KSB Amarex KRT Manual

Cust. Doc. No.:GDSTP-24090-MAN-0003-P2
KSB Doc. No.:KSB-88980-056
KSB REF No: 88980/ 20 & 30
Client : Thiess Pty Ltd
Project : Goodna Sewerage Treatment Plant Upgrage [Stage 4A]
P.O. No. : GDSTP-24090-CON-0000
Equipment / Tag No.: Site Foul Liquor Pumps PU-0110-010/020
: PTA Foul Liquor Pumps PU-0200-010/020
OPERATING AND
MAINTENANCE
INSTRUCTIONS
KSB Australia Pty Ltd
ABN 29 006 414 642
A Quality Endorsed Company AS/NZ ISO9001:2008
Sales and Service
Phone : [phone]
Fax : [phone]
Email : [email protected]
Spares : 1300 KSB SPARES ( 1300 572 772 )
Issue Date: 13/12/2011
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INDEX
1. Pump
•Amarex KRT Pumps Installation/ Operating Manual
2. Additional Data
•Pump Data Sheet (Site Foul Liquor)
•Pump Data Sheet (PTA Foul Liquor)
3. Drawings
•Certified G.A. Drawing No.A3-UK00019 (Site Foul Liquor Pumps)
•Certified G.A. Drawing No.A3-UK00018 (PTA Foul Liquor Pumps )
4. Tests
•I.T.P.s (Site Foul Liquor Pumps)
•I.T.P.s (PTA Foul Liquor Pumps)
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Submersible Motor Pump
Amarex KRT
Pump sizes DN 40 to DN 300
Motor sizes:
2-pole 5 2 to 55 2
4-pole 5 4 to 65 4
6-pole 4 6 to 50 6
8-pole 10 8 to 35 8
Installation/Operating
Manual
Ident number: 01196129
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Installation/Operating Manual Amarex KRT
Original operating manual
KSB Aktiengesellschaft Pegnitz
All rights reserved. Contents provided herein must neither be distributed, copied, reproduced,
processed for any other purpose, nor otherwise transmitted to a third party without KSB´s express
written consent.
Subject to technical modification without prior notice.
© KSB Aktiengesellschaft Frankenthal 05.01.2009
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Contents
Glossary ................................................................................................ 5
1 General ................................................................................................ 6
1.1 Principles .......................................................................................................... 6
1.2 Installation of partly completed machinery .................................................. 6
1.3 Target group ................................................................................................... 7
1.4 Other applicable documents .......................................................................... 7
1.5 Symbols ............................................................................................................ 7
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 ........................................................... 10
2.5 Consequences and risks caused by non-compliance with these operating
instructions .................................................................................................... 10
2.6 Safety awareness ........................................................................................... 10
2.7 Safety instructions for the operator/user .................................................... 10
2.8 Safety information for maintenance, inspection and installation work ... 11
2.9 Unauthorised modes of operation ............................................................... 11
2.10 Explosion protection ..................................................................................... 11
3 Transport/Temporary Storage/Disposal ........................................... 13
3.1 Transport ....................................................................................................... 13
3.2 Storage and preservation ............................................................................. 13
3.3 Return to supplier ......................................................................................... 14
3.4 Disposal .......................................................................................................... 14
4 Description of the Pump (Set) .......................................................... 15
4.1 General description ....................................................................................... 15
4.2 Designation ................................................................................................... 15
4.3 Name plate .................................................................................................... 15
4.4 Design details ................................................................................................ 16
4.5 Types of installation ...................................................................................... 16
4.6 Design 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 Checking the site before installation ........................................................... 19
5.3 Installing the pump set ................................................................................. 21
5.4 Electrical connection ..................................................................................... 27
Contents
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6 Commissioning/Start-up/Shutdown ................................................. 32
6.1 Commissioning/start-up ................................................................................ 32
6.2 Operating limits ............................................................................................ 32
6.3 Shutdown/storage/preservation ................................................................... 35
6.4 Returning to service ...................................................................................... 35
7 Servicing/Maintenance ...................................................................... 37
7.1 Safety regulations ......................................................................................... 37
7.2 Servicing/inspection ...................................................................................... 37
7.3 Drainage/disposal .......................................................................................... 43
7.4 Dismantling the pump set ............................................................................ 43
7.5 Reassembling the pump set .......................................................................... 46
7.6 Tightening torques ....................................................................................... 52
7.7 Spare parts stock ........................................................................................... 52
8 Trouble-shooting ............................................................................... 54
9 Related Documents ........................................................................... 55
9.1 General assembly drawings .......................................................................... 55
9.2 Wiring diagrams ............................................................................................ 67
9.3 Flamepaths of explosion-proof motors ....................................................... 68
9.4 Sectional drawings of the mechanical seal .................................................. 69
10 EC Declaration of Conformity .......................................................... 71
11 Certificate of Decontamination ....................................................... 72
Index .................................................................................................. 73
Contents
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Glossary
Back pull-out unit
Pump without pump casing; partly completed
machinery
Certificate of decontamination
A certificate of decontamination certifies that
the pump (set) 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
Hydraulic system
The part of the pump in which the kinetic
energy is converted into pressure energy.
Glossary
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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, please refer to the table below).
Table 1: Variants covered by this manual
Pump
sizes
Impeller
types
Material variants
Cast iron Industrial materials
G G1 G2 GH H C1 C2
40-250 F, K, S F, K, S F,K F F, K F, K F, K F, K
80-250 E, F E, F F F F - - -
80-251 F F - - - - - -
80-315 D, E, F,
K
D, E, F,
K
D, F, K F F, K F, K F, K F, K
80-316 F F - - - - - -
100-240 F F F F F F F F
100-250 E, F, K E, F, K F, K F F, K F, K F, K F, K
100-251 D D D - - - - -
100-315 D, E, F,
K
D, E, F,
K
D, F, K F F, K F, K F, K F, K
100-316 D D D - - - - -
100-401 E, F, K E, F, K F, K F F, K F, K F, K F, K
150-251 D D D - - - - -
150-315 D, E, F,
K
D, E, F,
K
D, F, K F F, K F, K F, K F, K
150-400 D D D - - - - -
150-401 D, E, F,
K
D, E, F,
K
D, F F F,K F, K F, K F, K
151-401 K K K - K K K K
200-315 D, K D,K D, K - K K K K
200-316 K K - - K K K K
200-330 K K K - K K K K
200-400 D D D - - - - -
200-401 E, K E, K K - K K K K
250-400 D, K D,K D, K - K K K K
250-401 K K K - K K K K
300-400 D, K D, K D, K - K K K K
300-401 K K K - K K K K
This 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 case of damage, immediately contact your nearest KSB Service centre to maintain
the right to claim under warranty.
1.2 Installation of partly completed machinery
To install partly completed machinery supplied by KSB, please refer to the sub-
sections under Servicing/Maintenance.
1 General
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1.3 Target group
This manual is aimed at the target group of trained and qualified specialist technical
personnel. (⇨ Section 2.4 Page 10)
1.4 Other applicable documents
Table 2: Overview of other applicable documents
Document Contents
Technical 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
Hydraulic characteristic curve Characteristic curves showing head, flow rate,
efficiency and power input
General assembly drawing1) Sectional drawing of the pump set
Sub-supplier documentation1) Operating manuals and other documentation
of accessories and integrated machinery
components
Spare parts lists1) Description of spare parts
Supplementary operating
instructions1)
For example for special accessories
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.
2.
Step-by-step instructions
Note
Recommendations and important information on how to handle
the product
1) If agreed to be included in the scope of supply
1 General
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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 injury and
damage to property.
The safety instructions in all sections of this manual must be complied with.
This manual must be read and completely understood by the responsible specialist
personnel/operators prior to installation and commissioning.
The contents of this manual must be available to the specialist personnel at the site
at all times.
Instructions 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 meeting all local regulations which are not taken into
account in this manual.
2.3 Intended use
Only operate the pump (set) within the application limits specified in the other
applicable documents.
▪Only operate pump sets which are in perfect technical condition.
▪Do not operate partially assembled pump sets.
!DANGER
2 Safety
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▪Only use the pump to handle the fluids described in the data sheet or product
literature of the pump model.
▪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) ) (prevention of damage such as shaft
fracture, bearing failure, damaged mechanical seal, etc).
▪When handling untreated waste water 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 Qopt4) ).
▪Observe the information on the maximum flow rates provided in the data sheet
or technical product literature (prevention of overheating damage, cavitation
damage, bearing damage, etc).
▪Do not throttle the flow rate on the suction side of the system (prevention of
cavitation damage).
▪For any operating modes which are not specified in the data sheet or product
literature, contact the manufacturer.
▪Only use the respective impeller types in combination with the fluids described
below.
Impeller with cutter
(impeller type S)
Suitable for the following fluids:
Faeces, domestic sewage and waste water
containing long fibres
Free-flow impeller
(impeller type F)
Suitable for the following fluids:
Fluids containing solids and stringy
material as well as fluids with entrapped
air or gas
Closed single vane
impeller
(impeller type E)
Suitable for the following fluids:
Fluids containing solids and stringy
material
Closed multi-vane
impeller
(impeller type K)
Suitable for the following fluids:
Contaminated, solids-laden, non-gaseous
fluids not liable to plait
2) Minimum permissible flow rate
3) Maximum permissible flow rate
4) Optimum efficiency
2 Safety
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Open, diagonal single
vane impeller
(impeller type D)
Suitable for the following fluids:
Waste water with solid substances and
long fibres
Prevention of foreseeable misuse
▪Observe the minimum flow velocities for fully open 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 application limits specified in the data sheet and in
the product literature regarding pressure, temperature, etc.
▪Observe all safety notes and instructions in this manual.
2.4 Personnel qualification and training
All personnel involved must be fully qualified to install, operate, maintain and
inspect the machinery this manual refers to.
The responsibilities, competence and supervision of all personnel involved in
installation, operation, maintenance and inspection must be clearly defined by the
operator.
Deficits in knowledge must be rectified by sufficiently trained specialist personnel
training and instructing the personnel who will carry out the respective tasks. 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 these operating
instructions
▪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
2.6 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 and laws
2.7 Safety instructions for the operator/user
▪The operator shall fit contact guards for hot, cold and moving parts, and check
that the guards function properly.
▪Never remove the contact guard when the pump is in operation.
2 Safety
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▪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.)
2.8 Safety information for maintenance, inspection and installation work
▪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 consequential
damage.
▪The operator ensures that all maintenance, inspection and installation work is
performed by authorised, qualified specialist personnel who are thoroughly
familiar with the manual.
▪Carry out work on the pump (set) during standstill only.
▪The pump casing must have cooled down to ambient temperature.
▪Pump pressure must have been released and the pump must have been drained.
▪When taking the pump set out of service always adhere to the procedure
described in the manual.
▪Decontaminate pumps which handle fluids posing a health hazard.
▪As soon as the work is complete, 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 32)
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).
When operating explosion-proof pump sets, especially adhere to the additional
requirements marked by 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
alteration of the pump set may affect explosion protection and are only permitted
after consultation with the manufacturer.
!DANGER
2 Safety
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Repair work at the flameproof joints must only be performed in accordance with the
manufacturer's instructions. Repair to the values in tables 1 and 2 of EN 60079-1 is
not permitted.
2 Safety
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3 Transport/Temporary Storage/Disposal
3.1 Transport
DANGER
Improper transport
Danger to life from falling parts!
Damage to the pump set!
▷Use the attachment point provided (eyebolt, lifting lug or bail) for attaching
lifting tackle.
▷Never suspend the pump set by its power cable.
▷Never use the chains or lifting ropes included in KSB's scope of supply for lifting
loads other than the KSB product supplied.
▷Securely attach the lifting ropes or chains to the pump and crane.
Transport the pump set as illustrated.
Fig. 1: Transporting the pump set
3.2 Storage and preservation
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken for pump 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 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 set!
▷Only remove caps/covers from the openings of the pump set at the time of
installation.
3 Transport/Temporary Storage/Disposal
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Table 5: Ambient conditions for storage
Ambient conditions Value
Relative humidity 5 % to 85 %
(non-condensing)
Ambient temperature - 10 °C to + 70 °C
▪Store the pump set under dry and vibration-free conditions, if possible in its
original packaging.
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.
3.3 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 fluids handled by the pump leave residues which might lead to corrosion
damage when coming into contact with atmospheric humidity, or which might
ignite when coming into contact with oxygen, the pump set must also be
neutralised, and anhydrous gas must be blown through the pump for drying
purposes.
4. Always complete and enclose a certificate of decontamination when returning
the pump (set). (⇨ Section 11 Page 72)
Always indicate the safety and decontamination measures taken.
NOTE
If required, a blank certificate of decontamination can be downloaded from the KSB web
site at: www.ksb.com/certificate_of_decontamination
3.4 Disposal
WARNING
Fluids posing a health hazard
Hazardous to persons and the environment!
▷Collect and properly dispose of flushing liquid 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 acc. with local regulations or in another controlled
manner.
3 Transport/Temporary Storage/Disposal
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4 Description of the Pump (Set)
4.1 General description
Pump for handling untreated waste water containing long fibres and solid
substances, fluids containing gas and air as well as raw, activated and digested
sludge. (⇨ Section 2.3 Page 8)
4.2 Designation
Example: KRTK 150-315/164XG-S
Table 6: Key to the designation
Code Description
KRT Type series
K Impeller type, e.g. K = channel impeller
150 Nominal discharge nozzle diameter (DN) [mm]
315 Maximum nominal impeller diameter [mm]
16 Motor size
4 Number of poles
X Motor version e.g. X = explosion-proof to ATEX II 2GT3
G Material variant e.g., G = complete pump in cast iron
S Installation type, e.g. S = stationary wet installation
without cooling system
4.3 Name plate
Typ
No. 9971143406
Q 300 m3/h
P2 16 kW
400/690 V 50 Hz
cos φ 0,81
40 °C
33/19 A
1475 min-1
Aktiengesellschaft
67227 Frankenthal
Ident-No. 01080556 ZN 3826-M12
2007
IP 68 S1 IA/IN 4,9 150 kg Class F
DKN 160.4-12 3~
H 14 m
M.-No. 123456
Nicht unter Spannung öffnen.
Ne pas ouvrir sous tension.
Non aprire con motore sotto tensione.
Non abrir bajo tensión.
Do not open while energised.
2
1
3
4
5
6
7
8
9
10
11
12
13
14
15
17
18
19
16
Amarex KRTK 150-315/164UG-S Typ Amarex KRTK 150-315/164XG-S
No. 9971143406 2007
Q300 m3/h
DKN 160.4-12 3~
P2 16 kW
1475 min-1
400/690 V
33/19 A
IP 68 S1 Ia/In4,9 150 kg
H14 m
M.-No. 123456
50 Hz 40 °C
cos φ 0,81
WARNING - DO NOT OPEN WHEN ENERGIZED
WARNUNG - NICHT UNTER SPANNUNG ÖFFNEN
AVERTISSEMENT - NE PAS OUVRIR SOUS TENSION
Ident-No.
01080556
ZN 3826-M16
Aktiengesellschaft
67227 Frankenthal
0035 II2G Ex d IIB
T 3 PTB 02 Atex 1055
Class F
20
20
a) b)
Fig. 2: Name plate a) Standard pump set b) Explosion-proof pump set
1 Designation (⇨ Section 4.2 Page 15) 2 KSB order number
3 Flow rate 4 Motor type
5 Rated power 6 Rated speed
7 Rated voltage 8 Rated current
9 Enclosure 10 Mode of operation
11 Starting current ratio 12 Year of construction
13 Head 14 Motor number
15 Maximum fluid and ambient temperature 16 Rated frequency
17 Power factor at design point 18 Thermal class of winding insulation
19 Total weight 20 Marking for explosion-proof pump sets
4 Description of the Pump (Set)
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4.4 Design details
Design
▪Fully floodable submersible motor pump
▪Not self-priming
▪Close-coupled design
Impeller type
▪Various, application-based impeller types (⇨ Section 2.3 Page 8)
Shaft seal
▪Two bi-directional mechanical seals in tandem arrangement, with liquid reservoir
▪Reinforced bearings with leakage chamber
Standard bearing assembly
▪Grease-packed bearings sealed for life
▪Maintenance-free
Reinforced bearing assembly
Motor-end bearing:
▪Grease-packed bearings sealed for life
▪Maintenance-free
Pump-end bearing:
▪Grease-packed bearings sealed for life
▪Re-lubrication possible
The following hydraulic system/motor combinations have reinforced bearings:
Table 7: Reinforced bearings
Size of
hydraulic
system
Motor size and number of poles
372 552 554 504 654
D 80-315 X X - - -
D 100-315 X X - - -
D 150-400 - - X X X
D 150-401 - - - X X
D 200-400 - - - X X
D 250-400 - - X X X
Drive
▪Three-phase asynchronous squirrel-cage motor
Explosion-proof pump sets are supplied with an integrated motor of Ex d IIB type of
protection.
4.5 Types of installation
Two design variants are available, depending on the installation type:
▪Stationary wet installation (type of installation S)
▪Transportable wet installation (type of installation P)
The pump set is designed for continuous operation in submerged condition. 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)
16 of 74 Amarex KRT
Goodnal STP ST041 Sewage Delivery (Amarex KRT Submersible Motor Pump) Vendor Manual
Q-Pulse Id VM362
Active 29/10/2013
Page 18 of 96

4.6 Design and function
1
3
4
6
7
8
9
10
5
2
Fig. 3: Sectional drawing
1 Casing wear ring 2 Discharge nozzle
3 Discharge cover 4 Shaft
5 Bearing bracket 6 Suction nozzle
7 Impeller 8 Shaft seal
9 Bearing, pump end 10 Bearing, motor end
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 a suction nozzle (6) and is accelerated outward
in a cylindrical flow by the rotating impeller (7). The flow profile of the pump casing
converts the kinetic energy of the fluid into pressure energy. The fluid is pumped to
the discharge nozzle (2), where it leaves the pump. The casing wear ring (1) prevents
any fluid from flowing back from the casing into the inlet. At the rear side of the
impeller, the shaft (4) enters the casing via the discharge cover (3). The shaft passage
through the discharge cover is sealed towards the atmosphere with a shaft seal (8).
The shaft runs in rolling element bearings (9 and 10), which are supported by a
bearing bracket (5) linked with the pump casing and/or discharge cover.
The pump is sealed by two bi-rotational mechanical seals in tandem arrangement.
A lubricant reservoir in-between the seal elements 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:
Stationary wet installation (type of installation S)
▪Pump set complete with electric cables
▪Claw with sealing material and mounting elements
▪Lifting rope or chain
▪Mounting bracket with mounting elements
Design
Function
Sealing
4 Description of the Pump (Set)
Amarex KRT 17 of 74
Goodnal STP ST041 Sewage Delivery (Amarex KRT Submersible Motor Pump) Vendor Manual
Q-Pulse Id VM362
Active 29/10/2013
Page 19 of 96

▪Duckfoot bend with mounting elements
▪Guiding equipment
(guide rails are not included in KSB's scope of supply)
Transportable wet installation (type of installation P)
▪Pump set complete with electric cables
▪Foot pad or pump stool with mounting elements
▪Lifting rope or chain
NOTE
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 please refer to the general arrangement drawing/outline
drawing or data sheet of the pump set.
4 Description of the Pump (Set)
18 of 74 Amarex KRT
Goodnal STP ST041 Sewage Delivery (Amarex KRT Submersible Motor Pump) Vendor Manual
Q-Pulse Id VM362
Active 29/10/2013
Page 20 of 96