KSB UPA Installation instructions

Submersible Borehole Pump
UPA, UPZ, BSX
With Motors of 1000V Supply Voltage and Above
50 Hz, 60 Hz
Installation/Operating Manual

Legal information/Copyright
Installation/Operating Manual UPA, UPZ, BSX
Original operating manual
All rights reserved. The contents provided herein must neither be distributed, copied, reproduced,
edited or processed for any other purpose, nor otherwise transmitted, published or made available to a
third party without the manufacturer's express written consent.
Subject to technical modification without prior notice.
© KSB SE & Co. KGaA, Frankenthal 01/12/2020

Contents
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Contents
Glossary .................................................................................................................................................. 5
1 General.................................................................................................................................................... 6
1.1 Principles ...........................................................................................................................................................6
1.2 Target group.....................................................................................................................................................6
1.3 Other applicable documents............................................................................................................................6
1.4 Symbols .............................................................................................................................................................7
1.5 Key to safety symbols/markings.......................................................................................................................7
2 Safety...................................................................................................................................................... 8
2.1 General..............................................................................................................................................................8
2.2 Intended use .....................................................................................................................................................8
2.3 Personnel qualification and training...............................................................................................................9
2.4 Consequences and risks caused by non-compliance with this manual .........................................................9
2.5 Safety awareness ..............................................................................................................................................9
2.6 Safety information for the operator/user.......................................................................................................9
2.7 Safety information for maintenance, inspection and installation ..............................................................10
2.8 Unauthorised modes of operation................................................................................................................10
3 Transport/Storage/Disposal ................................................................................................................ 11
3.1 Checking the condition upon delivery..........................................................................................................11
3.2 Transport.........................................................................................................................................................11
3.2.1 Pulling the pump/motor/pump set upright......................................................................................13
3.3 Storage/preservation......................................................................................................................................14
3.4 Return to supplier...........................................................................................................................................15
3.5 Disposal ...........................................................................................................................................................15
4 Description of the Pump (Set)............................................................................................................. 16
4.1 General description ........................................................................................................................................16
4.2 Product information as per Regulation No. 1907/2006(REACH).................................................................16
4.3 Designation.....................................................................................................................................................16
4.4 Name plate......................................................................................................................................................17
4.5 Design details..................................................................................................................................................17
4.6 Configuration and function...........................................................................................................................19
4.7 Scope of supply...............................................................................................................................................19
4.8 Dimensions and weights ................................................................................................................................20
5 Installation at site ................................................................................................................................ 21
5.1 General information/Safety regulations .......................................................................................................21
5.2 Preparing the installation ..............................................................................................................................22
5.2.1 Checking the installation conditions ................................................................................................22
5.2.2 Checking the installation position ...................................................................................................23
5.2.3 Checking the motor fill......................................................................................................................24
5.2.4 Installing water storage tanks...........................................................................................................26
5.2.5 Preventing backflow..........................................................................................................................27
5.2.6 Calculating the total weight .............................................................................................................27
5.2.7 Electric wiring.....................................................................................................................................27
5.2.8 Measuring the insulation resistance .................................................................................................28
5.3 Installing the pump set in vertical position ..................................................................................................29
5.3.1 Attaching the cable ties.....................................................................................................................31
5.4 Installing the pump set in a horizontal position ..........................................................................................32
5.4.1 Installing the pump set on supporting frame and pedestal ...........................................................32
5.4.2 Installing the pump set in a suction, pressure or cooling shroud ...................................................33
5.5 Installing the pump set in an angled position..............................................................................................33
5.6 Information on electrical connection............................................................................................................34
5.6.1 Operation with autotransformers and starting resistors ................................................................34
5.6.2 Operation with soft starter ...............................................................................................................34

Contents
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5.6.3 Operation on a frequency inverter...................................................................................................35
5.7 Electrical connection ......................................................................................................................................36
5.7.1 Recommended: monitoring equipment and protective equipment ..............................................38
5.7.2 Connecting the temperature monitoring equipment .....................................................................39
6 Commissioning/Start-up/Shutdown................................................................................................... 41
6.1 Commissioning/Start-up.................................................................................................................................41
6.1.1 Start-up...............................................................................................................................................41
6.1.2 Checking the direction of rotation ...................................................................................................42
6.2 Operating limits..............................................................................................................................................43
6.2.1 Frequency of starts.............................................................................................................................43
6.2.2 Power supply......................................................................................................................................43
6.2.3 Fluid handled .....................................................................................................................................43
6.3 Shutdown........................................................................................................................................................46
7 Servicing/Maintenance........................................................................................................................ 47
7.1 Servicing/inspection........................................................................................................................................47
7.2 Removing the pump set from the piping .....................................................................................................47
7.3 Separating pump and motor .........................................................................................................................48
7.4 Motor fill.........................................................................................................................................................49
7.4.1 Filling/topping up the motor ............................................................................................................51
7.5 Storage and preservation...............................................................................................................................52
7.5.1 Storing new submersible borehole pumps.......................................................................................52
7.5.2 Storing submersible borehole pumps that have been removed from the system.........................52
7.6 Reassembling the pump set...........................................................................................................................53
7.6.1 Mounting the motor..........................................................................................................................53
7.6.2 Tightening torques ............................................................................................................................54
8 Trouble-shooting.................................................................................................................................. 55
9 Related Documents.............................................................................................................................. 57
9.1 General drawings with list of components...................................................................................................57
9.1.1 General assembly drawing of UPA 250 submersible borehole pump ............................................57
9.1.2 General assembly drawing: submersible motor V, X .......................................................................59
9.2 Mating dimensions for motors V, X, Z, E ......................................................................................................61
9.3 Mating dimensions for motor T.....................................................................................................................62
10 EU Declaration of Conformity............................................................................................................. 63
11 Certificate of Decontamination........................................................................................................... 64
Index ..................................................................................................................................................... 65

Glossary
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Glossary
Certificate of decontamination
A certificate of decontamination is enclosed by the
customer when returning the product to the
manufacturer to certify that the product has been
properly drained to eliminate any environmental
and health hazards arising from components in
contact with the fluid handled.

1 General
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1 General
1.1 Principles
This manual applies to the type series and variants indicated on the front cover (see
details listed below).
Pump sizes ▪UPA 250C
▪UPA 300
▪UPA 350
▪UPZ
▪BSX
▪BRY
▪BRZS
▪BRE
▪BSF
Motor sizes ▪T
▪V
▪X
▪Z
▪E
The operating manual describes the proper and safe use of this equipment in all
phases of operation.
The name plate indicates the type series and size, the main operating data, the order
number and the order item number. The order number and order item number
uniquely identify the pump (set) and serve as identification for all further business
processes.
In the event of damage, immediately contact your nearest KSB service facility to
maintain the right to claim under warranty.
1.2 Target group
This operating manual is aimed at the target group of trained and qualified specialist
technical personnel. (ðSection2.3,Page9)
1.3 Other applicable documents
Table1: Overview of other applicable documents
Document Contents
Data sheet Description of the technical data of the pump (set)
General arrangement drawing/
outline drawing
Description of mating and installation dimensions
for the pump (set), weights
Hydraulic characteristic curve Characteristic curves showing head, NPSH
required, efficiency and power input
General assembly drawing1) Sectional drawing of the pump
Sectional drawing of the motor
Sub-supplier product literature1) Operating manuals and other product literature
describing accessories and integrated machinery
components
Spare parts lists1) Description of spare parts
Operating manual for
accessories1)
Description of accessories, e.g. cable connector
1If agreed to be included in the scope of supply

1 General
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For accessories and/or integrated machinery components observe the relevant
manufacturer's product literature.
1.4 Symbols
Table2: Symbols used in this manual
Symbol Description
✓Conditions which need to be fulfilled before proceeding with the
step-by-step instructions
⊳Safety instructions
⇨Result of an action
⇨Cross-references
1.
2.
Step-by-step instructions
Note
Recommendations and important information on how to handle
the product
1.5 Key to safety symbols/markings
Table3: Definition of safety symbols/markings
Symbol Description
!DANGER
DANGER
This signal word indicates a high-risk hazard which, if not avoided,
will result in death or serious injury.
!WARNING
WARNING
This signal word indicates a medium-risk hazard which, if not
avoided, could result in death or serious injury.
CAUTION
CAUTION
This signal word indicates a hazard which, if not avoided, could
result in damage to the machine and its functions.
Explosion protection
This symbol identifies information about avoiding explosions in
potentially explosive atmospheres in accordance with EU Directive
2014/34/EU (ATEX).
General hazard
In conjunction with one of the signal words this symbol indicates a
hazard which will or could result in death or serious injury.
Electrical hazard
In conjunction with one of the signal words this symbol indicates a
hazard involving electrical voltage and identifies information about
protection against electrical voltage.
Machine damage
In conjunction with the signal word CAUTION this symbol indicates
a hazard for the machine and its functions.

2 Safety
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2 Safety
!DANGER
All the information contained in this section refers to hazardous situations.
In addition to the present general safety information the action-related safety
information given in the other sections must be observed.
2.1 General
▪This operating manual contains general installation, operating and maintenance
instructions that must be observed to ensure safe operation of the system and
prevent personal injury and damage to property.
▪Comply with all the safety instructions given in the individual sections of this
operating manual.
▪The operating manual must be read and understood by the responsible specialist
personnel/operators prior to installation and commissioning.
▪The contents of this operating manual must be available to the specialist
personnel at the site at all times.
▪Information and markings attached directly to the product must always be
complied with and kept in a perfectly legible condition at all times. This applies
to, for example:
– Arrow indicating the direction of rotation
– Markings for connections
– Name plate
▪The operator is responsible for ensuring compliance with all local regulations not
taken into account.
2.2 Intended use
▪The pump (set) must only be operated in the fields of application and within the
use limits specified in the other applicable documents.
▪Only operate pumps/pump sets which are in perfect technical condition.
▪Do not operate the pump (set) in partially assembled condition.
▪Only use the pump to handle the fluids described in the data sheet or product
literature of the pump model or variant.
▪Never operate the pump without the fluid to be handled.
▪Never operate the motor without fill liquid.
▪Observe the minimum flow rates indicated in the data sheet or product literature
(to prevent overheating, bearing damage, etc).
▪Observe the minimum flow rate and maximum flow rate indicated in the data
sheet or product literature (to prevent overheating, mechanical seal damage,
cavitation damage, bearing damage, etc.).
▪Do not throttle the flow rate on the suction side of the pump (to prevent
cavitation damage).
▪Do not let the motor run in the wrong direction of rotation for more than two
minutes.
▪Consult the manufacturer about any use or mode of operation not described in
the data sheet or product literature.
Prevention of foreseeable misuse
▪Never open the discharge-side shut-off elements further than permitted.
– The maximum flow rates specified in the product literature or data sheet
would be exceeded.
– Risk of cavitation damage
▪Never exceed the permissible application and operating limits specified in the
data sheet or product literature regarding pressure, temperature, etc.
▪Observe all safety information and instructions in this manual.

2 Safety
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2.3 Personnel qualification and training
All personnel involved must be fully qualified to transport, install, operate, maintain
and inspect the machinery this manual refers to.
The responsibilities, competence and supervision of all personnel involved in
transport, installation, operation, maintenance and inspection must be clearly
defined by the operator.
Deficits in knowledge must be rectified by means of training and instruction
provided by sufficiently trained specialist personnel. If required, the operator can
commission the manufacturer/supplier to train the personnel.
Training on the pump (set) must always be supervised by technical specialist
personnel.
2.4 Consequences and risks caused by non-compliance with this manual
▪Non-compliance with these operating instructions will lead to forfeiture of
warranty cover and of any and all rights to claims for damages.
▪Non-compliance can, for example, have the following consequences:
– Hazards to persons due to electrical, thermal, mechanical and chemical
effects and explosions
– Failure of important product functions
– Failure of prescribed maintenance and servicing practices
– Hazard to the environment due to leakage of hazardous substances
2.5 Safety awareness
In addition to the safety information contained in this operating manual and the
intended use, the following safety regulations shall be complied with:
▪Accident prevention, health regulations and safety regulations
▪Explosion protection regulations
▪Safety regulations for handling hazardous substances
▪Applicable standards, directives and laws
2.6 Safety information for the operator/user
▪Fit protective equipment (e.g. contact guards) supplied by the operator for hot,
cold or moving parts, and check that the equipment functions properly.
▪Do not remove any protective equipment (e.g. contact guards) during operation.
▪Provide the personnel with protective equipment and make sure it is used.
▪Contain leakages (e.g. at the shaft seal) of hazardous fluids handled (e.g.
explosive, toxic, hot) so as to avoid any danger to persons and the environment.
Adhere to all relevant laws.
▪Eliminate all electrical hazards. (In this respect refer to the applicable national
safety regulations and/or regulations issued by the local energy supply
companies.)
▪If shutting down the pump does not increase potential risk, fit an emergency-
stop control device in the immediate vicinity of the pump (set) during pump set
installation.

2 Safety
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2.7 Safety information for maintenance, inspection and installation
▪Modifications or alterations of the pump (set) are only permitted with the
manufacturer's prior consent.
▪Use only original spare parts or parts/components authorised by the
manufacturer. The use of other parts/components can invalidate any liability of
the manufacturer for resulting damage.
▪The operator ensures that maintenance, inspection and installation are
performed by authorised, qualified specialist personnel who are thoroughly
familiar with the manual.
▪Any work on the product shall only be performed when it has been disconnected
from the power supply (de-energised).
▪Carry out work on the product during standstill only.
▪As soon as the work has been completed, re-install and re-activate any safety-
relevant devices and protective devices. Before returning the product to service,
observe all instructions on commissioning. (ðSection6.1,Page41)
2.8 Unauthorised modes of operation
Never operate the pump (set) outside the limits stated in the data sheet and in this
manual.
The warranty relating to the operating reliability and safety of the supplied pump
(set) is only valid if the equipment is used in accordance with its intended use.

3 Transport/Storage/Disposal
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3 Transport/Storage/Disposal
3.1 Checking the condition upon delivery
1. On transfer of goods, check each packaging unit for damage.
2. In the event of in-transit damage, assess the exact damage, document it and
notify KSB or the supplying dealer and the insurer about the damage in writing
immediately.
NOTE
The pump set/pump/motor is supplied by the manufacturer/supplier in packaging
which largely prevents sagging or other damage during transport and/or storage.
3.2 Transport
DANGER
Improper transport
Personal injury and damage to property!
▷Do not use add-on parts, such as dosing equipment, pipelines and centring
devices for transport purposes.
WARNING
Improper transport
Risk of crushing hands and feet!
Damage to the pump set!
▷Always transport the pump set in a horizontal position.
▷Do not use power cables for transport.
▷Gently place the pump set down on a suitable surface.
▷Observe the centre of gravity of the pump set and the weights indicated.
WARNING
Pump set tilting or rolling off
Risk of personal injury!
▷Always secure vertically positioned pump sets against tipping over.
▷Always secure horizontally positioned pump sets against rolling off.
CAUTION
Ambient temperature below the specified minimum
Danger of frost!
▷Never subject the pump set to ambient temperatures which are lower than
those permitted for the drinking water/antifreeze mixture provided (see section
on drinking water/antifreeze mixture / order documentation).
NOTE
Take into account the unequal weight distribution between pump and motor.
The magnet rotor is generally stored and transported in non-magnetic, latchable
boxes, which are marked with special safety notices on the outside. The distance
from the rotor to the outside of the box must be equivalent to the safety distance of
0.3m as a minimum.

3 Transport/Storage/Disposal
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Moving the transport boxes
Transport boxes Submersible borehole pumps are supplied in appropriate packaging, e.g. transport
boxes, containing either the pump set or the pump and/or motor as individual
components (depending on the design). Use suitable lifting equipment to transport
the transport box to the place of installation or storage. Observe the marking on the
long side of the transport box. This marking indicates the centre of gravity.
Unpacking the pump set/pump/motor
WARNING
Unsecured cable drum
Risk of injury!
▷Always secure the cable drum against tipping over.
▷Always secure the cable drum against rolling off.
WARNING
Laying electric cables at temperatures below zero degrees
Damage to the electric cable!
▷Observe the minimum permissible temperature at the cable surface of -25°C for
moving cables.
▷Observe the minimum permissible temperature at the cable surface of -40°C for
stationary cables.
CAUTION
Excessive bending stress on the pump set
Damage to the pump set!
▷Choose sling points which prevent excessive bending stress on the pump set.
Unpacking Use suitable lifting equipment for lifting the pump set out of the packaging and for
transporting it. (ðSection4.8,Page20) Use suitable lifting tackle for lifting the
pump set out of the packaging and for transporting it, e.g. lifting straps.
Attachment points: in the middle of the motor and at the upper end of the pump.
Fig.1: Transporting the pump set by crane
üSuitable lifting equipment and lifting tackle are provided.
üThe surface on which the pump set is to be positioned is solid and level.
üSecuring means, e.g. timber wedges are on hand.
1. Gently place down the transport box.
2. Open the transport box.
3. Take out the power cable and place it down.

3 Transport/Storage/Disposal
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4. Position the lifting tackle allowing for balanced lifting. Normally, the centre of
gravity of the pump set will be in the motor area. Watch any add-on parts, such
as piping and cables!
5. Lift the pump set out with the lifting equipment and position it on a solid and
level surface.
6. Use appropriate means to secure the pump set against rolling off.
3.2.1 Pulling the pump/motor/pump set upright
WARNING
Incorrect positioning/placing down
Personal injury and damage to property!
▷Position the pump set vertically with the motor on top.
▷Use appropriate means to secure the pump set against tilting and tipping over.
▷Refer to the weights given in the data sheet/on the name plate.
WARNING
Improper handling when placing the pump set in a vertical/horizontal position
Personal injury and damage to property!
▷Use one or two pieces of lifting equipment, depending on the pump (set) size.
▷Use appropriate means to secure the pump set against tilting, tipping over or
rolling off.
▷Maintain a safe distance during lifting operations (load may swing when being
lifted).
▷Use additional supports for the transport holder to secure it against tilting.
WARNING
Incorrect handling of the power cable
Personal injury and damage to property!
▷Secure power cables against falling down.
CAUTION
Improper storage
Damage to the electric cables!
▷Observe the minimum bending radius of the electric cables.
▷Only remove the protective caps from the electric cables at the time of
installation.
CAUTION
Excessive bending stress on the pump set
Damage to the pump set!
▷Choose sling points which prevent excessive bending stress on the pump set.
üSuitable lifting equipment for the total weight has been selected and is on hand.
1. Fasten to a suitable lifting accessory, e.g. mounting plate.
2. Attach the lifting equipment, pull the pump/motor/pump set upright, and
secure it against tipping over.

3 Transport/Storage/Disposal
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3.3 Storage/preservation
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken:
WARNING
Pump set tilting or rolling off
Risk of personal injury!
▷Always secure vertically positioned pump sets against tipping over.
▷Always secure horizontally positioned pump sets against rolling off.
WARNING
Laying electric cables at temperatures below zero degrees
Damage to the electric cable!
▷Observe the minimum permissible temperature at the cable surface of -25°C for
moving cables.
▷Observe the minimum permissible temperature at the cable surface of -40°C for
stationary cables.
CAUTION
Ambient temperature below the specified minimum
Danger of frost!
▷Never subject the pump set to ambient temperatures which are lower than
those permitted for the drinking water/antifreeze mixture provided (see section
on drinking water/antifreeze mixture / order documentation).
CAUTION
Improper storage
Damage to the electric cables!
▷Observe the minimum bending radius of the electric cables.
▷Only remove the protective caps from the electric cables at the time of
installation.
For temporary storage, store the submersible borehole pumps as follows:
1. In original packaging in a horizontal position
2. Without packaging in a vertical position (with the motor below)
3. In a dry environment
4. Protected against direct sunlight and heat
5. Protected against dirt and dust
6. Protected against freezing
7. Protected against vermin
Further information on storing the pump set after it has been in use
(ðSection7.5,Page52) .

3 Transport/Storage/Disposal
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3.4 Return to supplier
CAUTION
Ambient temperature below the specified minimum
Danger of frost!
▷Never subject the pump set to ambient temperatures which are lower than
those permitted for the drinking water/antifreeze mixture provided (see section
on drinking water/antifreeze mixture / order documentation).
1. Clean the pump set properly from the outside.
2. Flush and clean the pump, particularly if it has been used for handling noxious,
explosive or other hazardous fluids.
3. If the pump has handled fluids whose residues could lead to corrosion damage
in the presence of atmospheric humidity or could ignite upon contact with
oxygen also neutralise the pump and blow through with anhydrous inert gas to
ensure drying.
4. Always fully complete and enclose a certificate of decontamination when
returning the pump (set).
Indicate any safety measures and decontamination measures taken.
(ðSection11,Page64)
NOTE
If required, a blank certificate of decontamination can be downloaded from the
following web site: www.ksb.com/certificate_of_decontamination
3.5 Disposal
WARNING
Fluids posing a health hazard
Hazard to persons and the environment!
▷Collect and properly dispose of the flushing liquid and any liquid residues.
▷Wear safety clothing and a protective mask if required.
▷Observe all legal regulations and internal safety information on the disposal of
fluids posing a health hazard.
1. Dismantle the pump (set).
Collect greases and other lubricants during dismantling.
2. Separate and sort the pump materials, e.g. by:
- Metals
- Plastics
- Electronic waste
- Greases and other lubricants
3. Dispose of materials in accordance with local regulations or in another
controlled manner.
Electrical or electronic equipment marked with the adjacent symbol must not be
disposed of in household waste at the end of its service life.
Contact your local waste disposal partner for returns.
If the used electrical or electronic equipment contains personal data, the operator is
responsible for deleting it before the equipment is returned.

4 Description of the Pump (Set)
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4 Description of the Pump (Set)
4.1 General description
Pump for handling clean or slightly contaminated water.
Verify the fluid composition against the data sheet.
Not approved for handling explosive fluids or for forming part of an explosion-proof
system!
4.2 Product information as per Regulation No. 1907/2006(REACH)
For information as per chemicals Regulation (EC) No. 1907/2006 (REACH), see http://
www.ksb.com/reach.
4.3 Designation
Submersible borehole pump
Example: UPA 250C - 150 / 5b
Table4: Key to the designation
Code Description
UPA Pump type
250 Nominal size [mm]
C Design status
150 Flow rate at best efficiency point [m³/h]
5 Number of stages
b Reduced impeller diameters
Submersible borehole pump
Example: BRZS 535 / 5
Table5: Key to the designation
Code Description
B R Pump type
Z Nominal size
S Design with suction impeller
535 Hydraulic code
5 Number of stages
Submersible motor
Example: VBD FV 31 - 30 5
Table6: Key to the designation
Code Description
V Motor size, e.g. V = 14 inches
B Number of poles, e.g. B = 2 poles
D Design status
FV Length of core pack
31 Maximum rated power
30 Voltage, e.g. 30 = 3 kV
5 Frequency, e.g. 5 = 50 Hz

4 Description of the Pump (Set)
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4.4 Name plate
Serial No. 9971XXXX48-000100
1
2
3
4
5
6
13
14
15
Pump BRE 555/3
Qmin
Qmax
Q
Motor
340 KW
3300 V
Temp.
Min. flow velocity past the motor C=0.2m/s
EN 60034-1
IP 68
Mat. No.: 01 000 854 ZN 3823 - D 88
300 L/MIN
1.170 L/MIN
879,6 L/MIN
Hmax
Hmin
H
108 M
69 M
92,7 M
3~ XMD HQ 37-335
50 HZ
86 A 0,77 COS
max. 20 °C 1.467 1/MIN
7
8
11
12
9
10
16
17
18
19
KSB SE & Co. KGaA
67227 Frankenthal
Germany
Johann-Klein-Straße 9
Fig.2: Name plate (example)
1 Order number 2 Pump designation
3 Minimum flow rate 4 Maximum flow rate
5 Flow rate at duty point 6 Motor designation
7 Rated power 8 Voltage
9 Frequency 10 Amperage
11 Maximum fluid temperature 12 Minimum available flow along the
motor
13 Maximum head 14 Minimum head
15 Head at duty point 16 Power factor
17 Speed 18 VDE Standard
19 Motor enclosure
4.5 Design details
Design
▪Centrifugal pump
▪Single-stage
or
▪Multistage
▪Single-suction
or
▪Double-entry
▪Shroud design
or
▪Ring-section design
Connections
▪Flanged connection
Impeller type
▪Radial or mixed flow versions
▪Mixed flow hydraulic system with trimmable impellers

4 Description of the Pump (Set)
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Type of installation
▪Vertical installation
Drive
▪Asynchronous motor
▪With squirrel cage motor for submerged use
▪DOL starting or star-delta starting
▪Rubber expansion diaphragm for pressure equalisation
or
▪Pressurised via water reservoir
Electrical connection
▪Delivered ex-factory with 1 or 2 motor leads (including earth conductor and
internal earthing)
▪Extension cable connected with water-tight cable connector
▪Motor lead and extension cable suitable for drinking water use
Bearings
▪Radial plain bearings
▪Pump bearings lubricated by fluid handled; motor bearings lubricated by water
fill
▪Axial thrust is balanced by a tilting-pad thrust bearing in the motor (lower end)
▪1intermediate bearing in the pump, depending on the pump size and the
number of stages

4 Description of the Pump (Set)
19 of 68
UPA, UPZ, BSX
3400.87/08-EN
4.6 Configuration and function
6/7
4
5
3
2
1
Fig.3: Sectional drawing, example of a UPA
Design Pump and motor are connected by a rigid coupling. The stage casings are supported
by straps or stud bolts. A suction strainer at the suction casing protects the pump
from coarse particles in the fluid. The pump set is connected to the piping via a non-
return valve or connection branch with either internal thread or flanged end
(optional).
Function The fluid flows along the motor and enters the suction casing (2) through the suction
strainer (1). It is accelerated outward by the suction impeller (3). In the flow passage
of the stage casing (4) the kinetic energy of the fluid is converted into pressure
energy, and the fluid is routed to the next impeller (5). This process is repeated in all
stages until the fluid has passed the last impeller (5). It is then guided through the
integrated lift check valve (6) to the connection branch (7), where it leaves the pump.
The integrated lift check valve prevents uncontrolled backflow of the fluid.
4.7 Scope of supply
Depending on the model, the following items are included in the scope of supply:
▪Pump set with motor lead
Optional:
▪Pump and/or motor as individual units
▪Power cable

4 Description of the Pump (Set)
20 of 68 UPA, UPZ, BSX
3400.87/08-EN
– Connected or supplied but not fitted
▪Equipment for filling the motor 2)
▪Separate name plate
▪Separate warning sticker 3)
Optional accessories:
▪Cable connector
▪Cable clips
▪Cooling shroud, suction shroud or pressure shroud
▪Pedestals
▪Electrical protection equipment
▪Automatic control units
NOTE
A separate name plate is included in the scope of supply.
This name plate must be attached in a clearly visible position outside the place of
installation, e.g. at the control panel, pipeline or mounting bracket.
4.8 Dimensions and weights
For dimensions and weights please refer to the data sheet of the pump (set).
2For motors UMA300D, 14D only
3For UMA-S150E, UMA-S200D synchronous motors only