Flowserve MENBLOC User Manual

USER INSTRUCTIONS

MENBLOC centrifugal pump

Close-coupled single-stage, axial suction, vertical discharge
type centrifugal motopump

PCN=71576296 – 02/13 (E) Original instructions.

Installation

Operation

Maintenance

These instructions must be read prior to installing,

operating, using and maintaining this equipment.

MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13

CONTENTS

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

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

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

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

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

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

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

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

1.9 Noise level ....................................................... 9

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

2.1 Consignment receipt and unpacking ............. 11

2.2 Handling ........................................................ 11

2.3 Lifting ............................................................. 13

2.4 Storage .......................................................... 13

2.5 Recycling and end of product life .................. 13

3 PUMP DESCRIPTION ......................................... 13

3.1 Configurations ............................................... 13

3.2 Nomenclature ................................................ 15

3.3 Coverage charts ............................................ 16

4 INSTALLATION .................................................... 17

4.1 Location ......................................................... 17

4.2 Foundation..................................................... 17

4.3 Piping ............................................................. 17

4.4 Electrical connections .................................... 19

4.5 Protection systems ........................................ 20

Page

6 MAINTENANCE ................................................... 25

6.1 General .......................................................... 25

6.2 Maintenance schedule ................................... 25

6.3 Spare parts .................................................... 27

6.4 Recommended spares and consumable items27

6.5 Tools required ................................................ 28

6.6 Disassembly .................................................. 30

6.7 Assembly ....................................................... 31

7 FAULTS; CAUSES AND REMEDIES .................. 33

8 PARTS LIST AND DRAWINGS ........................... 34

8.1 Sectional drawings ........................................ 34

8.2 Sectional drawings part list ............................ 36

8.3 General arrangement drawing ....................... 36

9 CERTIFICATION ................................................. 37

10 OTHER RELEVANT DOCUMENTATION AND

MANUALS ....................................................... 37

10.1 Supplementary User Instructions ................ 37

10.2 Change notes .............................................. 37

10.3 Additional sources of information ................ 37

Page

5 COMMISSIONING, START-UP, OPERATION AND

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

5.1 Direction of rotation ....................................... 21

5.2 Guarding ........................................................ 21

5.3 Priming and auxiliary supplies ....................... 21

5.4 Starting the pump .......................................... 22

5.5 Running the pump ......................................... 22

5.6 Stopping and shutdown ................................. 23

5.7 Hydraulic, mechanical and electrical duty ..... 24

5.8 Pumps for Food Use or Potable Water ......... 24

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MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13

INDEX

Additional sources (10.3) ....................................... 37

Assembly (6.7) ....................................................... 31

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

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

Certification (9) ...................................................... 37

Change notes (10.2) .............................................. 37

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

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

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

Configurations (3.1) ............................................... 13

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

Coverage charts (3.3) ............................................ 16

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

Disassembly (6.6) .................................................. 30

Discharge piping (4.3.3) ....................................... 19

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

Dismantling (see 6.6, Disassembly) ...................... 30

Drawings (8.1) ....................................................... 34

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

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

Electrical connections (4.4) ................................... 19

Electrical supply (4.4.2) ........................................ 20

End of product life (2.5) ......................................... 13

Fastener torques (see 6.7.1) ................................. 31

Faults; causes and remedies (7) ........................... 33

Final checks (4.3.4) .............................................. 19

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

Foundation (4.2) .................................................... 17

Forces and moments (see 4.3.1) ........................... 17

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

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

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

Hydraulic, mechanical and electrical duty (5.7) ..... 24

Inspection (6.2.2 and 6.2.3) ................................... 26

Installation (4) ........................................................ 17

Internal coating (6.2.5) ........................................... 27

Lifting (2.3) ............................................................. 13

Location (4.1) ......................................................... 17

Maintenance (6) ..................................................... 25

Maintenance schedule (6.2) .................................. 25

Mechanical seal (see 6.2.4 and 6.4.2) 27

Mechanical seal assembly (6.7.2) ......................... 32

Nomenclature (3.2) ................................................ 15

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

Operating limits (see 3.1) ...................................... 13

Ordering spare parts (6.3.1) .................................. 27

Parts lists (8.2) ....................................................... 36

Piping (4.3) ............................................................ 17

Protection systems (4.5) ........................................ 20

Pump masses (2.2.2) ............................................ 12

Reassembly (see 6.7, Assembly) .......................... 31

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

Recommended spares (6.4) .................................. 27

Recycling (2.5) ....................................................... 13

Replacement parts (see 6.3 and 6.4) .................... 27

Page

Page

Running the pump (5.5) ......................................... 22

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

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

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

Safety, protection systems (see 1.6 and 4.5)

Sectional drawings (8.1) ........................................ 34

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

Sources, additional information (10.3) ................... 37

Spare parts (6.3) .................................................... 27

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

Standard maintenance (6.2.1) .............................. 26

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

Stop/start frequency (5.5.5) ................................... 23

Stopping and shutdown (5.6) ................................. 23

Storage, pump (2.4) ............................................... 13

Storage, spare parts (6.3.2) ................................... 27

Suction piping (4.3.2) ............................................ 18

Supplementary manuals or information sources ... 37

Tools required (6.5)................................................ 28

Torques for fasteners (see 6.7.1) .......................... 31

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

Trouble-shooting (see 7) ........................................ 33

Vibration (5.5.4) ..................................................... 23

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MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13

1 INTRODUCTION AND SAFETY

1.1 General

These instructions must always be kept

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

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

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

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

These instructions must be read prior to

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

1.2 CE marking and approvals

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

Where applicable the Directives and any additional
Approvals cover important safety aspects relating to
machinery and equipment and the satisfactory
provision of technical documents and safety
instructions. Where applicable this document
incorporates information relevant to these Directives
and Approvals.
To confirm the Approvals applying and if the product is
CE marked, check the serial number plate markings
and the Certification. (See section 9, Certification.)

1.3 Disclaimer

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

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

1.4 Copyright

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

1.5 Duty conditions

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

The product must not be operated beyond

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

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

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MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13

1.6 Safety

1.6.1 Summary of safety markings

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

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.

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.

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

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

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

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

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MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13

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

Gland packing must not be used when pumping
hazardous liquids.

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

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

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

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

NEVER RUN THE PUMP DRY

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

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

1.6.4 Products used in potentially explosive
atmospheres

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

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

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

The measures are explained under the headings of:

• Avoiding excessive surface temperature

• Preventing build up of explosive mixtures

• Preventing the generation of sparks

• Preventing leakages

• Maintaining the pump to avoid hazard

1.6.4.1 Scope of compliance

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

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

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

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1.6.4.2 Marking

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

II 2 GD c IIC 135 ºC (T4)

Equipment Group
I = Mining
II = Non-mining

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

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

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

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

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

1.6.4.3 Avoiding excessive surface temperatures

ENSURE THE EQUIPMENT TEMPERATURE

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

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

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

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

Temperature limit of liquid

handled (* depending on

material and construction

variant - check which is

lower)

Consult Flowserve
Consult Flowserve

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

Temperature

class to

EN 13463-1

T6
T5
T4
T3
T2
T1

Maximum

surface

temperature

permitted

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

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

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

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

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

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

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

1.6.4.4 Preventing the build up of explosive
mixtures

ENSURE PUMP IS PROPERLY FILLED AND

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

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

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

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

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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

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

1.7 Nameplate and safety labels

1.7.1 Nameplate

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

these User Instructions.

1.7.2 Safety labels

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

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

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

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

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

1.6.4.7 Maintenance to avoid the hazard

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

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

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.

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.

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1.8.1 Ecodesign

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

1.9 Noise level

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

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

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

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

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

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

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

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

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

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Motor size
and speed

kW (hp)

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

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

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

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

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

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

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

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

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

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

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

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

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

Pump

only

1 1 1 1

Pump and

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

motor

Pump

only

Pump and

motor

Pump

only

85 87 83 85

Pump and

motor

Pump

only

Pump and

motor

Page 10 of 40 flowserve.com

MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13

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

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

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

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

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

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

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

2 TRANSPORT AND STORAGE

2.1 Consignment receipt and unpacking

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

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

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

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

2.2 Handling

2.2.1 General instructions concerning handling

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

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

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

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

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

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

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

Page 11 of 40 flowserve.com

MENBLOC USER INSTRUCTIONS ENGLISH 71576296 - 02/13

2.2.2 Pump unit and motor masses

Speed 1450 min-1

MENBLOC

50-32-125/0.55-4 25 55 11 24
50-32-160/0.55-4 35 77 11 24
50-32-200/1.2-4 46 101 18 40
50-32-200L/1.5-4 50 110 17 37
65-40-125/0.55-4 31 68 11 24
65-40-160/0.75-4 33 73 13 29
65-40-200L/1.5-4 49 108 17 37
65-40-250/2.2-4 63 139 23 51
65-40-250L/4-4 76 168 29 64
65-50-125/0.75-4 35 77 13 29
65-50-160/1.2-4 52 115 18 40
65-50-200L/3.3-4 63 139 25 55
65-50-250L/4-4 76 168 29 64
80-65-125/1.2-4 47 104 18 40
80-65-160/1.5-4 53 117 17 37
80-65-160/2.2-4 59 130 23 51
80-65-200L/3.3-4 70 154 25 55
80-65-200L/4-4 74 163 29 64
80-65-250L/8.2-4 128 282 65 143
80-65-315/15-4 * 268 591 163 359
100-80-160/1.5-4 56 123 17 37
100-80-160/2.2-4 62 137 23 51
100-80-200L/8.2-4 121 267 65 143
100-80-250L/8.2-4 134 295 65 143
100-80-250L/12-4 137 302 68 150
100-80-315/15-4 * 277 611 163 359
125-100-200L/8.2-4 137 302 65 143
125-100-250L/12-4 146 322 68 150
125-100-315/22-4 * 320 705 196 432
125-100-315L/30-4 * 382 842 256 564
150-125-250L/15-4 * 283 624 163 359
150-125-250L/22-4 * 317 699 196 432

Unit mass Motor mass

kg lb kg lb

* IP 55 motor (added pump shaft)

Pieces below 25 kg (55 lb) can be manually
handled but operators should wear protective gloves
and exercise caution.

Speed 2900 min-1

MENBLOC

50-32-125/1.2-2 28 62 13 29
50-32-160/2.2-2 46 101 21 46
50-32-160/3-2 49 108 24 53
50-32-200/4.6-2 57 126 29 64
50-32-200/6.5-2 79 174 41 90
50-32-200L/8.5-2 82 181 49 108
50-32-200L/13-2 100 220 67 148
65-40-125/2.2-2 44 97 21 46
65-40-125/3-2 47 104 24 53
65-40-160/4.6-2 55 121 29 64
65-40-200L/8.5-2 83 183 49 108
65-40-200L/13-2 101 223 67 148
65-40-250/13-2 108 238 67 148
65-40-250/16-2 119 262 78 172
65-40-250L/18.5-2 * 200 441 137 302
65-40-250L/22-2 * 220 485 150 331
65-40-250L/30-2 * 298 657 233 514
65-50-125/3-2 49 108 24 53
65-50-125/4.6-2 54 119 29 64
65-50-160/4.6-2 63 139 29 64
65-50-160/6.5-2 75 165 41 90
65-50-200L/18.5-2 * 189 417 137 302
65-50-200L/22-2 * 220 485 150 331
80-50-250L/30-2 * 297 655 233 514
80-65-125/3-2 53 117 24 53
80-65-125/4.6-2 58 128 29 64
80-65-125/6.5-2 70 154 41 90
80-65-160/13-2 103 227 67 148
80-65-160/16-2 114 251 78 172
80-65-200L/22-2 * 221 487 150 331
80-65-200L/30-2 * 295 650 233 514
80-65-200L/37-2 * 312 688 249 549
100-80-160/13-2 106 234 67 148
100-80-160/16-2 117 258 78 172
100-80-200L/22-2 * 244 538 150 331
100-80-200L/30-2 * 311 686 233 514
100-80-200L/37-2 * 328 723 249 549

Unit mass Motor mass

kg lb kg lb

* IP 55 motor (added pump shaft)

Pieces below 25 kg (55 lb) can be manually
handled but operators should wear protection gloves
and exercise caution.

Page 12 of 40 flowserve.com