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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