KSB Amarex N User manual

Submersible Motor Pump
Amarex N
Pump Sizes DN 50 to DN 100
Motors:
2 Poles: 002 to 042
4 Poles: 004 to 044
Non-ATEX
Installation/Operating Manual

Legal information/Copyright
Installation/Operating Manual Amarex N
Original operating manual
All rights reserved. The contents provided herein must neither be distributed, copied, reproduced,
edited or processed for any other purpose, nor otherwise transmitted, published or made available to a
third party without the manufacturer's express written consent.
Subject to technical modification without prior notice.
© KSB SE & Co. KGaA, Frankenthal 12/03/2018

Contents
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Amarex N
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 .......................................................10
2.6 Safety awareness ............................................................................................................................................10
2.7 Safety information for the operator/user.....................................................................................................10
2.8 Safety information for maintenance, inspection and installation work.....................................................10
2.9 Unauthorised modes of operation................................................................................................................11
2.10 Explosion protection ......................................................................................................................................11
2.10.1 Repair..................................................................................................................................................11
3 Transport/Temporary Storage/Disposal............................................................................................. 12
3.1 Checking the condition upon delivery..........................................................................................................12
3.2 Transport.........................................................................................................................................................12
3.3 Storage/Preservation ......................................................................................................................................12
3.4 Return to supplier...........................................................................................................................................13
3.5 Disposal ...........................................................................................................................................................13
4 Description of the Pump (Set)............................................................................................................. 14
4.1 General description ........................................................................................................................................14
4.2 Designation.....................................................................................................................................................14
4.3 Name plate......................................................................................................................................................14
4.4 Design details..................................................................................................................................................15
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
5.2.1 Preparing the place of installation ...................................................................................................19
5.2.2 Checking the lubricant level..............................................................................................................20
5.2.3 Checking the direction of rotation ...................................................................................................20
5.3 Installing the pump set ..................................................................................................................................21
5.3.1 Stationary wet installation................................................................................................................21
5.3.2 Transportable wet installation..........................................................................................................27
5.4 Electrical system..............................................................................................................................................28
5.4.1 Information for planning the control system ..................................................................................28
5.4.2 Electrical connection..........................................................................................................................31
6 Commissioning/Start-up/Shutdown................................................................................................... 34
6.1 Commissioning/start-up .................................................................................................................................34
6.1.1 Preconditions for commissioning/startup.........................................................................................34
6.1.2 Start-up...............................................................................................................................................34
6.2 Operating limits..............................................................................................................................................35
6.2.1 Frequency of starts.............................................................................................................................35
6.2.2 Supply voltage....................................................................................................................................35

Contents
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6.2.3 Frequency inverter operation ...........................................................................................................35
6.2.4 Fluid handled .....................................................................................................................................36
6.3 Shutdown/storage/preservation ....................................................................................................................37
6.3.1 Measures to be taken for shutdown ................................................................................................37
6.4 Returning to service .......................................................................................................................................38
7 Servicing/Maintenance........................................................................................................................ 39
7.1 Safety regulations...........................................................................................................................................39
7.2 Maintenance/inspection.................................................................................................................................40
7.2.1 Inspection work..................................................................................................................................40
7.2.2 Lubrication and lubricant change.....................................................................................................42
7.3 Drainage/cleaning ..........................................................................................................................................45
7.4 Dismantling the pump set..............................................................................................................................45
7.4.1 General information/Safety regulations...........................................................................................45
7.4.2 Preparing the pump set.....................................................................................................................46
7.4.3 Dismantling the pump section ..........................................................................................................46
7.4.4 Removing the mechanical seal and motor section ..........................................................................46
7.5 Reassembling the pump set...........................................................................................................................48
7.5.1 General information/Safety regulations...........................................................................................48
7.5.2 Reassembling the pump section .......................................................................................................48
7.5.3 Reassambling the motor section.......................................................................................................51
7.5.4 Leak testing (versions YLG - WLG) ....................................................................................................51
7.5.5 Checking the connection of motor/power supply ..........................................................................51
7.6 Tightening torques.........................................................................................................................................52
7.7 Spare parts stock.............................................................................................................................................52
7.7.1 Ordering spare parts..........................................................................................................................52
7.7.2 Recommended spare parts stock for 2 years' operation to DIN 24296 ..........................................52
7.7.3 Sets of spare parts..............................................................................................................................53
8 Trouble-shooting.................................................................................................................................. 54
9 Related Documents.............................................................................................................................. 55
9.1 General assembly drawing with list of components ....................................................................................55
9.1.1 Amarex N — version ULG ..................................................................................................................55
9.1.2 Amarex N — version YLG/WLG .........................................................................................................56
9.1.3 Exploded views...................................................................................................................................57
9.2 Wiring diagrams .............................................................................................................................................61
9.2.1 Version WLG/YLG...............................................................................................................................61
9.2.2 Version ULG........................................................................................................................................62
9.3 Wiring diagrams overload protection...........................................................................................................63
9.4 Flamepaths on explosion-proof motors........................................................................................................64
9.5 Installation drawings of the mechanical seal ...............................................................................................66
10 EU Declaration of Conformity............................................................................................................. 67
11 Certificate of Decontamination........................................................................................................... 68
Index ..................................................................................................................................................... 69

Glossary
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Amarex N
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
Hydraulic system
The part of the pump in which the kinetic energy
is converted into pressure energy

1 General
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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
Sizes Impeller
types
Material variant
G G1 G2 GH1)
50-170 F, S F, S F F F
50-172 S S - - -
50-220 F, S F, S F F F
50-222 S S - - -
65-170 F F F F F
65-220 F F F F F
80-220 F, D F, D F F F
100-220 F, D F, D F F F
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, 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. (ð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 drawing2) Sectional drawing of the pump
Spare parts lists2) Description of spare parts
Supplementary operating
manuals2)
e.g. for installation parts for stationary wet
installation
For accessories and/or integrated machinery components observe the relevant
manufacturer's product literature.
1) Variant GH only for pump sets WL and YL
2) If agreed to be included in the scope of supply

1 General
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Amarex N
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

2 Safety
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2 Safety
!DANGER
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.

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 duty 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×Qopt to minimise the risk of clogging/hardening.
▪Avoid duty points for continuous operation at very low speeds and small flow
rates (<0.7×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.
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 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 Safety
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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 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 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 resulting 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.
▪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. (ðSection6.3,Page37)
▪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. (ðSection6.1,Page34)

2 Safety
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Amarex N
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
!DANGER
Always observe the information on explosion protection given in this section when
operating an explosion-proof pump set.
Sections of the manual marked with the symbol opposite 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 symbol opposite.
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 could 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.

3 Transport/Temporary Storage/Disposal
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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.
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 due to 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 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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Amarex N
Table5: Ambient conditions for storage
Ambient conditions Value
Relative humidity 5 % to 85 %
(non-condensing)
Ambient temperature - 20 ℃ 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.
3.4 Return to supplier
1. Drain the pump as per operating instructions. (ðSection7.3,Page45)
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.
(ðSection11,Page68)
NOTE
If required, a blank certificate of decontamination can be downloaded from the
following web site: www.ksb.com/certificate_of_decontamination
3.5 Disposal
WARNING
Fluids, 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.

4 Description of the Pump (Set)
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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 air/gas as well as raw, activated and digested sludge.
4.2 Designation
Example: Amarex N F 50 - 170 / 012 YLG 120
Table6: Designation key
Code Description
Amarex N Type series
F Impeller type, e.g. F = free flow impeller
50 Nominal discharge nozzle diameter [mm]
170 Code number for hydraulic system size
01 Code number for motor size
2 Number of poles
YL Motor version, e.g. YL = with explosion protection T4 (40
°C)
G Casing material, e.g. G = grey cast iron
120 Nominal impeller diameter [mm]
4.3 Name plate
TYPE
No.
Q
P2
KSB SAS
F-59320 Sequedin
Mat. No: 39023373
TEMP. MAX.
WARNUNG - NICHT UNTER SPANNUNG ÖFFNEN
WARNING - DO NOT OPEN WHEN ENERGIZED
AVERTISSEMENT - NE PAS OUVRIR SOUS TENSION
a) b)
°C kg
H
Motor IP 68 SUBM. MAX. 25 m CLASS F
3~
kW VHz cos φ
min-1
AIA/INS1
Amarex N S50 - 172 / 012 ULG-160
39100021
0.30 5.90 l/s 32 2 m
55 47
S1101
2011 2011
DKN 82.2-2U
1,9
2835 4,5 4,4
0,83
400 50
TYPE
No.
Q
P2
KSB SAS
F-59320 Sequedin
Mat. No: 39023372
TEMP. MAX.
WARNUNG - NICHT UNTER SPANNUNG ÖFFNEN
WARNING - DO NOT OPEN WHEN ENERGIZED
AVERTISSEMENT - NE PAS OUVRIR SOUS TENSION
°C kg
H
Motor IP 68 SUBM. MAX. 25 m CLASS F
3~ M.-No.
kW VHz cos φ
min-1
AIA/INS1
Amarex N S50 - 172 / 012 YLG-160
39100022
0.30 5.90 l/s 32 2 m
55 47
S1101
DKN 82.2-2U
1,9
2835 4,5 4,4
0,83
400 50
123456
II2G Ex dc IIB T4
0081 II2G Ex d IIB T4 Gb LCIE 03 ATEX 6428 X
2011
1
2
3
4
6
5
7
8
9
10
11
12
13
15
16
14
17
18
19
20 21
22
23
Fig.1: Name plate (example) a) Standard pump set b) Explosion-proof pump set
1 Designation 2 KSB order number
3 Flow rate 4 Maximum fluid and ambient temperature
5 Enclosure 6 Motor type
7 Rated power 8 Rated speed
9 Rated voltage 10 Rated current
11 Head 12 Series code
13 Total weight 14 Year of construction
15 Maximum submergence 16 Thermal class of winding insulation
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 ATEX marking for the pump set
23 Motor number
Key to the series code
S = series, 11 = year of construction 2011, 01 = week 1

4 Description of the Pump (Set)
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Amarex N
4.4 Design details
Design
▪Fully floodable submersible motor pump
▪Not self-priming
▪Close-coupled design
Drive
▪Three-phase asynchronous squirrel-cage motor
▪Motors integrated in explosion-proof pump sets are supplied in Ex d IIB type of
protection.
Shaft seal
▪Two bi-directional mechanical seals in tandem arrangement, with liquid reservoir
Impeller type
▪Various application-oriented impeller types
Bearings
Standard bearings:
▪Grease-packed bearings sealed for life
▪Maintenance-free
Reinforced bearings (optional, only for S impeller)
▪Amarex N S 50-172, motor versionYL/ motor size and number of poles 002, 012,
022
▪Amarex N S 50-222, motor versionYL/ motor size and number of poles 032, 042
Pump-end bearings:
▪Grease-packed bearings sealed for life

4 Description of the Pump (Set)
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4.5 Installation types
Table7: Overview of installation types
Installation type S - stationary wet installation
P7 P4
P5
P7
P4
P5
P2
P7
P5
Guide hoop
arrangement
Guide wire
arrangement
Single guide rail
arrangement
P2: installation parts
for guide hoop
arrangement
(Amarex N 50 and 65
only),
installation depth3) =
1.5m / 1.8m / 2.1m
P5: claw
P7: chain and
shackle,
length = 2 m
P4: installation parts
for guide wire
arrangement,
installation depth3) =
4.5m
P5: claw
P7: chain and
shackle,
length = 5 m
P4: installation parts
for single guide rail
arrangement,
P5: claw
P7: chain and shackle,
length = 5 m
Installation type P - transportable wet installation
P7
P4
P5
P7
P1
P6
Twin guide rail
arrangement
P4: installation parts
for twin guide rail
arrangement,
P5: claw and adapter
P7: chain and
shackle,
length = 5 m
P1: pump
P6: foot
P7: chain and
shackle,
length = 5 m
3) Installation depth from the lower edge of the access opening to the bottom of the pump sump.

4 Description of the Pump (Set)
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Amarex N
4.6 Configuration and function
1
2
3
4
8
9
10
7
6
5
1 Shaft 2 Bearing bracket
3 Discharge cover 4 Suction cover
5 Suction nozzle 6 Discharge nozzle
7 Impeller 8 Shaft seal
9 Bearing, pump end 10 Bearing, motor end
Design 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.
Function The fluid enters the pump axially via a suction nozzle (5) 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 (6), where it leaves the pump. At the rear side of the impeller,
the shaft (1) enters the casing via the discharge cover (4). The shaft passage through
the 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 (2)
linked with the pump casing and/or discharge cover.
Sealing 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:
Stationary wet-installed model (installation type S)
▪Pump set complete with power cables
▪Claw with sealing elements and fasteners
▪Lifting rope/lifting chain4)
▪Mounting bracket with fasteners
▪Duckfoot bend with mounting elements
▪Guiding accessories
(guide rails are not included in KSB's scope of supply)
4) Optional

4 Description of the Pump (Set)
18 of 72 Amarex N
Transportable wet-installed model (installation type P)
▪Foot plate or pump stool with fasteners
▪Lifting rope/lifting chain5)
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.
5) Optional

5 Installation at Site
19 of 72
Amarex N
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
Persons in the tank during pump operation
Electric shock!
▷Never start up the pump set when there are persons in the tank.
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 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!
▷Ensure the concrete's compressive strength is sufficient (in accordance with
C35/45 in exposure class XC1 to EN206-1).
▷The mounting surface must have set and must be completely horizontal and
even.
▷Observe the weights indicated.
Resonances Any resonances at the usual excitation frequencies (1 x and 2 x rotational frequency,
rotational noise) 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 Installation at Site
20 of 72 Amarex N
Place of installation for transportable models
WARNING
Incorrect positioning
Personal injury and damage to property!
▷Place the pump set down in a vertical position with the motor on top.
▷Use appropriate means to secure the pump set against tilting and tipping over.
▷Refer to the weights given in the data sheet/on the name plate.
Resonances Any resonances at the usual excitation frequencies (1 x and 2 x rotational frequency,
rotational noise) 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.
5.2.2 Checking the lubricant level
The lubricant reservoirs have been filled with an environmentally friendly, non-toxic
lubricant at the factory.
1. Position the pump set as shown.
a) b)
M = 40 mm
2563:109
2563:108
M = 40 mm
903
411
Fig.2: Checking the lubricant level a) Versions YL and WL; b) Versions YL and WL for
pump sizes 50-17... and 65-220
2. Unscrew and remove screw plug 903 with joint ring 411.
ðThe lubricant level must be 40 mm below the filler opening.
3. If the lubricant level is lower, top up the lubricant reservoir through the filler
opening until the indicated level is reached.
4. Screw in screw plug 903 with joint ring 411. Observe the tightening torques.
(ðSection7.6,Page52)
5.2.3 Checking the direction of rotation
DANGER
Pump set running dry
Explosion hazard!
▷Check the direction of rotation of explosion-proof pump sets outside the
potentially explosive atmosphere.