Flowserve NMD User Manual

NMD, NMAD centrifugal pumps

USER INSTRUCTIONS

Installation

Operation

Multi-stage, vertical, simple suction and radial joint plan
pump type centrifugal pumps

PCN=71576436 – 11/09 (E) Original instructions.

Maintenance

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

CONTENTS

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

1.1 G

ENERAL

1.2 CE

1.3 D

ISCLAIMER

1.4 C

OPYRIGHT

1.5 D

UTY CONDITIONS

1.6 S

AFETY

1.7 N

AMEPLATE AND SAFETY LABELS

1.8 S

PECIFIC MACHINE PERFORMANCE

2 TRANSPORT AND STORAGE ...........................10

2.1 C

ONSIGNMENT RECEIPT AND UNPACKING

2.2 H

ANDLING

2.3 L

IFTING

2.4 S

TORAGE

2.5 R

ECYCLING AND END OF PRODUCT LIFE

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

3.1 C

ONFIGURATIONS

3.2 N

OMENCLATURE

4 INSTALLATION....................................................13

4.1 L

OCATION

4.2 F

OUNDATION

4.3 I

NITIAL ALIGNMENT

4.4 P

IPING

4.5 E

LECTRICAL CONNECTIONS

4.6 F

INAL SHAFT ALIGNMENT CHECK

4.7 P

ROTECTION SYSTEMS

5 COMMISSIONING, START-UP, OPERATION AND

SHUTDOWN...........................................................18

5.1 D

IRECTION OF ROTATION

5.3 P

RIMING AND AUXILIARY SUPPLIES

5.4 S

TARTING THE PUMP

5.5 R

UNNING THE PUMP

5.6 S

TOPPING AND SHUTDOWN

5.7 H

YDRAULIC, MECHANICAL AND ELECTRICAL DUTY

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

5.8 P

UMPS FOR FOOD USE OR POTABLE WATER

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

MARKING AND APPROVALS

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

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

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

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

......................................................10

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

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

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

.............................................13

.......................................................13

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

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

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

.......................................19

........................................19

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

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

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

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

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

PAGE

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

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

..........10

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

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

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

...22

6 MAINTENANCE...................................................22

6.1 G

7 FAULTS; CAUSES AND REMEDIES ..................27

8 PARTS LIST AND DRAWINGS ...........................28

9 CERTIFICATION .................................................36

10 OTHER RELEVANT DOCUMENTATION AND

MANUALS...............................................................36

ENERAL

6.3 S

PARE PARTS

6.4 R

ECOMMENDED SPARES AND CONSUMABLE ITEMS

............................................................................25

6.5 D

ISASSEMBLY

8.1 S

ECTIONAL DRAWINGS

8.2 S

ECTIONAL DRAWINGS PART LIST

8.3 G

ENERAL ARRANGEMENT DRAWING

10.1 S

10.2 C

10.3 A

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

..................................................25

.................................................25

....................................28

.....................34

.................36

UPPLEMENTARY USER INSTRUCTIONS
HANGE NOTES
DDITIONAL SOURCES OF INFORMATION

............................................36

PAGE

..........36

.........36

Page 2 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

INDEX

Additional sources (10.3).......................................36

Alignment of shafting (see 4.2, 4.3 and 4.6)

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

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

Certification (9) ......................................................36

Change notes (10.2)..............................................36

Cleaning prior to operation (5.8.1) ........................22

Commissioning, start-up, operation (5) .................18

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

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

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

Direction of rotation (5.1) .......................................18

Disassembly (6.5)..................................................25

Discharge piping (4.4.3) .......................................16

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

Dismantling (see 6.5, Disassembly)......................25

Drawings (8.1) .......................................................28

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

Electrical connections (4.5) ...................................17

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

Faults; causes and remedies (7) ...........................27

Final checks (4.4.4) ..............................................17

First pump start up (5.4.2) ....................................19

Foundation (4.2) ....................................................14

Forces and moments (see 4.4.1)...........................15

General arrangement drawing (8.3) ......................36

Gland packing (6.2.5) ............................................24

Guarding (5.2)........................................................18

Handling (2.2) ........................................................10

Hydraulic, mechanical and electrical duty (5.7).....21

Inspection (6.2.2 and 6.2.3)...................................23

Installation (4) ........................................................13

Internal coating (6.2.6)...........................................25

Lifting (2.3).............................................................11

Location (4.1).........................................................13

Maintenance (6).....................................................22

Maintenance schedule (6.2) ..................................23

Mechanical seal (6.2.4) .........................................24

Nomenclature (3.2)................................................13

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

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

Ordering spare parts (6.3.1) ..................................25

Parts lists (8.2).......................................................34

Piping (4.5) ............................................................17

Protection systems (4.7)........................................17

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

Receipt and unpacking (2.1)..................................10

Recommended fill quantities (see 6.2.1)...............23

Recommended grease lubricants (see 6.2.1) .......23

Recommended spares (6.4) ..................................25

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

Replacement parts (see 6.3 and 6.4)....................25

Running the pump (5.5).........................................19

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

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

PAGE

PAGE

Safety, protection systems (see 1.6 and 4.7) ..........5

Sectional drawings (8.1) ........................................28

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

Sources, additional information (10.3)...................36

Spare parts (6.3)....................................................25

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

Standard maintenance (6.2.1) ..............................23

Starting the pump (5.4)..........................................19

Stop/start frequency (5.5.6) ...................................21

Stopping and shutdown (5.6).................................21

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

Storage, spare parts (6.3.2)...................................25

Suction piping (4.4.2) ............................................16

Supplementary manuals or information sources ...36

Thermal expansion (4.3.1) ....................................15

Transport and storage (2) .....................................10

Trouble-shooting (see 7)........................................27

Vibration (5.5.5) .....................................................20

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

Page 3 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

1 INTRODUCTION AND SAFETY

1.1 General

These instructions must always be kept

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

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

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

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

These instructions must be read prior to

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

1.2 CE marking and approvals

It is a legal requirement that machinery and
equipment put into service within certain regions of
the world shall conform with the applicable CE
Marking Directives covering Machinery and, where
applicable, Low Voltage Equipment, Electromagnetic
Compatibility (EMC), Pressure Equipment Directive
(PED) 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
Pump Division to provide sound and all necessary
information the content of this manual may appear
insufficient and is not guaranteed by Flowserve as
to its completeness or accuracy.

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

1.4 Copyright

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

1.5 Duty conditions

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

The product must not be operated beyond

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

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

Page 4 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

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:

1.6.3 Safety action

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

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 substances
and toxic fluid” safety instructions where non­compliance would affect personal safety and could
result in loss of life.

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

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

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

This sign is not a safety symbol but indicates

an important instruction in the assembly process.

1.6.2 Personnel qualification and training

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

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

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.

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

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

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

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

Page 5 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

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

Gland packing must not be used when pumping
hazardous liquids.

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

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

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

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

NEVER RUN THE PUMP DRY

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

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

1.6.4 Products used in potentially explosive
atmospheres

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

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

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

The measures are explained under the headings of:

• Avoiding excessive surface temperature.

• Preventing build up of explosive mixtures.

• Preventing the generation of sparks.

• Preventing leakages.

• Maintaining the pump to avoid hazard.

1.6.4.1 Scope of compliance

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

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

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

Page 6 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

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 °C (104 °F); refer to
Flowserve for higher ambient temperatures.

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

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

Temperature limit of liquid

handled (* depending on

material and construction

variant - check which is

lower)

Consult Flowserve

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

Temperature

class to

prEN 13463-1

T6
T5
T4
T3
T2
T1

Maximum

surface

temperature

permitted

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

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

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

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

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

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

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

1.6.4.4 Preventing the build up of explosive
mixtures

ENSURE PUMP IS PROPERLY FILLED AND

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

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

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

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

Page 7 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

1.6.4.5 Preventing sparks

To prevent a potential hazard from mechanical

contact, the coupling guard must be non-sparking.
To avoid the potential hazard from random induced

current generating a spark the ground contact on the
baseplate must be used.

Avoid electrostatic charge: do not rub non­metallic surfaces with a dry cloth, ensure cloth is
damp.

Where applicable the coupling must be selected to
comply with 94/9/EC and correct alignment must be
maintained.

Additional requirements for metallic pumps on
non-metallic baseplates.

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

1.6.4.6 Preventing leakage

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

Oil lubricated units only:

1.8 Specific machine performance

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

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

Page 8 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

1.9 Noise level

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

The usual approach is to control the exposure time
to the noise or to enclose the machine to reduce
emitted sound. You may have already specified a
limiting noise level when the equipment was
ordered, however if no noise requirements were
defined, then attention is drawn to the following table
to give an indication of equipment noise level so that
you can take the appropriate action in your plant.

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

Similarly the motor noise assumed in the “pump and
motor” noise is that typically expected from standard
and high efficiency motors when on load directly
driving the pump. Note that a motor driven by an
inverter may show an increased noise at some
speeds.
If a pump unit only has been purchased for fitting
with your own driver then the “pump only” noise
levels in the table should be combined with the level
for the driver obtained from the supplier. Consult
Flowserve or a noise specialist if assistance is
required in combining the values.

It is recommended that where exposure approaches
the prescribed limit, then site noise measurements
should be made.
The values are in sound pressure level LpA at 1 m
(3.3 ft) from the machine, for “free field conditions
over a reflecting plane”.

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

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

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

Motor size

and speed

kW (hp)

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

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

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

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

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

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

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

15 (20) 80 81 76 78 70 71 68 69

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

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

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

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

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

Pump

only

1 1 1 1

Pump and

motor

Pump

only

Pump and

motor

Pump

only

85 87 83 85

Pump and

motor

Pump

only

Pump and

motor

Page 9 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

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

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

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

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

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

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

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

2 TRANSPORT AND STORAGE

2.1 Consignment receipt and unpacking

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

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

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

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

2.2 Handling

2.2.1 General instructions concerning handling

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

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

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

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

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

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

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

Page 10 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

2.2.2 Pump masses

All masses are in kg:

Pump type 2 stages 3 stages 4 stages 5 stages 6 stages 7 stages 8 stages 9 stages

102 NMD

122 NMD

152 NMD

202 NMD

252 NMD

102 NMAD

122 NMAD

152 NMAD

202 NMAD

322 361 400 439 478 517 556 595
755 830 905 980 1055

1005 1125 1245 1365 1485

1205 1405 1605
1600 1920

305 344 383 422 461 500 539 578

700 775 850 925 1000

950 1070 1190 1310

1125 1325

All motors (for masses see the motor

description plate) must be handled with a winch.

For masses above 25 kg (55 lb), manual

handling is forbidden.

2.3 Lifting

2.3.1 Slinging of motor pumps units

Bareshaft pump

Use handling means in accordance with
motor pump unit mass mentioned on the CE plate.
For the masses of the pumps bare end of shaft
see table § 2.2.2 and nameplate.

To avoid distortion and for the
safety of the pump unit and personnel, do not
handle the pump unit (motor +pump) by the lifting
eyes of the motor. The pump unit should be lifted
as shown on the sketch below.

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

Refer to the motor manual for motor

handling

When handling always wear gloves, safety

boots and an industrial safety helmet.

For masses above 25 kg (55 lb), manual

handling is forbidden.

Pump

Type

102 NMD
122 NMD

152 NMD

202 NMD
252 NMD

102 NMAD M16 : 140 Nm / M22 : 310 Nm
122 NMAD

152 NMAD

202 NMAD

Bolting torque Pump / Motor bolting
(Bolting diameter according to motor
configuration)

M16 : 140 Nm / M22 : 310 Nm
M16 : 140 Nm / M22 (motor IP55) : 500 Nm
/ M22 (motor IP23) : 310 Nm
M16 : 140 Nm / M22 (motor IP55) : 500 Nm
/ M22 (motor IP23 <= 160 kW) : 310 Nm /
M22 (motor IP23 > 160 kW) : 500 Nm
M22 (motor <= 160 kW) : 310 Nm / M22

(motor > 160 kW) : 500 Nm

M24 : 390 Nm
M16 : 140 Nm / M22 (motor IP55) : 500 Nm

/ M22 (motor IP23) : 310 Nm
M16 : 140 Nm / M22 (motor IP55) : 500 Nm
/ M22 (motor IP23 <= 250 kW) : 310 Nm /
M22 (motor IP23 > 250 kW) : 500 Nm
M22 (motor <= 160 kW) : 310 Nm / M22

(motor > 160 kW) : 500 Nm

Page 11 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

2.4 Storage

Store the pump in a clean, dry
location away from vibration. Leave piping
connection covers in place to keep dirt and other
foreign material out of pump casing. Turn pump at
intervals to prevent brinelling of the bearings and
the seal faces, if fitted, from sticking.

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

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

The reliability of the delivered machine can only be
ensured if it is used according to the conditions
given in this manual. The maximum values
specified in this manual must never be exceeded.

2.5 Recycling and end of product life

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

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

3 PUMP DESCRIPTION

3.1 Configurations

The NMD or NMAD type pump is a vertical, multi­stage, simple suction and radial joint plan pump.
This pump is designed for the pumping of cold
water or all clear liquids which are not solid and
liquid mixtures, corrosive, abrasive or explosive
when in contact with the pump motor unit and its
working parts (Important: for other liquids consult
FLOWSERVE for preliminary advice).

• The modular design (2 hydraulics by pump

type, number of stages variation) enables an
accurate pump adjustment to the required
operating conditions

• Guiding bush in suction casing

• Semi-flexible coupling: NMD

• Removable rigid coupling: NMAD

• Standardized motor

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

• Maximum working pressure at discharge:

- 102 NMD - 102 NMAD ...................... 25 bars

- 122 NMD - 122 NMAD ...................... 25 bars

- 152 NMD - 152 NMAD ...................... 30 bars

- 202 NMD - 202 NMAD ...................... 35 bars

- 252 NMD........................................... 40 bars

• Maximum working pressure at suction

............................................................. 10 bars

.......................................16 bars for 252 NMD

• Maximum pumped fluid temperature

- Gland packing ................................... 105 °C

- Mechanical seal ................................ 80 °C

• Minimum pumped fluid temperature.... -10 °C

•

Maximum solid suspension ................. 50 g/m

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

• Viscosity .............................................. 1 mm²/s

• Frequency ........................ 50 Hz (1470 min-1)

• Maximum number of stages

- 102 NMD....9 stages - 102 NMAD....9 stages

- 122 NMD....6 stages - 122 NMAD....6 stages

- 152 NMD....6 stages - 152 NMAD....5 stages

- 202 NMD....4 stages - 202 NMAD....3 stages

- 252 NMD....3 stages

The maximum speed is shown on

the pump nameplate.

3

Page 12 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

3.2 Nomenclature

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

Speed of rotation

Pump type

Flow rate

Head

Radial/thrust bearing

Year of construction +
Manufacture number

Mass
Maximum admissible

Pressure at 20 °C
Maximum / minimum

temperature

Each pump unit is supplied with the following nameplate:

Mass of the set

4 INSTALLATION

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

potentially explosive atmospheres.

The condition of minimum submergence must
be respected. Level control shall be fitted in the
sump to prevent liquid level dropping below
minimum acceptable.

All equipment must be grounded.

4.1 Location

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

Page 13 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

NF E 27 811

4.2 Foundation

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

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

4.2.1 Setting the base plate for anchoring

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

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

c) Lay the base plate and level in both directions

with extra shims. The base plate should be level
to within 0.5 mm per 1 m.

4.2.2 Levelling

Pump without motor:

• Levelling on the motor stool with a levelling
instrument

• Admissible tolerance 0.5 mm for 1 metre

• Wedge under the pump

Pump with motor:

• Levelling on the suction and discharge flange
with a frame level

• Admissible tolerance 0.5 mm for 1 metre

• Wedge under the pump

LEVEL

Anchor bolts must be appropriate for the foot bolt
holes. Use anchor bolts of accepted standards and
sufficient length so that they may be clamped safely
in the grout.

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

FRAME
LEVEL

Page 14 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

4.3 Initial alignment

The alignment will be definitive only

Before connecting the couplings

verify the motor rotation direction.

4.3.1 Thermal expansion

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

4.3.2 Alignment methods

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

The alignment MUST be checked.

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

Alignment
Parallelism and concentricity check:

Check the alignment at three or four

points, before pipeworks assembly.

with a rule with a comparator

Admissible margin for a motor with roller bearings:
= 0.15 mm parallel checking
= 0.1 mm angular checking

Angular checking:

with a sliding rule with a caliper gauge

after pipework connection (see § 4.4.1).

Never connect the electric motor

before the setting has been completely finished.

4.4 Piping

The user must verify that the equipment is

isolated from any external sources of vibration.

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

4.4.1 Suction and discharge pipework

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

and about 3 m/s at discharge.

b) Take into account the available NPSH, which

must be superior to the required NPSH of the
pump.

Never use pump as a support for
piping.

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

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

When designing the pipes (§ 4.4.2.1, § 4.4.2.2, §

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

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

Pipework

arragement

Suction and

discharge

Forces (daN) Moments (m.daN)

DN

flanges

FY FZ FX

100 50 40 45 80 18 20 25 37
125 62 55 55 100 22 26 31 46

75 60 81 120 22 31 37 55

150

100 81 90 157 34 39 48 72

200
250 125 100 112 195 43 49 60 89

300 150 121 135 235 65 74 91 134

∑ F

MY MZ MX

∑ M

Page 15 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

SUFFICIENT

Do not tighten flanges before the final
check (see § 4.4.4).

4.4.2.2 Design of a suction lift line

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

Non-return valve

Ensure piping and fittings are flushed

before use.

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

4.4.2 Suction piping

4.4.2.1 Design of a flooded suction line

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

Non-return valve

Continuous flow valve

Valve

IMMERSION : I

I ≥ 3 x D

Sump suction configuration

a) Avoid sharp elbows or sudden narrowings. Use

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

b) Arrange that the suction pipework is inclined

upwards towards the pump ensuring that there
are no peaks.

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

because it would generate pulsations (valve
beating).

Valve

Flooded pump configuration

a) Avoid sharp elbows or sudden narrowing. Use

convergent ≤ 20° (total angle).

b) Arrange the pipework so that there are no air

pockets (no bulges).

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

provide them with air relief cocks.

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

three or four times the area of the suction pipe.

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

with direct crossing.

Page 16 of 40

Do not tighten flanges before the final

check (see § 4.4.4).

4.4.3 Discharge piping

4.4.3.1 Design of a discharge line

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

total angle will be between 7° and 12°.

b) Install the discharge valve after the non-return

valve downstream.

c) The non-return valve will be set in the discharge

pipe to protect the pump from any excessive
pressure surge and from reverse rotation.

If necessary, a control manometer can be connected
on the pipework.

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

The identification nameplate should be checked to
ensure the power supply is appropriate.

A device to provide emergency stopping shall be
fitted.

Carry out the ground connections according to the

Control

manometer

Do not tighten flanges before the final
check (see § 4.4.4).

4.4.4 Final checks

a) Check the tightening of anchor bolts. Tighten

them if necessary.

b) Check that protective covers on suction and

discharge flanges are removed.

c) Check that holes of pipework flanges are parallel

and correspond to those of the pump.

d) Tighten suction and discharge flanges.

4.5 Electrical connections

current local regulations.

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

5.4.2).

4.6 Final shaft alignment check

a) Check the alignment pump-motor according to

the procedure § 4.3.2. Rectify if necessary by
adjusting the motor only.

b) Check by hand that the pump turns freely.

A binding indicates a distortion of the pump,
which is due to excessive pipes strains. If
necessary the pipework design must be re­examined.

c) If it provided, connect auxiliary pipe systems

(hydraulic, pneumatic, sealing system).

d) Control tightness and functionality of auxiliary

piping.

4.7 Protection systems

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

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

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

It is important to be aware of the EUROPEAN
DIRECTIVE on electromagnetic compatibility when
wiring up and installing equipment on site. Attention
must be paid to ensure that the techniques used during
wiring/installation do not increase electromagnetic
emissions or decrease the electromagnetic immunity of
the equipment, wiring or any connected devices. If in
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 following protection systems are
recommended particularly if the pump is installed in
a potentially explosive area or is handling a
hazardous liquid. If in doubt consult Flowserve. If
there is any possibility of the system allowing the
pump to run against a closed valve or below
minimum continuous safe flow a protection device
should be installed to ensure the temperature of the
liquid does not rise to an unsafe level.

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

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

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

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

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

Page 17 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

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

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

5 COMMISSIONING, START-UP,
OPERATION AND SHUTDOWN

These operations must be carried out by

fully qualified personnel.

5.3.1 Priming of a flooded pump

a) As discharge valve is closed, fill the pump by

opening the valve at suction. Let air escape by
removing the plugs located on the pump.

b) If the discharge pipe is headed and there is a

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

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

replace the plugs.

5.1 Direction of rotation

Starting or operating pumps with the
wrong direction of rotation can be harmful to the
pumps. Ensure that the pump rotation is the same
as the arrow on the pump casing.
It is preferable to check the direction of rotation
before installing the coupling. If not, the pump must
be filled in with the liquid before start-up.

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

5.2 Guarding

Guarding is supplied fitted to the pump set.

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

5.3 Priming and auxiliary supplies

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

Air escape

Priming of a flooded pump

5.3.2 Priming of a sump suction pump

* With foot valve:

a) Fill suction pipe and casing with liquid from an

independent source (pressure 1 to 2 bars).

b) Let air escape by removing the plugs located on

the pump.

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

replace the plugs.

Air escape

EXTERNAL SOURCE

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

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

These operations must be carried out by personnel

Priming of a sump suction pump with foot valve

with approved qualifications.

Page 18 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

Without foot valve:

Priming may be accomplished by means of venting
system.

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

5.4 Starting the pump

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

Necessarily:

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

rings.

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

Refer to the rotation arrow of the pump.

e) Install all protection systems and more

particularly the coupling guard [7450] and the
shield grid [9331] of the bearing.

f) Open all suction valves (if existing).
g) Close the outlet valve and the bypass valve.
h) Ensure inlet pipe and pump casing are

completely full of liquid.

5.4.2 First pump start-up

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

a) Start motor and check outlet pressure.
b) If pressure is satisfactory, slowly OPEN outlet

valve.

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

for a period longer than 30 seconds.

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

pump. Refer to faultfinding chart for fault
diagnosis.

The pump should run smoothly and without
vibration.

The pump must never run at a capacity less than
10 % (for 102-122-152-202 NMD or NMAD and for
252 NMD) of the capacity at the best efficiency
point.

5.5 Running the pump

5.5.1 Venting the pump

Vent the pump to enable all trapped air to
escape taking due care with hot or hazardous
liquids.

Under normal operating conditions, after the pump
has been fully primed and vented, it should be
unnecessary to re-vent the pump.

5.5.2 Pump fitted with a stuffing box

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

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

The pump should be run for ten minutes with steady
leakage and the gland nuts tightened by 10 degrees
at a time until leakage is reduced to an acceptable
level. The temperature of the gland should be
checked after each round of tightening. If the
temperature starts to climb rapidly then back off the
gland nuts until the temperature drops down. Wait
for the temperature to stabilize before tightening
again. The leakage must not be reduced below a
rate of 20 drops per minute. Bedding in of the
packing may take several hours.

Never remove a plug when the pump is

running.

Page 19 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

9210

4610

9220

4213

9210

9220

4213

4610

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

If hot liquids are pumped (105 °C < t ≤ 140 °C), the
stuffing box includes a thermal barrier to avoid
evaporation in the packing zone, which would
quickly destroy the gland packing.
As leakages are reduced and the cooling is made
more efficient (flow and temperature of cooling
water), it is observed that the packing gland will last
longer.

5.5.3 Pump fitted with mechanical seal

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

SAFETY INSTRUCTIONS WHEN THE PUMP IS
RUNNING:

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

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

The adjusting lines, the stuffing box, the lines
under pressure or the mechanical seal cooling lines
must be protected against external knocks.

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

5.5.4 Bearings

Simple mechanical seal

Balanced mechanical seal

NEVER RUN A MECHANICAL SEAL

DRY, EVEN FOR A SHORT WHILE.

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

• Record the bearing temperature (t) and the
ambient temperature (ta)

• Estimate the likely maximum ambient

temperature (tb)

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

and the trip at 100 °C (212 °F) for oil lubrication
and 105 °C (220 °F) for grease lubrication

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

5.5.5 Normal vibration levels, alarm and trip

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

Page 20 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

Alarm and trip values for installed
pumps should be based on the actual
measurements (N) taken on site on the bearing
housings of the pump in the fully commissioned as
new condition.

The example (N) value is given for the preferred
operating flow region (typically this may extend to 70
to 120 % of the pump best efficiency point); outside
the preferred flow region the actual vibration
experienced may be multiplied by up to 2.

These standard values can vary with the rotational
speed and the power absorbed by the pump. For
any special case, do not hesitate to consult us.

Measuring vibration at regular intervals will then
show any deterioration in pump or system operating
conditions.

Vibration Velocity -

unfiltered

Normal N
Alarm N x 1.25
Shutdown Trip N x 2.0

Horizontal

Configuration

mm/s (in./s)

r.m.s.

≤ 5.6 (0.22) ≤ 7.1 (0.28)
≤ 7.1 (0.28) ≤ 9.0 (0.35)

≤ 11.2 (0.44) ≤ 14.2 (0.56)

Vertical

Configuration

mm/s (in./s)

r.m.s.

5.5.6 Stop/start frequency

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

Motor rating kW (hp)

Up to 15 (20) 15

Between 15 (20) and 90 (120) 10

90 (120) to 150 (200) 6

Above 150 (200) Refer

Maximum stop/starts

per hour

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

5.6 Stopping and shutdown

5.6.1 Stopping and restarting in continuous
running

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

Stopping:
a) Avoid that the unit turns in the opposite direction

to the normal running.

b) Make sure that the discharge line pressure does

not reach the foot valve.

c) Avoid a continuous running below the authorized

flow rate (see § 5.4.2).

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

available NPSH.

c) Ensure a backpressure so that the motor power

is not in excess.

d) Respect the starting frequency

imposed by the motor manufacturer.

e) Protect the pump against water hammer

when stopping or starting.

Shutdown:

Close the outlet valve and stop the

motor. Eventually close the inlet valve.

For prolonged shutdowns 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.

5.7 Hydraulic, mechanical and electrical
duty

This product has been supplied to meet the
performance specifications of your purchase order,
however it is understood that during the life of the
product these may change. The following notes may
help the user decide how to evaluate the
implications of any change. If in doubt contact your
nearest Flowserve office.

5.7.1 Specific gravity (SG)

Pump capacity and total head in meters (feet) do not
change with SG, however pressure displayed on a
pressure gauge is directly proportional to SG. Power
absorbed is also directly proportional to SG. It is
therefore important to check that any change in SG
will not overload the pump driver or over-pressurize
the pump.

5.7.2 Viscosity

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

Page 21 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

5.7.3 Pump speed

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

5.7.4 Net positive suction head (NPSHA)

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

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

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

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

5.7.5 Pumped flow

Flow must not fall outside the minimum and
maximum continuous safe flow shown on the pump

performance curve and or data sheet

.

5.8 Pumps for Food Use or Potable
Water

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

5.8.1 Cleaning prior to operation

Pumps that are to be used for a food or drinking
water application should be cleaned before being
put into initial operation and after the installation of
spare parts that are in contact with the liquid.

Cleaning once the pump has been commissioned
will depend on the application and operating
conditions. The user must ensure that the cleaning
procedures are suitable for the application and
operating conditions, and local regulations.

6 MAINTENANCE

6.1 General

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

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

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

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

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

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

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

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

When air or compressed inert gas is used in the
maintenance process, the operator and anyone in
the vicinity must be careful and have the appropriate
protection. DO NOT SPRAY air or compressed inert
gas on skin. DO NOT DIRECT an air or gas jet
towards other people. Never use air or compressed
inert gas to clean clothes.

Before working on the pump, take measures to
prevent an uncontrolled start. Put a warning board
on the starting device with the words:
"Machine under repair: do not start".
With electric drive equipment, lock the main switch
open and withdraw any fuses. Put a warning board
on the fuse box or main switch with the words:

"Machine under repair: do not connect".

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

Page 22 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

6.2 Maintenance schedule

It is recommended that a maintenance plan
and schedule is adopted, in line with these User
Instructions. It should include the following:

a) The pump must be completely vented and

drained and rendered inert before any
disassembly operation.

b) Any auxiliary systems installed must be

monitored, if necessary, to ensure they function
correctly.

c) During cleaning of the pump ensure the

compatibility between the cleaning products and

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

give visible leakage and concentric alignment of

the gland follower to prevent excessive

temperature of the packing or follower.

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

The correct functioning of the shaft seal must be

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

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

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

temperature at the bearings to confirm

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

around close clearances, bearing housings and

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

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

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

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

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 Standard maintenance

Roller bearing

The bearings fitted are prepacked with grease at the
factory. When the regreasing period is reached it is
necessary to remove as much of the old grease as
possible with a clean lint free cloth and repack the
bearings with fresh grease.

Pump type

102 NMD

122 NMD

152 NMD

202 NMD

252 NMD

Lubrication

Frequency *

1450 min-1

8000 40

7000 30

6000 40

5500 60

5000 60

Quantity

(cm3)

* At least once a year.
The grease used in factory for first filling is:
SHELL ALVANIA R2
Its equivalents: MOBIL : Mobilux EP 2,

TOTAL : Multis 2,
ELF : ELF MULTI

6.2.2 Routine inspection (daily/weekly)

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

vibration and bearing temperatures are normal.

b) Check that there are no abnormal fluid or

lubricant leaks (static and dynamic seals) and
that any sealant systems (if fitted) are full and
operating normally.

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

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

grease lubricated pumps, check running hours

since last recharge of grease or complete

grease change.

6.2.3 Periodic inspection (six monthly)

a) Check foundation bolts for

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

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

alignment and worn driving elements.

Page 23 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

If a check shows a bad running of the

motor pump unit, the user must:

a)



Refer to the "fault finding chart" chapter 7

of this leaflet to apply the recommended
solutions.

b) Ensure that your equipment corresponds to the

arrangements of this leaflet.

c) Contact FLOWSERVE after-sales Department if

the problem persists.

6.2.4 Mechanical seals

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

6.2.5 Gland packing

6.2.5.1 Pump fitted with a packed gland

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

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

6.2.5.2 Gland packing inspection and removal

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

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

d) Inspect the state of the sleeve surface; the

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

e) Carefully clean the different pieces of the

packing gland.

6.2.5.3 Gland packing fitting

If the packing is supplied as cord the packing must
be cut so that the external diameter is lightly
tightened and there is an initial gap between the
sleeve and the packing ring.

For that purpose, wind the packing helically around
the shaft sleeve or a chuck of the same diameter.
(Take precautions to avoid damaging sleeve)

Example of straight cut Example of bevel cut

Ensure a tightening on the stuffing

box housing and not on the sleeve.

SETTING OF PACKING

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

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

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

Page 24 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

PUMP

102 NMD –
102 NMAD

122 NMD -

122 NMAD

152 NMD -

152 NMAD

202 NMD -

202 NMAD

252 NMD

DIMENSIONS IN MILLIMETERS PACKING

D1 D2 D3 D4 D5 L1 Lgh 

45 55 75 100 M12 45 205 10

55 70 95 135 M12 78 260 12

65 80 109 150 M16 91 297 14

75 100 132 180 M16 104 365 16

75 100 132 180 M16 104 365 16

6.2.6 Internal coating

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

6.3 Spare parts

6.3.1 Ordering of spares
Flowserve keeps records of all pumps that have

been supplied. When ordering spares the following
information should be quoted:

1) Pump serial number.

2) Pump size.

3) Part name

4) Part number

5) Number of parts required.

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

To ensure continued satisfactory operation,
replacement parts to the original design specification
should be obtained from Flowserve. Any change to
the original design specification (modification or use
of a non-standard part) will invalidate the pump’s
safety certification.

6.3.2 Storage of spares

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

6.4 Recommended spares and
consumable items

[2250] - [4130] - [4590-01] – [4590-02]- [4610-01] ­[4610-02] - [4610-03] - [4610-04] - [3011] - [3300] ­[3400]

a) Destroy all the gaskets after dismantling, replace

them when reassembling.

b) IT IS RECOMMENDED THAT

BEARINGS ARE NOT REUSED AFTER ANY

REMOVAL FROM THE SHAFT.

c) After serving during two years, replace the gland

packing.

6.5 Disassembly

Refer to section 1.6, Safety, and section 6

Maintenance, before dismantling the pump.

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

REPAIR OF THE PUMP

If the pump presents abnormalities or a

persistent malfunction, contact immediately:

FLOWSERVE

After-sales Service
Tel.: [phone]

(33) 2 43 40 57 57

Fax.: [phone]

(33) 2 43 40 58 17

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

a) DISCONNECT THE UNIT FROM

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

cooled and at ambient temperature.

d) DRAIN PUMP.
e) Dismantle inlet and outlet pipeworks as well as

all pipeworks.

f) REMOVE PUMP TAKING INTO

ACCOUNT SAFETY (§ 1) AND HANDLING

(§ 3) PROCEDURES.

Page 25 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

ANY DISASSEMBLY, REPAIR OR

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

Page 26 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

7 FAULTS; CAUSES AND REMEDIES

POSSIBLE CAUSES SOLUTIONS

 
 



  










   
   



   



Insufficient pressure
Pump looses prime after starting

POSSIBLE CAUSES SOLUTIONS



Rotation speed too low (check the driver)

 

Presence of air - Check and deaerate



Suction pressure insufficient - Check: the available NPSH > the required NPSH



Mechanical defects - CONSULT FLOWSERVE



Air leak in the suction pipe - Check suction pipe is airtight



Restriction in suction pipe - Check diameter of suction pipe



Suction level too low - Check the NPSH >NPSH



Obstruction of suction pipe - Check condition of pipe



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



Defective gasket - CONSULT FLOWSERVE

Insufficient flow rate
Irregular pump running
Driver overloaded
Mechanical seal leak
Equipment vibration
Excessive pump casing temperature

 

Pump or suction pipe not completely filled - Check and complete filling



Air bubbles in pipes - Check and desecrate the pipes

 

Suction level too low - Check: the available NPSH > the required NPSH



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



Total manometric head system higher than
pump differential head



Total manometric head system lower than
pump differential head

 

Pipes (valves, filter...) - Control, dismantle and clean

 

Insufficient flow rate

Worn wear-ring surfaces - Foresee pump mending. CONSULT FLOWSERVE
Seizure, jamming - CONSULT FLOWSERVE
Excessive strains on flanges

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

Defective motor bearings - CONSULT FLOWSERVE



Specific gravity or viscosity of liquid too high - Consult our local agent to analyse the problem



Misalignment - Check the alignment of the pump and of its driver



Foundations not sufficiently rigid - Check the setting of base plates: tightening, bad adjustment,

- Reduce geometrical suction lift

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

- Check valves and strainers

- Check the immersion head of the suction valve

- Check the connection in the terminal box according to the
voltage

- Check the discharge head

- Check the head losses in discharge pipes (partly closed valve,
foreign particles, back pressure too high)

- Modify the installation or change the pump set

-Throttle at discharge valve or trim the impeller (contact our
local agent): CONSULT FLOWSERVE

- Check the suction and discharge pipes (valves, back
pressure)

- Check the flange connections and eliminate strains (pipe
positioning or elastic sleeves mounting)

- Mechanical seal: CONSULT FLOWSERVE

seal

- Check the connection in the terminal box according to the
voltage

- Reduce geometrical suction lift

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

- Check valves and strainers

- Check the immersion head of the suction valve

- Mechanical seal: CONSULT FLOWSERVE

Page 27 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8 PARTS LIST AND DRAWINGS

8.1 Sectional drawings

8.1.1 102 NMD pumps

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NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8.1.2 122 NMD pumps

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NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8.1.3 152 - 202 NMD pumps

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NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8.1.4 252 NMD pumps

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NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8.1.5 102 NMAD pumps

Page 32 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8.1.6 122 - 152 - 202 NMAD pumps

Page 33 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8.2 Sectional drawings part list

8.2.1 Parts list pumps 102 NMD

N DESIGNATION N DESIGNATION

1130 Suction casing 4590-01 Gasket

1140 Discharge casing 4590-02 Gasket

1160 Stage casing 4610-01

1410-01 Diffuser 4610-02

1410-02

2110 Pump shaft 6110 Baseplate

2250

2410 Interstage sleeve 6541 Lockwasher

Diffuser, last
stage

Radial flow
impeller shrouded

4610-03

6115 Drain plug

Round section
joint ring

Round section
joint ring

Round section
joint ring

8.2.2 Parts list pumps 122 – 152 – 202 NMD

N DESIGNATION N DESIGNATION

1130 Suction casing 4610-01

1140 Discharge casing 4610-02

1160 Stage casing 4610-03

1410-01 Diffuser 4610-04

1410-02

2110 Pump shaft 6515 Drain plug

2250

2410 Interstage sleeve 6544 Circlip

2450 Shaft sleeve 6569 Plug

Diffuser, last
stage

Radial flow
impeller shrouded

6110 Baseplate

6541 Lockwasher

Round section
joint ring

Round section
joint ring

Round section
joint ring

Round section
joint ring

2450 Shaft sleeve 6544 Circlip

2460-01 Spacer sleeve 6571 Tie bolt

2460-02 Spacer sleeve 6572 Stud

2460-03 Spacer sleeve 6577-01 Hexagon head bolt

2471

2540 Thrower 6577-03 Hexagon head bolt

3011

3160 Motor stool 6577-05 Hexagon head bolt

3240 Bearing carrier 6578-01 Threaded plug

3261 Bearing cover 6578-02 Threaded plug

3266

3300 Bearing bush 6581-02 Hexagon nut

3400 Bearing sleeve 6700-01 Key

3712 Bearing nut 6700-02 Key

3853 Grease nipple 6700-03 Key

3863 Grease regulator 6700-04 Key

4120 Stuffing box gland 6700-05 Key

Inner race
centring sleeve
(bearing)

Radial ball
bearing

Bearing end
cover

6577-02 Hexagon head bolt

6577-04 Hexagon head bolt

6581-01 Hexagon nut

2460-01 Spacer sleeve 6571 Tie bolt

2460-02 Spacer sleeve 6572 Stud

2471

2540 Thrower 6577-02 Hexagon head bolt

2905 Washer 6577-03 Hexagon head bolt

3011

3160 Motor stool 6577-05 Hexagon head bolt
3240 Bearing carrier 6577-06 Hexagon head bolt

3261 Bearing cover 6577-07 Hexagon head bolt

3266

3300 Bearing bush 6578-02 Threaded plug

3400 Bearing sleeve 6581-01 Hexagon nut

3712 Bearing nut 6581-02 Hexagon nut

3853 Grease nipple 6581-03 Hexagon nut
3863 Grease regulator 6700-01 Key

4110

4120 Stuffing box gland 6700-03 Key
4130 Gland packing 7450 Coupling guard

4131 Follower 9331 Cover plate

Inner race
centring sleeve
(bearing)

Radial ball
bearing

Bearing end
cover

Stuffing box
housing

6577-01 Hexagon head bolt

6577-04 Hexagon head bolt

6578-01 Threaded plug

6700-02 Key

4130 Gland packing 7450 Coupling guard

4131 Follower 9331 Cover plate

4590-01 Gasket 9665 Special flange
4590-02 Gasket

Page 34 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8.2.3 Parts list pumps 252 NMD

N DESIGNATION N DESIGNATION

1130 Suction casing 4610-01

1140 Discharge casing 4610-02
1160 Stage casing 4610-03

1410-01 Diffuser 4610-04
1410-02

2110 Pump shaft 6515 Drain plug
2250
2410 Interstage sleeve 6544 Circlip

2450 Shaft sleeve 6571 Tie bolt
2460-01 Spacer sleeve 6572 Stud

2460-02 Spacer sleeve 6577-01 Hexagon head bolt

2471

2540 Thrower 6577-03 Hexagon head bolt

2905 Washer 6577-04 Hexagon head bolt

3011

3160 Motor stool 6577-06 Hexagon head bolt

3240 Bearing carrier 6577-07 Hexagon head bolt

3261 Bearing cover 6577-08 Hexagon head bolt

3266

3300 Bearing bush 6578-02 Threaded plug

3400 Bearing sleeve 6578-03 Threaded plug

Diffuser, last
stage

Radial flow
impeller shrouded

Inner race
centring sleeve
(bearing)

Radial ball
bearing

Bearing end
cover

6110 Baseplate

6541 Lockwasher

6577-02 Hexagon head bolt

6577-05 Hexagon head bolt

6578-01 Threaded plug

Round section joint
ring

Round section joint
ring

Round section joint
ring

Round section joint
ring

8.2.4 Parts list pumps 102 NMAD

N DESIGNATION N DESIGNATION

1130 Suction casing 6571 Tie bolt

1140 Discharge casing 6572 Stud

1160 Stage casing 6577-01 Hexagon head bolt

1410-01 Diffuser 6577-02 Hexagon head bolt

1410-02

2110 Pump shaft 6577-04 Hexagon head bolt

2250

2410 Interstage sleeve 6577-06 Hexagon head bolt

2450 Shaft sleeve 6578-01 Threaded plug

2460 Spacer sleeve 6578-02 Threaded plug

3160 Motor stool 6581-01 Hexagon nut

3266

3300 Bearing bush 6581-03 Hexagon nut

3400 Bearing sleeve 6700-01 Key

4120 Stuffing box gland 6700-02 Key

4130 Gland packing 6700-03 Key

4131 Follower 6700-04 Key

4590-01 Gasket 6700-05 Key

Diffuser, last
stage

Radial flow
impeller shrouded

Bearing end
cover

6577-03 Hexagon head bolt

6577-05 Hexagon head bolt

6581-02 Hexagon nut

3712 Bearing nut 6581-01 Hexagon nut

3853 Grease nipple 6581-02 Hexagon nut

3863 Grease regulator 6581-03 Hexagon nut

4110

4120 Stuffing box gland 6700-02 Key

4130 Gland packing 6700-03 Key

4131 Follower 6850 Pipe coupling

4134 Lantern ring 7450 Coupling guard

4590-01 Gasket 9331 Cover plate

4590-02 Gasket 9665 Special flange

Stuffing box
housing

6700-01 Key

4590-02 Gasket 7212-01 Half coupling rigid

4610-01

4610-02

4610-03

6110 Baseplate 7450 Coupling guard

6544 Circlip

Round section
joint ring

Round section
joint ring

Round section
joint ring

7212-02 Half coupling rigid

7419-01 Coupling lock nut

7419-02 Coupling lock nut

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NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

8.2.5 Parts list pumps 122 – 152 – 202 NMAD

N DESIGNATION N DESIGNATION

1130 Suction casing 6544 Circlip

1140 Discharge casing 6571 Tie bolt

1160 Stage casing 6572 Stud

1410-01 Diffuser 6577-01 Hexagon head bolt

1410-02

2110 Pump shaft 6577-03 Hexagon head bolt

2250

2410 Interstage sleeve 6577-05 Hexagon head bolt

2450 Shaft sleeve 6577-06 Hexagon head bolt

2460 Spacer sleeve 6577-07 Hexagon head bolt

Diffuser, last
stage

Radial flow
impeller shrouded

6577-02 Hexagon head bolt

6577-04 Hexagon head bolt

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

2905 Washer 6577-08 Hexagon head bolt

10.1 Supplementary User Instructions

3160 Motor stool 6578-01 Threaded plug

3266

3300 Bearing bush 6581-01 Hexagon nut

3400 Bearing sleeve 6581-02 Hexagon nut

4110

4120 Stuffing box gland 6581-04 Hexagon nut

4130 Gland packing 6700-01 Key

4131 Follower 6700-02 Key

4590-01 Gasket 6700-03 Key

4590-02 Gasket 7212-01 Half coupling rigid

4610-01

4610-02

4610-03

4610-04

6110 Baseplate 9665 Special flange

6515 Drain plug

Bearing end
cover

Stuffing box
housing

Round section
joint ring

Round section
joint ring

Round section
joint ring

Round section
joint ring

6578-02 Threaded plug

6581-03 Hexagon nut

7212-02 Half coupling rigid

7419-01 Coupling lock nut

7419-02 Coupling lock nut

7450 Coupling guard

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

10.2 Change notes

If any changes, agreed with Flowserve 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 Rotor dynamic Pumps: a reference guide,
Euro pump Guide No. 1, Euro pump & World Pumps,
Elsevier Science, United Kingdom, 1999.

Reference 2:

Pumping Manual, 9th edition, T.C. Dickenson,
Elsevier Advanced Technology, United Kingdom, 1995.

Reference 3:

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

Reference 4:

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

Reference 5:

ANSI B31.3 - Process Piping

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NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

Nota:

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NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

Nota:

Page 38 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

Nota:

Page 39 of 40

NMD, NMAD USER INSTRUCTIONS ENGLISH 71576436 - 11/09

Votre représentant local Flowserve

:

Votre co

ntact à l’usine Flowserve

:

Services & Rép

.

Fax : [phone]

58 17

Flowserve Pompes
Route d'Angers - 72234 ARNAGE
BP 305, 72001 LE MANS Cedex, France

Téléphone (24 hours) : [phone]
Ventes & Admin : [phone]

Amérique du Nord :
Flowserve
5310 Taneytown Pike, PO Box 91
Taneytown, MD 21787-0091, USA

Téléphone : [phone]
Service Client FAX : [phone]
Rechanges/Commande TEL : [phone]

Amérique du Sud :
Flowserve do Brasil Ltda
Av. Don Helder Camara, 5451
20771-001 Rio de Janerio

Tél : [phone]
Fax : [phone]

Pour trouver votre représentant local Flowserve,
utilisez le système de localisation du service après­vente sur le site www.flowserve.com

FLOWSERVE BUREAUX
COMMERCIAUX REGIONAUX :

USA et Canada

Flowserve Corporation
5215 North O’Connor Blvd.,
Suite 2300
Irving, Texas 75039-5421 USA
Téléphone 1 972 443 6500
Fax [phone]

Europe, Moyen Orient &
Afrique

Worthing S.P.A.
Flowserve Corporation
Via Rossini 90/92
20033 Desio (Milan) Italy
Téléphone 39 0362 6121
Fax [phone]

Amérique Latine et Caraïbes

Flowserve Corporation
6840 Wynnwood Lane
Houston, Texas 77008 USA
Téléphone 1 713 803 4434
Fax [phone]

Asie Pacifique

Flowserve Pte. Ltd
10 Tuas Loop
Singapore 637345
Téléphone 65 6771 0600
Fax [phone]