KSB Amarex KRT Installation instructions

Submersible Motor Pump
Amarex KRT
Pump sizes DN 50 to DN 100
Motor sizes
2 poles: 32.E to 72.E
4 poles: 24.E to 54.E
Installation/Operating Manual

Legal information/Copyright
Installation/Operating Manual Amarex KRT
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 Aktiengesellschaft, Frankenthal 17.11.2015

Contents
Glossary ......................................................................................................................................... 5
1 General .......................................................................................................................................... 6
1.1 Principles .........................................................................................................................................................6
1.2 Installation of partly completed machinery ..................................................................................................6
1.3 Target group ...................................................................................................................................................6
1.4 Other applicable documents ..........................................................................................................................6
1.5 Symbols ...........................................................................................................................................................6
2 Safety ............................................................................................................................................. 8
2.1 Key to safety symbols/markings .....................................................................................................................8
2.2 General ............................................................................................................................................................8
2.3 Intended use ...................................................................................................................................................8
2.4 Personnel qualification and training .............................................................................................................9
2.5 Consequences and risks caused by non-compliance with this manual .....................................................10
2.6 Safety awareness ..........................................................................................................................................10
2.7 Safety information for the operator/user ...................................................................................................10
2.8 Safety information for maintenance, inspection and installation ............................................................10
2.9 Unauthorised modes of operation ..............................................................................................................11
2.10 Explosion protection ....................................................................................................................................11
3 Transport/Temporary Storage/Disposal ..................................................................................... 12
3.1 Checking the condition upon delivery ........................................................................................................12
3.2 Transport .......................................................................................................................................................12
3.3 Storage/preservation ....................................................................................................................................13
3.4 Return to supplier .........................................................................................................................................14
3.5 Disposal .........................................................................................................................................................14
4 Description of the Pump (Set) .................................................................................................... 15
4.1 General description ......................................................................................................................................15
4.2 Designation ...................................................................................................................................................15
4.3 Name plate ....................................................................................................................................................16
4.4 Design details ................................................................................................................................................16
4.5 Installation types ..........................................................................................................................................16
4.6 Configuration and function .........................................................................................................................17
4.7 Scope of supply .............................................................................................................................................17
4.8 Dimensions and weights ..............................................................................................................................18
5 Installation at Site ....................................................................................................................... 19
5.1 Safety regulations .........................................................................................................................................19
5.2 Checks to be carried out prior to installation .............................................................................................19
5.3 Installing the pump set ................................................................................................................................22
5.4 Electrical system ............................................................................................................................................27
Contents
Amarex KRT 3 of 64

6 Commissioning/Start-up/Shutdown ........................................................................................... 33
6.1 Commissioning/start-up ...............................................................................................................................33
6.2 Operating limits ............................................................................................................................................34
6.3 Shutdown/storage/preservation ..................................................................................................................36
6.4 Returning to service .....................................................................................................................................36
7 Servicing/Maintenance ............................................................................................................... 38
7.1 Safety regulations .........................................................................................................................................38
7.2 Servicing/inspection ......................................................................................................................................39
7.3 Drainage/cleaning ........................................................................................................................................43
7.4 Dismantling the pump set ............................................................................................................................43
7.5 Reassembling the pump set .........................................................................................................................45
7.6 Tightening torques .......................................................................................................................................49
7.7 Spare parts stock ...........................................................................................................................................49
8 Trouble-shooting ........................................................................................................................ 50
9 Related Documents .................................................................................................................... 51
9.1 General assembly drawings .........................................................................................................................51
9.2 Wiring diagram .............................................................................................................................................55
9.3 Flamepaths on explosion-proof motors .....................................................................................................58
9.4 Sectional drawings of the mechanical seal .................................................................................................59
10 EC Declaration of Conformity .................................................................................................... 60
11 Certificate of Decontamination ................................................................................................. 61
Index ............................................................................................................................................ 62
Contents
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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.
Close-coupled design
Motor directly fitted to the pump via a flange
or a drive lantern
Flamepath
The surface of motor housing components
which form flameproof joints when an
explosion-proof motor is installed.
Hydraulic system
The part of the pump in which the kinetic
energy is converted into pressure energy
Pump set
Complete pump set consisting of pump, drive,
additional components and accessories
Glossary
Amarex KRT 5 of 64

1 General
1.1 Principles
This manual is supplied as an integral part of the type series and variants indicated
on the front cover (for details, refer to the table below).
Table 1: Variants covered by this manual
Sizes Impeller types Material variant
Grey cast iron Industrial materials
G G1 G2 GH H C1 C2
50-215 F F F F F F F F
50-216 F, S F, S F F F F F F
65-215 F F F F F F F F
80-216 F F F F F F F F
100-215 F F F F F - - -
1.2 Installation of partly completed machinery
To install partly completed machinery supplied by KSB refer to the sub-sections under
Servicing/Maintenance.
1.3 Target group
This operating manual is aimed at the target group of trained and qualified specialist
technical personnel. (⇨ Section 2.4 Page 9)
1.4 Other applicable documents
Table 2: 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, flow rate,
efficiency and power input
General assembly drawing1) Sectional drawing of the pump set
Sub-supplier product literature1) Operating manuals and other product
literature describing accessories and
integrated machinery components
Spare parts lists1) Description of spare parts
Supplementary operating manuals1) E.g. for special accessories
For accessories and/or integrated machinery components observe the relevant
manufacturer's product literature.
1.5 Symbols
Table 3: 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) If agreed to be included in the scope of supply
1 General
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Symbol Description
1.
2.
Step-by-step instructions
Note
Recommendations and important information on how to handle
the product
1 General
Amarex KRT 7 of 64

2 Safety
All the information contained in this section refers to hazardous situations.
2.1 Key to safety symbols/markings
Table 4: 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 EC Directive
94/9/EC (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.
2.2 General
This manual contains general installation, operating and maintenance instructions
that must be observed to ensure safe pump operation and prevent personal injury
and damage to property.
The safety information in all sections of this manual must be complied with.
This manual must be read and completely understood by the specialist personnel/
operators responsible prior to installation and commissioning.
The contents of this manual must be available to the specialist personnel at the site
at all times.
Information attached directly to the pump must always be complied with and be
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 in this manual.
2.3 Intended use
The pump set must only be operated within the operating limits described in the
other applicable documents.
▪Only operate pump sets which are in perfect technical condition.
▪Do not operate partially assembled pump sets.
▪Only use the pump (set) to handle the fluids described in the data sheet or
product literature of the pump model.
!DANGER
2 Safety
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▪Never operate the system without the fluid to be handled.
▪Observe the limits for continuous operation specified in the data sheet or
product literature (Qmin2) and Qmax3)) (to prevent damage such as shaft fracture,
bearing failure, mechanical seal damage, etc).
▪When untreated waste water is handled, the duty points in continuous operation
lie within 0.7 to 1.2 x Qopt4) to minimise the risk of clogging/hardening.
▪Avoid duty points for continuous operation at very low speeds and small flow
rates (< 0.7 x Qopt5)).
▪Observe the maximum flow rates 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 system (prevention of
cavitation damage).
▪Consult the manufacturer about any use or mode of operation not described in
the data sheet or product literature.
▪Only use the respective impeller types in combination with the fluids indicated in
the table below.
Table 5: Applications of impeller types
Impeller type Suitable for the following fluids
Free-flow impeller
(impeller type F)
Fluids containing solids and stringy material
as well as fluids with entrapped air or gas
Impeller with cutter
(impeller type S)
Faeces, domestic sewage and waste water
containing long fibres
Prevention of foreseeable misuse
▪Observe the minimum flow velocities required to fully open the swing check
valves to prevent the reduction of pressure and risk of clogging.
(Contact the manufacturer for the required minimum flow velocities/loss
coefficients.)
▪Never exceed the permissible operating limits specified in the data sheet or
product literature regarding pressure, temperature, etc.
▪Observe all safety information and instructions in this manual.
2.4 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.
2) Minimum permissible flow rate
3) Maximum permissible flow rate
4) Best efficiency point
5) Best efficiency point
2 Safety
Amarex KRT 9 of 64

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.
2.5 Consequences and risks caused by non-compliance with this manual
▪Non-compliance with this operating manual 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
2.6 Safety awareness
In addition to the safety information contained in this manual and the intended use,
the following safety regulations shall be complied with:
▪Accident prevention, health and safety regulations
▪Explosion protection regulations
▪Safety regulations for handling hazardous substances
▪Applicable standards, directives and laws
2.7 Safety information for the operator/user
▪The operator shall fit contact guards for hot, cold and moving parts and check
that the guards function properly.
▪Do not remove any 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.
2.8 Safety information for maintenance, inspection and installation
▪Modifications or alterations of the pump are only permitted with the
manufacturer's prior consent.
▪Use only original spare parts or parts authorised by the manufacturer. The use of
other parts can invalidate any liability of the manufacturer for resulting damage.
▪The operator ensures that maintenance, inspection and installation is 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.
▪The pump casing must have cooled down to ambient temperature.
▪Pump pressure must have been released and the pump must have been drained.
2 Safety
10 of 64 Amarex KRT

▪When taking the pump set out of service always adhere to the procedure
described in the manual. (⇨ Section 6.3 Page 36)
▪Decontaminate pumps which handle fluids posing a health hazard.
▪As soon as the work has been completed, re-install and/or re-activate any safety-
relevant and protective devices. Before returning the product to service, observe
all instructions on commissioning. (⇨ Section 6.1 Page 33)
2.9 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.
2.10 Explosion protection
Always observe the information on explosion protection given in this section when
operating an explosion-proof pump set.
Sections of the manual marked by the Ex symbol apply to explosion-proof pump sets
also when temporarily operated outside potentially explosive atmospheres.
Only pumps/pump sets marked as explosion-proof and identified as such in the data
sheet must be used in potentially explosive atmospheres.
Special conditions apply to the operation of explosion-proof pump sets in accordance
with EC Directive 94/9/EC (ATEX).
Especially adhere to the sections in this manual marked with the Ex symbol.
The explosion-proof status of the pump set is only assured if the pump set is used in
accordance with its intended use.
Never operate the pump (set) outside the limits stated in the data sheet and on the
name plate.
Prevent impermissible modes of operation at all times.
2.10.1 Repair
Special regulations apply to repair work on explosion-proof pumps. Modifications or
alterations of the pump set may affect explosion protection and are only permitted
after consultation with the manufacturer.
!DANGER
2 Safety
Amarex KRT 11 of 64

3 Transport/Temporary 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 (as applicable) and the insurer about the
damage in writing immediately.
3.2 Transport
DANGER
Improper transport
Danger to life from falling parts!
Damage to the pump set!
▷Use the attachment point provided (pump handle) for attaching lifting
accessories.
▷Never suspend the pump set by its power cable.
▷Use the lifting chain/rope included in the scope of supply exclusively for
lowering/lifting the pump set into/out of the pump sump.
▷Securely attach the lifting chain/rope to the pump and crane.
▷Use tested, marked and approved lifting accessories only.
▷Observe any regional transport regulations.
▷Observe the product literature supplied by the lifting accessory manufacturer.
▷The load-carrying capacity of the lifting accessory must be higher than the
weight indicated on the name plate of the pump set to be lifted. Take into
account any additional system components to be lifted.
To transport the pump set suspend it from the lifting tackle as shown.
Fig. 1: Transporting the pump set
Placing down the pump set
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 overturning and tipping
over.
▷Refer to the weights given in the data sheet/on the name plate.
3 Transport/Temporary Storage/Disposal
12 of 64 Amarex KRT

WARNING
Improper handling when placing the pump set in a vertical/horizontal position
Personal injury and damage to property!
▷Use appropriate means to secure the pump set against overturning or tipping
over.
▷Secure power cables against falling.
▷Use additional supports for the transport holder to secure the pump set against
overturning.
▷Maintain adequate safety distance during lifting operations.
WARNING
Placing the pump set on unsecured and uneven surfaces
Personal injury and damage to property!
▷Always place the pump set on a solid and level surface with the pump set in a
vertical position and the motor on top.
▷Only place the pump set on a surface of sufficient load-carrying capacity.
▷Use appropriate means to secure the pump set against overturning or tipping
over.
It may be necessary to place the pump set down in a horizontal position during
maintenance or installation.
3.3 Storage/preservation
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken for pump set storage:
CAUTION
Improper storage
Damage to the power cables!
▷Support the power cables at the cable entry to prevent permanent
deformation.
▷Only remove the protective caps from the power cables at the time of
installation.
CAUTION
Damage during storage by humidity, dirt, or vermin
Corrosion/contamination of the pump (set)!
▷For outdoor storage cover the packed or unpacked 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.
Table 6: Ambient conditions for storage
Ambient condition Value
Relative humidity 5 % to 85 % (non-condensing)
Ambient temperature -20 °C to +70 °C
▪Store the pump set under dry and vibration-free conditions, if possible in its
original packaging.
3 Transport/Temporary Storage/Disposal
Amarex KRT 13 of 64

1. Spray-coat the inside wall of the pump casing, and in particular the impeller
clearance areas, with a preservative.
2. Spray the preservative through the suction and discharge nozzles.
It is advisable to then close the pump nozzles (e.g. with plastic caps or similar).
NOTE
Observe the manufacturer's instructions for application/removal of the preservative.
3.4 Return to supplier
1. Drain the pump as per operating instructions. (⇨ Section 7.3 Page 43)
2. Always flush and clean the pump, particularly if it has been used for handling
noxious, explosive, hot or other hazardous fluids.
3. If the pump set has handled fluids whose residues could lead to corrosion in the
presence of atmospheric humidity or could ignite upon contact with oxygen,
the pump set must also be neutralised, and anhydrous inert gas must be blown
through the pump to ensure drying.
4. Always complete and enclose a certificate of decontamination when returning
the pump (set).
Always indicate any safety and decontamination measures taken. (⇨ Section 11
Page 61)
NOTE
If required, a blank certificate of decontamination can be downloaded from the
KSB web site at: www.ksb.com/certificate_of_decontamination
3.5 Disposal
WARNING
Fluids, 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 residues of the fluid
handled.
▷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.
3 Transport/Temporary Storage/Disposal
14 of 64 Amarex KRT

4 Description of the Pump (Set)
4.1 General description
Pump for handling untreated waste water containing long fibres and solid
substances, fluids containing air/gas, as well as raw, activated and digested sludge.
4.2 Designation
Example: Amarex KRT F 50 - 215 / 32ZEG - S IE3
Table 7: Designation key
Code Description
Amarex KRT Type series
F Impeller type (⇨ Section 2.3 Page 8)
50 Nominal discharge nozzle diameter [mm]
215 Maximum nominal impeller diameter [mm]
3 Motor size
2 Number of motor poles
ZE Motor version
UE Without explosion protection, for fluid temperatures of
up to 40 °C
WE Without explosion protection, for fluid temperatures of
up to 60 °C
XE Explosion-proof to ATEX ll 2G T3, for fluid temperatures
of up to 40 °C
YE Explosion-proof to ATEX ll 2G T4, for fluid temperatures
of up to 40 °C
ZE Explosion-proof, for fluid temperatures of up to 60 °C
G Material variant
G Standard variant, grey cast iron
G1 Like G, with impeller made of duplex stainless steel
G2 Like G, with impeller made of white cast iron
GH Like G, with impeller and discharge cover made of white
cast iron
H Like G, with impeller, discharge cover and pump casing
made of white cast iron
C1 Wetted parts made of duplex stainless steel, mechanical
seal with elastomer bellows, screws/bolts made of A4
C2 Wetted parts made of duplex stainless steel, mechanical
seal with covered spring, screws/bolts made of 1.4462
S Installation type (⇨ Section 4.5 Page 16)
IE3 Motor efficiency classification
6) No efficiency classification
IE3 Efficiency classification7)
6) Blank
7) IEC 60034-30 standard not binding for submersible motor pumps. Efficiencies calculated/determined according to the
measurement method specified in IEC 60034-2. The marking is used for submersible motors that achieve efficiency levels
similar to those of standardised motors acc. to the IEC 60034-30 standard.
4 Description of the Pump (Set)
Amarex KRT 15 of 64

4.3 Name plate
KSB SAS
F-59320 Sequedin
KSB SAS
F-59320 Sequedin
TYPE
No.
Q 25 m
3
/ h
H 10 m 2015
TEMP. MAX. 40 °C 0093 kg
Motor IP 68 SUBM. MAX. 30 m
CLASS H
KA09MN02-120 3 ~
M.-No. 123456
P
2
2,2 kW 400 V
50
Hz
cos φ 0.78
2896 min
-1
4,74 A
I A /I N
6,8
S1
0081
II2G Ex dc IIB T4
WARNUNG - NICHT UNTER SPANNUNG öFFNEN
WARNING - DO NOT OPEN WHEN ENERGIZED
AVERTISSEMENT - NE PAS OUVRIR SOUS TENSION
Mat. No. 39024022 ZN 3826 – M 50
TYPE
Amarex KRT F 50-215 /32 UEG-S IE3
No. 9971682656/000100
Q 25 m
3
/ h
H 10 m 2015
TEMP. MAX. 40 °C 0093 kg
Motor IP 68 SUBM. MAX. 30 m
CLASS H
KA09MN02-120 3 ~
M.-No. 123456
P
2
2,2 kW
400
V
50
Hz
cos φ 0.78
2896 min
-1
4,74 A
I A /I N
6,8
S1
WARNUNG - NICHT UNTER SPANNUNG öFFNEN
WARNING - DO NOT OPEN WHEN ENergized
AVERTISSEMENT - NE PAS OUVRIR SOUS TENSION
Mat. No. 39024022 ZN 3826 – M 51
II2G Ex d IIB T4 Gb IBExU15ATEX1102X
Amarex KRT F 50-215 /32 YEG-S IE3
9971682656/000100
1
a) b)
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
22
21
Fig. 2: Name plate (example) a) for non-explosionproof model, b) for explosion-proof model
1 Designation 2 KSB order number
3 Flow rate 4 Maximum fluid and ambient temperature
5 Total weight 6 Enclosure
7 Motor type 8 Rated power
9 Rated speed 10 Rated voltage
11 Rated current 12 Head
13 Year of construction 14 Maximum submergence
15 Thermal class of winding insulation 16 Motor number
17 Power factor at design point 18 Mode of operation
19 Rated frequency 20 Starting current
21 ATEX marking of submersible motor 22 ATEX marking of pump set
4.4 Design details
Design
▪Fully floodable submersible motor pump
▪Not self-priming
▪Close-coupled design
Impeller type
▪Various, application-based impeller types
Shaft seal
▪Two bi-directional mechanical seals in tandem arrangement, with liquid reservoir
Bearings
▪Grease-lubricated bearings sealed for life
▪Maintenance-free
Drive
▪Three-phase asynchronous squirrel-cage motor
▪Motors integrated in explosion-proof pump sets are supplied in Ex d IIB type of
protection.
4.5 Installation types
▪Installation type S: stationary wet installation (S1 operation with submerged
motor)
▪Installation type P: wet installation of transportable model (S1 operation with
submerged motor)
Pump sets of installation types P and S
are designed for continuously submerged operation. The motor is cooled by the fluid
handled on the motor surface. Operation with the motor outside the fluid handled is
possible for short periods.
4 Description of the Pump (Set)
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4.6 Configuration and function
1
2
3
4
5
6
7
8
9
Fig. 3: Sectional drawing
1 Shaft 2 Bearing housing
3 Pump casing 4 Discharge nozzle
5 Bearing, motor end 6 Bearing, pump end
7 Shaft seal 8 Impeller
9 Suction nozzle
The pump is designed with an axial fluid inlet and a radial outlet. The hydraulic
system sits on the extended motor shaft. The shaft runs in common bearings.
The fluid enters the pump axially via the suction nozzle (9) and is accelerated
outward in a cylindrical flow 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 (4), where it leaves the pump. At the rear
side of the impeller, the shaft (1) enters the hydraulic system via the discharge cover.
The shaft passage through the discharge cover is sealed with a shaft seal (7). The
shaft runs in rolling element bearings (5 and 6), which are supported by a bearing
housing (2).
The pump is sealed by two bi-directional mechanical seals in tandem arrangement.
A lubricant reservoir in-between the seals ensures cooling and lubrication of the
mechanical seals.
4.7 Scope of supply
Depending on the model, the following items are included in the scope of supply:
Wet-installed stationary model (installation type S)
▪Pump set complete with power cables
▪Claw with sealing element (O-ring) and mounting elements
▪Lifting rope/lifting chain
Design
Function
Sealing
4 Description of the Pump (Set)
Amarex KRT 17 of 64

▪Mounting bracket with mounting elements
▪Duckfoot bend with mounting elements
▪Guide wire
(guide rails are not included in KSB's scope of supply)
Wet-installed transportable model (installation type P)
▪Pump set complete with power cables
▪Foot plate or pump stool with mounting elements
▪Lifting rope/lifting chain
A separate name plate is included in KSB's 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 refer to the general arrangement drawing/outline
drawing or data sheet of the pump set.
4 Description of the Pump (Set)
18 of 64 Amarex KRT

5 Installation at Site
5.1 Safety regulations
DANGER
Improper installation in potentially explosive atmospheres
Explosion hazard!
Damage to the pump set!
▷Comply with the applicable local explosion protection regulations.
▷Observe the information given in the data sheet and on the name plate of the
pump set.
DANGER
Risk of falling when working at great heights
Danger to life by falling from a great height!
▷Pay attention to safety equipment, such as railings, covers, barriers, etc.
▷Observe the applicable local occupational safety and accident prevention
regulations.
DANGER
Persons in the tank during pump operation
Electric shock!
▷Never start up the pump set when there are persons in the tank.
WARNING
Hands, other body parts or foreign objects in the propeller or propeller intake area
Risk of injury! Damage to the submersible motor pump!
▷Never insert your hands, other body parts or foreign objects into the propeller
or propeller intake area.
▷Check that the propeller can rotate freely.
WARNING
Impermissible solid objects (tools, screws/bolts or similar) in the pump sump/inlet
tank during pump start-up
Personal injury and damage to property!
▷Check the pump sump/inlet tank for impermissible solid objects before
flooding, and remove, if necessary.
5.2 Checks to be carried out prior to installation
5.2.1 Checking the operating data
Before installing the pump set, verify that the name plate data matches the data
given in the purchase order and the site system data.
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5.2.2 Preparing the place of installation
Place of installation for stationary models
WARNING
Installation on mounting surfaces which are unsecured and cannot support the load
Personal injury and damage to property!
▷Use a concrete of compressive strength class C25/30 which meets the
requirements of exposure class XC1 to EN 206-1.
▷The mounting surface must have set and must be completely horizontal and
even.
▷Observe the weights indicated.
Any resonances at the usual excitation frequencies (1 x and 2 x rotational frequency,
vane passing frequency) must be prevented both in the foundation and in the
connected piping, as such frequencies may cause extreme vibrations.
1. Check the structural requirements.
All structural work required must have been prepared in accordance with the
dimensions stated in the outline drawing/general arrangement drawing.
Place of installation for transportable models
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 overturning and tipping
over.
▷Refer to the weights given in the data sheet/on the name plate.
Any resonances at the usual excitation frequencies (1 x and 2 x rotational frequency,
vane passing frequency) must be prevented both in the foundation and in the
connected piping, as such frequencies may cause extreme vibrations.
1. Check the structural requirements.
All structural work required must have been prepared in accordance with the
dimensions stated in the outline drawing/general arrangement drawing.
5.2.3 Checking the lubricant level
The lubricant reservoirs have been filled with an environmentally-friendly, non-toxic
lubricant at the factory.
1. If no oil leakage is visible in the area of pump casing, impeller or transport
support, the lubricant reservoir is filled properly.
2. If oil leakage is visible in the area of pump casing, impeller or transport support,
top up the lubricant reservoir.
1. Position the pump set as shown.
903
411
Fig. 4: Topping up the lubricant
2. Unscrew and remove screw plug 903 with joint ring 411.
Resonances
Resonances
Visual inspection for signs
of oil leakage
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