KSB Rotex Installation instructions

Grey Water and Condensate Pump
Rotex
Installation/Operating Manual

Legal information/Copyright
Installation/Operating Manual Rotex
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 2023-01-19

Contents
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Contents
Glossary .................................................................................................................................................. 5
1 General.................................................................................................................................................... 6
1.1 Principles ...........................................................................................................................................................6
1.2 Installation of partly completed machinery....................................................................................................6
1.3 Target group.....................................................................................................................................................6
1.4 Other applicable documents............................................................................................................................6
1.5 Symbols .............................................................................................................................................................7
1.6 Key to safety symbols/markings.......................................................................................................................7
2 Safety...................................................................................................................................................... 8
2.1 General..............................................................................................................................................................8
2.2 Intended use .....................................................................................................................................................8
2.2.1 Prevention of foreseeable misuse...................................................................................................... 8
2.3 Personnel qualification and training...............................................................................................................9
2.4 Consequences and risks caused by non-compliance with this manual .........................................................9
2.5 Safety awareness ..............................................................................................................................................9
2.6 Safety information for the operator/user.......................................................................................................9
2.7 Safety information for maintenance, inspection and installation ..............................................................10
2.8 Unauthorised modes of operation................................................................................................................10
3 Transport/Storage/Disposal ................................................................................................................ 11
3.1 Checking the condition upon delivery..........................................................................................................11
3.2 Transport.........................................................................................................................................................11
3.3 Storage/preservation......................................................................................................................................12
3.4 Return to supplier...........................................................................................................................................12
3.5 Disposal ...........................................................................................................................................................13
4 Description of the Pump (Set)............................................................................................................. 14
4.1 General description ........................................................................................................................................14
4.2 Product information as per Regulation No. 1907/2006(REACH).................................................................14
4.3 Designation.....................................................................................................................................................14
4.4 Name plate......................................................................................................................................................15
4.5 Design details..................................................................................................................................................15
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 Mounting the cover plate (optional, only available for Rotex70)..............................................................18
5.4 Installing the pump set ..................................................................................................................................19
5.5 Connecting the piping ...................................................................................................................................19
5.6 Permissible forces and moments at the pump nozzles ................................................................................20
5.7 Electrical system..............................................................................................................................................20
5.7.1 Electrical connection......................................................................................................................... 20
5.7.2 Motor protection .............................................................................................................................. 21
5.8 Fitting and setting the level control equipment ..........................................................................................22
5.8.1 Displacement weights (Rotex 10, 20)............................................................................................... 22
5.8.2 Float switch (Rotex 70) ..................................................................................................................... 23
5.9 Checking the direction of rotation................................................................................................................24
6 Commissioning/Start-up/Shutdown................................................................................................... 25
6.1 Commissioning/Start-up.................................................................................................................................25
6.1.1 Prerequisites for commissioning/start-up ........................................................................................ 25

Contents
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6.1.2 Start-up.............................................................................................................................................. 25
6.2 Operating Limits.............................................................................................................................................26
6.2.1 Fluid handled .................................................................................................................................... 26
6.2.2 Frequency of starts............................................................................................................................ 28
6.2.3 Operation on the power supply network........................................................................................ 28
6.3 Shutdown/storage/preservation ....................................................................................................................29
6.3.1 Measures to be taken for shutdown................................................................................................ 29
6.4 Returning to service .......................................................................................................................................29
7 Servicing/Maintenance........................................................................................................................ 30
7.1 Safety regulations...........................................................................................................................................30
7.2 Servicing/inspection........................................................................................................................................30
7.2.1 Supervision of operation .................................................................................................................. 30
7.2.2 Visual inspection ............................................................................................................................... 31
7.3 Drainage / cleaning ........................................................................................................................................32
7.4 Reassembling the pump set...........................................................................................................................32
7.4.1 General information/Safety regulations.......................................................................................... 32
7.4.2 Reassembling the pump section....................................................................................................... 33
7.5 Dismantling the pump set..............................................................................................................................33
7.5.1 General information/Safety regulations.......................................................................................... 33
7.5.2 Removing the pump set from the piping........................................................................................ 34
7.5.3 Dismantling the pump section ......................................................................................................... 34
7.6 Spare parts stock.............................................................................................................................................35
7.6.1 Ordering spare parts......................................................................................................................... 35
7.6.2 Recommended spare parts stock...................................................................................................... 35
8 Trouble-shooting.................................................................................................................................. 36
9 Related Documents.............................................................................................................................. 38
9.1 Exploded views with list of components.......................................................................................................38
9.1.1 Rotex 10, 20....................................................................................................................................... 38
9.1.2 Rotex 70............................................................................................................................................. 39
9.2 Wiring diagrams .............................................................................................................................................40
9.2.1 RotexD .............................................................................................................................................. 40
9.2.2 Rotex E............................................................................................................................................... 40
9.3 Dimensions......................................................................................................................................................42
9.3.1 Rotex10, 20, 70................................................................................................................................. 42
10 EU Declaration of Conformity............................................................................................................. 44
11 Certificate of Decontamination........................................................................................................... 45
Index ..................................................................................................................................................... 46

Glossary
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Glossary
Certificate of decontamination
A certificate of decontamination is enclosed by the
customer when returning the product to the
manufacturer to certify that the product has been
properly drained to eliminate any environmental
and health hazards arising from components in
contact with the fluid handled.
Discharge line
The pipeline which is connected to the discharge
nozzle
Pump
Machine without drive, additional components or
accessories
Pump set
Complete pump set consisting of pump, drive,
additional components and accessories
Waste water
Water consisting of a combination of water
discharged from households, industrial and other
businesses as well as surface water.

1 General
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1 General
1.1 Principles
This operating manual is valid for the type series and variants indicated on the front
cover.
The operating 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 facility 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2.3,Page9)
1.4 Other applicable documents
Table1: 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 dimensions and installation
dimensions for the pump (set), weights
Hydraulic characteristic curve Characteristic curves showing head,
NPSHrequired, efficiency and power input
General assembly drawing1) Sectional drawing of the pump
Sub-supplier product literature1) Operating manuals and other product literature
describing accessories and integrated machinery
components
Spare parts lists1) Description of spare parts
Piping layout1) Description of auxiliary piping
List of components1) Description of all pump components
For accessories and/or integrated machinery components, observe the relevant
manufacturer's product literature.
1If included in agreed scope of supply

1 General
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1.5 Symbols
Table2: 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
1.6 Key to safety symbols/markings
Table3: 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 Safety
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2 Safety
!DANGER
All the information contained in this section refers to hazardous situations.
In addition to the present general safety information the action-related safety
information given in the other sections must be observed.
2.1 General
▪This operating manual contains general installation, operating and maintenance
instructions that must be observed to ensure safe operation of the system and
prevent personal injury and damage to property.
▪Comply with all the safety instructions given in the individual sections of this
operating manual.
▪The operating manual must be read and understood by the responsible specialist
personnel/operators prior to installation and commissioning.
▪The contents of this operating manual must be available to the specialist
personnel at the site at all times.
▪Information and markings attached directly to the product must always be
complied with and 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.
2.2 Intended use
▪The pump (set) must only be operated in the fields of application and within the
use limits specified in the other applicable documents.
▪Only operate pumps/pump sets which are in perfect technical condition.
▪Do not operate the pump (set) in partially assembled condition.
▪Only use the pump to handle the fluids described in the data sheet or product
literature of the pump model or variant.
▪Never operate the pump without the fluid to be handled.
▪Observe the minimum flow rates indicated in the data sheet or product literature
(to prevent overheating, bearing damage, etc).
▪Observe the minimum flow rate and maximum flow rate 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 (to prevent
cavitation damage).
▪Consult the manufacturer about any use or mode of operation not described in
the data sheet or product literature.
2.2.1 Prevention of foreseeable misuse
▪Never exceed the permissible application and operating limits specified in the
data sheet or product literature regarding pressure, temperature, etc.
▪Never open the discharge-side shut-off elements further than permitted.
– The maximum flow rate specified in the technical product literature would
be exceeded.
– Risk of cavitation damage
▪Observe all safety information and instructions in this manual.

2 Safety
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2.3 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.
2.4 Consequences and risks caused by non-compliance with this manual
▪Non-compliance with these operating instructions will lead to forfeiture of
warranty cover and of any and all rights to claims for damages.
▪Non-compliance can, for example, have the following consequences:
– Hazards to persons due to electrical, thermal, mechanical and chemical
effects and explosions
– Failure of important product functions
– Failure of prescribed maintenance and servicing practices
– Hazard to the environment due to leakage of hazardous substances
2.5 Safety awareness
In addition to the safety information contained in this operating manual and the
intended use, the following safety regulations shall be complied with:
▪Accident prevention, health regulations and safety regulations
▪Explosion protection regulations
▪Safety regulations for handling hazardous substances
▪Applicable standards, directives and laws
2.6 Safety information for the operator/user
▪Fit protective equipment (e.g. contact guards) supplied by the operator for hot,
cold or moving parts, and check that the equipment functions properly.
▪Do not remove any protective equipment (e.g. 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 stopping 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 Safety
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2.7 Safety information for maintenance, inspection and installation
▪Modifications or alterations of the pump (set) are only permitted with the
manufacturer's prior consent.
▪Use only original spare parts or parts/components authorised by the
manufacturer. The use of other parts/components can invalidate any liability of
the manufacturer for resulting damage.
▪The operator ensures that maintenance, inspection and installation are
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.
▪Only perform work on the pump set when it has been disconnected from the
power supply (de-energised).
▪The pump (set) 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29)
▪Decontaminate pumps which handle fluids posing a health hazard.
▪As soon as the work has been completed, re-install and re-activate any safety-
relevant devices and protective devices. Before returning the product to service,
observe all instructions on commissioning. (ðSection6.1,Page25)
2.8 Unauthorised modes of operation
Never operate the pump (set) outside the limits stated in the data sheet and in this
operating manual.
The warranty relating to the operating reliability and safety of the pump (set)
supplied is only valid if the equipment is used in accordance with its intended use.
(ðSection2.2,Page8)

3 Transport/Storage/Disposal
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3 Transport/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 and the insurer about the damage in writing
immediately.
3.2 Transport
DANGER
The pump (set) could slip out of the suspension arrangement
Danger to life from falling parts!
▷Observe the information on weights, centre of gravity and fastening points.
▷Observe the applicable local accident prevention regulations.
▷Use suitable, approved lifting accessories.
To transport the pump/pump set suspend it from the lifting tackle as shown.
Fig.1: Transporting a Rotex pump set with a rope looped around the bottom of the
motor

3 Transport/Storage/Disposal
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3.3 Storage/preservation
CAUTION
Damage during storage due to humidity, dirt or vermin
Corrosion/contamination of pump (set)!
▷For outdoor storage cover the pump (set) and accessories with waterproof
material and protect against condensation.
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.
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken for pump (set) storage.
▪Store the pump (set) in a dry, protected room where the atmospheric humidity is
as constant as possible.
▪Rotate the shaft by hand once a month, e.g. via the motor fan.
If properly stored indoors, the pump set is protected for a maximum of 12 months.
New pumps/pump sets are supplied by our factory duly prepared for storage.
For storing a pump (set) which has already been operated, the shutdown measures
must be adhered to. (ðSection6.3.1,Page29)
3.4 Return to supplier
1. Drain the pump as per operating instructions.
2. Flush and clean the pump, particularly if it has been used for handling noxious,
explosive, hot or other hazardous fluids.
3. If the pump 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 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.
Indicate any safety measures and decontamination measures taken.
(ðSection11,Page45)
NOTE
If required, a blank certificate of decontamination can be downloaded from the
following web site: www.ksb.com/certificate_of_decontamination

3 Transport/Storage/Disposal
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3.5 Disposal
WARNING
Fluids handled, 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 fluid residues.
▷Wear safety clothing and a protective mask if required.
▷Observe all legal regulations on the disposal of fluids posing a health hazard.
1. Dismantle the pump (set).
Collect greases and other lubricants during dismantling.
2. Separate and sort the pump materials, e.g. by:
- Metals
- Plastics
- Electronic waste
- Greases and other lubricants
3. Dispose of materials in 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
▪Grey water and condensate pump
Pump for handling chemically neutral, slightly contaminated waste water.
▪Rotex 10, 20:
– For fluid temperatures ≤90°C
▪Rotex 70:
– For fluid temperatures ≤70°C
– Not suitable for pumping condensate!
4.2 Product information as per Regulation No. 1907/2006(REACH)
For information as per European chemicals regulation (EC) No. 1907/2006 (REACH)
see https://www.ksb.com/en-global/company/corporate-responsibility/reach.
4.3 Designation
Example: Rotex 10 / 100D
Table4: Designation key
Code Description
Rotex Type series
10 Size
10 ▪Heavy-duty design Rp11/4, Rp2
▪Two-channel impeller
▪Level control with displacement weight
20 ▪Heavy-duty design Rp2
▪Three-channel impeller
▪Level control with displacement weight
702) ▪Light-duty design Rp11/4, Rp2
▪Open radial impeller
▪Level control with float switch
100 Installation depth [cm]
100, 1703)
D Drive
D Three-phase motor
E Single-phase AC motor
2Rotex size 70 cannot be used for condensate.
3Rotex size 70 is only available up to an installation depth of 100cm.

4 Description of the Pump (Set)
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4.4 Name plate
Johann-Klein-Straße 9
Deutschland
67227 Frankenthal
KSB SE & Co. KGaA
1
2
4
3
6
5
Fig.2: Rotex name plate (example)
1 Type series, size 2 Flow rate (Qmin.-Qmax.)
3 Principles of construction and
testing
4 Year/week of construction
5 Head (Hmax. -Hmin. ) 6 Total weight
4.5 Design details
Design
▪Centrifugal pump
▪Single-stage
▪To EN 12050-2
▪Pump foot designed as inlet strainer
▪Discharge to the top, parallel to the pump shaft
▪Pump and motor rigidly connected via a support column
▪Ready to be plugged in
▪1.5m power cable
Installation
▪Vertical installation
Drive
▪Surface-cooled three-phase motor
▪Enclosure IP55
▪AC motor
▪IP54 enclosure
Impeller type
Rotex 10:
▪Two-channel impeller
▪Free passage= 13mm
Rotex 20:
▪Three-channel impeller
▪Free passage= 18 mm
Rotex 70:
▪Open radial impeller
▪Free passage= 10 mm
Bearings
▪Product-lubricated plain bearing
▪Grease-packed deep groove ball bearings sealed for life

4 Description of the Pump (Set)
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Automation
▪Level control
▪Pump started/ stopped automatically depending on the fluid level
Rotex 10, 20:
▪Displacement weight with cable pull float switch control
Rotex 70:
▪Float switch
4.6 Configuration and function
1
2
3
4
5
6
7
8
Fig.3: Rotex
1 Discharge pipe 2 Bearing bush
3 Volute casing 4 Motor
5 Radial ball bearing 6 Shaft
7 Float switch 8 Impeller
Design The vertical non-self-priming submerged pump in single-stage, single-entry design
features an axial fluid inlet and an axial fluid outlet.
The rotor is directly connected to the motor shaft and radially supported by a
product-lubricated bearing bush at the impeller end. At the motor end, the motor
shaft is supported by deep groove ball bearings greased for life. The required radial
bearings are lubricated internally by the fluid handled. The pump set can also be
installed with a cover plate.
Function The pump is started up / stopped automatically depending on the fluid level.
Rotex 10/20:
The pump is started up / stopped by a microswitch fitted inside the terminal box. The
microswitch is connected to the displacement weights. When the displacement
weights float up, the pump starts up. When the fluid level drops, the pump stops.
Rotex 70:
The pump is started up when the float switch reaches its required upper angular
position. When the fluid level drops and the float reaches its bottom angular
position, the pump stops.
The uniformly rotating impeller of the submerged pump transfers mechanical energy
to the fluid passing through.
The fluid enters the pump set vertically via the suction nozzle and is accelerated
outward by the rotating impeller. In the flow passage of the volute casing the kinetic
energy of the fluid handled is converted into pressure energy. The fluid leaves the

4 Description of the Pump (Set)
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pump set via the discharge nozzle. The clearance gap minimises the fluid flowing
back from the volute casing into the suction nozzle. On the rear side of the impeller,
the shaft enters the casing via the radial bearing with bearing bush.
Sealing The pump set is seal-less. The shaft is supported by a plain bearing. The gap between
the shaft and the plain bearing is designed as a clearance gap. A small amount of
leakage flows into the support column at the shaft passage and through the
overflow opening back into the tank.
4.7 Noise characteristics
Sound pressure level < 70 dB(A)
4.8 Scope of supply
Depending on the model, the following items are included in the scope of supply:
▪Pump
▪Drive
Accessories
▪Cover plate
▪Level control
▪Alarm switchgear
▪Other accessories on request
4.9 Dimensions and weights
Dimensions
Refer to the Dimensions section for information on the dimensions.
(ðSection9.3,Page42)
Weights
Table5: Weight [kg]
Rotex [kg]
10/100 D 25
10/100 E 26
10/170 D 34
10/170 E 35
20/100 D 26
20/170 E 35
70 D 16
70 E 17

5 Installation at Site
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5 Installation at Site
5.1 Safety regulations
DANGER
Unsuitable electrical installation
Danger to life!
▷Make sure the electrical installation meets the VDE100 installation rules
(sockets with earthing terminals).
▷Make sure the electric mains is equipped with a residual current device of
max.30mA.
▷Always have the electrical connections installed by a trained electrician.
▷Only use the plug and power cable supplied.
DANGER
Use in an outdoor area
Danger of death from electric shock!
▷Any extension cables must match the quality of the supplied power cable.
▷Never expose electrical connections to any moisture.
DANGER
Continuous pump operation in swimming pools, garden ponds or similar
Danger of death from electric shock!
▷Make sure that nobody is in the water while the pump is in operation.
▷Only use the pump for draining swimming pools, garden ponds, etc. (It is
impermissible to use this pump as a recirculation pump, for example.)
5.2 Checks to be carried out prior to installation
▪Check the structural requirements.
All structural work must have been prepared in accordance with the Dimensions
and weights section. (ðSection4.9,Page17)
▪Check the operating data of the pump set.
The data on the name plate of the pump must match the data on the purchase
order.
▪Check that pump shaft can be easily rotated by hand.
To do so, rotate the impeller at the suction opening of the pump casing.
▪The tanks should have vent lines with twice the nominal diameter of the inlet
lines. As a minimum, the nominal diameter of the vent lines must match that of
the inlet lines.
5.3 Mounting the cover plate (optional, only available for Rotex70)
1. Fix the angular frame into the wall of the pit near the edge.
2. Insert one half of the cover plate into the frame. Bolt it to the frame.
3. Place the pump with support column 712 into the central recess in the cover
plate.
ðThe float switch connection cable must point to the small opening.
4. Screw in the discharge pipe.
ðPrior to mounting the second half of the cover plate, install and connect the
pump set, fit and set the level switch and check the direction of rotation.

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5. Place the second half of the cover plate with the profile seal on the pump and
discharge pipe. Press it into the angular frame. Bolt it to the frame.
5.4 Installing the pump set
üThe second half of the cover plate has not been mounted yet.
(ðSection5.3,Page18)
üThe installed motor is protected against flooding.
üMotor and float switch are located outside the pit or tank.
üMotor and float switch are vented and protected against moisture.
1. Remove the transport plugs from the volute casing and the discharge pipe.
2. Place the pump set on the floor of the pit or tank.
3. Fasten the pump set to the pit/tank wall with pipe clamp 733 without
transmitting any stresses or strains.
5.5 Connecting the piping
DANGER
Impermissible loads acting on the pump nozzles
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 pipes in close proximity to the pump and connect them properly
without transmitting any stresses or strains.
▷Take appropriate measures to compensate for thermal expansion of the piping.
CAUTION
Incorrect earthing during welding work on the piping
Destruction of rolling element bearings (pitting effect)!
▷Never earth the electric welding equipment on the pump or soleplate.
▷Prevent current flowing through the rolling element bearings.
NOTE
Installing check and shut-off elements in the system is recommended, depending on
the type of plant and pump. However, such elements must not obstruct proper
drainage or hinder disassembly of the pump.
NOTE
If the pump is used for automatic drainage, fit a non-return or check valve.
üThe nominal diameters of the pipelines are equal to or greater than the nominal
diameters of the pump nozzles.
üAdapters to larger nominal diameters are designed with a diffuser angle of
approx. 8° to avoid excessive pressure losses.
üA flow velocity of 2-3m/s is recommended.
üThe pipelines have been anchored in close proximity to the pump and connected
without transmitting any stresses or strains.
1. Thoroughly clean, flush and blow through all vessels, pipelines and connections
(especially of new installations).
2. Before installing the pump in the piping, remove the flange covers on the
suction and discharge nozzles of the pump.

5 Installation at Site
20 of 48 Rotex
2322.8/04-EN
CAUTION
Welding beads, scale and other impurities in the piping
Damage to the pump!
▷Free the piping from any impurities.
3. If required, fit a suction strainer upstream of the pump nozzle.
4. Connect the discharge-side pump nozzle with the piping.
CAUTION
Aggressive flushing liquid and pickling agent
Damage to the pump!
▷Match the cleaning operation mode and duration of flushing and pickling to
the casing materials and seal materials used.
5.6 Permissible forces and moments at the pump nozzles
No piping-induced forces and moments (from warped pipelines or thermal
expansion, for example) must act on the pump.
5.7 Electrical system
5.7.1 Electrical connection
The available mains voltage must correspond to the voltage stated on the name
plate.
Table6: Fuses for the power cable [A]
Rotex Fuse size
[A]
10D, 20 D 6
10E, 20 E 10
70 D 4
70 E 6
The pump set is supplied complete with power cable and plug.
It simply needs to be plugged into a suitable socket.
DANGER
Electrical connection work by unqualified personnel
Danger of death from electric shock!
▷Always have the electrical connections installed by a trained and qualified
electrician.
▷Observe regulations IEC 60364 .
WARNING
Incorrect connection to the mains
Damage to the power supply network, short circuit!
▷Observe the technical specifications of the local energy supply companies.