HP Hewlett Packard Water Pump 8 UB 1 User Manual

Pump Division

Type: 8-UB-1

CENTRIFUGAL PUMP

USER INSTRUCTIONS:

INSTALLATION, OPERATION, MAINTENANCE

PCN=71569247 07-04(E)

(supercedes 6176/6511)

These instructions must be read prior to installing,

operating, using and maintaining this equipment.

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

INDEX

PAGE

Additional sources (10.3)......................................... 31

Alignment of shafting (4.2, 4.4 and 4.6)

Pre-commissioning (5.1) ..........................................16

Priming and auxiliary supplies (5.5) .........................17

Protection systems (4.8) ..........................................16

Reassembly (6.10, Assembly) .................................24

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

Recommended grease lubricants (5.2.1).................17

Recommended spares (6.4).....................................22

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

Renewal clearances (6.7).........................................23

Replacement parts (6.3 and 6.4)..............................22

Running the pump (5.7)............................................18

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

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

Safety, protection systems (1.6 and 4.8)

Sectional drawings (8)..............................................29

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

Sources, additional information (10.3) .....................31

Spare parts (6.3) ......................................................22

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

Starting the pump (5.6).............................................18

Stop/start frequency (5.7.6)......................................19

Stopping and shutdown (5.8) ...................................19

Storage, pump (2.4) .................................................10

Storage, spare parts (6.3.2) .....................................22

Supplementary manuals or information sources......31

Supplementary User Instructions (10.1)...................31

Tools required (6.5)..................................................23

Torques for fasteners (6.6).......................................23

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

Vibration (5.7.5)........................................................19

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

Assembly (6.10)....................................................... 24

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

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

Certification (9) ........................................................ 31

Change notes (10.2)................................................ 31

Clearances (6.7, Renewal clearances).................... 23

Commissioning and operation (5)............................ 16

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

Configurations (3.1) ................................................. 11

Consumable items (6.4) .......................................... 22

Design of major parts (3.3)...................................... 11

Direction of rotation (5.3) ......................................... 17

Disassembly (6.8).................................................... 23

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

Dismantling (6.8, Disassembly)............................... 23

Drawings (8) ............................................................ 29

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

Electrical connections (4.7) ..................................... 16

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

Examination of parts (6.9)........................................ 24

Fastener torques (6.6) ............................................. 23

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

Forces and moments (4.5.3) ................................... 15

Foundation (4.2) ...................................................... 12

General arrangement drawing (8.2) ........................ 30

General assembly drawings (8)............................... 29

Grouting (4.3)........................................................... 12

Guarding (5.4).......................................................... 17

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

Hydraulic, mechanical and electrical duty (5.9)....... 19

Inspection (6.2.1 and 6.2.2)..................................... 21

Installation (4) .......................................................... 12

Lifting (2.3)............................................................... 10

Location (4.1)........................................................... 12

Lubrication (5.2 and 6.2.3)

Lubrication schedule (5.2.2) .................................... 17

Maintenance (6)....................................................... 20

Maintenance schedule (6.2) .................................... 20

Name nomenclature (3.2)........................................ 11

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

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

Options (8.1.2)......................................................... 30

Ordering spare parts (6.3.1) .................................... 22

Parts lists (8)............................................................ 29

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

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

Page 3 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

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 INTRODUCTION AND SAFETY

1.1 General

These Instructions must always be kept

close to the product's operating location or

directly with the product.

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 products are designed, developed and

manufactured with state-of-the-art technologies in

modern facilities. The unit is produced with great

care and commitment to continuous quality control,

utilising sophisticated quality techniques, and safety

requirements.

Flowserve manufactures products to exacting

International Quality Management System Standards as

certified and audited by external Quality Assurance

organisations. Genuine parts and accessories have

been designed, tested and incorporated into the

products to help ensure their continued product quality

and performance in use. As Flowserve cannot test

parts and accessories sourced from other vendors the

incorrect incorporation of such parts and accessories

may adversely affect the performance and safety

features of the products. The failure to properly select,

install or use authorised Flowserve parts and

accessories is considered to be misuse. Damage or

failure caused by misuse is not covered by the

Flowserve warranty. In addition, any modification of

Flowserve products or removal of original components

may impair the safety of these products in their use.

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.

1.4 Copyright

These instructions should be read prior to

installing, operating, using and maintaining the

equipment in any region worldwide. The

equipment must not be put into service until all

the conditions relating to safety, noted in the

instructions, have been met.

be reproduced, stored in a retrieval system or

transmitted in any form or by any means without prior

permission of Flowserve Pump Division.

1.5 Duty conditions

This product has been selected to meet the

specifications of your purchaser order. The

acknowledgement of these conditions has been sent

separately to the Purchaser. A copy should be kept

with these instructions.

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).

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.

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

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 32

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1.6 Safety

NEVER DO MAINTENANCE WORK

WHEN THE UNIT IS CONNECTED TO POWER

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:

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.

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.

FLUORO-ELASTOMERS (When fitted.)

When a pump has experienced temperatures over

250 ºC (482 ºF), partial decomposition of fluoro-

elastomers (example: Viton) will occur. In this

condition these are extremely dangerous and skin

contact must be avoided.

This symbol indicates “hazardous and toxic fluid”

safety instructions where non-compliance would affect

personal safety and could result in loss of life.

HANDLING COMPONENTS

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.

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 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.

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.

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.

APPLYING HEAT TO REMOVE IMPELLER

There may be occasions when the impeller has either

been shrunk fit on to the pump shaft or has become

difficult to remove due to products of corrosion.

If you elect to use heat to remove the impeller, it must

be applied quickly to the impeller boss. TAKE

GREAT CARE!

Before applying heat ensure any residual hazardous

liquid trapped between the impeller and pump shaft is

thoroughly drained out through the impeller keyway to

prevent an explosion or emission of toxic vapour.

This must be carried out with the shaft in the vertical

position. On some pump sizes a cavity exists in the

impeller bore so on occasions a significant volume of

liquid may drain out.

Always coordinate repair activity with operations and

health and safety personnel, and follow all plant

safety requirements and applicable safety and health

laws and regulations.

1.6.3 Safety action

This is a summary of conditions and actions to

help prevent injury to personnel and damage to

the environment and to equipment. For products

used in potentially explosive atmospheres

section 1.6.4 also applies.

Page 5 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

HOT (and cold) PARTS

DO NOT RUN THE PUMP AT

ABNORMALLY HIGH OR LOW FLOW RATES

Operating at a flow rate higher than normal or at a flow

rate with no back pressure on the pump may overload

the motor and cause cavitation. Low flow rates may

cause a reduction in pump/bearing life, overheating of

the pump, instability and cavitation/vibration.

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.

1.6.4 Products used in potentially explosive

atmospheres

Measures are required to:

Avoid excess temperature

Prevent build up of explosive mixtures

Prevent the generation of sparks

Prevent leakages

If the temperature is greater than 68 ºC (175 ºF) or

below 5 ºC (20 ºF) in a restricted zone, or exceeds

local regulations, action as above shall be taken.

•

HAZARDOUS LIQUIDS

When the pump is handling hazardous liquids care must

be taken to avoid exposure to the liquid by appropriate

siting of the pump, limiting personnel access and by

operator training. If the liquid is flammable and/or

explosive, strict safety procedures must be applied.

Maintain the pump to avoid hazard

The following instructions for pumps and pump units

when installed in potentially explosive atmospheres

must be followed to help ensure explosion protection.

Both electrical and non-electrical equipment must

meet the requirements of European Directive

94/9/EC.

Gland packing must not be used when pumping

hazardous liquids.

PREVENT EXCESSIVE EXTERNAL

PIPE LOAD

1.6.4.1 Scope of compliance

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.

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.

ENSURE CORRECT LUBRICATION

(See section 5, Commissioning, startup, operation

and shutdown.)

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 Certificate/

Declaration of Conformity establishing it is suitable for

the area in which it is to be installed.

START THE PUMP WITH OUTLET

VALVE PARTLY 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. The pump outlet control valve may

need to be adjusted to comply with the duty following

the run-up process. (See section 5, Commissioning

start-up, operation and shutdown.)

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.

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 pump and mechanical seal.

Page 6 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

1.6.4.2 Marking

Temperature classification “Tx” is used when the

liquid temperature varies and the pump could be

installed in different hazarous 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.

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 135 ºC (T4)

If an explosive atmosphere exists during the

Equipment Group

I = Mining

II = Non-mining

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.

Category

2 or M2 = High level protection

3 = normal level of protection

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.

Gas and/or Dust

G = Gas; D= Dust

c = Constructional safety

(in accordance with prEn13463-5)

Avoid mechanical, hydraulic or electrical overload by

using motor overload trips, temperature monitor or a

power monitor and make routine vibration monitoring

checks.

Maximum surface temperature (Temperature Class).

(See section 1.6.4.3.)

1.6.4.3 Avoiding excessive surface temperatures

In dirty or dusty environments, regular checks must

be made and dirt removed from areas around close

clearances, bearing housings and motors.

ENSURE THE EQUIPMENT TEMPERATURE

CLASS IS SUITABLE FOR THE HAZARD ZONE

Pumps have a temperature class as stated in the

ATEX Ex rating on the nameplate. These are based

on a maximum ambient of 40 ºC (104 ºF); refer to

Flowserve for higher ambient temperatures.

1.6.4.4 Preventing the build up of explosive

mixtures

ENSURE THE PUMP IS PROPERLY FILLED

AND VENTED AND DOES NOT RUN DRY

Ensure the pump and relevant suction and discharge

pipeline system is totally filled with liquid at all times

during the pump operation, so that an explosive

atmosphere is prevented. In addition it is essential to

make sure that seal chambers, auxiliary shaft seal

systems and any heating and cooling systems are

properly filled.

The surface temperature on the pump is influenced

by the temperature of the liquid handled. The

maximum permissible liquid temperature depends on

the temperature class and must not exceed the

values in the table that follows.

The temperature rise at the seals and bearings and

due to the minimum permitted flow rate is taken into

account in the temperatures stated.

If the operation of the system cannot avoid this

condition the fitting of an appropriate dry run

protection device is recommended (for example liquid

detection or a power monitor).

Maximum

surface

temperature

permitted

Temperature limit of liquid

handled (* depending on

material and construction

variant - check which is lower)

Temperature

class to

prEN 13463-1

To avoid potential hazards from fugitive emissions of

vapour or gas to atmosphere the surrounding area

must be well ventilated.

85 °C (185 °F)

100 °C (212 °F)

135 °C (275 °F)

200 °C (392 °F)

300 °C (572 °F)

450 °C (842 °F)

Consult Flowserve

115 °C (239 °F) *

180 °C (356 °F) *

275 °C (527 °F) *

400 °C (752 °F) *

1.6.4.5 Preventing sparks

To prevent a potential hazard from mechanical

contact, the coupling guard must be non-sparking

and anti-static for Category 2.

The responsibility for compliance with the

specified maximum liquid temperature is with the

plant operator.

Page 7 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

To avoid the potential hazard from random induced

current generating a spark, the earth contact on the

baseplate must be used.

1.7 Warning labels summary

1.7.1 Nameplate

For details of nameplate, see the Declaration of

Conformity, or separate documentation included with

these User Instructions.

Avoid electrostatic charge: do not rub non-metallic

surfaces with a dry cloth; ensure cloth is damp.

The coupling must be selected to comply with 94/9/EC

and correct alignment must be maintained.

1.7.2 Warning labels

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.

Oil lubricated units only:

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

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.

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.)

Page 8 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

The figures are indicative only, they are subject to a

+3 dB tolerance, and cannot be guaranteed.

1.9 Noise level

When pump noise level exceeds 85 dB(A) attention

must be given to prevailing Health and Safety

Legislation, to limit the exposure of plant operating

personnel to the noise. The usual approach is to

control 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 machines above a

certain power level will exceed 85 dB(A). In such

situations consideration must be given to the fitting of

an acoustic enclosure to meet local regulations.

The values are based on the noisiest ungeared

electric motors that are likely to be encountered.

They represent sound pressure levels at 1 m (3.3 ft)

from the directly driven pump, for "free field over a

reflecting plane".

If a pump unit only has been purchased, for fitting

with your own driver, then the "pump only" noise

levels from the table should be combined with the

level for the driver obtained from the supplier. If the

motor is driven by an inverter it may show an

increase in noise level at some speeds. Consult a

Noise Specialist for the combined calculation.

Pump noise level is dependent on a number of

factors - the type of motor fitted, the operating

capacity, pipework design and acoustic

characteristics of the building. Typical sound

pressure levels measured in dB, and A-weighted are

shown in the table below.

For units driven by equipment other than electric

motors or units contained within enclosures, see the

accompanying information sheets and manuals.

Typical sound pressure level, dBA, L_pAat 1 m reference 20 µPa (L_wAsound power 1 pW where L_pA> 85 dBA)

Motor size

and speed

3550 r/min

2900 r/min

1750 r/min

1450 r/min

Pump and

motor

Pump

only

Pump and

motor

Pump

only

Pump and

motor

Pump

only

Pump and

motor

Pump

only

kW (hp)

dBA

<0.55 (<0.75)

0.75 (1)

1.1 (1.5)

1.5 (2)

71 (88)

74 (91)

66 (83)

68 (85)

70 (87)

72 (89)

74 (91)

75 (92)

77 (94)

78 (95)

80 (97)

83 (100)

85 (102)

86 (103)

87 (104)

88 (105)

90 (107)

91 (108)

92 (109)

64 (81)

67 (84)

70 (87)

71 (88)

74 (91)

75 (92)

83 (100)

84 (101)

85 (102)

93 (110)

95 (112)

96 (113)

62 (79)

64 (81)

66 (83)

68 (85)

70 (87)

71 (88)

73 (90)

74 (91)

76 (93)

79 (96)

81 (98)

82 (99)

83 (100)

84 (101)

86 (103)

87 (104)

88 (105)

64 (81)

67 (84)

70 (87)

71 (88)

74 (91)

75 (92)

76 (93)

77 (94)

78 (95)

80 (97)

81 (98)

84 (101)

86 (103)

88 (105)

90 (107)

91 (108)

62 (79)

64 (81)

66 (83)

68 (85)

70 (87)

71 (88)

73 (90)

74 (91)

76 (93)

79 (96)

80 (97)

81 (98)

83 (100)

84 (101)

85 (102)

86 (103)

90 (107)

63 (80)

65 (82)

66 (83)

68 (85)

70 (87)

71 (88)

72 (89)

73 (90)

74 (91)

76 (93)

77 (94)

80 (97)

82 (99)

83 (100)

85 (102)

86 (103)

62 (79)

64 (81)

66 (83)

68 (85)

70 (87)

71 (88)

72 (89)

73 (90)

75 (92)

76 (93)

77 (94)

78 (95)

79 (96)

80 (97)

81 (98)

83 (100)

86 (103)

88 (105)

74 (91)

77 (94)

2.2 (3)

78 (95)

3 (4)

81 (98)

4 (5)

82 (99)

5.5 (7.5)

7.5 (10)

11 (15)

90 (107)

91 (108)

92 (109)

100 (117)

101 (118)

15 (20)

18.5 (25)

22 (30)

30 (40)

37 (50)

45 (60)

55 (75)

75 (100)

90 (120)

110 (150)

150 (200)

200 (270)

300 (400)

500 (670)

1000 (1300)

1500 (2000)

x Motors in this range are generally job specific and noise levels should be calculated based on actual equipment installed.

For 960 r/min reduce 1450 r/min values by 5 dBA.

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

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.

When there are no specific lifting points on the baseplate

A crane must be used for all pump sets in

excess of 25 kg (55 lb.). Fully trained personnel must

carry out lifting, in accordance with local regulations.

Check any crates, boxes and wrappings for any

accessories or spare parts that may be packed

separately with the equipment or attached to side

walls of the box or equipment.

The driver weight is recorded on its nameplate or

massplate.

2.4 Storage

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.

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.

2.2 Handling

Boxes, crates, pallets or cartons may be unloaded

using fork lift vehicles or slings dependent on their

size and construction.

The pump may be stored as above for up to 6

months. Consult Flowserve for preservative actions

when a longer storage period is needed.

2.3 Lifting

To avoid distortion, the pump unit

should be lifted as shown.

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 that are harmful to the

environment, these should be removed and disposed

of in accordance with current regulations. This also

includes the liquids and or gases that may be used in

the "seal system" or other utilities.

Make sure that hazardous substances are

disposed of safely and that the correct personal

protective equipment is used. The safety

specifications must be in accordance with the current

regulations at all times.

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3.3.5 Bearing housing

Two grease nipples enable grease lubricated bearings

to be replenished between major service intervals.

3 PUMP DESCRIPTION

3.1 Configurations

The 8-UB-1pump is a horizontal split casing two stage

volute type centrifugal pump designed for water works,

drainage, general service and circulating applications. It

can be used with motor, steam turbine and gasoline or

diesel engine drive.

3.3.6 Seal housing

The design enables one of a number of sealing

options to be fitted.

3.3.7 Shaft seal

The mechanical seal(s), attached to the pump shaft, seals

the pumped liquid from the environment. Gland packing

may be fitted as an option.

It has the following horizontal configuration:

3.3.8 Driver

The driver is normally an electric motor. Different drive

configurations may be fitted such as internal combustion

engines, turbines, hydraulic motors etc driving via

couplings, belts, gearboxes, drive shafts etc.

3.3.9 Accessories

Accessories may be fitted when specified by the

customer.

3.2 Name nomenclature

The pump size will be engraved on the nameplate

typically as below:

3.4 Performance and operating limits

This product has been selected to meet the

specifications of your purchase order, see section 1.5.

8-UB- 1

Nominal discharge branch size

The following data is included as additional information to

help with your installation. It is typical, and factors such

as temperature, materials, and seal type may influence

this data. If required, a definitive statement for your

particular application can be obtained from Flowserve.

Configuration – see 3.1 above

The typical nomenclature above is the general guide

to the UB configuration description. Identify the

actual pump size and serial number from the pump

nameplate. Check that this agrees with the

applicable certification provided.

3.4.1 Operating limits

- 20 to + 120 ºC

Pumped liquid temperature limits*

(- 4 to + 250 ºF)

- 20 to + 40 ºC

(- 4 to +104 ºF)

Maximum ambient temperature*

3.3 Design of major parts

up to 3 % by volume

(refer for size limits)

refer to the nameplate

Maximum soft solids in suspension*

3.3.1 Pump casing

Maximum pump speed

The pump has its main casing gasket axial to the

shaft allowing maintenance to the rotating element by

removing the top half casing. Suction and discharge

branches are in the bottom half and therefore remain

undisturbed.

*Subject to written agreement from Flowserve.

3.4.2 Pump and impeller data

Impeller

minimum

passage

size

Nominal

Mean

wear

radial

Pump

size

ring

diameter

mm (in.)

wear ring

clearance

mm (in.) *

3.3.2 Impellers

The impellers are fully shrouded and may be fitted

with optional hub rings.

mm (in.)

8-UB-1

17.5 (0.69)

266.7 (10.5)

0.19 (0.0075)

*May be up to 0.13 mm (0.005 in.) larger if casing ring and impeller

have a tendency to gaul.

3.3.3 Shaft

Nominal diaphragm

bush diameter

mm (in.)

Mean radial

bush clearance

mm (in.)

The large diameter stiff shaft, mounted on bearings,

has a keyed drive end.

Pump

size

8-UB-1

127 (5)

0.11 (0.0045)

3.3.4 Pump bearings and lubrication

Ball bearings are fitted as standard and may be either

oil or grease lubricated.

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4 INSTALLATION

e) If the pump is driven via a universal joint drive

shaft there may be a requirement to offset the

pump shaft with respect to the driver to optimize

the universal joint drive shaft bearing life. This

offset will typically be in the range 0 to 4 degrees

depending on shaft design. Please consult the

separate User Instructions before installation.

f) Any support for the universal joint drive shaft

plummer blocks must not exhibit resonant

frequencies in the range 0.8 to 1.2 N where

N = pump running speed.

Equipment operated in hazardous locations

must comply with the relevant explosion protection

regulations. See section 1.6.4, Products used in

potentially explosive atmospheres.

4.1 Location

The pump should be located to allow room for

access, ventilation, maintenance and inspection with

ample headroom for lifting and should be as close as

practicable to the supply of liquid to be pumped.

g) If not supplied, guarding shall be fitted as

necessary to meet the requirements of EN292

and EN953 and or any applicable local safety

regulations.

Refer to the general arrangement drawing for the

pump set.

4.2 Foundation

4.3 Grouting

Where applicable, grout in the foundation bolts.

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. Ensure the

following are met.

a) The baseplate 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

After adding pipework connections and rechecking

the coupling alignment, the baseplate should then be

grouted in accordance with good engineering

practice. Fabricated steel, cast iron and epoxy

baseplates can be filled with grout. Folded steel

baseplates should be grouted to locate their packing

pieces. If in any doubt, please contact your nearest

service centre for advice.

Grouting provides solid contact between the pump

unit and foundation, prevents lateral movement of

running equipment and dampens resonant vibrations.

supported to maintain the original alignment.)

b) Install the baseplate onto packing pieces evenly

spaced and adjacent to foundation bolts.

Foundation bolts should only be fully tightened when

the grout has cured.

4.4 Initial alignment

4.4.1 Thermal expansion

The pump and motor will normally

have to be aligned at ambient temperature and

should be corrected to allow for thermal expansion at

operating temperature. In pump installations

involving high liquid temperatures, the unit should be

run at the actual operating temperature, shut down

and the alignment checked immediately.

c) Level with shims between baseplate and packing

pieces.

d) The pump and driver have been aligned before

dispatch however the alignment of pump and motor

half coupling must be checked. If this is incorrect, it

indicates that the baseplate has become twisted

and should be corrected by re-shimming.

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4.4.2 Alignment methods

Pumps with thick flanged non-spacer couplings can

be aligned by using a straight-edge across the

outside diameters of the coupling hubs and

measuring the gap between the machined faces

using feeler gauges, measuring wedge or callipers.

Ensure pump and driver are isolated

electrically and the half couplings are disconnected.

The alignment MUST be checked.

When the electric motor has sleeve bearings it is

necessary to ensure that the motor is aligned to run

on its magnetic centreline.

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.

Refer to the motor manual for details.

A button (screwed into one of the shaft ends) is

normally fitted between the motor and pump shaft

ends to fix the axial position.

Alignment is achieved by adding or removing shims

under the motor feet and also moving the motor

horizontally as required. In some cases where the

alignment cannot be achieved it will be necessary to

move the pump before recommencing the above

procedure.

If the motor does not run in its

magnetic centre the resultant additional axial force

may overload the pump thrust bearing.

For couplings with narrow flanges use a dial indicator

as shown below to check both parallel and angular

alignment.

Complete piping as below and see sections 4.6,

Final shaft alignment check up to and including

section 5, Commissioning, startup, operation and

shutdown before connecting driver and checking

actual rotation.

Parallel

4.5 Piping

Protective covers are fitted to the pipe

connections to prevent foreign bodies entering during

transportation and installation. Ensure that these

covers are removed from the pump before connecting

any pipes.

Angular

Maximum permissible misalignment at working

temperature:

4.5.1 Suction and discharge pipework

In order to minimize friction losses and hydraulic

noise in the pipework it is good practice to choose

pipework that is one or two sizes larger than the

pump suction and discharge. Typically main

pipework velocities should not exceed 2 m/s (6 ft/sec)

suction and 3 m/s (9 ft/sec) on the discharge.

Parallel 0.2 mm (0.008 in.) TIR

Angular 0.1 mm (0.004 in.) TIR

When checking parallel alignment, the total indicator

read-out (TIR) shown is twice the value of the actual

shaft displacement.

Take into account the available NPSH, which must be

higher than the required NPSH of the pump.

Align in the vertical plane first, then horizontally by

moving motor. When performing final alignment, check

for soft-foot under the driver. A TIR indicator placed on

the coupling, reading in the vertical direction, should not

indicate more than 0.05 mm (0.002 in.) movement when

any driver foot fastener is loosened.

Never use the pump as a support for

piping.

Maximum forces and moments allowed on the pump

flanges vary with the pump size and type. To minimize

these forces and moments that may, if excessive,

cause misalignment, hot bearings, worn couplings,

vibration and the possible failure of the pump casing,

the following points should be strictly followed:

While the pump is capable of operating with the

maximum misalignment shown above, maximum pump

reliability is obtained by near perfect alignment of 0.05

to 0.10 mm (0.002 to 0.004 in.) TIR parallel and 0.05

mm (0.002 in.) per 100 mm (4 in.) of coupling flange

diameter as TIR angular misalignment. This covers the

full series of couplings available.

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Typical design – flooded suction

•

Prevent excessive external pipe load

Never draw piping into place by applying force to

pump flange connections

Do not mount expansion joints so that their force,

due to internal pressure, acts on the pump flange

Concentric

conical

reducer

Eccentric

conical

reducer

Suction

isolating

valve

Discharge

isolating

valve

Non

return

valve

•

>5D

The table in 4.5.3 summarizes the maximum forces

and moments allowed on horizontal shaft pump

casings.

Slope up from

pump suction

Ensure piping and fittings are flushed

before use.

Note:

Ideally reducers should be limited to one pipe diameter change,

ie 150 mm (6 in.) to 200 mm (8 in.). Must have a maximum total

angle of divergence of 15 degrees.

Ensure piping for hazardous liquids is arranged

to allow pump flushing before removal of the pump.

Typical design – suction lift

4.5.2 Suction piping

Discharge

isolating

valve

Concentric

conical

reducer

Eccentric

conical

reducer

Non

return

valve

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

than the pump inlet bore and pipe bends should

be as large a radius as possible.

Slope down

from pump

suction

>5D

b) Pipework reducers should be conical and have a

maximum total angle of divergence of 15 degrees.

c) On suction lift the piping should be inclined up

towards the pump inlet with eccentric reducers

incorporated to prevent air locks.

Long

radius

bend

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

constant fall towards the pump.

e) Flow should enter the pump suction with uniform

flow, to minimize noise and wear. This is

particularly important on large or high-speed

pumps, which should have a minimum of five

diameters of straight pipe on the pump suction

between the elbow and inlet flange. See section

10.3, Reference 1, for more detail.

Notes:

1. S = Minimum submergence >3E.

2. Ideally reducers to be limited to one pipe diameter change,

ie 150 mm (6 in.) to 200 mm (8 in.). Must have a maximum

total angle of divergence of 15 degrees.

f) Inlet strainers, when used, should have a net `free

area' of at least three times the inlet pipe area.

g) Do not install elbows at an angle other than

perpendicular to the shaft axis. Elbows parallel

to the shaft axis will cause uneven flow.

h) Except in unusual circumstances strainers are

not recommended in inlet piping. If considerable

foreign matter is expected a screen installed at

the entrance to the wet well is preferable.

i) Fitting an isolation valve will allow easier

maintenance.

j) Never throttle pump on suction side and never

place a valve directly on the pump inlet nozzle.

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4.5.3 Maximum forces and moments allowed on the pump suction and discharge flanges of horizontal

shaft pumps

Maximum forces (F) in kN (lbf) and maximum moments (M) in kNm (lbf·ft)

Type and size

Suction

Discharge

7.35

(1653)

5.78

(1299)

4.20

(944)

4.25

(3134)

2.25

(1659)

3.00

(2212)

3.84

(863)

4.40

(989)

3.20

(719)

2.20

(1622)

1.20

(885)

1.60

(1180)

8-UB-1

Notes:

1) F = External force (tension or compression).

M = External moment, clockwise or counter-clockwise.

4.5.5 Auxiliary piping

2) Forces and moments may be applied simultaneously in any

direction.

3) Values apply to all materials.

4) Higher loads may be applicable, if direction and magnitude of

individual loads are known, but these need written approval

from Flowserve Pumps.

4.5.5.1 Drains

Pipe pump casing drains and gland leakage to a

convenient disposal point.

4.5.5.2 Pumps fitted with packed gland

5) Pumps must be on rigid foundations and baseplates must be

fully grouted

When suction pressure is below ambient pressure it

is necessary to feed the gland packing with liquid to

provide lubrication and prevent the ingress of air.

This is normally achieved with a supply from the

pump discharge volute to the stuffing box.

6) Pump/baseplate should not be used as pipe anchor. Suction

and discharge piping should be anchored as close as possible

to the pump flanges to reduce vibration and prevent strain on

the pump casing. Expansion joints are recommended. They

must be properly tied and located on the side of the pipe anchor

away from the pump.

7) The pump mounting bolt torques specified must be used to

prevent relative movement between the pump casing and

baseplate. (See section 6.6, Fastener torques.) The bolt

material must have a minimum yield strength of 600 N/mm²

(87 000 lb/in.²).

If the pumped liquid is dirty and cannot be used for

sealing, a separate clean compatible liquid supply to

the gland at 1 bar (15 psi) above suction pressure is

recommended.

4.5.4 Discharge piping

See section 4.5.2 for typical pipework design.

4.5.5.3 Pumps fitted with mechanical seals

Single seals requiring re-circulation will normally be

provided with the auxiliary piping from pump casing

already fitted.

A non-return valve should be located in the discharge

pipework to protect the pump from excessive back

pressure and hence reverse rotation when the unit is

stopped.

If the seal requires an auxiliary quench then a

connection must be made to a suitable source of

liquid flow, low pressure steam or static pressure from

a header tank. Recommended pressure is 0.35 bar

(5 psi) or less. Check General arrangement drawing.

Pipework reducers should have a maximum total

angle of divergence of 9 degrees.

Fitting an isolation valve will allow easier maintenance.

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Special seals may require different auxiliary piping to

that described above. Consult separate User

Instructions and or Flowserve if unsure of correct

method or arrangement.

If not supplied pre-wired to the pump unit, the

controller/starter electrical details will also be supplied

within the controller/starter.

For electrical details on pump sets with controllers

see the separate wiring diagram.

For pumping hot liquids, to avoid seal damage, it is

recommended that any external flush/cooling supply

be continued after stopping the pump.

See section 5.3, Direction of rotation

before connecting the motor to the electrical supply.

4.5.6 Final checks

Check the tightness of all bolts in the suction and

discharge pipework. Check also the tightness of all

foundation bolts.

4.8 Protection systems

The following protection systems are

recommended particularly if the pump is installed in a

potentially explosive area or is handling a hazardous

liquid. If in doubt consult Flowserve.

4.6 Final shaft alignment check

After connecting piping to the pump, rotate the shaft

several times by hand to ensure there is no binding

and all parts are free.

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.

Recheck the coupling alignment, as previously

described, to ensure no pipe strain. If pipe strain

exists, correct piping.

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.

4.7 Electrical connections

Electrical connections must be made

by a qualified Electrician in accordance with relevant

local, national and international regulations.

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.

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.

To prevent excessive surface temperatures at

bearings it is recommended that temperature or

vibration monitoring are carried out. See sections

5.7.4 and 5.7.5.

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.

5 COMMISSIONING, START-UP,

OPERATION AND SHUTDOWN

These operations must be carried

out by fully qualified personnel.

The motor must be wired up in

accordance with the motor manufacturer's instructions

(normally supplied within the terminal box) including

any temperature, earth leakage, current and other

protective devices as appropriate. The identification

nameplate should be checked to ensure the power

supply is appropriate.

5.1 Pre-commissioning procedure

Pumps and electric motors are supplied pre-greased.

Other drivers and gearboxes, if appropriate, should

be lubricated in accordance with their manuals.

A device to provide emergency stopping must

be fitted.

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5.2 Pump lubricants

5.3 Direction of rotation

Ensure the pump is given the same

rotation as the pump direction arrow cast on the

pump casing.

5.2.1 Recommended grease lubricants

Grease nipples

Grease

NLGI 2 *

NLGI 3 **

Temp. range ºC

(ºF)

-20 to +100

(-4 to +212)

-20 to +100

(-4 to +212)

To avoid dry running the pump must either be filled

with liquid or have the flexible coupling disconnected

before driver is switched on.

Designation

according to DIN

K2K-20

K2K 30

DEA

Elf

Energrease LS2

Glissando 20

Elfmulti 2

Energrease LS3

Glissando 30

Elfmulti 3

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.

Esso

Mobil

Beacon 2

Beacon 3

Mobilux 2

Mobilux 3

5.4 Guarding

Rembrandt 2

Rembrandt 3

Alvania Fett G2

Alvania Fett R2

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.

Shell

Alvania R3

Multilak 20

Multilak EP2

Multilak 30

Multilak EP3

Texaco

Wintershall

(BASF Group)

Wiolub LFK 2

5.5 Priming and auxiliary supplies

SKF

LGMT 2

G55/T

LGMT 3

G56/T

Silkolene

Ensure all electrical, hydraulic,

pneumatic, sealant and lubrication systems (as

applicable) are connected and operational.

* NLGI 2 is an alternative grease and is not to be mixed with other

grades.

** Factory packed bearings for the temperature range with grease

nipples.

Ensure the inlet pipe and pump casing

are completely full of liquid before starting continuous

duty operation.

5.2.2

Lubrication schedule

When grease nipples are fitted, one charge between

grease changes is advisable for most operating

conditions, ie 2 000 hours interval.

5.5.1 Suction pressure above atmospheric

pressure

Horizontal pumps: open vent connection (1) on top of

the pump upper casing to allow the trapped air to

escape. Let liquid run out until free from air bubbles.

Normal intervals between grease changes are 4 000

hours or at least every 6 months.

(1) Possible

priming

The characteristics of the installation and severity of

service will determine the frequency of lubrication.

Lubricant and bearing temperature analysis can be

useful in optimising lubricant change intervals.

points

The bearing temperature may be allowed to rise to

55 °C (131 °F) above ambient but should not exceed

95 °C (204 °F). For most operating conditions a quality

grease having a lithium soap base and NLGI

consistency of No 2 or No 3 is recommended. The

drop point should exceed 175 °C (350 °F).

Never mix greases containing different

bases, thickeners or additives.

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5.5.2 Suction lift with foot valve fitted

Fill suction pipe and casing with liquid at a pressure

of 1 to 2 bar from an external source. Vent as

described in section 5.5.1.

5.7.2 Pumps fitted with packed gland

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 pressurised.

5.5.3 Suction lift without foot valve

The gland must be adjusted evenly to give

visible leakage and concentric alignment of the gland

to avoid excess temperature. 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 re-started. When

the pump is re-started, check to ensure leakage is

taking place at the packed gland.

Pump casing vents on the suction volute must be

connected to an external vacuum pump priming

system. If in doubt please consult Flowserve.

Possible

priming

points

To vacuum

pump

If hot liquids are being pumped it may be necessary

to slacken the gland nuts to achieve leakage.

The pump should be run for 30 minutes with steady

leakage and the gland nuts tightened by 10 degrees

at a time until leakage is reduced to an acceptable

level, normally a minimum of 120 drops per minute is

required. Bedding in of the packing may take another

30 minutes.

5.6 Starting the pump

Care must be taken when adjusting the gland

on an operating pump. Safety gloves are essential.

Loose clothing must not be worn to avoid being

caught up by the pump shaft. Shaft guards must be

replaced after the gland adjustment is complete.

Ensure flushing and/or cooling/

heating liquid supplies are turned ON before

starting the pump.

b) CLOSE the outlet valve.

c) OPEN all inlet valves.

d) Prime the pump.

Never run gland packing dry, even for

a short time.

Ensure all vent connections are closed

before starting.

5.7.3 Pumps fitted with mechanical seal

Mechanical seals require no adjustment. Any slight

initial leakage will stop when the seal is run in.

f) Start motor and check outlet pressure.

g) If the pressure is satisfactory, slowly OPEN outlet

control valve.

Before pumping dirty liquids it is advisable, if

possible, to run in the pump mechanical seal using

clean liquid to safeguard the seal face.

Do not run the pump with the

outlet valve closed for a period longer than 30

seconds.

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

pump. Refer to section 7, Faults; causes and

remedies, for fault diagnosis.

External flush or quench should be

started before the pump is run and allowed to flow for

a period after the pump has stopped.

5.7 Running the pump

Never run a mechanical seal dry,

even for a short time.

5.7.1 Venting the pump

5.7.4 Bearings

Vent the pump to enable all trapped air to

escape taking due care with hot or hazardous liquids.

If the pumps are working in a potentially

explosive atmosphere, temperature or vibration

monitoring at the pump bearings is recommended.

Under normal operating conditions, after the pump

has been fully primed and vented, it should be

unnecessary to re-vent the pump.

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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.

5.8 Stopping and shutdown

Close the outlet valve, but ensure

that the pump runs in this condition for no more

than a few seconds.

•

Record the bearing temperature (t) adjacent to

the bearing 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

b) Stop the pump.

c) Switch off flushing and/or cooling/heating liquid

supplies at a time appropriate to the process.

For prolonged shut-downs and

especially when ambient temperatures are likely

to drop below freezing point, the pump and any

cooling and flushing arrangements must be

drained or otherwise protected.

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. (Refer to section 6.2.3.1

for further information.)

5.9 Hydraulic, mechanical and electrical

duty

This product has been supplied to meet the

performance specifications of your purchase order,

however it is understood that during the life of the

product these may change. The following notes may

help the user decide how to evaluate the implications

of any change. If in doubt contact your nearest

Flowserve office.

5.7.5 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.

5.9.1 Specific gravity (SG)

Pump capacity and total head in metres (feet) do not

change with SG, however pressure displayed on a

pressure gauge is directly proportional to SG. Power

absorbed is also directly proportional to SG. It is

therefore important to check that any change in SG

will not overload the pump driver or over-pressurize

the pump.

Alarm and trip values for installed

pumps should be based on the actual measurements

(N) taken on the pump in the fully commissioned as

new condition. Measuring vibration adjacent to the

pump bearings at regular intervals will then show any

deterioration in pump or system operating conditions.

Vibration velocity – unfiltered

Horizontal

pumps

Vertical

pumps

5.9.2 Viscosity

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

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.

Normal

Alarm

≤ 5.6 (0.22)

≤ 7.1 (0.28)

≤ 11.2 (0.44) ≤ 14.2 (0.56)

≤ 7.1 (0.28)

≤ 9.0 (0.35)

N x 1.25

Shutdown trip N x 2.0

5.7.6 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.

5.9.3 Pump speed

Changing pump speed effects flow, total head, power

absorbed, NPSH_R, 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, NPSH_A> NPSH_R, and

that noise and vibration are within local requirements

and regulations.

Maximum stop/starts

Motor rating kW (hp)

per hour

Up to 15 (20)

Between 15 (20) and 90 (120)

Above 90 (120)

Where duty and standby pumps are installed it is

recommended that they are run alternately every

week.

Page 19 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

5.9.4 Net positive suction head (NPSH_A)

NPSH available (NPSH_A) is a measure of the head

available in the pumped liquid, above its vapour

pressure, at the pump suction branch.

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.

NPSH required (NPSH_R) is a measure of the head

required in the pumped liquid, above its vapour

pressure, to prevent the pump from cavitating. It is

important that NPSH^A> NPSH_R. The margin between

NPSH_A> NPSH_Rshould be as large as possible.

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.

If any change in NPSH_Ais 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.

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".

5.9.5 Pumped flow

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".

Flow must not fall outside the minimum and

maximum continuous safe flow shown on the pump

performance curve and or data sheet.

Never clean equipment with inflammable solvents or

carbon tetrachloride. Protect yourself against toxic

fumes when using cleaning agents.

6 MAINTENANCE

6.1 General

6.2 Maintenance schedule

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.)

It is recommended that a maintenance plan and

schedule is adopted, in line with these User

Instructions. It should include the following:

a) Any auxiliary systems installed must be monitored,

if necessary, to ensure they function correctly.

b) Gland packings must be adjusted correctly to

give visible leakage and concentric alignment of

the gland follower to prevent excessive

Any work on the machine must be performed when it

is at a standstill. It is imperative that the procedure

for shutting down the machine is followed, as

described in section 5.8.

temperature of the packing or follower.

c) Check for any leaks from gaskets and seals. The

correct functioning of the shaft seal must be

checked regularly.

On completion of work all guards and safety devices

must be re-installed and made operative again.

d) Check bearing lubricant level, and if the hours

run show a lubricant change is required.

e) Check that the duty condition is in the safe

operating range for the pump.

f) Check vibration, noise level and surface

temperature at the bearings to confirm

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.

satisfactory operation.

g) Check dirt and dust is removed from areas around

close clearances, bearing housings and motors.

h) Check coupling alignment and re-align if necessary.

If platforms, stairs and guard rails are required for

maintenance, they must be placed for easy access to

areas where maintenance and inspection are to be

carried out.

Page 20 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

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.

Regrease - via grease nipples every 2 000 hours or

sooner depending on the severity of the application.

a) It is important not to under or over grease the

bearings as this will lead to over heating and

premature failure. Grease lubricated bearing

housings have grease nipples fitted in the

bearing brackets.

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.

b) The maximum allowable operating temperatures

for anti friction bearings will vary from unit to unit,

depending on ambient and fluid temperature.

The rise above ambient should not normally

exceed 55 °C (131 °F) or a combined maximum

of 95 °C (204 °F).

c) Contact Flowserve if the problem persists.

6.2.1 Routine inspection (daily/weekly)

c) A continuously rising temperature or an abrupt

temperature rise indicates a problem. If these

symptoms occur, stop the pump immediately and

investigate the cause.

The following checks should be made

and the appropriate action taken to remedy any

deviations:

a) Check operating behaviour. Ensure noise,

vibration and bearing temperatures are normal.

b) Check that there are no abnormal fluid or

lubricant leaks (static and dynamic seals) and

that any sealant systems (if fitted) are full and

operating normally.

c) Check that shaft seal leaks are within acceptable

limits.

d) Check the level and condition of oil lubricant. On

grease lubricated pumps, check running hours

since last recharge of grease or complete grease

change.

TIME

Grease change - every 4 000 hours or sooner

depending on the severity of the application.

a) Remove the bearing bracket from the rotor

assembly.

b) Brush the bearing bracket with hot kerosene (100 to

115 °C/212 to 240 °F) or other non-toxic solvent.

c) Clean and flush out the housing with a light

mineral oil.

e) Check any auxiliary supplies eg. heating/cooling,

if fitted, are functioning correctly.

Refer to the manuals of any associated

equipment for routine checks needed.

6.2.2 Periodic inspection (six monthly)

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.

d) Do not use waste oil to clean the housing.

To clean the bearings:

a) Wipe off as much grease as possible with a clean

lint-free cloth.

Refer to the manuals of any associated

equipment for periodic checks needed.

b) Brush bearings with hot kerosene (80 to 90 °C/

175 to 195 °F) while gently spinning the outer

bearing ring.

6.2.3 Re-lubrication

Lubricant and bearing temperature analysis can be

useful in optimizing lubricant change intervals. In

general however, the following is recommended.

c) Spin each ball to ensure that it is clean.

See section 5.2.1 for grease

recommendations.

Page 21 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

6.3 Spare parts

6.3.1 Ordering of spares

Flowserve keeps records of all pumps that have been

supplied. When ordering spares the following

information should be quoted.

1) Pump serial number.

2) Pump size.

3) Part name – taken from section 8.

4) Part number – taken from section 8.

5) Number of parts required.

To remove badly oxidized grease that refuses to

come off:

The pump size and serial number are shown on the

pump nameplate.

a) Support the rotor in a vertical position and

immerse the bearing in hot kerosene or a mixture

of alcohol and light mineral solvent.

b) Gently spin the bearing outer ring.

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 is

recommended at 6 monthly intervals.

c) Dry and reflush the bearing with clean light oil.

d) It is important not to under or over grease the

bearings as this will lead to over heating and

premature failure. It is recommended that the

bearings be filled with grease using a suitable

spatula. In addition the housings should be no

more than half filled.

6.4 Recommended spares and

consumable items

For start up purposes:

6.2.4 Mechanical seals

No adjustment is possible. When leakage reaches

an unacceptable level the seal will need replacement.

1 - complete set of gland packing

2 - shaft sleeves

1 - set of gaskets and seals

(optional: 2 - mechanical seals)

6.2.5 Gland packing

The stuffing box gland can be backed off for

re-packing or to enable the addition of extra rings of

packing.

For 2 years operation:

1 - set of bearings (line and thrust)

2 - sets of gland packing

2 - shaft sleeves

The stuffing box is normally supplied with a lantern

ring to enable a clean or pressurised flush to the

centre of the packing. If not required, this can be

replaced by an extra 2 rings of packing.

2 - sets of gaskets and seals

2 - lantern rings

2 - casing wear rings

1 – diaphragm bush

(optional: 2 - mechanical seals

2 - impeller wear rings)

There must always be a small leakage, normally a

minimum of 120 drops per minute to atmosphere to

lubricate and cool the packing is required.

For 4 years operation:

1 - set of bearings (line and thrust)

2 - sets of gland packing

2 - shaft sleeves

2 - sets of gaskets and seals

2 - lantern rings

2 - casing wear rings

Page 22 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

1 – impeller

To dismantle the pump consult the sectional

1 – diaphragm bush

drawings. See section 8, Parts lists and drawings.

(optional: 2 - mechanical seals

2 - impeller wear rings)

a) Isolate motor and lock off electrical supply in

accordance with local regulations.

b) Isolate suction and discharge valves.

c) Remove coupling guards and disconnect the

coupling halves.

d) Drain pump casing. Remove any auxiliary piping

if applicable.

6.5 Tools required

A typical range of tools that will be required to

maintain these pumps is listed below.

Readily available in standard tool kits, and dependent

on pump size:

e) Release the copper lockwasher securing the

coupling nut and remove the pump half coupling.

f) Unbolt the glands/seal covers from the casing.

If glands are split type, remove completely.

g) With a suitable punch, drive out the two locating

dowels which are used on the horizontal split

flange to align the upper and lower half casings.

h) Remove the bolts, which hold the upper and lower

half of the casing together, and remove the upper

half. Tapped holes are provided in the joint flange

to enable the use of forcing bolts to loosen the joint.

i) Lift the casing upper half using the two eye bolts

provided.

•

Open ended spanners (wrenches) to suit up to

M 24 (⁷/₈in.) screws/nuts

•

Socket spanners (wrenches), up to M 24 (⁷/₈in.)

screws

•

Allen keys, up to 6 mm (¼ in.) A/F

Range of screwdrivers

Soft mallet

More specialized equipment:

•

Bearing pullers

Bearing induction heater

Dial test indicator

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

(If difficulties in sourcing are encountered, consult

Flowserve.)

Do NOT use this method to lift the bottom

half or complete pump casing.

j) Remove the 6 – screws securing each bearing

bracket to the bottom half casing.

k) Lift out rotor assembly. Use care in slinging,

handling and supporting of the rotor for

subsequent dismantling. Place rotor securely on

two support blocks.

l) When removing the rotor assembly, the casing rings

and diaphragm plate will be loosely attached to the

rotor.

6.6 Fastener torques

Torque Nm (lbf·ft)

Bolt size

Pump feet

All other

fasteners

M8 (⁵/₁₆in.)

M10 (⅜ in.)

M12 (½ in.)

M16 (⅝ in.)

M20 (¾ in.)

M24 (⅞ in.)

10 (7)

20 (15)

63 (46)

170 (125)

340 (250)

590 (435)

34 (25)

84 (62)

165 (120)

285 (210)

m) Remove bearing covers and slide bearing housings

off bearings.

n) Release the copper lockwasher securing the

bearing locknut at the non-drive end and remove the

locknut. Pull off both ball bearings using a suitable

puller; ensuring force is applied to inner race only.

Retain the bearing distance pieces and coupling

distance piece for future use. Remove the bearing

covers.

6.7 Renewal clearances

As wear takes place between the impeller, casing ring

and diaphragm bush the overall efficiency of the pump

set will decrease. To maintain optimum efficiency it is

recommended that rings and bush are replaced and the

impeller renovated when the radial clearance detailed in

section 3.4.2 has doubled.

o) Depending on configuration remove glands/seal

covers, packing and lantern ring/mechanical seal.

6.8 Disassembly

Refer to any special instructions supplied

with the mechanical seal.

Refer to section 1.6, Safety, before dismantling

the pump.

p) Remove the two socket head screws securing

each shaft sleeve nut. Using C-spanner remove

shaft nuts. Slide off shaft sleeves.

Before dismantling the pump for

overhaul, ensure genuine Flowserve replacement

parts are available.

Page 23 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

q) Remove impellers, casing rings, diaphragm plate

complete with its bush together with the impeller

key.

d) Bearing seals are not totally leak free devices.

Oil from these may cause staining adjacent to the

bearings.

If impellers prove difficult to remove, the

use of heat is permissible. Refer to Section 1.6,

Safety, APPLYING HEAT TO REMOVE

6.10 Assembly

To assemble the pump consult the sectional

drawings, see section 8, Parts list and drawings.

IMPELLER, for more details.

r) If it is required to remove the diaphragm plate

bush then remove the 4 countersunk screws and

push out the bush.

s) If impeller rings are also fitted, they are shrunk

onto the impeller and fixed with locking screws

between their diametric mating surfaces.

t) To remove the impeller rings, remove the locking

screws and heat up the ring until it slides off easily.

Ensure threads, gasket and O-ring mating faces are

clean. Apply thread sealant to non-face sealing pipe

thread fittings. Coat the outside diameter of the dowel

bushings with pipe compound prior to installation.

6.10.1 Impeller wear rings

a) Impeller rings (when fitted) should be heated up

to approximately 100 ºC (212 ºF) using a hotplate

or hot oil bath and then slipped onto the impeller

and pressed down to the shoulder. (Do NOT use

a steel hammer to knock them into position.)

b) Drill and tap 3 holes approximately 120 degrees

apart into the diametral mating faces of the ring

and impeller and insert socket head screws.

(The existing half tapped holes from the removed

impeller ring cannot be re-used.)

6.9 Examination of parts

Used parts must be inspected before

assembly to ensure the pump will subsequently run

properly.

In particular, fault diagnosis is essential to enhance

pump and plant reliability.

6.9.1 Casing, seal housing and impeller

a) Inspect for excessive wear, pitting, corrosion,

erosion or damage and any sealing surface

irregularities.

b) Replace as necessary.

6.9.2 Shaft and sleeve (if fitted)

Replace if grooved, pitted or worn.

6.10.2 Pre-assembly of casing gasket

a) Fit casing gasket to the bottom half horizontal

flange using a small amount of contact adhesive

to prevent movement when the top half is fitted.

Do not apply adhesive to the top surface of the

gasket.

b) It is important that the external corner of the

casing gasket face and the stuffing box face is as

sharp as possible.

6.9.3 Gaskets and O-rings

After dismantling, discard and replace.

6.9.4 Bearings

It is recommended that bearings are not re-used after

any removal from the shaft.

6.9.5 Bearing isolators, labyrinths or lip seals

(if fitted)

a) The lubricant, bearings and bearing housing

seals are to be inspected for contamination and

damage.

b) If bearing damage is not due to normal wear and

the lubricant contains adverse contaminants, the

cause should be corrected before the pump is

returned to service.

c) Labyrinth seals and bearing isolators should be

inspected for damage but are normally non-

wearing parts and can be re-used.

Do not chamfer with a file.

c) If necessary trim gasket to match volute profile.

Do not trim to stuffing box face at this stage.

6.10.3 Rotating element and bearing bracket

a) Ensure all gaskets and O-rings are renewed and

replaced in the correct position during assembly.

b) Assemble the impellers on the shaft. It is

important to mount the impellers so that the vane

tips point away from the apparent flow direction.

Page 24 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

The bearings must be heated up to 100 ºC (212 ºF)

using a hot plate, oil bath or induction heater and

slid onto the shaft. Ensure bearing is fully seated

against the bearing distance piece and the distance

piece is located up to the shaft shoulder.

j) Fill both sides of bearing with grease.

k) Fit the bearing lockwasher and tighten the

bearing shaft nut.

l) Peen a segment of the copper lockwasher over a

flat on the bearing locknut.

m) Slip casing rings, loosely over the impeller hubs.

n) Slide the bearing housings over the bearings.

Ensure bearings are located square in the

bracket bore.

o) One third fill the space between bearing cover

and bearing with grease. Secure bearing cover,

complete with gasket.

p) Fit the coupling distance piece and pump half

coupling. Fit copper lockwasher and secure

coupling nut. Peen a segment of the copper

lockwasher over a flat on the coupling nut.

The rotor always rotates towards the expanding

section of the volute

c) The diaphragm plate complete with its bush must

be fitted on to the shaft between the two impellers.

d) Fit the two shaft sleeves, O-rings (when fitted)

and shaft nuts and lightly secure the impellers on

the shaft. Take care to protect the sleeve O-rings

(when fitted) from damage on the shaft threads.

The sleeves and nuts define the impeller position

on the pump shaft and hence in the pump casing.

Initially position the impellers centrally on its

keyway. This position may be adjusted slightly

later on in the assembly process.

e) It is recommended that gasket sealing compound

Loctite 574 or equivalent is used between sleeve

and impeller mating faces to protect the shaft

from the liquid pumped.

f) When mechanical seals are fitted the rotating

parts can be slid onto the sleeves before the

sleeves are fitted onto the shaft. The seal locking

collars should be left loose.

6.10.4 Casing lower half

a) If required, drive in two new locating dowels on

the horizontal flange.

b) Coat the faces of the bearing housing brackets

with liquid sealant to protect against corrosion.

c) Place the complete rotating assembly into the

casing ensuring that impeller rings and diaphragm

plate are in the correct position to allow the anti-

rotation tongues to locate correctly in the anti-

rotation grooves in the casing bores.

Refer to any special instructions supplied

The anti-rotation grooves in the bottom

half casing are bigger in diameter than those in

the top.

with the mechanical seal.

g) If gland packing is used fit the glands.

h) Fit seal covers complete with seal seat, water

throwers and bearing covers complete with

gaskets.

i) Fit the bearings onto the shaft. The main thrust

bearing is at the non-drive end.

d) Locate the bearing housings in the machined

spigots in the casing and torque up the fixing

screws.

e) Check rotor for free rotation.

f) Centralize the impellers within the casing

waterway by adjusting the shaft nut, if necessary.

Using a C-spanner fully tighten the shaft nuts and

lock with the two radial socket head screws.

g) Set the seals, if fitted, to the correct working

length and tighten the seal collar screws.

Where double row bearings are fitted

these must be assembled 'back to back' as below:

Refer to any special instructions supplied

with the mechanical seal.

h) Check for free rotation.

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

6.10.5 Casing upper half

a) Assemble the casing upper half over the lower

half. Take care to ensure the renewable rings and

diaphragm plate are correctly located in the upper

half bores and that dowel holes pick up the

locating dowels in the lower half.

b) Tap horizontal flange over locating dowels to

accurately position the top half casing and torque

up all horizontal flange bolts.

c) Check for free rotation.

d) Using a sharp flexible-bladed knife, cut off the

exposed casing gasket in the stuffing box area

flush with the stuffing box face.

e) If mechanical seals are fitted apply a small amount

of silicon rubber sealant along the horizontal joint

line on the stuffing box face and fit seal cover

complete with gasket or O-ring. Take care not to

damage O-ring, if fitted, and locate cover squarely

on stuffing box face.

f) Torque up seal cover bolts and check shaft/sleeve

does not rub on seal cover or stationary seal seat

bore. Ensure any spare holes in mechanical seal

cover, particularly on cartridge seals, have sealing

plugs fitted.

g) If gland packing is fitted pack the gland, ensuring

that the cut ends in each ring are staggered by

120 degrees. The glands are packed as shown on

the relevant drawings in Sections 8.1 to 8.3.

Finger tighten the gland nuts.

h) Check coupling alignment, fit coupling drive

element(s) and fit guards.

i) Pipe up any external auxiliary connections.

j) Check for free rotation.

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

7 FAULTS; CAUSES AND REMEDIES

FAULT SYMPTOM

Pump overheats and seizes

Bearings have short life

⇓

Pump vibrates or is noisy

⇓

Mechanical seal has short life

⇓

Mechanical seal leaks excessively

⇓

Pump requires excessive power

⇓

Pump loses prime after starting

⇓

Insufficient pressure developed

⇓

Insufficient capacity delivered

⇓

Pump does not deliver liquid

⇓

PROBABLE CAUSES

POSSIBLE REMEDIES

A. SYSTEM TROUBLES

Pump not primed.

Check complete filling.

Pump or suction pipe not completely filled with

liquid.

Check and complete filling.

Check NPSH_A>NPSH_R, proper submergence,

losses at strainers and fittings.

Suction lift too high or level too low.

Excessive amount of air or gas in liquid.

Air or vapour pocket in suction line.

Air leaks into suction line.

Check and purge from pipes.

Check suction line design for pockets.

Check airtight pipe then joints and gaskets.

Air leaks into pump through mechanical seal,

sleeve joints, casing joint or pipe lugs.

Check airtight assembly then joints and gaskets.

Foot valve too small.

Investigate replacing the foot valve.

Clean foot valve.

Foot valve partially clogged.

Inlet of suction pipe insufficiently submerged.

Check cut out system design.

Check discharge head and head losses in

discharge pipe at the valve settings. Check back

pressure is not too high.

Total head of system higher than differential head

of pump.

Total head of system lower than pump design

head.

Throttle at discharge valve or ask Flowserve if the

impeller can be trimmed.

Specific gravity of liquid different from design.

Viscosity of liquid differs from design.

Operation at very low capacity.

Consult Flowserve.

Measure value and check minimum permitted.

Measure value and check maximum permitted.

Operation at high capacity.

B. MECHANICAL TROUBLES

Check the flange connections and eliminate

strains using elastic couplings or a method

permitted.

Misalignment due to pipe strain.

Check setting of baseplate: tighten, adjust, grout

base as required.

Improperly designed foundation.

Shaft bent.

Check shaft runouts within acceptable values.

Check for signs of this and consult Flowserve if

necessary.

Rotating part rubbing on stationary part internally.

Bearings worn

Replace bearings.

Wearing ring surfaces worn.

Replace worn wear ring/surfaces.

Page 27 of 32

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

FAULT SYMPTOM

Pump overheats and seizes

Bearings have short life

⇓

Pump vibrates or is noisy

⇓

Mechanical seal has short life

⇓

Mechanical seal leaks excessively

⇓

Pump requires excessive power

⇓

Pump loses prime after starting

⇓

Insufficient pressure developed

⇓

Insufficient capacity delivered

⇓

Pump does not deliver liquid

⇓

PROBABLE CAUSES

POSSIBLE REMEDIES

Impeller damaged or eroded.

Replace impeller and check reason.

Replace joint and check for damage.

Leakage under sleeve due to joint failure.

Check alignment of faces or damaged parts and

assembly method used.

Mechanical seal improperly installed.

Incorrect type of mechanical seal for operating

conditions.

Consult Flowserve

Check misalignment and correct if necessary.

If alignment satisfactory check bearings for

excessive wear.

Shaft running off centre because of worn

bearings or misalignment.

Impeller out of balance resulting in vibration.

Abrasive solids in liquid pumped.

Check and consult Flowserve.

Check mechanical seal condition and source of

dry running and repair.

Mechanical seal was run dry.

Internal misalignment due to improper repairs

causing impeller to rub.

Check method of assembly, possible damage or

state of cleanliness during assembly.

Excessive thrust caused by a mechanical failure

inside the pump.

Check wear condition of impeller, its clearances

and liquid passages.

Excessive grease in ball bearings.

Lack of lubrication for bearings.

Check method of regreasing.

Check hours run since last change of lubricant,

the schedule and its basis.

Check method of assembly, possible damage or

state of cleanliness during assembly and type of

bearing used.

Improper installation of bearings.

Check contamination source and replace

damaged bearings.

Damaged bearings due to contamination.

C. ELECTRICAL TROUBLES

Wrong direction of rotation.

Motor running too slow.

Reverse 2 phases on motor terminal box.

Check motor terminal box connections.

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

8 PARTS LISTS AND DRAWINGS

8.1 Sectional drawings – 8-UB-1 grease lubricated, gland packed

15A

3205

'Z'

20A

2350

Taken from A767/112

8.1.1 Parts list

15A

Casing wear ring

Diaphragm plate

Diaphragm bush

Impeller – first stage

Impeller – second stage

Key – impeller

Seal pipe assembly

Shaft sleeve

Shaft nut

Water shield

Bearing cover

Gasket – bearing cover

Ball bearing – line

Grease nipple

Shaft

Key – coupling

Bearing distance piece

Coupling distance piece

Coupling nut

Ref. no. Description

Nameplate

Bearing locknut

Lockwasher – bearing locknut

Ball bearing - thrust

Shaft collar

Gland

Lantern ring

Gland packing

Bearing bracket – Drive end

Bearing bracket – Non-drive end

Socket head screw for 19 & 38

Casing – upper half

Casing – lower half

Gasket – horizontal split

20A

Lockwasher – for coupling nut

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

8.1.2 Options

8.1.3 Options parts list

Ref. no. Description

Mechanical seal

Mechanical seal cover

Gasket – mechanical seal cover

Socket head screw for 38 (a)

Seal abutment ring (a)

Cartridge seal assembly

Impeller nut

Impeller wear ring

Socket head screw for 45

View on ‘Z’ impeller ring

a) When fitted, depends on type of mechanical seal.

8.2 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.

Component mechanical seal

Cartridge mechanical seal

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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

9 CERTIFICATION

Certificates determined from the Contract requirements

are provided with these Instructions where applicable.

Examples are certificates for CE marking, ATEX

marking etc. If required, copies of other certificates sent

separately to the Purchaser should be obtained from

the Purchaser for retention with these User Instructions.

10 OTHER RELEVANT

DOCUMENTATION AND MANUALS

10.1 Supplementary User Instructions

Supplementary instructions such as for a driver,

instrumentation, controller, seals, sealant system etc

are provided as separate documents in their original

format. If further copies of these are required they

should be obtained from the supplier for retention

with these User Instructions.

10.2 Change notes

If any changes, agreed with Flowserve Pump Division,

are made to the product after its supply, a record of the

details should be maintained with these User Instructions.

10.3 Additional sources of information

Reference 1:

NPSH for Rotordynamic Pumps: a reference guide,

Europump Guide No. 1, Europump & World Pumps,

Elsevier Science, United Kingdom, 1999.

Reference 2:

Pumping Manual, 9^thedition, T.C. Dickenson,

Elsevier Advanced Technology, United Kingdom, 1995.

Reference 3:

Pump Handbook, 2^ndedition, 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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UB USER INSTRUCTIONS ENGLISH 71569247 07-04

FLOWSERVE

REGIONAL SALES OFFICES:

USA and Canada

Latin America and Caribbean

Flowserve Corporation (Pump Division)

5215 North O’Connor Blvd. Suite 2300

Irving, Texas 75039, USA

Flowserve Corporation (Pump Division)

6840 Wynnwood Lane

Houston, Texas 77008, USA

Tel +1 972 443 6500

Toll free 800 728 PUMP (7867)

Fax +1 972 443 6800

Tel +1 713 803 4434

Fax +1 713 803 4497

Europe, Middle East and Africa

Flowserve Limited (Pump Division)

Harley House, 94 Hare Lane

Claygate, Esher, Surrey KT10 0RB

United Kingdom

Asia Pacific

Flowserve Pte Ltd (Pump Division)

200 Pandan Loop, 06-03/04

Pantech 21, Singapore 128388

Tel +65 775 3003

Fax +65 779 4607

Tel +44 (0)1372 463 700

Fax +44 (0)1372 460 190

Visit our web site at: www.flowserve.com

Your Flowserve factory contact:

Your local Flowserve representative:

Flowserve Pumps Limited

PO Box 17, Newark

Notts NG24 3EN

United Kingdom

Telephone (24 hours) +44 (0)1636 494 600

Sales & Admin Fax +44 (0)1636 705 991

Repair & Service Fax +44 (0)1636 494 833

E.mail [email protected]

To find your local Flowserve representative, please

use the Sales Support Locator System found at

www.flowserve.com

Page 32 of 32

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