KSB Amarex N S 32-160 User manual

Submersible Motor Pump
Amarex N S 32-160
Pump size DN 32
Motor size:
2-pole: 02
Non-ATEX
Installation/Operating
Manual

Legal information/Copyright
Installation/Operating Manual Amarex N S 32-160
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 24.06.2013

Contents
Glossary .................................................................................................5
1 General ..................................................................................................6
1.1 Principles ...........................................................................................................6
1.2 Installation of partly completed machinery .................................................... 6
1.3 Target group ..................................................................................................... 6
1.4 Other applicable documents ............................................................................ 6
1.5 Symbols .............................................................................................................6
2 Safety .....................................................................................................8
2.1 Key to safety symbols/markings ....................................................................... 8
2.2 General .............................................................................................................. 8
2.3 Intended use .....................................................................................................8
2.4 Personnel qualification and training ............................................................... 9
2.5 Consequences and risks caused by non-compliance with these operating
instructions ........................................................................................................ 9
2.6 Safety awareness ............................................................................................10
2.7 Safety information for the user/operator ..................................................... 10
2.8 Safety information for maintenance, inspection and installation work ..... 10
2.9 Unauthorised modes of operation ................................................................10
3 Transport/Temporary Storage/Disposal .............................................11
3.1 Checking the condition upon delivery .......................................................... 11
3.2 Transport ......................................................................................................... 11
3.3 Storage/Preservation ...................................................................................... 11
3.4 Return to supplier ........................................................................................... 12
3.5 Disposal ...........................................................................................................12
4 Description of the Pump (Set) ............................................................13
4.1 General description ........................................................................................ 13
4.2 Designation ..................................................................................................... 13
4.3 Name plate ...................................................................................................... 13
4.4 Design details .................................................................................................. 13
4.5 Installation types ............................................................................................14
4.6 Configuration and function ........................................................................... 15
4.7 Scope of supply ............................................................................................... 16
4.8 Dimensions and weights ................................................................................16
5 Installation at Site ...............................................................................17
5.1 Safety regulations ........................................................................................... 17
5.2 Checks to be carried out prior to installation ............................................... 17
5.3 Installing the pump set .................................................................................. 18
5.4 Electrical system .............................................................................................. 25
Contents
Amarex N S 32-160 3 of 52

6 Commissioning/Start-up/Shutdown ...................................................29
6.1 Commissioning/start-up ................................................................................. 29
6.2 Operating limits .............................................................................................. 30
6.3 Shutdown/storage/preservation .................................................................... 31
6.4 Returning to service .......................................................................................32
7 Servicing/Maintenance .......................................................................33
7.1 Safety regulations ........................................................................................... 33
7.2 Maintenance/inspection ................................................................................. 34
7.3 Drainage/cleaning ..........................................................................................37
7.4 Dismantling the pump set .............................................................................. 37
7.5 Reassembling the pump set ........................................................................... 39
7.6 Tightening torques ......................................................................................... 41
7.7 Spare parts stock ............................................................................................. 41
8 Trouble-shooting ................................................................................43
9 Related Documents ............................................................................44
9.1 General assembly drawing with list of components .................................... 44
9.2 Exploded view ................................................................................................. 45
9.3 Wiring diagram ............................................................................................... 46
9.4 Wiring diagrams overload protection ........................................................... 47
10 EC Declaration of Conformity ............................................................48
11 Certificate of Decontamination .........................................................49
Index ....................................................................................................50
Contents
4 of 52 Amarex N S 32-160

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.
Hydraulic system
The part of the pump in which the kinetic
energy is converted into pressure energy
Monobloc pump set
Motor housing and pump casing form a single
component.
Glossary
Amarex N S 32-160 5 of 52

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 tables below).
Table 1: Variants covered by this manual
Size Impeller type Material variant
G
32-160 S S
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
uniquely 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 manual is aimed at the target group of trained and qualified specialist technical
personnel.
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
Spare parts lists1) Description of spare parts
Supplementary operating
manuals1)
e.g. for installation parts for stationary wet
installation
For accessories and/or integrated machinery components observe the relevant
manufacturer's product literature.
1.5 Symbols
Table 3: Symbols used in this manual
Symbol Description
✓Conditions which need to be fulfilled before proceeding with the
step-by-step instructions
⊳Safety instructions
⇨Result of an action
⇨Cross-references
1) If agreed to be included in the scope of supply
1 General
6 of 52 Amarex N S 32-160

Symbol Description
1.
2.
Step-by-step instructions
Note
Recommendations and important information on how to handle
the product
1 General
Amarex N S 32-160 7 of 52

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.
General hazard
In conjunction with one of the signal words this symbol indicates a
hazard which will or could result in death or serious injury.
Electrical hazard
In conjunction with one of the signal words this symbol indicates a
hazard involving electrical voltage and identifies information about
protection against electrical voltage.
Machine damage
In conjunction with the signal word CAUTION this symbol indicates
a hazard for the machine and its functions.
2.2 General
This manual contains general installation, operating and maintenance instructions
that must be observed to ensure safe pump operation and prevent personal injury
and damage to property.
The safety information in all sections of this manual must be complied with.
This manual must be read and completely understood by the specialist personnel/
operators responsible prior to installation and commissioning.
The contents of this manual must be available to the specialist personnel at the site
at all times.
Information attached directly to the pump must always be complied with and be
kept in a perfectly legible condition at all times. This applies to, for example:
▪Arrow indicating the direction of rotation
▪Markings for connections
▪Name plate
The operator is responsible for ensuring compliance with all local regulations not
taken into account in this manual.
2.3 Intended use
The pump (set) must only be operated within the operating limits described in the
other applicable documents.
▪Only operate pump sets which are in perfect technical condition.
▪Do not operate partially assembled pump sets.
▪Only use the pump set to handle the fluids described in the data sheet or product
literature of the pump model.
▪Never operate the pump set without the fluid to be handled.
!DANGER
2 Safety
8 of 52 Amarex N S 32-160

▪Observe the limits for continuous operation specified in the data sheet or
product literature (Qmin2) and Qmax3)) (to prevent damage such as shaft fracture,
bearing failure, mechanical seal damage, etc).
▪When untreated waste water is handled the duty points in continuous operation
lie within 0.7 to 1.2 x Qopt4) to minimise the risk of clogging/hardening.
▪Avoid duty points for continuous operation at very low speeds and small flow
rates (<0.7 x Qopt4)).
▪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 pump set (to prevent
cavitation damage).
▪Consult the manufacturer about any use or mode of operation not described in
the data sheet or product literature.
▪The pump set must only be used for the following applications:
Impeller with cutter
(impeller type S)
Suitable for intermittent operation
handling the following fluids:
Domestic waste water
Raw water
Faeces
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 and in
the 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 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:
2) Minimum permissible flow rate
3) Maximum permissible flow rate
4) Best efficiency point
2 Safety
Amarex N S 32-160 9 of 52

– 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 user/operator
▪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. (⇨ Section 6.3 Page 31)
▪Decontaminate pumps which handle fluids posing a health hazard.
▪As soon as the work is 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 29)
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
10 of 52 Amarex N S 32-160

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 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 set!
▷Only remove caps/covers from the openings of the pump set at the time of
installation.
3 Transport/Temporary Storage/Disposal
Amarex N S 32-160 11 of 52

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. (⇨ Section 7.3 Page 37)
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 (set) leave residues which might lead to
corrosion when coming into contact with atmospheric humidity, or which might
ignite when coming into contact with oxygen, the pump set must be
neutralised, and anhydrous inert gas must be blown through the pump for
drying purposes.
4. Always complete and enclose a certificate of decontamination when returning
the pump (set).
Always indicate any 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
3.5 Disposal
WARNING
Fluids, consumables and supplies which are hot 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
12 of 52 Amarex N S 32-160

4 Description of the Pump (Set)
4.1 General description
Explosion-proof pump for handling domestic waste water, raw water and faeces in
intermittent operation.
4.2 Designation
Example: Amarex N S 32 - 160 / 02 ULG 160
Table 6: Key to the designation
Code Description
Amarex N Type series
S Impeller type
32 Nominal discharge nozzle diameter [mm]
160 Size of hydraulic system
0 Motor size
2 Number of poles
UL Motor version, UL = without explosion protection
G Casing material, G = grey cast iron
160 Nominal impeller diameter [mm]
4.3 Name plate
39190481
0.3 - 4.6 l/s
TEMP. MAX. 40 °C
1.5
2700
400
3.4 5.35
29
0.88
50 Hz
29 - 0.72 m
DKN 72.2-2U
Amarex N S 32-160/02 ULG - 160
Nicht unter Spannung öffnen.
Do not open while energised.
Ne pas ouvrir sous tension.
ACHTUNG
ATTENTION
WARNING Mat. No. 39023372
TYPE
No.
S1007
2013
Q
3~
Motor
P2 kW
1/min
V
A
IP 68 SUBM. MAX. 25 m
S1Ia/In
kg
H
M.-No.
cos φ
KSB SAS
F - 59320 SEQUEDIN
Class F
2
1
3
4
5
6
9
10
11
14
16
15
12
13
17
18
20
7
19
8
Fig. 1: Name plate (example)
1Designation 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 immersion depth 16 Thermal class of winding insulation
17 Power factor at design point 18 Rated frequency
19 Mode of operation 20 Starting current ratio
4.4 Design details
Design
▪Fully floodable submersible motor pump
▪Not self-priming
▪Close-coupled pump set
4 Description of the Pump (Set)
Amarex N S 32-160 13 of 52

Shaft seal
▪Pump end: one bi-directional mechanical seal with liquid reservoir
Drive end: one shaft seal ring
Impeller type
S impeller
Impeller with cutter
(impeller type S)
Suitable for the following fluids:
faeces, domestic sewage and waste water
containing long fibres
S impellers are suitable for handling the following fluids:
▪Domestic waste water
▪Grey water
▪Waste water with faeces
Standard bearings
▪Grease-lubricated bearings sealed for life
▪Maintenance-free
Drive
▪Three-phase asynchronous squirrel-cage motor
4.5 Installation types
Table 7: Overview of installation types
Installation type S - stationary wet installation
P1
P7
P5 P2
P1
P7
P5 P4
P1
P7
P5 P4
Guide hoop
arrangement
Guide wire
arrangement
Single guide rail
arrangement
P1: pump
P2: installation parts
for guide hoop
arrangement (ID5) =
1.5 m / 1.8 m / 2.1 m)
P5: claw
P7: chain and shackle
(length = 2 m)
P1: pump
P4: installation parts
for guide wire
arrangement
(ID5) = 4.5 m)
P5: claw
P7: chain and shackle
(length = 5 m)
P1: pump
P4: installation parts
for single guide rail
arrangement
P5: claw
P7: chain and shackle
(length = 5 m)
5) ID= installation depth from the lower edge of the access opening to the bottom of the pump sump
4 Description of the Pump (Set)
14 of 52 Amarex N S 32-160

Installation type P - transportable wet installation
P1
P7
P5
P4
P1
P6
P7
Twin guide rail
arrangement
P1: pump
P1: pump P6: feet
P4: installation parts
for twin guide rail
arrangement
P7: chain and shackle
(length = 5 m)
P5: claw and adapter
P7: chain and shackle
(length = 5 m)
4.6 Configuration and function
1
2
3
4
5
6
7
9
8
Fig. 2: Sectional drawing
1Shaft 2 Bearing bracket
3 Discharge nozzle 4 Suction cover
5 Suction nozzle 6 Impeller
7 Shaft seal 8 Rolling element bearing, pump
end
9 Rolling element 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.
Design
4 Description of the Pump (Set)
Amarex N S 32-160 15 of 52

The fluid enters the pump axially via the suction nozzle (5) and is accelerated
outward in a cylindrical flow by the rotating impeller (6). 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 (3), where it leaves the pump. At the rear
side of the impeller, the shaft (1) enters the hydraulic system via a discharge cover.
The shaft passage through the cover is sealed towards the atmosphere with a shaft
seal (7). The shaft runs in rolling element bearings (8 and 9), which are supported by
a bearing bracket (2) connected to the pump casing and/or discharge cover.
The pump is sealed by a bi-directional mechanical seal at the pump end and a shaft
seal ring at the motor end.
A lubricant reservoir between the shaft seal ring and the mechanical seal provides
cooling and lubrication.
4.7 Scope of supply
Depending on the model, the following items are included in the scope of supply:
Stationary wet installation (installation type S)
▪Pump set complete with power cables
▪Claw with sealing and mounting elements
▪Lifting rope or chain
▪Mounting bracket with mounting elements
▪Duckfoot bend with mounting elements
▪Guiding equipment
(guide rails are not included in KSB's scope of supply)
Transportable wet-installed model (installation type P)
▪Pump set complete with power cables
▪3 feet, or 3 feet and a pump stool, with fastening 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.
Function
Sealing
4 Description of the Pump (Set)
16 of 52 Amarex N S 32-160

5 Installation at Site
5.1 Safety regulations
DANGER
Persons in the tank during pump operation
Electric shock!
▷Never start up the pump set when there are persons in the tank.
WARNING
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.
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.
Place of installation for transportable models
WARNING
Incorrect positioning
Personal injury and damage to property!
▷Set the pump set down in a vertical position with the motor on top.
▷Use appropriate means to secure the pump set against overturning and tipping
over.
▷Refer to the weights given in the data sheet/on the name plate.
Any resonances at the usual excitation frequencies (1 x and 2 x rotational frequency,
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.
Resonances
Resonances
5 Installation at Site
Amarex N S 32-160 17 of 52

5.2.2 Checking the direction of rotation
WARNING
Hands or objects inside the pump casing
Risk of injuries, damage to the pump!
▷Never put your hands or any other objects into the pump.
▷Make sure that there is no foreign matter inside the pump.
▷Do not hold the pump while checking the direction of rotation.
✓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. (The
direction of rotation is marked by an arrow on the pump casing.)
Fig. 3: Checking the direction of rotation
3. If the impeller is running in the wrong direction of rotation, check the electrical
connection of the pump in the control system.
4. Disconnect the pump set from the power supply and make sure it cannot be
switched on unintentionally.
5.3 Installing the pump set
Always observe the general arrangement drawing/outline drawing when installing
the pump set.
5.3.1 Stationary wet installation
5.3.1.1 Fastening the duckfoot bend
Depending on the pump size, the duckfoot bend is either fastened with chemical
anchors and/or foundation rails.
5 Installation at Site
18 of 52 Amarex N S 32-160

Fastening the duckfoot bend with chemical anchors
1. Position duckfoot bend 72-1 on the floor of the tank/sump.
2. Insert chemical anchors 90-3.38.
3. Bolt duckfoot bend 72-1 to the floor with chemical anchors 90-3.38.
Table 8: Chemical anchor dimensions
Size do
[mm]
t=hreq
[mm]
tfix
[mm]
WAF
[mm]
M
[mm]
Hex.
head
WAF
[mm]
Torqueassy
[Nm]
M 10x130 12 90 20 17 10 7 20
Table 9: Curing times of mortar cartridge
Floor temperature Curing time
[min]
-5 °C to 0 °C 240
0 °C to +10 °C 45
+10 °C to +20 °C 20
> +20 °C 10
5.3.1.2 Connecting the piping
DANGER
Impermissible loads acting on the flange of the duckfoot bend
Danger to life from leakage of hot, toxic, corrosive or flammable fluids!
▷Do not use the pump as an anchorage point for the piping.
▷Anchor the pipelines in close proximity to the pump and connect them without
transmitting any stresses or strains.
▷Observe the permissible flange loads.
▷Take appropriate measures to compensate thermal expansion of the piping.
NOTE
When the pump set is used for draining low-level building areas, install a swing
check valve in the discharge line to avoid backflow from the sewer system.
CAUTION
Critical speed
Increased vibrations!
Damage to mechanical seals and bearings!
▷Install a swing check valve in longer riser pipes to prevent the pump from
excessive running in reverse.
When fitting a swing check valve, make sure that the unit can still be vented
properly.
Fig. 4: Fastening the
duckfoot bend
t = hreq tfix
WAF
M
Hex. head WAF
do
l
Fig. 5: Dimensions
5 Installation at Site
Amarex N S 32-160 19 of 52

Table 10: Permissible flange loads
Nominal flange
diameter
Forces [N] Moments [Nm]
FyFzFx∑F MyMzMx∑M
50 1350 1650 1500 2600 1000 1150 1400 2050
5.3.1.3 Fitting the guide wire arrangement
The pump set is guided into the sump or tank along two parallel, tightly stretched
guide wires made of stainless steel. It attaches itself automatically to the duckfoot
bend which has been fitted to the floor.
NOTE
Should site conditions/piping layout, etc. require the wire to run off the vertical, do
not exceed a maximum angle of 5° to ensure reliable fitting and guiding of the
pump set.
Fitting the mounting bracket
1. Fasten mounting bracket 894 to the edge of the tank/sump opening with steel
anchor bolts 90-3.37 and tighten the anchor bolts to a tightening torque of 10
Nm.
2. Push clamping pieces 571 through the holes of suspension bracket 572 and
fasten with nuts 920.37.
3. Fasten threaded bolt 904 with the pre-assembled clamping arrangement to the
mounting bracket with nut 920.36.
Do not tighten nut 920.36 too much in order to allow sufficient play for
subsequently tensioning the guide wire.
Fx
Fz
Fy
MyMz
Mx
Fig. 6: Permissible flange
loads
Fig. 7: Fitting the
mounting bracket
5 Installation at Site
20 of 52 Amarex N S 32-160