KSB Amarex KRT Installation instructions

Submersible Motor Pump
Amarex KRT
for use in the Amajet system
50 Hz
Installation/Operating Manual
Mat. No.: 01232461

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 08.06.2016

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 ...........................................................................................................................................................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 .............................................................................................................9
2.5 Consequences and risks caused by non-compliance with this manual .......................................................9
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 ..............................................................................................................10
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 ....................................................................................................................................................15
4.4 Design details ................................................................................................................................................15
4.5 Installation types ..........................................................................................................................................16
4.6 Configuration and function .........................................................................................................................16
4.7 Noise characteristics .....................................................................................................................................17
4.8 Scope of supply .............................................................................................................................................17
4.9 Dimensions and weights ..............................................................................................................................17
5 Installation at Site ....................................................................................................................... 18
5.1 Safety regulations .........................................................................................................................................18
5.2 Checks to be carried out prior to installation .............................................................................................18
5.3 Installing the pump set ................................................................................................................................20
Contents
Amarex KRT 3 of 66

5.4 Electrical system ............................................................................................................................................20
6 Commissioning/Start-up/Shutdown ........................................................................................... 26
6.1 Commissioning/start-up ...............................................................................................................................26
6.2 Operating limits ............................................................................................................................................27
6.3 Shutdown/storage/preservation ..................................................................................................................29
6.4 Returning to service .....................................................................................................................................29
7 Servicing/Maintenance ............................................................................................................... 31
7.1 Safety regulations .........................................................................................................................................31
7.2 Maintenance/inspection ...............................................................................................................................32
7.3 Drainage/cleaning ........................................................................................................................................36
7.4 Dismantling the pump set ............................................................................................................................36
7.5 Reassembling the pump set .........................................................................................................................40
7.6 Tightening torques .......................................................................................................................................44
7.7 Spare parts stock ...........................................................................................................................................44
8 Faults: Causes and Remedies ...................................................................................................... 46
9 Related Documents .................................................................................................................... 48
9.1 General assembly drawings .........................................................................................................................48
9.2 Wiring diagrams ...........................................................................................................................................56
9.3 Flamepaths on explosion-proof motors ......................................................................................................59
9.4 Sectional drawings of the mechanical seal .................................................................................................60
10 EU Declaration of Conformity ................................................................................................... 63
11 Certificate of Decontamination ................................................................................................. 64
Index ............................................................................................................................................ 65
Contents
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Glossary
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.
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 66

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
100-250 F F F F F F F F
100-251 D D D - - - - -
100-316 D D D - - - - -
150-251 D D D - - - - -
150-315 D, F D, F D, F F F F F F
150-401 F F F F F F F F
The 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 centre 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.
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) If agreed to be included in the scope of supply
1 General
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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 General
Amarex KRT 7 of 66

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
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.
2.2 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 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 (Qmin and Qmax) (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 Qopt to minimise the risk of clogging/hardening.
▪Avoid duty points for continuous operation at very low speeds and small flow
rates (< 0.7 x Qopt).
▪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 described
below.
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 entrapped gas
Open, diagonal single-vane
impeller
(impeller type D)
Suitable for the following fluids
fluids containing solid substances and 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.
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
2 Safety
Amarex KRT 9 of 66

– 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.
▪When taking the pump set out of service always adhere to the procedure
described in the manual. (⇨ Section 6.3 Page 29)
▪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 26)
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 Safety
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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 of 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 an explosion-proof pump set to EC
Directive 2014/34/EU (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 can affect explosion protection and are only permitted
after consultation with the manufacturer.
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.
!DANGER
2 Safety
Amarex KRT 11 of 66

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 for attaching the lifting accessory.
▷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 installation/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 66 Amarex KRT

WARNING
Improper placing of pump sets in a vertical/horizontal position
Personal injury and damage to property!
▷Use appropriate means to secure the pump set against overturning or tipping
over.
▷Use two lifting devices when handling large pump sets, if possible (using the
attachment point provided on the motor and the discharge nozzle).
▷Secure power cables against falling.
▷Use additional supports for the transport holder to secure the pump set against
overturning.
▷Maintain sufficient safety distance when lifting the pump set.
WARNING
Improper lifting/moving of heavy assemblies or components
Personal injury and damage to property!
▷Use suitable transport devices, lifting equipment and lifting tackle to move
heavy assemblies or components.
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 5: 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.
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).
3 Transport/Temporary Storage/Disposal
Amarex KRT 13 of 66

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 36)
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
damage 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 64)
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 66 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 K 150-315/164XKG-S
Table 6: Designation key
Code Description
Amarex 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
K S1 operation with motors outside the fluid
G Material variant, e.g. G = complete pump in grey cast iron
S Installation type, e.g. S = stationary wet installation
without cooling system
4.3 Name plate
Aktiengesellschaft
Johann-Klein-Straße 9
67227 Frankenthal
Aktiengesellschaft
Johann-Klein-Straße 9
67227 Frankenthal
TYPE
Amarex KRTK 150-315 /164 XG-S
No. 9971235943/000100
Q 300 m
3
/ h
H 14 m 2016
TEMP. MAX. 40 °C 0150 kg
Motor IP 68 SUBM. MAX. 30 m
CLASS F
DKN 160.4-12 3 ~
M.-No. 123456
P
2
16 kW 400/690 V
50
Hz
cos φ 0.81
1480 min
-1
14,3/8,3 A
I A /I N
4,9
S1
0035
II2G Ex dc IIB T3
WARNUNG - NICHT UNTER SPANNUNG öFFNEN
WARNING - DO NOT OPEN WHEN EN ERGIZED
AVERTISSEMENT - NE PAS OUVRIR SOUS TENSION
Mat. No. 01231886 ZN 3826 – M 29
TYPE
Amarex KRTK 150-315 /164 UG-S
No. 9971235943/000100
Q 300 m
3
/ h
H 14 m 2016
TEMP. MAX. 40 °C 0150 kg
Motor IP 68 SUBM. MAX. 30 m
CLASS F
DKN 160.4-12 3 ~
M.-No. 123456
P
2
16 kW 400/690 V
50
Hz
cos φ 0.81
1480 min
-1
14,3/8,3 A
I A /I N
4,9
S1
WARNUNG - NICHT UNTER SPANNUNG öFFNEN
WARNING - DO NOT OPEN WHEN EN ERGIZED
AVERTISSEMENT - NE PAS OUVRIR SOUS TENSION
Mat. No. 01232061 ZN 3826 – M 34
II2G Ex d IIB T3 PTB 10 Atex 1027X
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) Standard pump set b) Explosion-proof pump set
1 Designation (⇨ Section 4.2 Page 15) 2 KSB order number and KSB order item
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 ratio
21 ATEX marking for the submersible motor 22 Marking for explosion-proof pump sets
4.4 Design details
Design
▪Fully floodable submersible motor pump
▪Not self-priming
4 Description of the Pump (Set)
Amarex KRT 15 of 66

▪Close-coupled design
Impeller type
▪Various application-oriented 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
See Amajet installation/operating manual.
4.6 Configuration and function
1
3
4
6
7
8
9
10
5
2
Fig. 3: Sectional drawing
1Casing 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 the suction nozzle (6) and is accelerated
outward by the rotating impeller (7). 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 casing wear ring (1) prevents
Design
Function
4 Description of the Pump (Set)
16 of 66 Amarex KRT

any fluid from flowing back from the casing into the suction nozzle. At the rear side
of the impeller, the shaft (4) enters the casing via the discharge cover (3). The shaft
passage through the cover is sealed to atmosphere with a shaft seal (8). The shaft
runs in rolling element bearings (9 and 10), which are supported by a bearing bracket
(5) connected to the pump casing and/or discharge cover.
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 Noise characteristics
Table 7: Surface sound pressure level LpA2)
Rated power input
PN
[kW]
Pump set
1450 rpm
[dB]
4 62
5.5 63.5
7.5 65
11 67
15 68
18.5 68.5
22 69
30 70.5
37 71
45 71
55 71.5
65 72
4.8 Scope of supply
See Amajet installation/operating manual.
4.9 Dimensions and weights
For dimensions and weights refer to the general arrangement drawing/outline
drawing or data sheet of the pump set.
Sealing
2) Measured at a distance of 1 m from the pump outline (as per DIN 45635 Part 1 and 24)
4 Description of the Pump (Set)
Amarex KRT 17 of 66

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!
Risk of injury!
Danger of death from drowning!
▷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.
5.2.2 Preparing the place of installation
See Amajet installation/operating manual.
5 Installation at Site
18 of 66 Amarex KRT

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 or impeller, the lubricant
reservoir is filled properly.
2. If oil leakage is visible in the area of pump casing or impeller, top up the
lubricant reservoir.
WARNING
Incorrect installation/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.
903.03
411.03
903.03
411.03
Fig. 4: Checking the lubricant level
✓Signs of oil leakage have been detected.
1. Position the pump set as shown.
2. Secure the pump set against tipping over.
3. Remove screw plug 903.03 and joint ring 411.03.
4. Check the lubricant level.
⇨If the lubricant level reaches the opening, fit and tighten screw plug 903.03
with joint ring 411.03 again.
⇨If the lubricant level is below the opening, top up the lubricant. (⇨ Section
7.2.2.1.4 Page 35)
5. Fit screw plug 903.03 together with a new joint ring 411.03.
Also see
●Changing the lubricant [⇨ 35]
5.2.4 Checking the direction of rotation
DANGER
Pump set running dry
Explosion hazard!
▷Check the direction of rotation of explosion-proof pump sets outside
potentially explosive atmospheres.
Visual inspection for signs
of oil leakage
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WARNING
Hands or objects inside the pump casing
Risk of injuries, damage to the pump!
▷Never insert your hands or any other objects into the pump.
▷Check that the inside of the pump is free from any foreign objects.
▷Take suitable precautions (e.g. wear safety goggles, etc).
WARNING
Improper positioning of pump set when checking the direction of rotation
Personal injury and damage to property!
▷Use appropriate means to secure the pump set against overturning or tipping
over.
CAUTION
Pump set running dry
Increased vibrations!
Damage to mechanical seals and bearings!
▷Never operate the pump set for more than 60 seconds outside the fluid to be
handled.
✓The pump set is connected to the power supply.
1. Start the pump set and stop it again immediately to determine the motor's
direction of rotation.
2. Check the direction of rotation.
Impeller rotation must be anti-clockwise (seen from the pump mouth end). On
some pump casings, the direction of rotation is marked by an arrow.
Fig. 5: Checking the direction of rotation
3. If the impeller is running in the wrong direction of rotation, check the electrical
connection of the pump and the control system, if necessary.
4. Disconnect the pump set from the power supply and make sure it cannot be
switched on accidentally.
5.3 Installing the pump set
See Amajet installation/operating manual.
5.4 Electrical system
5.4.1 Information for planning the control system
For the electrical connection of the pump set observe the "Wiring diagrams" section.
The pump set is supplied with power cables; it is wired for DOL starting. Star-delta
starting is also possible.
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