Grundfos S 50 Series User manual

S pumps, ranges 50-70
Installation and operating instructions
GRUNDFOS INSTRUCTIONS

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions describe Grundfos S
wastewater pumps, ranges 50-70.
Sections 1-5 give the information necessary to be able to unpack,
install and start up the product in a safe way.
Sections 6-11 give important information about the product, as
well as information on service, fault finding and disposal of the
product.
CONTENTS
Page
1. General information
1.1 Target groups
These installation and operating instructions are intended for
professional installers.
1.2 Hazard statements
The symbols and hazard statements below may appear in
Grundfos installation and operating instructions, safety
instructions and service instructions.
The hazard statements are structured in the following way:
1. General information 2
1.1 Target groups 2
1.2 Hazard statements 2
1.3 Notes 3
2. Receiving the product 3
3. Installing the product 3
3.1 Mechanical installation 3
3.2 Electrical connection 11
3.3 Frequency converter operation 13
4. Starting up the product 13
4.1 Preparations for starting up 14
4.2 Checking the direction of rotation 15
4.3 Startup 16
5. Handling and storing the product 16
5.1 Handling the product 16
5.2 Storing the product 16
6. Product introduction 17
6.1 Product description 17
6.2 Applications 17
6.3 Pumped liquids 17
6.4 Potentially explosive environments 18
6.5 Identification 19
6.6 Installation types 21
7. Protection and control functions 23
7.1 Motor protection devices 23
7.2 Pump controller 23
7.3 IO 113 23
7.4 SM 113, optional 24
7.5 Switches and sensors 24
8. Servicing and maintaining the product 26
8.1 Safety instructions and requirements 26
8.2 Maintenance schedule 26
8.3 Oil check and oil change 27
8.4 Inspection and adjustment of impeller clearance 28
8.5 Pump cleaning and visual inspection 29
8.6 Motor cables 30
8.7 Spare parts 30
8.8 Contaminated pumps and service 30
9. Fault finding the product 31
10. Technical data 33
10.1 Operating conditions 33
10.2 Electrical data 34
10.3 Dimensions and weights 34
11. Disposing of the product 36
Read this document before installing the product.
Installation and operation must comply with local
regulations and accepted codes of good practice.
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
SIGNAL WORD
Description of hazard
Consequence of ignoring the warning.
- Action to avoid the hazard.

English (GB)
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1.3 Notes
The symbols and notes below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
2. Receiving the product
S pumps are supplied from factory either in horizontal or vertical
position. Range 50 is supplied on a wooden pallet and in a
cardboard box. Ranges 54-70 are supplied on a wooden pallet
and in a crate.
Fig. 1 Transportation methods
Dispose of pallets and other packaging material according to local
waste disposal regulations.
3. Installing the product
S pumps are designed for various installation types. See section
6.6 Installation types.
For safety reasons, all work in pits must be supervised by a
person outside the pump pit.
Pits for submersible sewage and wastewater pumps contain
sewage and wastewater with toxic and/or disease-causing
substances. Therefore, all persons involved must wear
appropriate personal protective equipment and clothing and all
work on and near the pump must be carried out under strict
observance of the hygiene regulations in force.
The rated capacity of the lifting equipment is stated on the
equipment nameplate. The weight of the pump is stated on the
pump nameplate.
3.1 Mechanical installation
Observe these instructions for explosion-proof
products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with
a black graphical symbol, indicates that an action
must not be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.
TM06 6068 0716 - TM06 6073 0716
We recommend that you keep the
cable end protectors in storage
for later use.
S pumps, range S pumps, ranges 54-
70
Pump installation in pits must be
carried out by specially trained
persons.
Work in or near pits must be
carried out according to local
regulations.
DANGER
Electric shock
Death or serious personal injury
- It must be possible to lock the
mains switch in position 0.
Type and requirements as
specified in EN 60204-1.
Persons must not enter the
installation area when the
atmosphere is explosive.
DANGER
Overhead load
Death or serious personal injury
- Never work under a pump
when it is hanging from a
crane.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure the rated capacity of
the lifting equipment, incl. the
lifting chain, is adequate for the
lifting work.
CAUTION
Hot surface
Minor or moderate personal injury
- Do not touch the pump or
cables during operation
because the surface
temperature may exceed 70
°C.
DANGER
Electric shock
Death or serious personal injury
- Before beginning the
installation, switch off the
power supply and lock the main
power switch in position 0.
- Before working on the pump,
switch off any external voltage
connected to the pump.

English (GB)
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Fix the extra nameplate supplied with the pump at the installation
site.
Observe all safety regulations at the installation site, for instance
the use of blowers for fresh-air supply to the pit.
Prior to installation, check the oil level in the oil chamber. See
section 8.3 Oil check and oil change.
3.1.1 Lifting the pump
S pumps weigh up to 2375 kg without accessories.
It is therefore very important to use the right lifting equipment.
The pump weight is stated on the pump nameplate.
See sections 6.5.2 Nameplate and 10.3 Dimensions and weights.
Lifting the pump by the power supply cables may result in electric
short circuit and risk of electric shock when the pump is
connected to the mains. The cables and cable entries may be
damaged, leading to loss of watertightness and consequent
severe damage to the motor.
If the pump is tilted more than 10 ° in any direction from its normal
position (EN 809, 5.2.1.4), the pump may lose its stability.
DANGER
Crushing hazard
Death or serious personal injury
- During installation, always
support the pump by means of
lifting chains or place it in
horizontal position to secure
stability.
CAUTION
Crushing of hands
Minor or moderate personal injury
- Do not put your hands or any
tool into the pump inlet or outlet
port after the pump has been
connected to the power supply,
unless the main power switch
has been locked in the 0-
position.
- Make sure that the power
supply cannot be accidentally
switched on.
We recommend that you always
use Grundfos accessories to
ensure correct functioning.
If the installation has to be tested
at a pressure higher than 1.3
times maximum pump head,
isolate the pump from the
installation before the test to
avoid damage to the pump.
We recommend that you always
use CE marked lifting equipment.
DANGER
Crushing hazard
Death or serious personal injury
- Always check the lifting bracket
and chain for corrosion or wear
before lifting.
- Always lift the pump by its
lifting bracket or by means of a
fork-lift truck.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure the centre of gravity
is between the fork-lift arms
when lifting the pump.
The approximate centre of
gravity is marked with a label
attached to the transportation
stand.
DANGER
Electric shock
Death or serious personal injury
- Never lift the pump by the
power supply cables.

English (GB)
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Lifting points (top)
Use the right lifting point to keep the pump balanced. S pumps
are equipped with a lifting bracket with lifting points ensuring that
the pump can be lifted in a safe manner. See fig. 2and table
below for the correct lifting points.
Fig. 2 Lifting points for installation types S, C and D*
* The design of the lifting bracket may be different from the one
in the drawing. It does not affect the handling of the product,
however.
TM04 7173 1710
Range 50 and Range 58, 62, 66 and
Front
Middle
Nose
Front
Middle
Outlet flange
size
Pump range
50 54 58 62 66 70
DN 80 Middle Middle - - - -
DN 100 Middle Middle - - - -
DN 125 Middle Middle Middle Middle - -
DN 200 Front Front Front Middle Middle Middle
DN 250 - Front - - Middle Middle
DN 300 - - Front Middle Middle Middle
DN500 ----NoseFront
DN600 ----NoseFront
Always lift installation type ST
pumps in the middle lifting point
to make sure the pump is in
balance.

English (GB)
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Lifting points (bottom)
S pumps, ranges 66-70, are equipped with a lifting bracket on the
motor top cover and with a lifting bracket on the lower bearing
bracket. See fig. 3.
Fig. 3 Lifting points for ranges 66-70
S pumps, ranges 50 and 62, are equipped only with a lifting
bracket on the motor top cover. Use the pump outlet as the lower
lifting point. In this case, lift by means of a lifting strap or a lifting
chain secured below the pump outlet. See fig. 4.
Fig. 4 Lifting points for installation type H, ranges 50-62
3.1.2 Raising the pump to upright position
Carelessness during lifting or transportation may cause injury to
persons or damage the pump.
Fig. 5 Raising the pump to upright position, step 1
Fig. 6 Raising the pump to upright position, step 2
TM06 5922 0316TM06 5923 0316
Lifting points
Lifting by means of a strap
DANGER
Crushing hazard
Death or serious personal injury
- Make sure the lifting bracket or
strap is tightened before
attempting to lift the pump.
Tighten if necessary.
DANGER
Crushing hazard
Death or serious personal injury
- Do not stand under or next to
the pump when raising it to
upright position in order to
avoid being crushed in case
the pump overturns.
- Make sure the pump is raised
gently into upright position to
avoid the lifting chain slipping
off the crane when the pump is
not in balance.
TM03 3034 0208TM03 3035 0208

English (GB)
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Fig. 7 Raising the pump to upright position, step 3
3.1.3 Lowering the pump onto auto coupling
The pump can easily be pulled out of and lowered into the pit by
means of the guide rails. The stop level is lower for installation
type C than for installation type S. See fig. 24.
Fig. 8 Upper guide rail bracket
Fig. 9 Intermediate guide rail bracket; guide rails longer than
6 m require intermediate guide rail brackets
Correct plinth height for installation on auto coupling is important
in order to obtain the best efficiency for the pump.
Fig. 10 Auto-coupling base unit installation on a plinth
The minimum required plinth heights (A) for installation on auto
coupling appear from the following table.
TM03 3036 0208TM03 3066 0206TM03 3068 0206
TM03 2018 0208
Pump type Minimum plinth height
(A) [mm]
Range 50
S1.80.100.xxx 50
S1.80.200.xxx 200 / 0*
S1.100.100.xxx 50
S1.100.125.xxx 0
SV.80.80.xxx 0 / 50*
Range 54
S1.80.100.xxx 50
S1.100.125.xxx 0
S1.100.200.xxx 100 / 0*
S2.100.200.xxx 100 / 0*
S2.100.250.xxx 150 / 0*
SV.80.80.xxx** 0 / 50*
SV.80.80.xxx*** 50 / 100*

English (GB)
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* Dimensions = material code Q and G / R and S.
** Installation type S.
*** Installation type C.
Fig. 11 Lowering the pump onto an auto coupling
Range 58
S1.(x)xx.xxx.xxx 0
S2.xxx.xxx.xxx 150
SV.xx.xxx.xxx 0
Range 62
S1.(x)xx.xxx.xxx 0
S2.100.200.400 150
S2.100.200.500 200
S2.100.300.xxx 150
S2.145.xxx.xxx 150
S3.xxx.xxx.xxx 100
Range 66
S1.xxx.xxx.xxx 150
S2.xxx.xxx.xxx 150
S3.110.xxx.xxx 200
S3.120.300.xxx 400
S3.120.600.xxx 250
Range 70
S1.xxx.xxx.xxx 150
S2.90.xxx.xxx 100
S2.100.xxx.xxx 150
S2.110.xxx.xxx 150
S2.120.250.500/
600/800/1000 150
S2.120.250.1300/
1600 200
S3.110.500.500 200
S3.110.500.650/
800/1000/1300 250
S3.120.300.500 400
S3.120.300.650 350
S3.120.300.800/
1000 400
S3.120.300.1300 450
S3.120.600.500/
650 250
S3.120.600.1000/
1300 300
Pump type Minimum plinth height
(A) [mm]
TM03 3067 0208
Required tilt
angle when
the pump is
lowered onto
the auto
coupling: 5 ° ±

English (GB)
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3.1.4 Submerged installation on auto coupling
Pumps for permanent installation can be installed on a stationary
auto coupling and operated completely or partially submerged in
the pumped liquid.
Before installing the auto-coupling base unit, ensure the quality
and strength of the concrete foundation. See the pull-out
strengths required for anchor bolts in the table at the end of this
section. To ensure adequate pull-out strength, we recommend
that you weld the threaded bushings to the steel reinforcement in
the concrete.
1. Drill mounting holes for the guide rail bracket on the inside of
the pit and fasten the guide rail bracket provisionally with two
anchor screws.
2. Place the auto-coupling base unit on the bottom of the pit.
Use a plumb line to establish the correct positioning. Fasten
the auto coupling with anchor bolts. If the bottom of the pit is
uneven, support the auto-coupling base unit so that it is level
when being fastened.
3. Connect the outlet pipe in accordance with the generally
accepted procedures and without exposing the pipe to
distortion or tension. Do not allow loads from the weight of the
pipes to be carried by the auto coupling.
4. Fit the guide rails. An intermediate guide rail bracket is
required if guide rails are more than 6 m long. Place the guide
rails on the auto coupling, then place the guide rail bracket on
the guide rails and fasten the guide rail bracket to the pit wall.
Tighten the anchor bolts.
5. Clean out debris from the pit before lowering the pump into
the pit.
6. Before lowering the pump into wet pit, check the cables
visually for cuts or ruptures which may have been caused by
rough handling during transportation or installation.
7. Slide the guide claw of the pump between the guide rails and
lower the pump into the pit by means of a certified chain
secured to the lifting bracket of the pump. When the pump
reaches the auto-coupling base unit, the pump will
automatically connect tightly.
8. Hang up the end of the chain on a suitable hook at the top of
the pit and in such a way that the chain cannot come into
contact with the pump.
9. Adjust the length of the motor cables, but remember to have
enough cable length to be able to make service on the pump.
Make sure that the cables are not sharply bent or pinched. Fix
the cables at the top of the pit in such a way that no extra
cable slides into the pit.
10. Connect the motor cables and the sensor cable.
Pull-out strengths for anchor bolts
* Pump outlet DN 125 and base plate outlet DN 150.
3.1.5 Submerged installation, portable
1. Fit the ring stand to the pump inlet flange.
2. Fit a 90 ° elbow to the pump outlet port and connect the outlet
pipe or hose.
If a hose is used, make sure that the hose does not buckle
and that the inside diameter matches that of the outlet port.
3. Lower the pump into the liquid by means of a chain secured to
the lifting bracket of the pump. We recommend that you place
the pump on a plane, solid foundation. Make sure that the
pump is hanging from the chain and not the cables.
4. Hang up the end of the chain on a suitable hook at the top of
the pit and in such a way that the chain cannot come into
contact with the pump.
5. Adjust the length of the motor cables by coiling them up on a
relief fitting to ensure that the cables are not damaged during
operation. Fasten the relief fitting to a suitable hook. Make
sure that the cables are not sharply bent or pinched.
6. Connect the motor cables and the control cable, if any.
For auto-coupling installations,
types S and C, including DN 250
and upwards, the guide claw is
mounted on the outlet flange from
factory.
Avoid pipe tension at flanges and
bolts.
The free end of the cables must
not be submerged, as water may
penetrate through the cables into
the motor.
Auto-
coupling
base unit
Bolts Pull-out strength
[kN]
DN 100 4 x M16 5
DN 125/150* 8
DN 200
4 x M24
16
DN 250 30
DN 300 40
DN 500 6 x M30 40
DN 600 40
The pull-out strengths are stated
without safety factor. The
required safety factor may
depend on the materials and the
methods used for anchoring.

English (GB)
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3.1.6 Dry installation
Install pumps in dry installation permanently in a pump room.
The pump motor is enclosed and watertight and will not be
damaged if the installation site is flooded with water.
1. Mark and drill mounting holes in the concrete foundation.
2. Fit the base plate or base stand on the concrete with anchor
bolts. Check the pull-out strengths required for bolts at the
end of this section.
3. Check that the base plate or base stand is horizontal or
vertical.
4. Fasten the pump to the base plate or base stand.
In order to facilitate service on the pump, we recommend that you
fit isolating valves on either side of the pump.
5. Fit the inlet and outlet pipes and isolating valves, if used, and
ensure that the pump is not stressed by the pipes.
6. Adjust the length of the motor cables by coiling them up on a
relief fitting to ensure that the cables are not damaged during
operation, but remember to have enough cable length to be
able to service the pump. Fasten the relief fitting to a suitable
hook. Make sure that the cables are not sharply bent or
pinched.
7. Connect the motor cables and the control cable, if any.
The inlet and outlet pipes are bolted to the pump by means of
flange connections.
Foundation
To ensure minimum vibration levels, all parts of the system must
be sufficiently stiff and firmly anchored:
• The foundation and concrete must be of adequate strength to
support the weight of the pump including accessories, the
weight of the liquid passing through the pump and the forces
generated by the pump.
• As a rule of thumb, the mass of the concrete foundation must
be minimum three to five times the mass of the supported
equipment and must have sufficient rigidity to withstand the
axial, transverse and torsional loads generated by these
machines.
• The foundation must be 15 cm wider than the base plate for
pumps up to 350 kW and 25 cm wider for larger pumps.
• The concrete used in the foundation must have a minimum
tensile strength of 250 N/cm2 .
• Always use epoxy grout to fasten the pump base plate to the
foundation.
Pull-out strengths for anchor bolts
Installation type H
Installation type D
* Base plate inlet DN 500 and pump inlet DN 400.
For vertical, dry installations, type
D, install the pump on a
permanent concrete foundation.
For horizontal, dry installations,
type H, the pump is mounted on a
base stand from factory.
We recommend that you use a
reducer between the inlet pipe
and the pump in horizontal
installations. In horizontal
installation the reducer must be of
the eccentric type and must be
installed so that the straight edge
is pointing upwards. In this way,
the accumulation of air in the inlet
pipe is avoided and the risk of
disturbance of operation is
eliminated.
Make sure that the pipes are
installed without the use of undue
force. Do not allow loads from the
weight of the pipes to be carried
by the pump. We recommend that
you use loose flanges to ease the
installation and to avoid pipe
tension at flanges and bolts.
Do not use elastic elements or
bellows in the pipes; never use
these elements as a means to
align the pipes.
Range Bolts Pull-out strength
[kN]
50-62 4 x M16 10
66-70 6 x M24 25
Dry
installation Bolts Pull-out
strength [kN]
DN 100 3 x M20 18
DN 150 6 x M20 18
DN 200 18
DN 250
6 x M24
25
DN 300 25
DN 500/400* 25
DN 500 25
The pull-out strengths stated are
without safety factor. The
required safety factor may
depend on the materials and the
methods used for anchoring.