(These limits subject to approved mechanical seal
area design.)

3.4.1.2 Ambient temperature

These units are normally fitted with TEFC motors
suitable for an ambient temperature up to 40 ºC
(104 ºF). Specific pumps may be fitted with motors to
suit client's requirements with other ambient
temperature limits - see motor nameplate for details.

4 INSTALLATION

3.4 Performance and operating limits

This product has been selected to meet the
specifications of the purchase order. See section 1.5.

The following data is included as additional
information to help with your installation. It is typical,
and factors such as temperature, materials, and seal
type may influence this data. If required, a definitive
statement for your particular application can be
obtained from Flowserve.

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

potentially explosive atmospheres.

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. Refer
to the general arrangement drawing for the pump set.

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Various pump positions are possible. (See diagram.)

It is possible for the pump/motor assembly to be
supported by the connecting pipework if it is suitably
stable and rigid. For hot, damp environments, the
preferred orientation is horizontal.

4.2 Part assemblies

These pumps are not normally supplied in part
assemblies but special accessories such as loose
orifice plates are supplied loose. Ensure these are
incorporated in the final installation.

4.3 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 and 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.

Where a baseplate is used, it should be mounted onto
a firm foundation, either an appropriate thickness of
quality concrete or sturdy steel framework. It should
be packed or shimmed underneath to avoid distortion
when pulled down onto the surface of the foundation.

Where supplied, install the baseplate onto packing
pieces evenly spaced and adjacent to foundation bolts.

Level with shims between baseplate and packing
pieces.

If the pump is being directly mounted onto a plinth, it
is only necessary to bolt down the pump foot.

Units fitted with 80 or 90 frame size motors require
bolting down at the pump end only. It is recommended
that bolts (not studs) are used to hold down the pump
feet to permit easy removal from the pipework.

Do not distort the pump when tightening the holding
down bolts. Use shims under the motor feet as
necessary.

All units should be securely bolted down at the pump
casing. In addition, the motor (frames 100 and
above) should be supported under its feet with metal
packing strips.

It is not necessary to bolt the motor to the foundation.
However, to simplify maintenance, it is important that
any packing strips are bolted to the motor feet. This
is so that the motor, complete with packing strips, can
be slipped back along its foundation to gain access to
the rotating element. It is important to bolt down the
pump casing first. The motor should then be packed
or shimmed to support its weight, but it should not put
any undue strain onto the pump casing. (It is not
necessary to support frame 80 and 90 motors.)

These close coupled pumps feature a
back pull-out design. This means that when correctly
installed, the rotating element can be withdrawn from
the casing without disturbing the system pipework.
The use of grouted-in studs to secure the motor feet
prevents back pull-out and will make maintenance
more difficult and time consuming. The procedures in
the above paragraphs should be followed in order to
obtain the maximum benefit from the pump design.

4.4 Grouting

Where applicable, grout in the foundation bolts.
After adding pipework connections the baseplate, if

used, should be grouted in accordance with good
engineering practice. Folded steel baseplates should
be grouted to locate their packing pieces. If in any
doubt please contact your nearest Flowserve service
centre for advice.

Grouting provides solid contact between the pump unit
and foundation, prevents lateral movement of vibrating
equipment and dampens resonant vibrations.

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4.5 Piping

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 pipework

Never use pump as a support for
piping.

Take into account the available NPSH which must be
higher than the required NPSH of the pump.

In order to minimize friction losses and hydraulic
noise in the pipework it is good practice to choose
pipework that is one or two sizes larger than the
pump suction and discharge. Typically main
pipework velocities should not exceed 2 m/s (6 ft/sec)
suction and 3 m/s (9 ft/sec) on the discharge.

Maximum forces and moments allowed on the pump
flanges vary with the pump size and type. To
minimize these forces and moments that may, if
excessive, cause misalignment, hot bearings, worn
couplings, vibration and the possible failure of the
pump casing, the following points should be strictly
followed:

• Prevent excessive external pipe load

• Never draw piping into place by applying force to

pump flange connections

• Do not mount expansion joints so that their force,

due to internal pressure, acts on the pump flange

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

a) The inlet pipe should be one or two sizes larger

than the pump inlet bore and pipe bends should
be as large a radius as possible.

b) On suction lift the piping should be inclined up

towards the pump inlet with eccentric reducers
incorporated to prevent air locks.

c) On positive suction, the inlet piping must have a

constant fall towards the pump.

d) The pipe next to the pump should be the same

diameter as the pump suction and have a
minimum of two pipe diameters of straight section
between the elbow and the pump inlet flange.
Where the NPSH margin is not large, it is

recommended that the pipe straight is 5 to 10
pipe diameter. (See section 10.3, Reference 1.)
Inlet strainers, when used, should have a net
'free area' of at least three times the inlet pipe
area.

e) Fitting isolation and non-return valves will allow

easier maintenance.

f) Never throttle pump on suction side and never

place a valve directly on the pump inlet nozzle.

4.5.3 Discharge piping

a) A non-return valve should be located in the

discharge pipework to protect the pump from
excessive back pressure and hence reverse
rotation when the unit is stopped.

b) Fitting an isolation valve will allow easier

maintenance.

4.5.4 Flange loads

The permissible flange loading is dependent on a
number of factors such as dimensions, flange rating,
pressure, temperature, material, pump configuration,
etc. The recommendations contained in the section on
pipework connections should be followed to eliminate
these loads.

When requested the permissible flange loading will
have been supplied separately to the purchaser and
should be obtained and retained with this manual. If in
doubt contact Flowserve for information.

4.5.5 Auxiliary piping

The connections that are to be piped
up will have been fitted with protective metal or
plastic plugs which will need to be removed.

4.5.5.1 Pumps fitted with mechanical seals

The conical design of the single internal seal housing
provides excellent liquid circulation around the seal and
will not normally require a separate flush.

Single seals requiring re-circulation will normally be
provided with the auxiliary piping from pump casing
already fitted.

Flowserve seal connections are designated as
follows:
Q - quench
F - flush
D - drain outlet
BI - barrier fluid in (double seals)
BO - barrier fluid out (double seals)
H - heating jacket

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Seal housings/covers having an auxiliary quench
connection, require connection to a suitable source of
liquid flow, low pressure steam or static pressure from
a header tank. Recommended pressure is 0.35 bar
(5 psi) or less. Check General arrangement drawing.

Double seals require a barrier liquid between the
seals, compatible with the pumped liquid.

With back-to-back double seals, the barrier liquid
should be at a minimum pressure of 1 bar (14.5 psi)
above the maximum pressure on the pump side of
the inner seal. (See chart.) The barrier liquid
pressure must not exceed limitations of the seal on
the atmospheric side. For toxic service the barrier
liquid supply and discharge must be in a safe area.

Special seals may require modification to auxiliary
piping described above. Consult Flowserve if unsure
of correct method or arrangement.

For pumping hot liquids, to avoid seal damage, it is
recommended that any external flush/cooling supply
be continued after stopping the pump.

Seal chamber pressure v generated head:

Mechanical seal

Use seal manufacturer's limits or ask seal

manufacturer to verify seal pressure

4.5.5.2 Pumps fitted with heating jackets

Connect the heating pipes from the site supply. The top
connection should be used as the outlet to ensure
complete filling/venting of the annulus with heating
liquids. Steam is usually in at the top, out at the bottom.

4.5.5 Final checks

After connecting piping to the pump, rotate the shaft
several times by applying gentle pressure on the motor
fan to ensure there is no binding and all parts are free.

Check the tightness of all bolts in the suction and
discharge pipework. Check also the tightness of all
foundation bolts.

4.6 Electrical connections

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

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.

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
any 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 must

be fitted.

Notes:

a) Total seal pressure is equal to pressure at seal plus suction

pressure.

b) For pumped liquid viscosities greater than 440 Centistokes

multiply the generated pressure by 1.25 for 125, 160 and 200
size pumps and by 2.0 for larger sizes.

c) Differential pressure in bar equals head in metres multiplied by

specific gravity all divided by 10.19.

d) Ensure to check the seal minimum and maximum seal

pressure limits are not exceeded and the pressure is agreed
with Flowserve.

If not supplied pre-wired to the pump unit, the
controller/starter electrical details will also be supplied
within the controller/starter.

For electrical details on pump sets with controllers
see the separate wiring diagram.

See section 5.4, Direction of rotation

before connecting the motor to the electrical supply.

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4.7 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 any 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.

5 COMMISSIONING, START-UP,
OPERATION AND SHUTDOWN

These operations must be carried

out by fully qualified personnel.

5.1 Pre-commissioning procedure

5.1.1 Lubrication

Electric motors are supplied pre-greased and are
normally sealed for life. If in doubt, refer to motor
instruction manual.

5.2 Open impeller clearance

The impeller clearance is set in the factory. This may
require adjustment because of piping attachment or
increase in temperatures. For setting instructions see
section 6.7, Setting impeller clearance.

5.3 Direction of rotation

Briefly run or jog the motor and observe
the direction of rotation of the coupling or motor fan.
Ensure the pump is given the same direction of rotation
as the pump direction arrow on the bracket.

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.

5.4 Guarding

Guarding is supplied fitted to the pump set. If
this has been removed or disturbed ensure that all the
protective guards are securely refitted.

5.5 Priming and auxiliary supplies

5.5.1 Filling and priming

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

Priming may be carried out with an ejector, vacuum
pump interceptor or other equipment, or by flooding
from the inlet source.

When in service, pumps using inlet pipes with foot
valves may be primed by passing liquid back from the
outlet pipe through the pump.

5.5.2 Auxiliary supplies

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

5.6 Starting the pump

a) Ensure flushing and or heating

liquid supplies are turned ON, before starting pump.
b) CLOSE the outlet valve.
c) OPEN all inlet valves.
d) Prime the pump.
e) Start motor and check the outlet pressure.
f) If the pressure is satisfactory, slowly OPEN the

outlet valve.
g) Do not run the pump with the outlet

valve closed for a period longer than 30 seconds.
h) If NO pressure, or LOW pressure, STOP the

pump. Refer to section 7, Faults; causes and

remedies for fault diagnosis.

5.7 Running the pump

5.7.1 Pumps fitted with mechanical seal

Mechanical seals require no adjustment. Any slight
initial leakage will stop when the seal is run in.

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Before pumping dirty liquids it is advisable, if possible, to
run the pump in using clean liquid to safeguard the seal
face.

External flush or quench should be
started before the pump is run and allowed to flow for a
period after the pump has stopped.

Never run a mechanical seal dry,
even for a short time.

5.7.2 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 the pump in the fully commissioned as
new condition. 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 pumps

≤≤≤≤ 15 kW mm/sec

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

≤ 3.0 (0.12) ≤ 4.5 (0.18)
≤ 3.8 (0.15) ≤ 5.6 (0.22)
≤ 6.0 (0.24) ≤ 9.0 (0.35)

> 15 kW

mm/sec (in./sec)

r.m.s.

5.7.3 Stop/start frequency

Pump sets are normally suitable for the number of
equally spaced stop/starts per hour shown in the
table below. Check 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

Above 90 (120) 6

Maximum stop/starts

per hour

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

5.8 Stopping and shutdown

a) Close the outlet valve, but ensure

that the pump runs in this condition for no more

than a few seconds.
b) Stop the pump.
c) Switch off flushing and or heating liquid supplies

at a time appropriate to the process.
d) For prolonged shut-downs and

especially when ambient temperatures are likely

to drop below freezing point, the pump and any

cooling and flushing arrangements must be

drained or otherwise protected.

5.9 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.

5.9.1 Specific gravity (SG)

Pump capacity and total head in metres (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 over-pressurize
the pump.

5.9.2 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.

5.9.3 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.

5.9.4 Net positive suction head (NPSHA)

NPSH available (NPSHA) is a measure of the head
available in the pumped liquid, above its vapour
pressure, at the pump suction branch.

NPSH required (NPSHR) is a measure of the head
required in the pumped liquid, above its vapour
pressure, to prevent the pump from cavitating. 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.

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If in doubt please consult your nearest Flowserve
office for advice and details of the minimum allowable
margin for your application.

5.9.5 Pumped flow

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

6 MAINTENANCE

6.1 General

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 5.8.

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 guard rails 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, to include the following:
a) Any auxiliary systems installed must be monitored,

if necessary, to ensure they function correctly.

b) Check for any leaks from gaskets and seals.

The correct functioning of the shaft seal must be
checked regularly.

c) Check that the duty condition is in the safe

operating range for the pump.

d) Check vibration, noise level and surface temperature

at the bearings to confirm satisfactory operation.

e) Check dirt and dust is removed from areas around

close clearances, bearing housings and motors.

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.

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.

6.2.1 Routine inspection (daily/weekly)

The following checks should be made
and the appropriate action taken to remedy any
deviations:
a) Check operating behaviour. 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.

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c) Check that shaft seal leaks are within acceptable

limits.

d) Check any auxiliary supplies eg heating/cooling

(if fitted) are functioning correctly.

Refer to the manuals of any associated

equipment for routine checks needed.

6.2.2 Periodic inspection (six monthly)

a) Check foundation bolts for

security of attachment and corrosion.

b) Refer to the manuals of any associated

equipment for periodic checks needed.

6.2.3 Mechanical seals

When leakage becomes unacceptable the seal will
need replacement.

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 – taken from section 8.

4) Part number – taken from section 8.

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 the original
design specification (modification or use of a non­standard 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

Part no. Designation

For start up purposes

Pump casing

4590

gasket

2 to 4 years operation

2200

7120

9906/04
9951/02 Adjustment stud

4200 Mechanical seals
4300 Lip seal *

4590
8100 Motor

4200 Mechanical seals

9906/04
9951/02 Adjustment stud

7120

* Where fitted.

Integral stubshaft
and impeller

Muff coupling
(halves)

Coupling grub
screw

Pump casing
gasket

Optional for start up purposes

Coupling grub
screw

Muff coupling
(halves)

Number of pumps

(including stand-by)

2 3 4 5 6/7 8/9 10(+)

4 6 8 9 12 150%

1 2 3 30%

2 4 20%

1 2 3 50%

1 2 3 50%
1 2 3 30%
4 6 8 9 10 100%

4 6 8 9 12 150%

- 1 2

1 2 3 30%

1 2 3 50%

1 2 3 50%

2 4 20%

6.5 Tools required

A typical range of tools that will be required to
maintain these pumps is listed below.

Readily available in standard tool kits, and dependent
on pump size:

• Open ended spanners (wrenches) to suit up to
M 20 screws/nuts

• Socket spanners (wrenches), up to M 20 screws

• Allen keys, up to 10 mm (A/F)

• Range of screwdrivers

• Soft mallet

More specialized equipment:

• Bearing pullers

• Bearing induction heater

• Dial test indicator

• C-spanner (wrench) - for removing shaft nut.

(If difficulties in sourcing are encountered, consult
Flowserve.)

• Tapered seal fitting tools for rubber bellows seals

Page 18 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

6.6 Fastener torques

Screw position Screw size Torque Nm (lbf·ft)

M8

Casing and

seal cover

Muff coupling

Cartridge seal sleeve

(where applicable)
* Where a torque wrench is unavailable, slightly tighten the
setscrews to centralize the cartridge seal, then tighten with a T-bar
until a torsional twist between 60 and 90 degrees is achieved. The
torque applied will be approximate to that recommended.

M10
M12
M16
M20

M8

M10

M5
M8

16 (12)
25 (18)
35 (26)
80 (59)

130 (96)

30 (22)
58 (43)

5.5 (7) *

16 (22) *

Non-metalic gaskets incur creep
relaxation - before commissioning the pump check
and retighten fasteners to tightening torques stated.

6.7 Setting impeller clearance

This procedure may be required after the pump has
been dismantled or a different clearance is required.

Before carrying out this procedure ensure that the
mechanical seal(s) fitted can tolerate a change in
their axial setting, otherwise it will be necessary to
dismantle the unit and reset the seal axial position
after adjusting the impeller clearance.

If a cartridge seal is fitted loosen it from the shaft.

6.7.1 Setting CPXM impeller clearance

a) Disconnect the muff coupling and clean up the

bores.

b) Clean motor shaft and stubshaft and deburr

where necessary.

c) Replace muff coupling, ensuring that the

grubscrew locates in the stubshaft.

d) The motor end coupling bolts should be slacker

than the pump end coupling bolts so that the
coupling and stubshaft can be rotated relative to
the motor shaft.

e) The motor shaft should be prevented from

rotating by using a C-spanner located in the
keyway (where possible) or by locking the fan
end of the motor.

f) Rotate the coupling until the impeller contacts the

pump casing. This is the zero clearance position
or datum for setting the front clearance.

g) Mark the bracket with a pen and, whilst preventing

the motor shaft rotating, turn the coupling in the
opposite direction by the recommended number of
notches as indicated in the table. For the
remaining steps, take care not to rotate the pump
shaft relative to the motor shaft.

Clearance settings:

diameter

210 mm

315 mm

80 90 100 112 132 160 180 200

Clearance

(mm)

Notches 7 7 7 7 7 8 8 8

Clearance

(mm)

Notches 8 8 8 8 8 9 9 9

0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 Up to

0.4 0.4 0.4 0.4 0.4 0.4 0.4 0.4 211 to

Motor frame size Impeller

h) Carefully loosen and back off the grubscrew and

tighten the coupling bolts, ensuring that the gap
is equal between the coupling halves.

i) Torque the screws to the specified values:

M 8 - 30 Nm (22 lbf•ft)

M 10 - 58 Nm (43 lbf•ft)
j) Check that the shaft can turn freely without binding.
k) If a cartridge seal is fitted it should be reset at this

point.

6.7.2 Setting CPXRM impeller clearance

The impeller does not have a fine front clearance
setting and adjustment of the impeller is not normally
required.
a) Disconnect the muff coupling and clean up the

bores.

b) Clean motor shaft and stubshaft and deburr

where necessary.

c) Replace muff coupling, ensuring that the

grubscrew locates in the stubshaft.

d) The motor end coupling bolts should be slacker

than the pump end coupling bolts so that the
coupling and stubshaft can be rotated relative to
the motor shaft.

e) The motor shaft should be prevented from rotating

by using a C-spanner located in the keyway (where
possible) or by locking the fan end of the motor.

f) With the casing removed, rotate the coupling until

the back clearance is 1.5 to 2 mm (0.06 to 0.08 in.)
as illustrated. This is the setting position and, for
the remaining steps, take care not to rotate the
pump shaft relative to the motor shaft.

Page 19 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

g) Carefully loosen and back off the grubscrew and

tighten the coupling bolts, ensuring that the gap
is equal between the coupling halves.

h) Torque the screws to the specified values:

M 8 - 30 Nm (22 lbf•ft)
M 10 - 58 Nm (43 lbf•ft)

i) If a cartridge seal is fitted it should be reset at this

point.

6.8 Disassembly

Refer to Safety section 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. See section 8, Parts lists and drawings.

6.8.1 General

a) Close suction and discharge valves and drain

liquid from the pump.

b) Remove screws from pump casing and pull motor

complete with rotating assembly from back of
pump casing, which will be left connected in

position in the pipework.
c) Unclip the coupling guards.
d) Take out the muff coupling screws and remove

coupling.

6.8.2 Pumps with single seals

a) Prevent the motor shaft from rotating.
b) Carefully rotate the impeller in an anti-clockwise

rotation, whilst supporting the impeller, until it

releases from the adjustment stud. Take care

not to damage the seal.
c) Withdraw the impeller/stubshaft assembly,

complete with mechanical seal, from the seal

housing.
d) Release the tension in the mechanical seal. The

seal manufacturer's instructions should be

followed for dismantling and assembling the seal.

e) Remove seal housing bolts and withdraw the seal

housing from the bracket.

6.8.3 Pumps with double mechanical seals

a) Remove the nuts retaining the seal housing to

the bracket.

b) Carefully rotate the impeller in an anti-clockwise

direction whilst supporting the impeller and seal
housing. The integral impeller and stub shaft
combined with the seal housing will release from
the unit as a sub-assembly. (Large pump sizes
have a tapped hole for fitting a lifting eye to assist
with this procedure.)

c) Remove the nuts from the seal cover to gain

access to the seals. Release the tension in the
mechanical seals.

d) The seal manufacturer's instructions should be

followed for dismantling and assembling the seal.

e) The mounting bracket can now be removed from

the motor after first removing the fixing screws.

f) The adjustment stud in the motor shaft can be

removed using two M 8 nuts.

6.9 Examination of parts

Used parts must be inspected before
assembly to ensure the pump will subsequently run
properly. In particular, fault diagnosis is essential to
enhance pump and plant reliability.

6.9.1 Casing, seal housing and integral impeller/
stubshaft assembly

Inspect for excessive wear, pitting, corrosion, erosion
or damage and any sealing surface irregularities.
Replace as necessary.

6.9.2 Integral impeller/stubshaft

Replace if the shaft is grooved or pitted or if the
impeller vanes are eroded or damaged.

6.9.3 Gaskets

After dismantling, discard and replace. (If the pump
seal arrangement has a lip seal, it should be replaced
at overhaul.)

6.9.4 Motor

Check the motor shaft for free rotation and absence
of bearing noise or shaft 'float'. If necessary, have
the motor serviced by a specialist or replace with a
Flowserve approved type.

Page 20 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

6.10 Assembly

To assemble the pump consult the sectional
drawings. See section 8, Parts lists and drawings.

Ensure threads, gasket and O-ring mating faces are
clean. Apply thread sealant to non-face sealing pipe
thread fittings.

6.10.1 General

a) The motor shaft keyway is not used but remove

any burrs from the edge of the keyway, the motor
and pump shafts and the coupling.

b) Screw the adjustment stud into the motor shaft

and tighten with the two M 8 nuts or a stud box.

c) Locate the bracket on the motor spigot and

tighten the screws (or studs and nuts).

d) Whilst re-assembling, use new joints/gaskets and

ensure they are in their correct positions.

e) Small amounts of grease may be used to hold

the joints in position during assembly.

6.10.2 Seal housing and seal assembly

a) Extreme cleanliness is required.
b) The sealing faces and shaft surface must be free

from scratches or other damage.

c) Refer to Seal arrangement sections for seal

diagrams.

6.10.3 Impeller assembly and setting - single seal

a) Carefully press the stationary seat into the

mechanical seal housing cover, ensuring the
seating ring is not deformed.

b) Where an anti-rotation pin is fitted, ensure that

correct engagement with the slot is achieved.

c) Refer to seal manufacturer's instructions to

position the mechanical seal rotating elements.
Tighten any drive screws in the seal drive collar.

d) Fit the seal housing into the bracket and tighten

all fasteners.

e) Apply anti-seizing compound to the adjustment

stud. Carefully, fit the stubshaft (with seal in
position) through the centre of the seal housing
and locate on the adjustment stud.

f) Rotate the impeller until the back clearance is

approximately 1 mm (0.04 in.).

g) Fit the casing gasket and pump casing and

tighten all casing fasteners.

h) Refer to section 6.7, Setting impeller clearance

for setting dimensions and coupling fitting
instructions.

i) Check that the shaft can turn freely without binding.

6.10.4 Impeller assembly and setting - double seal

For double seal arrangements, a sub assembly of the
integral impeller/stubshaft, seal housing, seal cover
and seals is required.
a) Fit the impeller shaft through the seal housing.
b) Refer to seal manufacturer's instructions to position

the mechanical seal rotating elements. The short
outboard seal is easier to assemble with a special
tapered tool fitted to the end of the shaft.

c) When the seals are in position, fit the seal cover

and tighten all fasteners.

d) Whilst supporting the seal housing, locate the

stubshaft on the adjustment stud to ensure
engagement. (Large pump sizes have a tapped
hole for fitting a lifting eye to assist with this
procedure.)

e) Rotate the impeller until the back clearance is

approximately 1 mm (0.04 in.).

f) Long studs may be used initially to locate the

seal housing and support the weight whilst the

impeller is rotated.
g) Ensure all flush connections are reconnected.
h) Refer to section 6.7, Setting impeller clearance

for setting dimensions and coupling fitting

instructions.
i) Fit the casing gasket and pump casing and

tighten all casing fasteners.
j) Check that the shaft can turn freely without binding.

6.10.5 Impeller assembly and setting - cartridge
seal

a) Loosely fit the cartridge seal to the seal housing,

then fit and tighten onto the bracket.
b) Apply anti-seizing compound to the adjustment

stud.
c) Insert the impeller shaft and screw on until the

gap between the impeller and seal housing is

approximately 1 mm (0.04 in.).
d) Fit the casing gasket and pump casing and

tighten all casing fasteners.
e) Refer to section 6.7, Setting impeller clearance for

setting dimensions and coupling fitting instructions.
f) To set, or reset, a cartridge seal having a PTFE

setting ring-throttle and no separate setting clips,

finger tighten the seal cover studs nuts, then fully

torque up the sleeve screws.
g) Torque up the seal cover studs nuts.

Page 21 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

6.11 Sealing arrangements

The following section shows details of the seal
arrangements. The dimensions provided are for non­step balanced mechanical seals conforming to
EN 12757 L1K and L1N. Contact your nearest
Flowserve sales office or service centre if you require
further information, such as a mechanical seal
dimensional drawing, or are unsure of the specific
arrangement supplied. Refer also to section 4.5.5,
Auxiliary piping.

6.11.1 Single seal types

6.11.1a Single seal

Q - Rp ¼ in. quench
D - Rp ¼ in. drain
F - Rp ¼ in. flush

Pump size

125 25.5 13 - ­160 25.5 13 36 21

65-160 25.5 13 36 21

100-160 25.5 13 36 21

200 25.5 13 36 21
250 - - 36 21
315 - - 36 21

Setting dimension (mm)

Stubshaft Ø 35 Stubshaft Ø 45

X Y X Y

6.11.2 Single seal types with external lip seal

6.11.2a Single seal with external lip seal

Hard sleeve setting dimension 'z' = distance from
stubshaft end to position of sleeve as shown

6.11.1b Single seal with external neck bush

Q - Rp ¼ in. quench
D - Rp ¼ in. drain
F - Rp ¼ in. flush

6.11.1c Single seal variants

1) Self setting collar.

2) Separate seal drive collar set to dimension 'X'.

3) Integral seal drive collar with screws set to
dimension 'X'.

L1K and L1N are seal lengths defined within seal
standard EN 12757.

Q - Rp ¼ in. quench
D - Rp ¼ in. drain
F - Rp ¼ in. flush

6.11.2b Single seal with external lip seal and
quench pot

F - Rp ¼ in. flush
D - Rp ¼ in. drain

Page 22 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

6.11.2c Single seal with external lip seal variants

1) Self setting collar.

2) Separate seal drive collar set to dimension 'X'.

3) Integral seal drive collar with screws set to
dimension 'X’.'

L1K and L1N are seal lengths defined within seal
standard EN 12757.

Setting dimension (mm)

Pump size

125 25.5 13 50 - - ­160 25.5 13 50 36 21 68

65-160 25.5 13 50 36 21 68

100-160 25.5 13 50 36 21 68

200 25.5 13 50 36 21 68
250 - - - 36 21 68
315 - - - 36 21 68

Stubshaft Ø 35 Stubshaft Ø 45

X Y Z X Y Z

6.11.3 Double seal types

6.11.3a Double back-to-back seal with Flowserve

eccentric pumping annulus circulation (limited to
a short T2100 outboard and a EN 12757 'K' type
rubber bellow seal inboard)

6.11.4 Cartridge seal types

6.11.4a Compact dual or gas buffer/barrier
cartridge seal

A 35 mm 45 mm
B 61.5 mm 73 mm
C 81 mm +0.0/-0.05 mm 97 mm +0.0/-0.05 mm
D 55 mm 60 mm
E 34 mm 34 mm

F M 10 M 12
G 98 mm 117 mm
H 130 mm 164 mm

Stubshaft A Stubshaft B

6.11.4b Compact cartridge seal

BO - Rp ¼ in. barrier liquid outlet

BI - Rp ¼ in. barrier liquid inlet

Stubshaft

A 35 mm 62 mm -0.05/+0.0 mm 51 mm -0.0/+0.2 mm 54 mm 33 mm 33 mm M 10 86 mm 130 mm 76 mm

B & C 45 mm 74 mm -0.05/+0.0 mm 70 mm -0.0/+0.2 mm 60 mm 36.5 mm 39.5 mm M 12 100 mm 164 mm 86 mm

A B B option C D E F G H max J

Page 23 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

7 FAULTS; CAUSES AND REMEDIES

FAULT SYMPTOM
Pump over hea ts and seizes

Bearings have short life

⇓⇓⇓⇓

⇓⇓⇓⇓

Pump vibrate s or is noisy

⇓⇓⇓⇓

⇓⇓⇓⇓

Mechanical seal has short li fe

⇓⇓⇓⇓

⇓⇓⇓⇓

Mechanical seal l eaks excessively

⇓⇓⇓⇓







⇓⇓⇓⇓

Pump requires exc essive power

⇓⇓⇓⇓

⇓⇓⇓⇓

Pump loses prime after starting

⇓⇓⇓⇓

⇓⇓⇓⇓

⇓⇓⇓⇓

⇓⇓⇓⇓
















































 























  

















Insuffici ent pressur e dev eloped

Insuffici ent capacit y deli ver ed

⇓⇓⇓⇓

⇓⇓⇓⇓

Pump does not deliver liq uid

⇓⇓⇓⇓

⇓⇓⇓⇓

⇓⇓⇓⇓

⇓⇓⇓⇓

PROBABLE CAUSES POSSIBLE REMEDIES



Pump not primed or filled with liquid.



Pump or suction pipe not completely filled with

 








  



  

 

liquid.

 

Suction lift too high.



Insufficient margin between suction pressure and

 

vapour pressure.
Excessive amount of air or gas in liquid. Check and purge pipes and system.

 

Air or vapour pocket in suction line. Check suction line design for vapour pockets.





Air leaks into suction line. Check suction pipe is airtight.



Air leaks into pump through mechanical seal,



sleeve joints, casing joint or pipe lugs.



Foot valve too small. Investigate replacing the foot valve.





Foot valve partially clogged. Clean foot valve.



 

Inlet of suction pipe insufficiently submerged. Check out system design.



Speed too low. CONSULT FLOWSERVE.
Speed too high. CONSULT FLOWSERVE.
Total head of system higher than differential head

of pump.
Total head of system lower than pump design head.
Specific gravity of liquid different from design.
Viscosity of liquid differs from that for which

designed.
Operation at very low capacity.

Operation at high capacity.

A. System troubles

Check complete filling. Vent and/or prime.

Check NPSHA > NPSHR, proper submergence,
losses at strainers and fittings.

Check and replace faulty parts.
CONSULT FLOWSERVE.

Check system losses.
Remedy or CONSULT FLOWSERVE.

Check and CONSULT FLOWSERVE.

Measure value and check minimum permitted.
Remedy or CONSULT FLOWSERVE.

Measure value and check maximum permitted.
Remedy or CONSULT FLOWSERVE.

B. Mechanical troubles

     



    

Misalignment due to pipe strain.

Improperly designed foundation.

Shaft bent.

Check the flange connections and eliminate strains
using elastic couplings or a method permitted.

Check setting of baseplate: tighten, adjust, grout
base as required.

Check shaft runouts are within acceptable values.
CONSULT FLOWSERVE.

Page 24 of 32 flowserve.com

FAULT SYMPTOM
Pump over hea ts and seizes

Bearings have short life

⇓⇓⇓⇓

⇓⇓⇓⇓

Pump vibrate s or is noisy

⇓⇓⇓⇓

⇓⇓⇓⇓

Mechanical seal has short li fe

⇓⇓⇓⇓

⇓⇓⇓⇓

Mechanical seal l eaks excessively

⇓⇓⇓⇓







 

⇓⇓⇓⇓

Pump requires exc essive power

⇓⇓⇓⇓

⇓⇓⇓⇓

Pump loses prime after starting

⇓⇓⇓⇓

⇓⇓⇓⇓

Insuffici ent pressur e dev eloped

⇓⇓⇓⇓

⇓⇓⇓⇓

Insuffici ent capacit y deli ver ed

⇓⇓⇓⇓

⇓⇓⇓⇓

Pump does not deliver liq uid

⇓⇓⇓⇓

⇓⇓⇓⇓

⇓⇓⇓⇓

⇓⇓⇓⇓

PROBABLE CAUSES POSSIBLE REMEDIES







 



  

  

  



 

 

 

 

Rotating part rubbing on stationary part internally. Check and CONSULT FLOWSERVE, if necessary.
Bearings worn Replace bearings.

Impeller damaged or eroded.
Stubshaft worn or scored or running off centre. Check and renew defective parts.

Mechanical seal improperly installed.
Incorrect type of mechanical seal for operating

conditions.
Shaft running off centre because of worn bearings

or misalignment.
Impeller out of balance resulting in vibration.

Abrasive solids in liquid pumped.
Internal misalignment of parts preventing seal ring

and seat from mating properly.
Mechanical seal was run dry.

Internal misalignment due to improper repairs
causing impeller to rub.

Excessive thrust caused by a mechanical failure
inside the pump.

Damaged bearings due to contamination.

  

    

    

    

  

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

Replace or CONSULT FLOWSERVE for improved
material selection.

Check alignment of faces or damaged parts and
assembly method used.

CONSULT FLOWSERVE.
Check misalignment and correct if necessary. If

alignment satisfactory check bearings for excessive
wear.

Check and CONSULT FLOWSERVE.

Check mechanical seal condition and source of dry
running and repair.

Check method of assembly, possible damage or
state of cleanliness during assembly.
Remedy or CONSULT FLOWSERVE, if necessary.

Check wear condition of impeller, its clearances and
liquid passages.

Check contamination source and replace damaged
bearings.

C. Motor electrical problems










 






 























 



Wrong direction of rotation. Reverse 2 phases at motor terminal box.



Motor running on 2 phases only. Check supply and fuses.





Motor running too slow. Check motor terminal box connections and voltage.



Motor incorrectly wired.

Check motor terminal box connections, refer to
motor instructions.

Page 25 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

6570.3

6570.

2 3160

6570.

1 7120

8100

4590

1100

2200

4200

6572.1

6572.2

6570.4

1220

6580

8 PARTS LISTS AND DRAWINGS

8.1 CPXM

Item Description

1100 Casing
2200 Impeller
3160 Motor pedestal
4200 Mechanical seal
1220 Cover
4590 Gasket
7120 Muff coupling, split
8100 Motor

6570.1 Screw

6570.2 Screw

6570.3 Screw

6570.4 Screw
6580 Nut

6572.1 Stud

6572.2 Stud
7450 Guard
2510 Distance ring

Page 26 of 32 flowserve.com

8.2 CPXRM

8100

6570.2

6570.3

3160

7120

6570.1

1100

4590

2510.2

4200

2200

2510.1

6572.1

6580

1220

6570.4

6572.2

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

Item Description

1100 Casing
2200 Impeller

2510.1 Distance ring

2510.2 Distance ring
3160 Motor pedestal
4200 Mechanical seal
1220 Cover
4590 Gasket
6569 Plug
7120 Muff coupling, split
8100 Motor

6570.1 Screw

6570.2 Screw

6570.3 Screw

6570.4 Screw
6580 Nut

6572.1 Stud

6572.2 Stud
7450 Guard

Page 27 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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 Instruction
manuals

Supplementary instruction determined from the contract
requirements for inclusion into User Instructions such as
for a driver, instrumentation, controller, sub-driver, seals,
sealant system, mounting component etc are included
under this section. If further copies of these are
required they should be obtained from the purchaser for
retention with these User Instructions.

Where any pre-printed set of User Instructions are
used, and satisfactory quality can be maintained only
by avoiding copying these, they are included at the
end of these User Instructions such as within a
standard clear polymer software protection envelope.

10.2 Change notes

If any changes, agreed with Flowserve Pump
Division, 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 Rotordynamic Pumps: a reference guide,
Europump Guide No. 1, Europump & 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 28 of 32 flowserve.com

Notes:

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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Notes:

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

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Notes:

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

Page 31 of 32 flowserve.com

CPXM and CPXRM USER INSTRUCTIONS ENGLISH 71569101 10-08

Your Flowserve factory contact:

Flowserve Pumps
Flowserve GB Limited
PO Box 17, Newark
Notts NG24 3EN
United Kingdom

Telephone (24 hours) [phone]
Sales & Admin Fax [phone]
Repair & Service Fax [phone]

E.mail [e-mail]

Your local Flowserve representative:

Flowserve Pompes
Route d’Angers
72234 ARNAGE
BP 305
72001 Le Mans Cedex
France

Telephone (24 hours) [phone]
Sales & Admin Fax [phone]
Repair & Service 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

Worthing S.P.A.
Flowserve Corporation
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
Flowserve Pte Ltd.
10 Tuas Loop
Singapore 637345
Telephone: [phone]
Telefax: [phone]