KSB HPK-L Installation instructions

Thermal Oil / Hot Water Pump
HPK-L
Installation/Operating Manual

Legal information/Copyright
Installation/Operating Manual HPK-L
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 06/10/2021

Contents
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Contents
Glossary .................................................................................................................................................. 6
1 General.................................................................................................................................................... 7
1.1 Principles ...........................................................................................................................................................7
1.2 Installation of partly completed machinery....................................................................................................7
1.3 Target group.....................................................................................................................................................7
1.4 Other applicable documents............................................................................................................................7
1.5 Symbols .............................................................................................................................................................7
1.6 Key to safety symbols/markings.......................................................................................................................8
2 Safety...................................................................................................................................................... 9
2.1 General..............................................................................................................................................................9
2.2 Intended use .....................................................................................................................................................9
2.3 Personnel qualification and training...............................................................................................................9
2.4 Consequences and risks caused by non-compliance with this manual .......................................................10
2.5 Safety awareness ............................................................................................................................................10
2.6 Safety information for the operator/user.....................................................................................................10
2.7 Safety information for maintenance, inspection and installation ..............................................................10
2.8 Unauthorised modes of operation................................................................................................................11
2.9 Explosion protection ......................................................................................................................................11
2.9.1 Marking ..............................................................................................................................................11
2.9.2 Temperature limits.............................................................................................................................11
2.9.3 Monitoring equipment......................................................................................................................12
2.9.4 Operating limits .................................................................................................................................12
3 Transport/Storage/Disposal ................................................................................................................ 13
3.1 Checking the condition upon delivery..........................................................................................................13
3.2 Transport.........................................................................................................................................................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......................................................................................................................................................16
4.5 Design details..................................................................................................................................................17
4.6 Configuration and function...........................................................................................................................19
4.7 Noise characteristics .......................................................................................................................................20
4.8 Scope of supply...............................................................................................................................................20
4.9 Dimensions and weights ................................................................................................................................21
5 Installation at Site................................................................................................................................ 22
5.1 Checks to be carried out prior to installation...............................................................................................22
5.2 Installing the pump set ..................................................................................................................................22
5.2.1 Installation on the foundation..........................................................................................................23
5.2.2 Installation without foundation .......................................................................................................24
5.3 Piping ..............................................................................................................................................................24
5.3.1 Connecting the piping.......................................................................................................................24
5.3.2 Permissible forces and moments at the pump nozzles....................................................................26
5.3.3 Auxiliary connections.........................................................................................................................27
5.4 Enclosure/insulation .......................................................................................................................................28
5.5 Checking the coupling alignment .................................................................................................................28
5.6 Aligning the pump and motor ......................................................................................................................30
5.6.1 Motors with adjusting screw.............................................................................................................31
5.6.2 Motors without adjusting screw .......................................................................................................31

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5.7 Electrical connection ......................................................................................................................................32
5.7.1 Setting the time relay........................................................................................................................33
5.7.2 Earthing..............................................................................................................................................33
5.7.3 Connecting the motor .......................................................................................................................33
5.8 Checking the direction of rotation................................................................................................................34
6 Commissioning/Start-up/Shutdown................................................................................................... 35
6.1 Commissioning/Start-up.................................................................................................................................35
6.1.1 Prerequisites for commissioning/start-up .........................................................................................35
6.1.2 Filling in lubricants.............................................................................................................................35
6.1.3 Shaft seal ............................................................................................................................................35
6.1.4 Quench liquid supply.........................................................................................................................36
6.1.5 Priming and venting the pump.........................................................................................................36
6.1.6 Final check..........................................................................................................................................37
6.1.7 Cooling of the mechanical seal chamber .........................................................................................37
6.1.8 Heating up/keeping warm the pump (set).......................................................................................38
6.1.9 Start-up...............................................................................................................................................38
6.1.10 Checking the shaft seal......................................................................................................................39
6.1.11 Shutdown ...........................................................................................................................................39
6.2 Operating limits..............................................................................................................................................40
6.2.1 Ambient temperature........................................................................................................................40
6.2.2 Minimum permissible speed..............................................................................................................40
6.2.3 Frequency of starts.............................................................................................................................41
6.2.4 Fluid handled .....................................................................................................................................41
6.3 Shutdown/storage/preservation ....................................................................................................................42
6.3.1 Measures to be taken for shutdown ................................................................................................42
6.4 Returning to service .......................................................................................................................................43
7 Servicing/Maintenance........................................................................................................................ 44
7.1 Safety regulations...........................................................................................................................................44
7.2 Servicing/Inspection........................................................................................................................................45
7.2.1 Supervision of operation...................................................................................................................45
7.2.2 Inspection work..................................................................................................................................47
7.2.3 Lubrication and lubricant change of rolling element bearings .....................................................48
7.3 Drainage/cleaning ..........................................................................................................................................49
7.4 Dismantling the pump set..............................................................................................................................49
7.4.1 General information/Safety regulations...........................................................................................49
7.4.2 Preparing the pump set.....................................................................................................................50
7.4.3 Removing the motor..........................................................................................................................50
7.4.4 Removing the back pull-out unit ......................................................................................................50
7.4.5 Removing the impeller ......................................................................................................................51
7.4.6 Removing the plain bearing..............................................................................................................51
7.4.7 Removing the mechanical seals ........................................................................................................51
7.4.8 Dismantling the bearings ..................................................................................................................52
7.4.9 Removing the plain bearing bush.....................................................................................................53
7.5 Reassembling the pump set...........................................................................................................................53
7.5.1 General information/Safety regulations...........................................................................................53
7.5.2 Installing the bearings.......................................................................................................................54
7.5.3 Installing the mechanical seal ...........................................................................................................55
7.5.4 Fitting the plain bearing bush ..........................................................................................................57
7.5.5 Fitting the bearing bracket ...............................................................................................................58
7.5.6 Fitting the plain bearing ..................................................................................................................58
7.5.7 Fitting the impeller............................................................................................................................58
7.5.8 Fitting the back pull-out unit............................................................................................................59
7.5.9 Mounting the motor .........................................................................................................................59
7.6 Tightening torques.........................................................................................................................................59
7.6.1 Tightening torques for volute casing/bearing bracket....................................................................59
7.7 Spare parts stock.............................................................................................................................................60
7.7.1 Ordering spare parts..........................................................................................................................60
7.7.2 Recommended spare parts stock for 2 years' operation to DIN24296 ..........................................60

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7.7.3 Interchangeability of pump components.........................................................................................61
8 Trouble-shooting.................................................................................................................................. 63
9 Related Documents.............................................................................................................................. 65
9.1 General assembly drawing with list of components ....................................................................................65
10 EU Declaration of Conformity............................................................................................................. 68
11 Certificate of Decontamination........................................................................................................... 69
Index ..................................................................................................................................................... 70

Glossary
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Glossary
Back pull-out design
The complete back pull-out unit can be pulled out
without having to remove the pump casing from
the piping.
Back pull-out unit
Pump without pump casing; partly completed
machinery
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.
Discharge line
The pipeline which is connected to the discharge
nozzle
Hydraulic system
The part of the pump in which the kinetic energy
is converted into pressure energy
Pool of pumps
Customers/operators’ pumps which are purchased
and stored regardless of their later use.
Pump
Machine without drive, additional components or
accessories
Pump set
Complete pump set consisting of pump, drive,
additional components and accessories
Suction lift line/suction head line
The pipeline which is connected to the suction
nozzle

1 General
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1 General
1.1 Principles
This operating manual is valid for the type series and variants indicated on the front
cover.
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
clearly 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 Installation of partly completed machinery
To install partly completed machinery supplied by KSB refer to the sub-sections under
Servicing/Maintenance. (ðSection7.5.5,Page58)
1.3 Target group
This operating manual is aimed at the target group of trained and qualified specialist
technical personnel. (ðSection2.3,Page9)
1.4 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
Drawing of auxiliary connections Description of auxiliary connections
Hydraulic characteristic curve Characteristic curves showing head, NPSH
required, efficiency and power input
General assembly drawing1) Sectional drawing of the pump
Sub-supplier product literature1) Operating manuals and other product literature
describing accessories and integrated machinery
components
Spare parts lists1) Description of spare parts
Piping layout1) Description of auxiliary piping
List of components1) Description of all pump components
Assembly drawing1) Sectional drawing of the installed shaft seal
For accessories and/or integrated machinery components observe the relevant
manufacturer's product literature.
1.5 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
1If agreed to be included in the scope of supply

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Symbol Description
1.
2.
Step-by-step instructions
Note
Recommendations and important information on how to handle
the product
1.6 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. (ðSection1.4,Page7)
▪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 (set) to handle the fluids described in the data sheet or
product literature of the pump model.
▪Never operate the pump (set) without the fluid to be handled.
▪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).
▪Always operate the pump (set) in the direction of rotation it is intended for.
▪Do not throttle the flow rate on the suction side of the pump (to prevent
cavitation damage).
▪Consult the manufacturer about any use or mode of operation not described in
the data sheet or product literature.
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.

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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 stopping 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.
2.7 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.
▪Only carry out work on the pump (set) during standstill of the pump.
▪Only perform work on the pump set when it has been disconnected from the
power supply (de-energised).
▪The pump (set) must have cooled down to ambient temperature.
▪Pump pressure must have been released and the pump must have been drained.

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▪When taking the pump set out of service always adhere to the procedure
described in the manual. (ðSection6.3,Page42)
▪Decontaminate pumps which handle fluids posing a health hazard.
(ðSection7.3,Page49)
▪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35)
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.
(ðSection2.2,Page9)
2.9 Explosion protection
!DANGER
Always observe the information on explosion protection given in this section when
operating the product in potentially explosive atmospheres.
Only pumps/pump sets marked as explosion-proof and identified as such in the data
sheet may be used in potentially explosive atmospheres.
Special conditions apply to the operation of explosion-proof pump sets to EU
Directive 2014/34/EU (ATEX).
Especially adhere to the sections in this manual marked with the Ex symbol and the
following sections, (ðSection2.9.1,Page11) to (ðSection2.9.4,Page12)
The explosion-proof status is only assured if the product is used in accordance with its
intended use.
Never operate the product outside the limits stated in the data sheet and on the
name plate.
Prevent impermissible modes of operation at all times.
2.9.1 Marking
Pump The marking on the pump refers to the pump part only.
Example of such marking:
II 2G Ex h IIC T5-T1 Gb
Refer to the Temperature limits table for the maximum temperatures permitted for
the individual pump variants. (ðSection2.9.2,Page11)
The pump complies with the requirements of type of protection constructional safety
"c" to ISO80079-37.
Shaft coupling An EC manufacturer's declaration is required for the shaft coupling; the shaft
coupling must be marked accordingly.
Motor The motor has its own marking. The marking is maintained on the condition that the
temperatures the pump causes to develop at the motor flange and motor shaft are
permitted by the motor manufacturer.
The motors used by KSB on pumps with ATEX certification meet this condition.
Misuse, malfunctions or non-compliance with the instructions may result in
substantially higher temperatures.
2.9.2 Temperature limits
In normal pump operation, the highest temperatures are to be expected at the
surface of the pump casing, at the shaft seal and in the bearing areas.
The surface temperature at the pump casing corresponds to the temperature of the
fluid handled. If the pump is heated in addition, the operator of the system is
responsible for observing the specified temperature class and fluid temperature
(operating temperature).

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The table (ðTable4) lists the temperature classes and the resulting maximum
permissible fluid temperatures. The values shown correspond to the theoretical
limits. They include only a general safety margin for the mechanical seal. For single
mechanical seals, the safety margin required for specific operating conditions and
mechanical seal designs may be substantially higher. If operating conditions differ
from those stated on the data sheet, or if different mechanical seals are used, the
actual safety margin required needs to be determined individually. If in doubt please
contact the manufacturer.
The temperature class specifies the maximum permissible temperature at the surface
of the pump set during operation.
For the permissible operating temperature of the pump in question refer to the data
sheet.
Table4: Temperature limits
Temperature class to ISO80079-36 Maximum permissible
fluid temperature2)
T1 Maximum 400°C3)
T2 280°C
T3 185°C
T4 120°C
T5 85°C
T6 Only after consultation
with the manufacturer
Temperature class T5 Based on an ambient temperature of 40°C and proper maintenance and operation,
compliance with temperature class T5 is warranted in the area of the rolling element
bearings. If the ambient temperature exceeds 40°C, contact the manufacturer.
Temperature class T6 A special design is required to comply with the requirements of temperature class T6
in the bearing area.
Misuse, malfunctions or non-compliance with the instructions may result in
substantially higher temperatures.
If the pump is to be operated at a higher temperature, the data sheet is missing or if
the pump is part of a pool of pumps, contact KSB for the maximum permissible
operating temperature.
2.9.3 Monitoring equipment
The pump (set) must only be operated within the limits specified in the data sheet
and on the name plate.
If the system operator cannot warrant compliance with these operating limits,
appropriate monitoring devices must be used.
Check whether monitoring equipment is required to ensure that the pump set
functions properly.
Contact KSB for further information about monitoring equipment.
2.9.4 Operating limits
The minimum flow rates indicated in (ðSection6.2.4.1,Page41) refer to water
and water-like fluids handled. Longer operating periods with these fluids and at the
flow rates indicated will not cause an additional increase in the temperatures at the
pump surface. However, if the physical properties of the fluids handled are different
from water, it is essential to check whether an additional heat build-up may occur
and if the minimum flow rate must therefore be increased. The calculation formula
in (ðSection6.2.4.1,Page41) can be used to check whether additional heat build-
up may lead to a dangerous temperature increase at the pump surface.
2Subject to further limitations for mechanical seal temperature rise
3Depending on the material variant

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.
3.2 Transport
DANGER
The pump (set) could slip out of the suspension arrangement
Danger to life from falling parts!
▷Always transport the pump (set) in the specified position.
▷Never attach the suspension arrangement to the free shaft end or the motor
eyebolt.
▷Observe the information about weights, centre of gravity and fastening points.
▷Observe the applicable local accident prevention regulations.
▷Use suitable, permitted lifting accessories, e.g. self-tightening lifting tongs.
To transport the pump/pump set or back pull-out unit suspend it from the lifting
tackle as shown.
≤ 90 °
Fig.1: Transporting the back pull-out unit
Fig.2: Transporting the pump

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≤ 90 °
Fig.3: Transporting the pump set
≤ 90 °
Fig.4: Transporting the pump on the baseplate
CAUTION
Risk of pump (set) or bare shaft end hitting other objects
Damage to the ceramic plain bearing!
▷Secure them properly.
3.3 Storage/preservation
CAUTION
Damage during storage due to humidity, dirt or vermin
Corrosion/contamination of the pump (set)!
▷For outdoor storage cover the pump (set) or the packaged pump (set) and
accessories with waterproof material.
CAUTION
Wet, contaminated or damaged openings and connections
Leakage or damage to the pump!
▷Clean and cover pump openings and connections as required prior to putting
the pump into storage.
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken for pump (set) storage.
▪Store the pump (set) in a dry, protected room where the atmospheric humidity is
as constant as possible.
▪Rotate the shaft by hand once a month, e.g. via the motor fan.
If properly stored indoors, the pump set is protected for a maximum of 12 months.
New pumps/pump sets are supplied by our factory duly prepared for storage.
For storing a pump (set) which has already been operated, the shutdown measures
must be adhered to. (ðSection6.3.1,Page42)

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3.4 Return to supplier
1. Drain the pump as per operating instructions. (ðSection7.3,Page49)
2. Flush and clean the pump, particularly if it has been used for handling noxious,
explosive, hot 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 complete and enclose a certificate of decontamination when returning
the pump.
Indicate any safety measures and decontamination measures taken.
(ðSection11,Page69)
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 handled, consumables and supplies which are hot and/or pose a health
hazard
Hazard to persons and the environment!
▷Collect and properly dispose of flushing fluid and any fluid residues.
▷Wear safety clothing and a protective mask if required.
▷Observe all legal regulations 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.

4 Description of the Pump (Set)
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4 Description of the Pump (Set)
4.1 General description
▪Heat transfer fluid / hot water pump
Pump for handling hot water and organic or synthetic heat transfer fluids in piping
or tank systems.
Standard design for plants (large heating systems, forced circulation boilers, district
heating systems, etc).
4.2 Product information as per Regulation No. 1907/2006(REACH)
For information as per chemicals Regulation (EC) No. 1907/2006 (REACH), see https://
www.ksb.com/ksb-en/About-KSB/Corporate-responsibility/reach/ .
4.3 Designation
Example: HPK- L S 4 80- 200
Table5: Key to the designation
Code Description
HPK Type series
L Air-cooled
S Material of wetted components
4 Pressure class
80 Nominal discharge nozzle diameter [mm]
200 Nominal impeller diameter [mm]
4.4 Name plate
KSB SE & Co. KGaA
Johann-Klein-Straße 9
67227 Frankenthal
ZN 3804 - E 37 X 52
Q
n
H
P-No.
Mat. No. 01220221
HPK-L 100-250 2018
0520-5-P-10000-31
997125086300550001
287 m³/h
2978 1/min
85 m
1
2
5
4
3
6
7
Fig.5: Name plate (example)
1 Type series, size, material 2 Customer-specific information
(optional)
3 KSB order number and order item
number
4 Flow rate
5 Speed 6 Year of construction
7 Head

4 Description of the Pump (Set)
17 of 74
HPK-L
1136.8/15-EN
4.5 Design details
Design
▪Volute casing pump
▪Horizontal installation
▪Back pull-out design
▪Single-stage
▪Technical requirements to ISO 5199
▪Dimensions and ratings to ISO2858
complemented by pumps of nominal diameters DN25, DN200, DN250 and
nominal impeller diameter 500mm
Pump casing
Fig.6: Pump feet, bottom
▪Single or double volute, depending on the pump size
▪Radially split volute casing
▪Volute casing (with casing wear ring, if applicable) and casing cover
Impeller type
▪Closed radial impeller with multiply curved vanes
▪Back vanes reduce axial thrust.
Shaft seal
▪Single, balanced standardised mechanical seal
– The seal chamber is located between the product-lubricated pump-end plain
bearing and the external, drive-end rolling element bearing.
Mechanical seal in "dead end" arrangement
1. Never use mechanical seals which have not been approved by KSB.
2. Due to the complex conditions which need to be fulfilled for heat transfer fluid
pumps, the use of mechanical seals not approved by KSB shall not be covered by
KSB's scope of warranty.
Fig.7: Mechanical seal in "dead end" arrangement
The seal chamber is cooled by cooling fins and ambient cooling air.

4 Description of the Pump (Set)
18 of 74 HPK-L
1136.8/15-EN
There is no external cooling system!
Design specifications Drive-end bearing:
▪Fixed bearing
▪Grease-packed angular contact ball bearings sealed for life
▪Axial movement of the rotor limited to 0.5 mm maximum
▪Axial seal rings on both sides
Pump-end bearing:
▪Radial bearing
▪Absorbs radial loads only
▪Product-lubricated ceramic bearing
Bearing bracket designation Example: P03
Table6: Bearing bracket designation
Code Description
L Air-cooled bearing bracket with integrated shaft seal chamber
P Process design
03 Size code (based on the dimensions of seal chamber and shaft end)
Refer to the data sheet to find your bearing design.
Bearings used Table7: Bearing design
KSB designation FAG designation SKF designation
B.G B-TVP-UA BECBP
B.G 8 B-TVP-UA 80 BEC86P
Table8: Standard bearings
Bearing
bracket
Pump end Drive end
Plain bearing [diameter in mm] Angular contact ball bearings
LP02 SSiC, 37 mm 2 x 7307 B.G
LP03 SSiC, 50 mm 2 x 7307 B.G
LP04 SSiC, 50 mm 2 x 7309 B.G.8
LP05 SSiC, 62 mm 2 x 7313 B.G
LP06 SSiC, 72 mm 2 x 7315 B.G

4 Description of the Pump (Set)
19 of 74
HPK-L
1136.8/15-EN
4.6 Configuration and function
1
3
2
6
10
9
4
8
7
5
Fig.8: Sectional drawing
1 Clearance gap 2 Discharge nozzle
3 Casing cover 4 Drive shaft
5 Bearing bracket 6 Shaft seal
7 Suction nozzle 8 Impeller
9 Plain bearing, pump end 10 Rolling element bearings, drive end
Design The pump is designed with an axial fluid inlet and a radial or tangential outlet. The
hydraulic system runs in its own bearings and is connected to the motor by a shaft
coupling.
Function The fluid enters the pump axially via the suction nozzle (7) and is accelerated
outward by the rotating impeller (8). In the flow passage of the pump casing the
kinetic energy of the fluid is converted into pressure energy. The fluid is pumped to
the discharge nozzle (2), where it leaves the pump. The clearance gap (1) prevents
any fluid from flowing back from the casing to the suction nozzle. At the rear side of
the impeller, the shaft (4) enters the hydraulic system via the casing cover (3). The
shaft passage through the cover is sealed towards the atmosphere with a shaft seal
(6). The shaft runs in a pump-end plain bearing (9) and drive-end rolling element
bearings (10). The bearings are supported by a bearing bracket (5) linked with the
pump casing and/or casing cover.
Sealing The pump is sealed by a KSB mechanical seal as standard. A standardised mechanical
seal with shaft sleeve is available as an option.

4 Description of the Pump (Set)
20 of 74 HPK-L
1136.8/15-EN
4.7 Noise characteristics
Table9: Surface sound pressure level LpA
4) 5)
PNPump Pump set
960rpm,
760rpm
1450rpm 2900 rpm 960rpm,
760rpm
1450rpm 2900 rpm
[kW] [dB] [dB] [dB] [dB] [dB] [dB]
1,5 52 53 54 56 58 63
2,2 53 55 56 58 60 66
3 55 56 57 60 62 68
4 56 58 59 61 63 69
5,5 58 59 61 62 65 71
7,5 59 61 62 64 66 72
11 61 63 64 65 68 74
15 63 65 66 67 69 75
18,5 64 66 67 68 70 76
22 65 67 68 68 71 77
30 66 68 70 70 72 78
37 67 70 71 70 73 79
45 68 71 72 71 74 80
55 69 72 73 72 74 80
75 71 73 75 73 76 81
90 71 74 76 73 76 82
110 72 75 77 74 77 82
132 73 76 78 75 77 83
160 74 77 79 75 78 84
200 75 78 80 76 79 84
250 - 79 81 - 80 85
4.8 Scope of supply
Depending on the model, the following items are included in the scope of supply:
▪Pump
Drive
▪Surface-cooled IEC frame three-phase squirrel-cage motor
Coupling
▪Flexible coupling with or without spacer
Contact guard
▪Coupling guard
▪Baseplate (to ISO 3661), cast or welded, for pump and motor, in torsion-resistant
design
▪Channel section steel or folded steel plate
Special accessories
▪As required
4Surface sound pressure level as per ISO 3744 and DIN EN ISO 20361 ; valid for a pump operating range of Q/
QBEP=0.8-1.1 and non-cavitating operation. If noise levels are to be guaranteed: Add +3dB for measuring
and constructional tolerance.
5Increase for 60Hz operation: 3500rpm +3dB; 1750rpm +1dB; 1160rpm ±0dB