Grundfos PS.G Series User manual

Pumping station systems
PS.G
Pumping station, glass-fibre-reinforced plastic (GRP)
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
pumping station systems PS.G.
Sections 1-7 give the information necessary to be able to handle,
install and start using the product in a safe way.
Sections 8-10 give important information about the product, as
well as information on maintenance, service and disposal of the
product.
CONTENTS
Page
1. General information
1.1 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:
1.2 Notes
The symbols and notes below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
1. General information 2
1.1 Hazard statements 2
1.2 Notes 2
2. Safety instructions 3
3. Receiving the product 5
3.1 Transporting the product 5
3.2 Inspecting the product 5
4. Installing the product 6
4.1 Preparing the foundation 6
4.2 Installing the pit 7
4.3 Installing the valve chamber 9
4.4 Connecting the pipes 9
4.5 Installing the cover 10
4.6 Connecting the vent pipe 11
4.7 Installing a retrofitted inlet 11
5. Installing the pump(s) 12
6. Installing the level switches 12
6.1 Start and stop levels 13
6.2 Installing the pump controller 13
7. Electrical connection 13
7.1 Installing the cables 13
8. Product introduction 14
8.1 Product description 14
8.2 Service platform 15
8.3 Applications 15
8.4 Pumped liquids 15
8.5 Pumping station system (PS.S) 15
8.6 Pumping station modular (PS.M) 15
8.7 Identification 16
9. Maintaining and servicing the product 18
9.1 Repairing a non-return valve and a pressure system 19
9.2 Draining the main pipe 20
9.3 Contaminated pumps 20
9.4 Service contract 20
10. Disposing of the product 20
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.
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.

English (GB)
3
2. Safety instructions
Receiving the product
Installing the product
Installing the pit
Backfill
Installing the pump(s)
Installing the level switches
Electrical connection
DANGER
Crushing hazard
Death or serious personal injury
- Place the pit on even ground to prevent the pit in
overturning.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure the lifting bracket or strap is tightened
before attempting to lift the pit. Tighten if
necessary. Carelessness during lifting or
transportation may cause injury to persons or
damage to the pit.
CAUTION
Collapsing hazard
Minor or moderate personal injury
- Support for the crane must be placed at a suitable
distance from the pit to avoid collapse of pit hole.
Work according to local regulations.
DANGER
Crushing hazard
Death or serious personal injury
- Do not stand under or close to a suspended load.
DANGER
Crushing hazard
Death or serious personal injury
- Before lifting the pit, make sure that the lifting
equipment is capable of lifting the load.
- Make sure that the lifting bracket is tightened
before attempting to lift the pit. Tighten if
necessary. Carelessness during lifting or
transportation may cause injury to persons or
damage to the pit.
WARNING
Collapsing hazard
Death or serious personal injury
- Make sure the specified size of gravel is used for
the backfill.
DANGER
Crushing hazard
Death or serious personal injury
- Do not stand under or close to a suspended load.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure the lifting equipment is rated for the
weight of the pump and is approved and
maintained according to local regulations.
CAUTION
Electric shock
Minor or moderate personal injury
- Make sure the float switches are connected
properly and that the cables are not bent or
sharply pinched.
WARNING
Electric shock
Death or serious personal injury
- The pump or pump controller must be connected
to an external emergency stop.
If the main switch is used as emergency stop, it
must fulfil EN 60204-1, 10.8.4.
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply has been switched off
and that it cannot be accidentally switched on.

English (GB)
4
Maintaining and servicing the product Repairing a non-return valve and a pipe system
Contaminated pumps
WARNING
Toxic material
Death or serious personal injury
- Before entering the pit, make sure that the pit is
ventilated according to local regulations. If not, do
not enter the pit.
DANGER
Falling hazard
Death or serious personal injury
- When entering the pit, wear a safety harness and
use approved equipment for lifting persons up from
the pit according to local regulations.
WARNING
Crushing and suffocation hazard
Death or serious personal injury
- Before entering the pit, make sure that the cover
and safety grid are locked in open position and
that the pit is ventilated according to local
regulations. If not, do not enter the pit.
WARNING
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply has been switched off
and that it cannot be accidentally switched on.
DANGER
Falling hazard
Death or serious personal injury
- When entering the pit, wear a safety harness and
use approved equipment for lifting persons up from
the pit according to local regulations.
CAUTION
Pressurised system
Minor or moderate personal injury
- Relieve the pressure by draining the system before
dismantling the pressure system.
CAUTION
Biological hazard
Minor or moderate personal injury
- Remove the fuses or switch off the main switch
before dismantling the pressure system. Make
sure that the power supply cannot be accidentally
switched on.
CAUTION
Biological hazard
Minor or moderate personal injury
- Rinse the pressure system thoroughly with clean
water before carrying out maintenance and
service.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the pump thoroughly with clean water and
rinse the pump parts in water after dismantling.

English (GB)
5
3. Receiving the product
3.1 Transporting the product
The pit must be transported in a horizontal position and anchored
to the transport vehicle. Accessories, if any, must be secured
inside the pit.
The customer must provide appropriate lifting equipment at the
place of unloading. The weight of the pit is stated on the
nameplate.
Precautions during transport and handling
• Do not dump the pit from the lorry.
• Use approved straps of textile or similar materials when lifting
the pit on to or down from a lorry or moving it on the
construction site.
• Handle and lift the pit according to local regulations.
• Do not drag the pit over the ground.
• Point loads must not occur.
• The pit must not be exposed to sharp edges.
• Fix the pit securely during transport.
• When the pit is placed on the ground, make sure the ground is
even.
Fig. 1 Lifting the pit from a lorry
Fig. 2 Lifting straps
3.2 Inspecting the product
After transportation and before installation, the pumping station
must be inspected by the customer.
The inspection must include the following:
• Check the pumping station for transport damage. Contact the
transporter immediately if you detect any damage.
• Check that the products delivered correspond to the order.
• Check the positions and sizes of fittings.
• Retighten various connections, as they may have become
loose during the transport.
• Check that all valves, except the draining valve in the valve
chamber, are open.
• Check other equipment such as vent pipes.
When transporting and handling the pit at low
temperatures, take into consideration that the pit
impact resistance is reduced.
Before raising the pit into vertical position, remove
transport supports and accessories from the inside of
the pit.
DANGER
Crushing hazard
Death or serious personal injury
- Place the pit on even ground to prevent the pit in
overturning.
If the pit is equipped with a lifting point, use it during
handling.
TM06 1232 1914
TM06 1233 1914
DANGER
Crushing hazard
Death or serious personal injury
- Make sure the lifting bracket or strap is tightened
before attempting to lift the pit. Tighten if
necessary. Carelessness during lifting or
transportation may cause injury to persons or
damage to the pit.

English (GB)
6
4. Installing the product
4.1 Preparing the foundation
With reference to DS/EN 1997-1: Eurocode 7: Geotechnical
Category 2:
We recommend that you complete a geotechnical investigation of
the site conditions before you install the pit.
With reference to DS/EN 1997-1: Eurocode 7: Geotechnical
Category 1:
The geotechnical investigation can be judged to be unnecessary,
if the conditions below are fulfilled:
• There is a negligible risk of overall instability, ground
movements or adverse ground conditions.
• Comparable local experience shows that the ground
conditions are sufficiently uncomplicated.
• There is no excavation below the water table.
• Comparable local experience indicates that the proposed
excavation below the water table will be uncomplicated.
In case of doubt, consult a geotechnical specialist.
Fig. 3 Schematic installation drawing
4.1.1 Foundation layer
• The pit must be placed on a foundation layer if soil analyses
and information about the pit load indicate that the bottom is
not capable of bearing the weight.
• The foundation layer can be made after the excavation by
laying a stable layer of suitable gravel or similar material and
compacting it in layers of maximum 50 cm. Such a foundation
layer is also required if the excavation has become too deep
by mistake.
4.1.2 Foundation slab
The concrete for the foundation slab must meet these
requirements:
Fig. 4 Lowering the foundation slab
CAUTION
Collapsing hazard
Minor or moderate personal injury
- Support for the crane must be placed at a suitable
distance from the pit to avoid collapse of pit hole.
Work according to local regulations.
Installation of pits must be carried out by an
authorised person in accordance with local
regulations.
Work in or near wastewater pits must be carried out
according to local regulations.
TM06 1848 3214
Pos. Description
1 Foundation layer
2 Foundation slab
3 Backfill, compacted in layers of maximum 50 cm
4Distance of 50 cm from cover where heavy loads must
not occur
Select the location of the pit so that its installation
does not damage other equipment. And the other
equipment must not damage the buried pit.
44
3
2
1
Strength class C40/50-2
Exposure class XC4
Water-to-cement ratio ≤0.45
Maximum chloride content 0.4 %
Reinforcement B500B
Maximum angle of inclination 25 °
Maximum water absorption by mass 6 %
TM06 1237 2514

English (GB)
7
Fig. 5 Maximum angle of inclination
The anchor bolts for the foundation slab can be delivered on site
before the pit arrives. It is thus possible to install the anchor bolts
and perform a tensile test before the pumping station arrives at
the installation site.
4.2 Installing the pit
1. Clean the surface of the foundation slab, making sure there is
no material or any objects between the foundation slab and
the mounting flange of the pit.
2. Lift the pit by the lifting lugs and place it in the middle of the
circle of anchoring bolts on the foundation slab.
Fig. 6 Lowering the pit
TM06 3498 0615
Make sure that the foundation slab is level before
installing the pit.
If the pumping station is installed in corrosive soil
condition/environment, this may cause the
galvanized anchor bolts to corrode. In that case,
choose other bolt material.
For further clarifications, please contact your local
Grundfos sales office.
Each anchor bolt must be able to withstand 20 kN
(2000 kg) in a tensile test.
If the foundation slab is cast on site, rub down the
surface of the slab to a smooth surface.
If the foundation slab is to be cast on site, see the
data booklet 98697625 for casting dimensions. The
document is available in Grundfos Product Center.
TM06 3859 1015
Max. 25 °
net.grundfos.com/qr/i/98697625
Use either the QR code or the web address below to
access the data booklet.
Check the pit for external damage before lowering it
into position. When the pit has been installed,
Grundfos cannot be held responsible for possible
damage.
Place the support for the crane at a suitable distance
from the pit to avoid collapse of pit hole.
Work according to local regulations.
DANGER
Crushing hazard
Death or serious personal injury
- Do not stand under or close to a suspended load.
DANGER
Crushing hazard
Death or serious personal injury
- Before lifting the pit, make sure that the lifting
equipment is capable of lifting the load.
- Make sure that the lifting bracket is tightened
before attempting to lift the pit. Tighten if
necessary. Carelessness during lifting or
transportation may cause injury to persons or
damage to the pit.
Before lowering the pit into position, retighten various
connections, as they may have become loose during
the transport.
TM06 1238 1914

English (GB)
8
3. Position the pit correctly so that the flanges are in the right
direction in relation to the inlet and outlet pipes.
Fig. 7 How to fill the hollow space with concrete
Fig. 8 Securing the mounting brackets
4. Fit the mounting brackets, washers and M20 F8.8 nuts, and
tighten the nuts to 430 ± 10 Nm.
4.2.1 Backfill
• The backfill must provide sufficient support of the pit on all
sides and ensure that the load can be transferred without
detrimental point impacts or similar impacts.
• The backfill material must be compactable gravel or sand with
an even particle size. The maximum particle size is 32 mm.
The backfill material must not contain any stones larger than
the maximum particle size.
• The backfilling must be carried out so that the pit is not
damaged or deformed.
• The backfill must be compacted in layers of maximum 50 cm.
Fig. 9 Compacted layers of maximum 50 cm
In pits with diameters of 2.0, 2.2 or 3.0 m, with outlet
pipes above DN 150 and with two holes in the bottom
of the pit, fill the hollow space below the bottom of
the pit with concrete to avoid vibrations. See fig. 7.
TM06 4359 2115TM06 1239 1914
Do not lower the pit onto the anchoring bolts as they
may damage the surface of the pit.
Make sure that no residual stresses remain in the
reinforced plastic structures of the pit bottom.
430 ± 10 Nm
WARNING
Collapsing hazard
Death or serious personal injury
- Make sure the specified size of gravel is used for
the backfill.
TM07 1249 1218
Do not use plate compactors at a distance of less
than 30 cm from the pit wall.
TM06 3352 5214
50 cm
2 ≤∅≤32 mm
Max. 50 cm

English (GB)
9
Fig. 10 Insufficient compaction under pipes
Fig. 11 Even pressure on all sides of the pit
Fig. 12 Compactors
4.3 Installing the valve chamber
When installing the valve chamber, follow the same instructions
as for the installation of the pit. See section 4. Installing the
product.
Fig. 13 Valve chamber
4.4 Connecting the pipes
Compact the backfill around the pit up to the lower part of a pipe
connection, before connecting the pipe. See fig. 13.
Before connecting the pipes, check the following:
• The pipes and the gaskets must be clean.
• The inlet pipe must be properly aligned with the pipe
connection.
Compact the backfill under the inlet and outlet pipes
properly so that they are not exposed to downward
loads when the backfill settles. See fig. 10.
TM06 1879 3314
During backfilling, the cover must be fitted on the pit
to ensure that the pit is not deformed (becomes
oval).
TM06 3603 0615TM06 3602 0615
Use mechanical compacting equipment and compact
the backfill to > 95 % proctor density.
2
1
Max.
25 kN
Max.
150 kg
1a
TM06 3288 1015
Place inlet and outlet pipe connections in accordance
with local regulations.
Isolating
valves
Non-return
valves

English (GB)
10
4.5 Installing the cover
Fig. 14 Not approved for pedestrians and vehicles
As standard, covers are made of fibre glass and hatches of
aluminium. Standard covers are pre-installed.
From PS.G.30 and up, the pumping station has both a
maintenance hatch and a service hatch.
For more information, see the data booklet 98697625. The
document is available in www.grundfos.com, Grundfos Product
Center.
4.5.1 Installing a cover approved for traffic
The covers are available for all pit sizes as an optional cover. The
cover is a concrete slab with a steel hatch.
Fig. 15 Maximum angle of inclination
Installing a cover with a concrete ring
Be careful when compacting the backfill to prevent damage to the
top of the pit. The particle size under the cover and close to the
pit top must be 2 to 20 mm.
Lower the concrete ring onto the compacted backfill. The ring
may be covered with asphalt.
Fig. 16 Installing a cover with a concrete ring
Covers are not approved for pedestrians and
vehicles unless this is specifically stated.
TM06 0113 4913 - TM06 0114 4913
The safety grid is split when the pit diameter is
greater than 2 m.
The pit must be locked to prevent unwanted access.
The maximum angle of inclination when lifting the
cover is 25 °.
TM06 3498 0615
The foundation and bedding layer for the cover must
be able to carry the load that the concrete cover is
rated for. Observe local regulations.
25 °
The pit comes with a 500 mm collar that must be cut
to the right length on the installation site.
The pit must not support the ring.
TM06 3921 1215
350-250 mm
Particle size:
2-20 mm
Compacted backfill
Asphalt (optional)
500 mm
Thickness of ring:
150-250 mm

English (GB)
11
Installing a cover with air space
Lower the cover onto the pumping station when the backfill has
been compacted to the top level of the pumping station. See figs
17 and 18.
After installation, there must be an air space of 150 mm between
the cover and the pit. See figs 17 and 18.
Fig. 17 Cover approved for traffic, sectional view
Fig. 18 Cover approved for traffic
4.6 Connecting the vent pipe
We recommend that you provide the pit with a vent pipe
(accessory). See section 4.4 Connecting the pipes.
Fig. 19 Pit with top-mounted vent pipe
Fig. 20 Pit with side-mounted vent pipe
4.7 Installing a retrofitted inlet
A retrofitted inlet must be installed according to Grundfos
instructions. The inlet must always be above the start level of the
pump to prevent sedimentation in the inlet pipe.
Observe the following rules when installing the inlet:
• If more than one inlet is installed, the minimum distance
between the inlets must be 200 mm.
• If the pit includes a service platform, the inlet must be installed
below it.
• The inlet location must be as remote as possible from the
pump inlets.
• Flow velocity at the inlet must not exceed 1.2 m/s to avoid the
formation of eddies in the pit. See fig. 21.
• The inlet fall height must always be minimised and it must not
exceed 1 m with the water level down.
TM06 3575 0615
TM06 1847 3214
If the concrete ring is to be cast on site, see the data
booklet 98697625 for casting dimensions. The
document is available in www.grundfos.com,
Grundfos Product Center.
TM06 3859 1015
Ground level Concrete ring Cover
Air space: 150 mm
Pit
Compacted
backfill
Top level of the pit
net.grundfos.com/qr/i/98697625
Use either the QR code or the web address below to
access the data booklet.
TM06 1683 2614TM06 1684 2614

English (GB)
12
If the inlet is located too high relative to the liquid level or with a
high flow velocity, it may cause entrainment of air and the
formation of eddies in the liquid when entering into the pit. Air
entrained in the liquid tend to remain inside the pump impeller,
where the centrifugal force makes it accumulate around the
impeller hub. This may lead to increased power requirements and
lowered performance and efficiency. The risk of cavitation and
pump vibrations also increases. If the amount of air in the pump is
very high, the pump may stop operating.
Fig. 21 Avoided location of retrofitted inlet
5. Installing the pump(s)
For installation and startup of the pump(s), see the installation
and operating instructions for the pump.
6. Installing the level switches
See the installation and operating instructions for the level control
system.
When installing the level switches, observe the following points:
• To prevent air intake and vibrations in the pump, the stop level
switch must be fitted in such a way that the pump is stopped
before air is sucked into the pump.
• In the case of one-pump operation, the start level switch must
be installed in such a way that the pump is started at the
required level; however, the pump must always be started
before the liquid level reaches the lower edge of the bottom
inlet pipe.
• In the case of multipump operation, the start level switches
must be installed in such a way that pumps are started before
the liquid level reaches the lower edge of the bottom inlet pipe.
• The high-level alarm switch must always be installed about
100 mm above the start level switch; however, the alarm must
always be given before the liquid level reaches the inlet pipe.
For further settings, see the installation and operating instructions
for the level switch selected.
TM07 1248 1218
DANGER
Crushing hazard
Death or serious personal injury
- Do not stand under or close to a suspended load.
Use only certified, CE marked lifting chains.
Lower the pump carefully into the pit in order to avoid
damage to the pump and the pit.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure the lifting equipment is rated for the
weight of the pump and is approved and
maintained according to local regulations.
Chains supplied by Grundfos are marked with
maximum load and production date.
Do not exceed the maximum load.
Maintain the chain according to local regulations. We
recommend that you check chains and shackles
supplied by Grundfos at least once a year for cracks,
corrosion or other irregularities. If you find any
defects, replace the chain or shackles.
CAUTION
Electric shock
Minor or moderate personal injury
- Make sure the float switches are connected
properly and that the cables are not bent or
sharply pinched.
If the pit is equipped with an AUTOADAPT -controlled
pump, an external level controller is not needed.

English (GB)
13
6.1 Start and stop levels
The effective volume of the pit must be so large that the number
of starts does not exceed the maximum permissible number. See
the installation and operating instructions for the pump.
6.2 Installing the pump controller
See the installation and operating instructions for the control
system.
6.2.1 Float switches
If float switches have been selected, they can be fitted on a tube
which can be lifted out of the pit. This ensures easy adjustment of
the float switches.
Fig. 22 Adjusting the float switches
6.2.2 Pressure transducer
If a pressure transducer is used, install it in a protective pipe in
order to prevent contamination and deposits.
6.2.3 Other types of level control equipment
See the installation and operating instructions for the equipment.
7. Electrical connection
See the installation and operating instructions for the pump and
the control system.
7.1 Installing the cables
Lead the cables for the level switches and the pump into the pit
through a cable entry in the side of the pit.
Fig. 23 Cable entry
Note that the bottom float switch (the stop switch)
must stop the pump before the liquid level in the pit
falls below the minimum level of the pump. See the
installation and operating instructions for the pump.
TM02 8960 1204
A Minimum 300 mm
B 50 to 100 mm
C Operating range 110 mm
Distance B must not be too big as otherwise the float
switch may get stuck in other parts of the installation.
A
BC
The electrical connection must be carried out by an
authorised person in accordance with local
regulations.
WARNING
Electric shock
Death or serious personal injury
- The pump or pump controller must be connected
to an external emergency stop.
If the main switch is used as emergency stop, it
must fulfil EN 60204-1, 10.8.4.
DANGER
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply has been switched off
and that it cannot be accidentally switched on.
Do not install Grundfos control boxes and the free
end of the supply cable inside the pumping station.
When installing or removing the pump, make sure
not to pinch or damage the cables.
Adjust the length of the power cable by coiling it up
on a relief fitting to ensure that the cable are not
damaged during operation. Fasten the relief fitting to
a suitable hook at the top of the pit.
Make sure that the cable is not sharply bent or
pinched.
When the pump and cables have been installed,
suspend the cables in such a way that any stress is
relieved from the cables.
TM03 3709 5014
If corrosive gasses are present, we recommend that
you use a gas-tight cable entry.

English (GB)
14
8. Product introduction
8.1 Product description
Grundfos pumping stations are prefabricated pumping stations for
collection and pumping of wastewater. The pumping stations
come as complete, assembled units ready for installation. The
pumps are lowered into the pit when the pit has been installed.
The pit is made of glass-fibre-reinforced plastic (GRP) and comes
with inlet and outlet pipes fitted.
The pit is available with a separate valve chamber enabling the
operator to get access to valves without having to enter the pump
pit.
Wastewater is led into the pit. When the liquid in the pit reaches
the maximum liquid level, the pump will start and pump the liquid
further on into the sewer system.
Fig. 24 Example of pumping station
Fig. 25 Valve chamber
TM06 3382 0115
Pos. Component Material
1
Cover Glass-fibre-reinforced plastic
(GRP)
Cover approved
for traffic Concrete ring and cast-iron hatch
2 Hatch Aluminium
3 Vent pipe Stainless steel
4 Handrail Stainless steel
5 Safety grid Galvanised steel
6 Ladder Aluminium
7 Outlet Stainless steel
8 Pipes Stainless steel
Polyethylene
9 Service platform Aluminium
10 Inlet Stainless steel
Polyethylene
11 Screen basket Stainless steel
Baffle plate Stainless steel
12 Chain Stainless steel
Galvanised steel
13 Pump -
14 Auto coupling Epoxy-coated cast iron
15 Level switch -
16 Pit bottom Glass-fibre-reinforced plastic
(GRP)
4
5
6
12
11
12
7
8
9
14
15
16 13
3
10
TM06 3288 1015
Pos. Component Material
1 Valve chamber Glass-fibre-reinforced plastic
2 Cover Glass-fibre-reinforced plastic
3 Hatch Aluminium
4 Isolating valve Epoxy-coated cast iron
5 Non-return valve Epoxy-coated cast iron
6 Ladder Aluminium
7 Pipes Stainless steel
8 Drain pipe Stainless steel
9 Drain valve Plastic
1
2
3
4
5
7
6
9
8

English (GB)
15
8.2 Service platform
The service platform is for one person only and is to be used
when operating the isolating valves inside the pit.
Fig. 26 Fixed service platform
Fig. 27 Liftable service platform
8.3 Applications
Grundfos pumping stations are used for collection and pumping
of drainage water, grey wastewater and sewage. The pump type
depends on the pumped liquid.
8.4 Pumped liquids
8.4.1 Liquid temperature
Maximum 40 °C. For higher temperatures, contact Grundfos.
8.4.2 Acids and alkalis
If not specified for other pH values, the pumping station is
normally capable of withstanding pH values between 5.5 and 8. In
case of doubt, contact Grundfos.
8.4.3 Density
Maximum 1100 kg/m3.
8.5 Pumping station system (PS.S)
Sections 8.5.1 CE approval of PS.S and 8.7 Identification apply
to pumping station systems consisting of Grundfos-approved
components mentioned on the nameplate of PS.S.
The pumping station system contains all the elements making the
pumping station function as one unit, and can contain the
following five elements:
•pit
•pump
• pump controller
• level controller
• accessories.
The pumping station system may not always have all five
elements. However, it will always have a pit and a pump, but the
pump controller or the level controller may be incorporated in the
pump, and/or accessories may be omitted.
8.5.1 CE approval of PS.S
PS.S is CE-approved in accordance with these directives and
standards:
• EN 2006/42/EC, EU Machinery Directive
• EN/ISO 12100, Safety of machinery - General principles for
design - Risk assessment and risk reduction.
In order to ensure safe transport and to fulfil customer requests,
the PS.S elements can be assembled on site. But the CE
approval of PS.S is only valid if the following conditions have
been fulfilled:
• PS.S has been assembled correctly in accordance with the
installation and operating instructions for PS.S and the pit,
pump and control systems.
• PS.S contains the Grundfos specified elements stated on the
PS.S nameplate. The PS.S nameplate is fitted inside the pit.
8.6 Pumping station modular (PS.M)
PS.M is used instead of PS.S when the CE approval for the
complete system is not needed or some of the components in the
pumping station, e.g. the controllers, are not supplied by
Grundfos.
A risk assessment for the complete system must be performed by
the customer, if necessary.
Do not operate the isolating valve in the pit or valve
chamber from the ground level.
Do not place pumps temporarily on the service
platform.
TM06 1687 2614TM06 1737 2714
Select the pump on the basis of knowledge of the
liquid temperature. See the installation and operating
instructions for the individual pumps.

English (GB)
16
8.7 Identification
8.7.1 Nameplate, PS.S
Fig. 28 Nameplate, PS.S
8.7.2 Nameplate, PS.M
Fig. 29 Nameplate, PS.M
8.7.3 Type key, PS.S
Example: PS.S.R.17.25.SEG.LCD110.FS2
* Without CE approval.
TM06 1743 2714TM06 7590 3616
Pos. Description
1 Product number
2 Production site
3 Type designation
4 Country of origin
5 Weight
6 Production code, year and week
7Installation and operating instructions, publication
number
8 Product number, pit
9 Product number, pump
10 Product number, pump controller
11 Product number, level controller
12 Product number(s), accessories
13 Not filled in
12
3
4
9
10
11
12
5
67
81313
DK-8850 Bjerringbro, Denmark
99153401
Model
Type PS.M.R.17.25.SEG.LCD.10.FS2
Pumping Station Modular
Made in Weight
P.c.
Well cpl. Pump cpl.
Control System
Accessories
Level System
12
5
7
9
13
11
8
6
34
10
12
Code Explanation Designation
PS Grundfos pumping station
S CE-marked system
System type
M Modular system*
R Rotation-moulded PE
W Welded PE or PP
04 400 mm
Pit sump diameter
[mm] x 100
05 500 mm
06 600 mm
08 800 mm
10 1000 mm
12 1200 mm
17 1700 mm
20 2000 mm
25 2500 mm Pit depth [mm] x 100
CC Unilift CC
Pump type
KP Unilift KP
AP12 Unilift AP12.50
AP35 Unilift AP35, Unilift AP12.40
AP50 Unilift AP50
APB Unilift AP35B, Unilift AP50B
SEG SEG
DP/EF DP (0.6 - 1.5 kW), EF
DP/SL DP (2.6 kW), SL1.50.65 and
SLV.65.65
DPK DPK, DPK.V
SE/SL SE/SL
X No Grundfos controller
Pump controller
BIP Built into the pump
CU Control unit
LC107
Level controller
LC108
LC110
LC115
LCD107
Level controller - two pumps
LCD108
LCD110
LCD115
DC318 Dedicated controls
DC319
DCD318 Dedicated controls - two
pumps
DCD319
BIP Built into the pump
Level controller
AB2 Two air bells
AB3 Three air bells
FS2 Two float switches
FS3 Three float switches
FS4 Four float switches
EL3 Three electrodes
EL4 Four electrodes
EL5 Five electrodes
PT Pressure transducer
PF1 Pressure transducer and one
float switch
PF2 Pressure transducer and two
float switches

English (GB)
17
8.7.4 Nameplate, PS.G
Fig. 30 Nameplate
8.7.5 Type key, PS.G
Example: PS.G.18.40.D.GC.SS100.A100.SE/SL
TM06 3836 1015
Pos. Description
1 Product number
2 Production site
3 Type designation
4 Country of origin
5 Weight
6 Production code, year and week
7Installation and operating instructions, publication
number
8 Not filled in
Type
Standards used: EN 12050-1 or EN 12050-2
Model
Weight
P.c.
Made in
EU declaration of performance
P10
1325
Notified body:0197
DK-8850 Bjerringbro, Denmark
98844650
132
7
485
6
Code Explanation Designation
PS Grundfos pumping station
G Glass-fibre-reinforced plastic System type
18 1800 mm Pit sump diameter
[mm] x 100
40 4000 mm Pit depth [mm] x 100
S One pump
Number of pumpsDTwopumps
T Three pumps
DC Direct outlet, common
Pipe designGC Goose neck, common
VC Valve chamber
Stainless steel:
Pipe material and
diameter
SS50 DN 50 (2")
SS65 DN 65 (2 1/2")
SS80 DN 80 (3")
SS100 DN 100 (4")
SS150 DN 150 (6")
SS200 DN 200 (8")
Polyethylene:
PE63 D63 mm (2")
PE75 D75 mm (2 1/2")
PE90 D90 mm (3")
PE110 D110 mm (4")
PE160 D160 mm (6")
Auto coupling:
Installation type
A50 DN 50 pump connection
A65 DN 65 pump connection
A80 DN 80 pump connection
A100 DN 100 pump connection
A150 DN 150 pump connection
A200 DN 200 pump connection
SEG SEG
Pump type
DP/EF DP (0.6 - 1.5 kW)/EF
DP/SL DP (2.6 kW)/SL1.50.65,
SLV.65.65
SE/SL SE/SL
S S-pump

English (GB)
18
9. Maintaining and servicing the product
See the installation and operating instructions for the pump and
the control system.
Fig. 31 Opening the pit
We advise you to make all maintenance and service
work when the pump is placed outside the pit.
WARNING
Toxic material
Death or serious personal injury
- Before entering the pit, make sure that the pit is
ventilated according to local regulations. If not, do
not enter the pit.
DANGER
Falling hazard
Death or serious personal injury
- When entering the pit, wear a safety harness and
use approved equipment for lifting persons up from
the pit according to local regulations.
WARNING
Crushing and suffocation hazard
Death or serious personal injury
- Before entering the pit, make sure that the cover
and safety grid are locked in open position and
that the pit is ventilated according to local
regulations. If not, do not enter the pit.
WARNING
Electric shock
Death or serious personal injury
- Before starting any work on the product, make
sure that the power supply has been switched off
and that it cannot be accidentally switched on.
TM06 1670 2614
90°
12
34
90°
Check the ladder supplied by Grundfos, the service
platform and the fastening of these at least once per
year for cracks, corrosion or other irregularities.
Observe local regulations.
DANGER
Falling hazard
Death or serious personal injury
- When entering the pit, wear a safety harness and
use approved equipment for lifting persons up from
the pit according to local regulations.
All work in pits must be carried out according to local
regulations and supervised by at least one person
outside the pumping station.
When work is going on in or in the proximity of an
open pumping station or valve chamber, place proper
warning signs and correct safety barriers around the
pit in order to avoid that persons fall into the pit. The
warning signs must be visible from all directions.
If the top opening is up to ∅1000, normal precautions
are sufficient. Openings larger than ∅1000 must be
equipped with safety barriers or other safety
measures.
Pumps can be lifted by means of a crane, using the
lifting points.
Use proper slings or chains approved for lifting.
CAUTION
Biological hazard
Minor or moderate personal injury
- Use gloves and other suitable personal protection
equipment in accordance with local regulations.
Observe local regulations on exposure to
wastewater.
If natural light is insufficient, the maintenance staff
must use lamps.

English (GB)
19
Fig. 32 Lifting a pump on auto coupling for service
9.1 Repairing a non-return valve and a pressure
system
1. Open the valve chamber drain valve by means of the valve
handle in the pit in order to empty the sump of the valve
chamber. See fig. 33.
Fig. 33 Draining the valve chamber
TM06 1671 2614
1
2
CAUTION
Pressurised system
Minor or moderate personal injury
- Relieve the pressure by draining the system before
dismantling the pressure system.
CAUTION
Biological hazard
Minor or moderate personal injury
- Remove the fuses or switch off the main switch
before dismantling the pressure system. Make
sure that the power supply cannot be accidentally
switched on.
CAUTION
Biological hazard
Minor or moderate personal injury
- Rinse the pressure system thoroughly with clean
water before carrying out maintenance and
service.
Make sure that the isolating valves cannot be
accidentally opened.
When entering the valve chamber, do not step on
pipes or valves.
TM06 3288 1015
Valve handle
Drain valve
Drain pipe
Isolating valve
Non-return valve

English (GB)
20
2. Close the isolating valves. See fig. 33.
3. Loosen and remove the two screws on the non-return valve
cover. See fig. 34.
Fig. 34 Non-return valve
4. Replace worn-out valve balls and clean valves inside.
5. Close the valve cover and tighten the screws.
6. Open the isolating valves. See fig. 33.
7. Close the drain valve inside the pit. See fig. 33.
9.2 Draining the main pipe
1. Open the valve chamber drain valve by means of the valve
handle in the pit in order to empty the sump of the valve
chamber. See fig. 33.
2. Close the isolating valves. See fig. 33.
3. Loosen and remove the two screws on the non-return valve
cover. See fig. 34.
4. Remove the valve ball, replace the valve cover and tighten the
screws.
5. Open the isolating valves and drain the main pipe. See fig. 33.
6. Repeat steps 2 and 3.
7. Fit the valve ball in the non-return valve. Fit the cover and
tighten the screws.
8. Open the isolating valves.
9.3 Contaminated pumps
For further information, see the installation and operating
instructions for the pump(s).
9.4 Service contract
It is possible to make a service contract with Grundfos.
10. Disposing of the product
This product or parts of it must be disposed of in an
environmentally sound way:
1. Use the public or private waste collection service.
2. If this is not possible, contact the nearest Grundfos company
or service workshop.
3. If it is not possible to dispose of the product as a complete
unit, the pump installation can be removed from the pit, and
the pit can be filled and covered.
See also end-of-life information on www.grundfos.com/product-
recycling.
TM06 1756 2714
Use a vacuum tanker if the pump pit cannot contain
the volume of the pressure pipe.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the pump thoroughly with clean water and
rinse the pump parts in water after dismantling.
Non-return valve Exploded view