Grundfos SLV.65 User manual

SL1.50 and SLV.65 AUTOADAPT
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
Installation and operating instructions
SL1.50/SLV.65 AUTOADAPT
http://net.grundfos.com/qr/i/97525812

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions
describe Grundfos SL1 and SLV AUTOADAPT pumps.
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 3
1.1 Hazard statements 3
1.2 Notes 3
1.3 Target groups 3
2. Receiving the product 3
2.1 Transporting the product 3
3. Installing the product 4
3.1 Mechanical installation 4
3.2 Electrical connection 7
4. Starting up the product 9
4.1 Operating modes 10
4.2 Preparations for starting up 10
4.3 Start and stop levels 11
4.4 Direction of rotation 12
4.5 Start up 12
4.6 Resetting the pump 12
5. Handling and storing the product 12
5.1 Handling the product 12
5.2 Storing the product 12
6. Product introduction 13
6.1 Product description 13
6.2 Applications 13
6.3 Pumped liquids 13
6.4 Potentially explosive environments 14
6.5 Approvals 15
6.6 Identification 16
7. Protection and control functions 17
7.1 Built-in protection 17
7.2 Thermal switches 17
8. Servicing and maintaining the product 17
8.1 Safety instructions and requirements 17
8.2 Contaminated pumps 18
8.3 Maintenance schedule 19
8.4 Oil check and oil change 19
8.5 Cleaning the sensors 20
8.6 Adjusting the impeller clearance 21
8.7 Cleaning the pump housing 21
8.8 Checking/replacing the shaft seal 21
8.9 Service kits 22
9. Fault finding the product 23
9.1 Megging 23
10. Technical data 24
10.1 Operating conditions 24
10.2 Electrical data 24
10.3 Dimensions and weights 24
11. Disposing of the product 24
Read this document before installing the
product. Installation and operation must
comply with local regulations and accepted
codes of good practice.
This appliance can be used by children
aged from 8 years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given
supervision or instruction concerning use
of the appliance in a safe way and
understand the hazards involved.
Children shall not play with the appliance.
Cleaning and user maintenance shall not
be made by children without supervision.

English (GB)
3
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.
1.3 Target groups
These installation and operating instructions are
intended fro professional installers.
2. Receiving the product
The pump may be transported and stored in a
vertical or horizontal position. Make sure that the
pump cannot roll or fall over.
Check that the protective cap for the level sensor
has not been damaged during transportation. See
pos. 7 in figs 10 and 11. If the protective cap is
defective, contact your nearest Grundfos company.
2.1 Transporting the product
All lifting equipment must be rated for the purpose
and checked for damage before any attempts to lift
the pump. The lifting equipment rating must under no
circumstances be exceeded. The pump weight is
stated on the pump nameplate.
The polyurethane-embedded plug prevents water
from penetrating into the motor via the power cable.
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.
WARNING
Crushing hazard
Death or serious personal injury
- Do not stack pump packages or pallets
on top of each other when lifting or
moving them.
- Always lift the pump by its lifting bracket
or by means of a forklift truck if the
pump is fixed on a pallet. Never lift the
pump by means of the power cable,
hose or pipe.
CAUTION
Sharp element
Minor or moderate personal injury
- Make sure not to cut your hands on the
sharp edges when opening the pump
package.
We recommend that you keep the cable
end protectors in storage for later use.

English (GB)
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3. Installing the product
For safety reasons, all work in pits must be
supervised by a person outside the pump pit.
Carelessness during lifting or transportation may
cause personal injury or damage to the pump.
3.1 Mechanical installation
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.
Persons must not enter the installation
area when the atmosphere is explosive.
DANGER
Electric shock
Death or serious personal injury
- It must be possible to lock the main
switch in position 0. Type and
requirements as specified in EN 60204-
1, 5.3.2.
DANGER
Electric shock
Death or serious personal injury
- Make sure there are at least 3 m free
cable above the maximum liquid level.
We recommend that you carry out all
maintenance and service work when the
pump is placed outside the pit.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure that the lifting bracket is
tightened before attempting to lift the
pump. Tighten if necessary.
Make sure the pit bottom is even before
installing the product.
DANGER
Electric shock
Death or serious personal injury
- Before beginning the installation, switch
off the power supply and lock the main
switch in position 0.
- Switch off any external voltage
connected to the product before working
on it.
CAUTION
Hot surface
Minor or moderate personal injury
- Make sure that the pump has cooled
down before touching it.
DANGER
Electric shock
Death or serious personal injury
- Before installing the pump and starting it
up for the first time, check the power
cable for visible defects to avoid short
circuits.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the pump thoroughly with clean
water and rinse the pump parts in water
after dismantling.
Pits for submersible sewage and
wastewater pumps may contain sewage
or wastewater with toxic and/or disease-
causing substances.
- Wear appropriate personal protective
equipment and clothing.
- Observe the local hygiene regulations in
force.

English (GB)
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Fit the extra nameplate supplied with the pump at the
installation site or keep it in the cover of this booklet.
Observe all safety regulations at the installation site,
for instance the use of blowers for fresh-air supply to
the pit.
Check the oil level in the oil chamber before
installing the pump. See section 8.4 Oil check and oil
change.
The pumps are suitable for different installation types
which are described in sections 3.1.2 Installation on
auto coupling and 3.1.3 Free-standing submerged
installation.
The pump housings have a cast iron DN 65, PN 10
outlet flange.
3.1.1 Lifting the product
Carelessness during lifting or transportation may
cause personal injury or damage to the pump.
When lifting the pump, use the right lifting point to
keep the pump balanced. Place the lifting chain hook
in point A for auto-coupling installations and in point
B for other installations. See fig. 1.
Fig. 1 Lifting points
The pumps are designed for intermittent
operation. When completely submerged in
the pumped liquid, the pumps can also
operate continuously.
Always use Grundfos accessories to avoid
malfunctions due to incorrect installation.
Only use the lifting bracket for lifting the
pump. Do not use it to hold the pump when
in operation.
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 pump has been
switched off by removing the fuses or
switching off the main switch.
- Make sure that the power supply cannot
be accidentally switched on.
Make sure that the liquid entering the pit
through the inlet does not cause water to
be splashed on the sensors of the pump.
CAUTION
Biological hazard
Minor or moderate personal injury
- Make sure to seal the pump outlet
properly when fitting the outlet pipe,
otherwise water might spray out of the
sealing.
WARNING
Crushing of hands
Death or serious personal injury
- When lifting the pump, make sure your
hand is not caught between the lifting
bracket and the hook.
CAUTION
Crushing hazard
Minor or moderate personal injury
- Make sure that the hook is fixed
properly to the lifting bracket.
- Always lift the pump by its lifting bracket
or by means of a forklift truck if the
pump is fixed on a pallet.
- Never lift the pump by means of the
power cable, hose or pipe.
- Make sure that the lifting bracket is
tightened before attempting to lift the
pump. Tighten if necessary.
TM06 0066 4813

English (GB)
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3.1.2 Installation on auto coupling
Pumps for permanent installation can be installed on
a stationary auto-coupling guide rail system.
The auto-coupling system facilitates maintenance
and service as the pump can easily be lifted out of
the pit.
We recommend that you use loose flanges to ease
the installation and to avoid pipe tension at flanges
and bolts.
Auto-coupling guide rail system
See fig. 1 in Appendix.
Proceed as follows:
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 bolts.
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,
the auto-coupling base unit must be supported so
that it is level when being fastened.
3. Assemble the outlet line in accordance with the
generally accepted procedures and without
exposing the line to distortion or tension.
4. Insert the guide rails in the auto-coupling base
unit, and adjust the length of the rails accurately
to the guide rail bracket at the top of the pit.
5. Unscrew the provisionally fastened guide rail
bracket, fit it on top of the guide rails, and finally
fasten it firmly to the pit wall.
6. Clean out debris from the pit before lowering the
pump into the pit.
7. Fit the guide claw to the pump outlet. Grease the
gasket of the guide claw before lowering the
pump into the pit.
8. Slide the guide claw between the guide rails and
lower the pump into the pit by means of a chain
secured to the pump lifting bracket. When the
pump reaches the auto-coupling base unit, the
pump will automatically connect tightly.
9. 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
housing.
10. Adjust the length of the power cable by coiling it
up on a relief fitting to ensure that the cable is not
damaged during operation. Fasten the relief
fitting to a suitable hook at the top of the pit.
Make sure that the cables are not sharply bent or
pinched.
11. Connect the power cable and the control cable, if
any.
Before beginning installation procedures,
make sure that the atmosphere in the pit is
not potentially explosive.
Make sure that the pipes are installed
without the use of undue force. No loads
from weight of the pipes must be carried
by the pump.
Do not use elastic elements or bellows in
the pipes. Never use these elements as a
means to align the pipes.
The guide rails must not have any axial
play as this would cause noise during
pump operation.
When the pump has reached the auto-
coupling base unit, shake the pump by
means of the chain to make sure that it is
placed in the correct position.
The free end of the cable must not be
submerged as water may penetrate
through the cable into the motor.

English (GB)
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3.1.3 Free-standing submerged installation
Pumps for free-standing submerged installation can
stand freely on the bottom of the pit or similar
location. See fig. 2 in Appendix.
The pump must be mounted on separate feet
(accessory).
In order to facilitate service on the pump, fit a flexible
union or coupling to the outlet line for easy
separation.
If a hose is used, make sure that the hose does not
buckle and that the inside diameter of the hose
matches that of the outlet port.
If a rigid pipe is used, fit the union or coupling, non-
return valve and isolating valve in the order
mentioned, when viewed from the pump.
If the pump is installed in muddy conditions or on
uneven ground, we recommend that you support the
pump on bricks or a similar support.
Proceed as follows:
1. Fit a 90 ° elbow to the pump outlet, and connect
the outlet pipe or hose.
2. 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 cable.
3. 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
housing.
4. Adjust the length of the power cable by coiling it
up on a relief fitting to ensure that the cable is not
damaged during operation. Fasten the relief
fitting to a suitable hook. Make sure that the
cables are not sharply bent or pinched.
5. Connect the power cable and the control cable, if
any.
3.2 Electrical connection
Carry out the electrical connection according to local
regulations.
The pump incorporates a motor-protective circuit
breaker and all control logic.
The free end of the cable must not be
submerged as water may penetrate
through the cable into the motor.
If several pumps are installed in the same
pit, the pumps must be installed at the
same level in order to allow optimum pump
alternation.
Do not run the pump via a frequency
converter.
DANGER
Electric shock
Death or serious personal injury
- Connect the pump to an external main
switch which ensures all-pole
disconnection with a contact separation
according to EN 60204-1, 5.3.2.
- It must be possible to lock the main
switch in position 0. Type and
requirements as specified in EN 60204-
1, 5.3.2.
Make sure there are at least 3 m free cable
above the maximum liquid level.
The classification of the installation site
must be approved according to local rules
in each individual case.
The CIU unit, if used, must not be installed
in potentially explosive environments.
On explosion-proof pumps, make sure that
an external earth conductor is connected
to the external earth terminal of the pump
using a conductor with a secure cable
clamp. Clean the surface for external earth
connection, and fit the cable clamp.
The cross section of the earth conductor
must be at least 4 mm2, e.g. type H07 V2-
K (PVT 90 °) yellow and green.
Make sure that the earth connection is
protected from corrosion.
DANGER
Electric shock
Death or serious personal injury
- If the power cable is damaged, it must
be replaced by the manufacturer, his
service agent or a similarly qualified
person.
Set the motor-protective circuit breaker to
the maximum current of the pump. The
maximum current is stated on the pump
nameplate.
Make sure that the pump is connected in
accordance with the instructions given in
this booklet.

English (GB)
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The supply voltage and frequency are marked on the
pump nameplate. For voltage tolerance, see section
10. Technical data. Make sure that the motor is
suitable for the power supply available at the
installation site.
All pumps are supplied with 10 m cable and a free
cable end.
3.2.1 Wiring diagrams
Single-phase pumps
The pump has a patented start function which
eliminates the need of a starting capacitor. The run
capacitor is incorporated in the pump.
Fig. 2 Wiring diagram for single-phase pumps
Three-phase pumps
The pump motor is designed so that the phase
sequence in the terminal box is clockwise. This can
be determined with a phase sequence detector. The
pump does not start unless the phase sequence is
correct.
If the dry-running sensors are covered by liquid, and
the pump does not start, the cause may be a wrong
phase sequence. Interchange L1 and L2.
Fig. 3 Wiring diagram for three-phase pumps
Grundfos CIU
CIU stands for "Communication Interface Unit", and
CIU is used as a communication interface between
an SL1 or SLV AUTOADAPT pump and a main data
communication network.
CIU is optional. See separate installation and
operating instructions supplied with the unit.
3.2.2 Alarm relay or communication connection
The pump incorporates an alarm relay output. NC
and NO are available and can be used as required,
for example for acoustic or visual alarms. Maximum
relay load is 230 VAC 2 A.
Alternatively, the wires 4 and 6 can be used for
external communication via a CIU.
See example of wiring diagram in the documentation
supplied with the CIU unit.
3.2.3 Supply requirement
The maximum permissible system impedance Zmax
must be 0.24 Ohm at 50 Hz at the interface point of
the user’s supply or the current capacity, which is
100 A per phase, supplied from a distribution
network.
If not, a minor voltage drop may occur, which may
result in a brief flashing of an electric light.
Consult the supply authority, if necessary, to ensure
that the current capacity at the interface point is
sufficient for the equipment.
DANGER
Electric shock
Death or serious personal injury
- Before installing the pump and starting it
up for the first time, check the power
cable for visible defects to avoid short
circuits.
A possible replacement of the power cable
must be carried out by Grundfos or a
service workshop authorised by Grundfos.
TM04 4297 1209
2 A 230 VAC
TM04 4298 1209
If a CIU is connected, do not use a relay.
CIU incorporates a relay which takes over
the alarm function.

English (GB)
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4. Starting up the product
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 pump has been
switched off by removing the fuses or
switching off the main switch.
- Make sure that the power supply cannot
be accidentally switched on.
Before starting the product:
- Make sure that the fuses have been
removed.
- Make sure that all protective equipment
has been connected correctly.
CAUTION
Biological hazard
Minor or moderate personal injury
- Make sure to seal the pump outlet
properly when fitting the outlet pipe
otherwise water might spray out of the
sealing.
WARNING
Crushing of hands
Death or serious personal injury
- When lifting the pump, make sure your
hand is not caught between the lifting
bracket and the hook.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure that the hook is fixed
properly to the lifting bracket.
- Always lift the pump by its lifting bracket
or by means of a forklift truck if the
pump is fixed on a pallet.
- Never lift the pump by means of the
power cable, hose or pipe.
- Make sure that the lifting bracket is
tightened before attempting to lift the
pump. Tighten if necessary.
DANGER
Electric shock
Death or serious personal injury
- Before starting up the product for the
first time, check the power cable for
visible defects to avoid short circuits.
- If the power cable is damaged, it must
be replaced by the manufacturer, his
service agent or a similarly qualified
person.
- Make sure that the product is earthed
properly.
- Switch off the power supply and lock the
main switch in position 0.
- Switch off any external voltage
connected to the product before working
on it.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the pump thoroughly with clean
water and rinse the pump parts in water
after dismantling.
Pits for submersible sewage and
wastewater pumps may contain sewage
or wastewater with toxic and/or disease-
causing substances.
- Wear appropriate personal protective
equipment and clothing.
- Observe the local hygiene regulations in
force.
CAUTION
Hot surface
Minor or moderate personal injury
- Do not touch the surface of the pump
while the pump is running.
Do not open the clamp while the pump is
running.

English (GB)
10
4.1 Operating modes
The pumps are designed for intermittent operation
(S3). When completely submerged, the pumps can
also operate continuously (S1).
S3, intermittent operation
S3 operation is a series of 10-minute duty cycles
(TC). Each cycle has a 4-minute period of constant
load followed by a 6-minute period of rest. Thermal
equilibrium is not reached during the cycle. See fig.
4.
In this operating mode, the pump is partly
submerged in the surrounding liquid. The minimum
liquid level is at the top of the cable entry.
Fig. 4 S3 operation
S1, continuous operation
In this operating mode, the pump can operate
continuously without being stopped for cooling.
Being completely submerged, the pump is
sufficiently cooled by the surrounding liquid. See fig.
5.
Fig. 5 S1 operation
4.2 Preparations for starting up
4.2.1 Default settings
The pump is supplied from the factory with the
following default settings.
If one or more of the above parameters are to be
changed, use the optional CIU together with
Grundfos GO.
CIU can be connected temporarily for configuration.
If no CIU is available, the parameters can be
changed by means of Grundfos PC-tool. For further
information, see installation and operating
instructions for CIU.
Fig. 6 Start and stop levels
4.2.2 Pump alternation
If up to four pumps are installed in the same pit, the
control logic incorporated in the pumps will ensure
that the load is distributed evenly among the pumps
over time.
Alternation is carried out according to a patented
method based on measurement of the liquid level in
the pit.
Do not start the pump if the atmosphere in
the pit is potentially explosive.
TM04 4527 1509TM04 4528 1509
Operation
Stop TC
P
t
Operation
Stop
Parameter 0.9 - 1.5 kW
Start delay (random) Off
Start level 25 cm
High-level alarm +10 cm
Anti-seizing:
Interval 3 days
Duration 2 sec.
TM06 5933 0316
The barometric pressure may affect the
alternating sequence.
Alarm
Start
Stop

English (GB)
11
4.3 Start and stop levels
4.3.1 Setting the start level
The pump start level may be affected by the
barometric pressure. In the case of long intervals
between start and stop, the start level may differ
from the set level. See examples below.
Example 1: Constant barometric pressure
The pump will start when the liquid level in the pit
has reached the set start level. Then the pump will
run until the liquid level reaches the stop level. When
it stops, the pump will calibrate itself in relation to the
actual barometric pressure. See fig. 7.
Fig. 7 Example 1: Constant barometric
pressure
Example 2: Rising barometric pressure
If the barometric pressure rises after the pump has
stopped, the pump will register this rise as a rise in
liquid level. The result may be that the pump starts
before the set start level is reached. See fig. 8.
Fig. 8 Example 2: Rising barometric pressure
Example 3: Falling barometric pressure
If the barometric pressure falls after the pump has
stopped, the pump will register this fall as a fall in
liquid level. The result may be that the pump starts
after the set start level was reached. See fig. 6.
Therefore, the distance between the pump stop level
and the inlet to the pit must be at least 50 cm. See
fig. 9.
Fig. 9 Example 3: Falling barometric pressure
TM04 4337 1209TM04 4338 1209
Barometric pressure
Pump running
Start level set
Stop level
Barometric pressure
Pump running
Start level set
Stop level
TM04 4339 1209
The pump incorporates dry-running
protection via two dry-running sensors
placed on either side of the electronic unit.
If the water level falls below a dry-running
sensor, the pump will stop immediately,
and it cannot restart until the sensors are
fully submerged again.
The sensors must be cleaned at regular
intervals, depending on the deposits of
sludge on the sensors in the pit.
Barometric pressure
Pump running
Start level set
Stop level

English (GB)
12
4.4 Direction of rotation
All single-phase pumps are factory-wired for the
correct direction of rotation.
The electronics incorporated in three-phase pumps
ensure that the pump does not start with a wrong
phase sequence, and consequently wrong direction
of rotation.
If the pump does not run, and the liquid level is
above the dry-running sensors, interchange L1 and
L2.
An arrow on the stator housing indicates the correct
direction of rotation.
4.5 Start up
Proceed as follows:
1. Remove the fuses and check that the impeller
can rotate freely. Turn the impeller by hand.
2. Check the condition of the oil in the oil chamber.
See also section 8.4 Oil check and oil change.
3. Check that the level sensor is clean, and that the
protective cap is intact.
4. Check that the dry-running sensors are clean.
5. Open the isolating valves, if fitted.
Auto coupling: It is important to grease the
gasket of the guide claw before lowering the
pump into the pit.
6. Lower the pump into the liquid, and insert the
fuses.
Auto coupling: Check that the pump is in the
right position on the auto-coupling base unit.
7. Check that the system has been filled with liquid
and vented. The pump is self-venting.
8. Switch on the power supply to the pump.
When the power is on, the pump will start and
pump down to the dry-running level. This process
can be used to check that the pump functions
correctly.
After one week of operation or after replacement of
the shaft seal, check the condition of the oil in the oil
chamber. See section 8.4 Oil check and oil change.
4.6 Resetting the pump
To reset the pump, switch off the power supply to the
pump for one minute, and switch it on again.
5. Handling and storing the product
5.1 Handling the product
Before handling the product, see section 3.1.1 Lifting
the product.
5.2 Storing the product
During long periods of storage, protect the pump
against moisture, heat and temperatures below -25
°C.
After a long period of storage, inspect the pump
before putting it into operation. Make sure that the
impeller can rotate freely. Pay special attention to the
condition of the shaft seal, cable entry and sensors.
The pump may be started for a very short
period without being submerged to check
the direction of rotation.
The pump must not run dry.
If the atmosphere in the pit is potentially
explosive, use only pumps with Ex
approval.
Before startup, check that the system has
been filled with liquid and vented. The
pump is self-venting.
If the dry-running sensors are not covered
by liquid, the pump cannot start.
In case of abnormal noise or vibrations
from the pump, other pump failure or
power supply failure, stop the pump
immediately.
Do not attempt to restart the pump until the
cause of the fault has been found and
corrected.
If the dry-running sensors are not covered
by liquid, the pump cannot start. To check
that the phase sequence is correct, test
run the pump for a few seconds. If the
pump does not run, interchange L1 and L2
and repeat the test run.

English (GB)
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6. Product introduction
6.1 Product description
Fig. 10 SL1.50.65 AUTOADAPT pump
Fig. 11 SLV.65.65 AUTOADAPT pump
6.2 Applications
The compact design makes the pumps suitable for
both temporary and permanent installation.
The pumps can be installed on an auto-coupling
system or stand freely on the bottom of the pit.
SL1 and SLV AUTOADAPT pumps are portable and
designed for pumping domestic and industrial
sewage and wastewater.
6.3 Pumped liquids
SL1.50.65
The product is designed for pumping these liquids:
• large quantities of drainage and surface water
• domestic wastewater with discharge from toilets
• wastewater from commercial buildings without
discharge from toilets
• sludge-containing industrial wastewater
• industrial process water.
SLV.65.65
The product is designed for pumping these liquids:
• surface water with abrasive particles
• municipal sewage
• sewage from commercial buildings
• sludge- or fibre-containing industrial wastewater.
TM06 5932 0316TM06 5940 0316
Pos. Description
1 Cable plug
2 Electronic unit
3 Outlet flange DN 65, PN 10
4 Outlet port
5 Lifting bracket
6 Stator housing
7 Level sensor
8 Oil screw
9Clamp
10 Dry-running sensors
11 Pump foot
12 Pump housing

English (GB)
14
6.4 Potentially explosive environments
Use explosion-proof pumps for applications in
potentially explosive environments.
The pumps must under no circumstance
pump combustible or flammable liquids.
The classification of the installation site
must be approved according to local rules
in each individual case.
The letter X in the certificate number
indicates that the equipment is subject to
special conditions for safe use. The
conditions are mentioned in the certificate
and in these installation and operating
instructions.
Special conditions for safe use of
explosion-proof pumps:
1. Bolts used for replacement must be
class A2-80 or better according to EN/
ISO 3506-1.
2. The pump must not run dry.
3. Make sure the permanently attached
cable is suitably mechanically
protected and terminated in a suitable
terminal board placed outside the
potentially explosive area.
4. The thermal protection in the stator
windings has a rated cutout
temperature of 150 °C guaranteeing
the disconnection of the power supply.
5. The IP68 rating is limited to maximum
10 m submersion depth.
6. The temperature range is limited to -20
to +40 °C for ambient temperature and
0-40 °C for liquids.
7. Contact the manufacturer regarding the
"d" protection type for pumps and for
information on the dimensions of the
flameproof joints.
8. The lock nut of the cable connector
must only be replaced with an identical
one.

English (GB)
15
6.5 Approvals
All versions have been approved by TÜV Rheinland
LGA (notified body under the Construction Products
directive) according to EN 12050-1 or EN 12050-2 as
specified on the pump nameplate.
6.5.1 Approval standards
The explosion proof versions has been approved by
DEKRA according to the ATEX directive.
The explosion protection classification of the pumps
is Europe CE 0344 II 2 G Ex db h ib IIB T4 Gb.
6.5.2 Australia
For IEC countries, such as Australia and others, the explosion-proof versions have been approved by DEKRA,
certificate no. IECEx DEK 11.0026X. The explosion protection classification of the pumps is Ex db h ib IIB T4
Gb based on IEC 60079-0:2017 and IEC 60079-1:2014, IEC 60079-11:2011, ISO 80079-36:2016, ISO 80079-
37:2016.
Directive or
standard Code Description
ATEX
CE 0344 = CE mark of conformity according to the ATEX directive 2014/34/EU. 0344 is the number of the notified body which has certified the quality
system for ATEX.
= Explosion protection mark.
II = Equipment group according to the ATEX directive, defining the
requirements applicable to the equipment in this group.
2=
Equipment category according to the ATEX directive, defining the
requirements applicable to the equipment in this category.
G = Explosive atmosphere caused by gases, vapours or mists.
Harmonised
European standard
Ex = The equipment conforms to the harmonised European standard.
h = Non-electrical equipment for explosive atmosphere.
db = Flame-proof enclosure according to EN 60079-1.
ib = Intrinsic safety.
IIB = Classification of gases, see EN 60079-0.
Gas group B includes gas group A.
T4 = Maximum surface temperature is 135 °C.
Gb = Equipment for explosive gas atmosphere with "high" level of
protection.
Standards Code Description
IEC 60079-0:2011,
IEC 60079-1:2014,
IEC 60079-11:2011
Ex = The equipment conforms to the IECEx.
db = Flame-proof enclosure.
ib = Intrinsic safety.
IIB = Classification of gases.
Gas group B includes gas group A.
T4 = Maximum surface temperature is 135 °C.
Gb = Equipment for explosive gas atmosphere with "high" level of
protection.

English (GB)
16
6.6 Identification
6.6.1 Nameplate
Fig. 12 Nameplate
6.6.2 Type key
Example: SL1.50.65.11.E.2.1.502
* The pumps in the individual generations differ in
design but are similar in terms of power rating.
TM05 8872 1619
Pos. Description
1 Type designation
2 Product number
3 Approval
4 ATEX certificate number
5 IEC Ex description
6 IEC Ex certificate number
7 Production code, year and week
8 Enclosure class according to IEC 60529
9 Maximum head [m]
10 Rated input power [kW]
11 Rated voltage
12 Speed [rpm]
13 Net weight [kg]
14 Run capacitor [μF]
15 Marks of approval
16 Safety instructions, publication number
17 Ex description
18 Maximum installation depth [m]
19 Maximum flow rate [l/s]
20 Rated power output [kW]
21 Rated current [A]
22 Cos φ, 1/1 load
23 Maximum liquid temperature [°C]
24 Frequency [Hz]
25 Insulation class
26 Production country
Type:
1
16
17
18
19
20
21
22
23
24
25
26
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Model:
P. c
IP68
Hmax: Qmax:
P2:
&RVij
Tmax:
Hz
Insul.class:
Made in Tatabánya, Hungary
°C
P1:
n: min
Weight:
kW kW
kg
opr.: ȝ)
mI/s
-1
DK-8850 Bjeringbro,Denmark
See manual
99449742
Code Description Explanation
SL Grundfos sewage/
wastewater pump Pump type
1 Single-channel impeller
Impeller type
VFree-flow impeller
(SuperVortex)
50 Maximum solids size
50 = 50 mm Pump passage
65 Nominal diameter of pump outlet port
65 = 65 mm Pump outlet
11 Output power P2
11 = 1.1 kW Power [kW]
EAUTO
ADAPT version Equipment
[ ] Standard version Pump version
Ex Explosion-proof pump
2 2-pole Number of poles
[ ] Single-phase motor Number of
phases
3 Three-phase motor
5 50 Hz Frequency [Hz]
02 230 V, DOL Voltage code
and starting
method
0B 400-415 V, DOL
[ ] 1st generation
Generation*A 2nd generation
B 3rd generation
[ ] Standard Pump material

English (GB)
17
7. Protection and control functions
7.1 Built-in protection
The motor incorporates an electronic unit which
protects the motor in various situations.
In case of overload, the built-in overload protection
stops the pump for 5 minutes. After that period, the
pump is ready to restart if the starting conditions are
fulfilled.
To reset the pump, switch off the power supply to the
pump for one minute, and switch it on again.
The motor is protected in the following situations:
• dry running
• voltage surges up to 6000 V
In areas with high lightning intensity, external
lightning protection is required.
• overvoltage
• undervoltage
• overload
• overtemperature
7.2 Thermal switches
All pumps have two sets of thermal switches
incorporated in the stator windings.
When a thermal switch is activated, the pump will
stop immediately, and it will not restart until the
motor windings have cooled sufficiently.
If the pump does not restart automatically, the pump
must be reset and restarted manually. If the pump
has to be restarted manually repeatedly, contact
Grundfos or a service workshop authorised by
Grundfos.
8. Servicing and maintaining the
product
8.1 Safety instructions and requirements
DANGER
Electric shock
Death or serious personal injury
- Before starting work on the pump, make
sure that the fuses have been removed
or the main switch has been switched
off.
- Make sure that the power supply cannot
be accidentally switched on.
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 pump has been
switched off by removing the fuses or
switching off the main switch.
- Make sure that all rotating parts have
stopped moving.
CAUTION
Biological hazard
Minor or moderate personal injury
- Make sure to seal the pump outlet
properly when fitting the outlet pipe,
otherwise water might spray out of the
sealing.
CAUTION
Hot surface
Minor or moderate personal injury
- Do not touch the surface of the pump
while the pump is running.
WARNING
Crushing of hands
Death or serious personal injury
- When lifting the pump, make sure your
hand is not caught between the lifting
bracket and the hook.

English (GB)
18
8.2 Contaminated pumps
The product will be classified as contaminated if it
has been used for a liquid which is injurious to health
or toxic.
If you request Grundfos to service the product,
contact Grundfos with details about the pumped
liquid before returning the product for service.
Otherwise, Grundfos can refuse to accept the
product for service.
Any application for service must include details
about the pumped liquid.
Clean the product in the best possible way before
you return it.
Costs of returning the product are to be paid by the
customer.
DANGER
Crushing hazard
Death or serious personal injury
- Make sure that the hook is fixed
properly to the lifting bracket.
- Always lift the pump by its lifting bracket
or by means of a forklift truck if the
pump is fixed on a pallet.
- Never lift the pump by means of the
power cable, hose or pipe.
- Make sure that the lifting bracket is
tightened before attempting to lift the
pump. Tighten if necessary.
DANGER
Electric shock
Death or serious personal injury
- Before installing the pump and starting it
up for the first time, check the power
cable for visible defects to avoid short
circuits.
- If the power cable is damaged, it must
be replaced by the manufacturer, his
service agent or a similarly qualified
person.
- Make sure that the product is earthed
properly.
- Switch off the power supply and lock the
main switch in position 0.
- Switch off any external voltage
connected to the product before working
on it.
CAUTION
Biological hazard
Minor or moderate personal injury
- Flush the pump thoroughly with clean
water and rinse the pump parts in water
after dismantling.
Pits for submersible sewage and
wastewater pumps may contain sewage
or wastewater with toxic and/or disease-
causing substances.
- Wear appropriate personal protective
equipment and clothing.
- Observe the local hygiene regulations in
force.
CAUTION
Pressurised system
Minor or moderate personal injury
- As pressure may have built up in the oil
chamber, do not remove the screws
until the pressure has been fully
relieved.
Except for service on the pump parts, all
other service work must be carried out by
Grundfos or a service workshop
authorised by Grundfos and approved for
servicing explosion-proof products.
If the pump is inactive for long periods of
time, we recommend that you check the
function of the pump.
Service videos can be found in Grundfos
Product Center at www.grundfos.com.
A possible replacement of the power cable
must be carried out by Grundfos or a
service workshop authorised by Grundfos.
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)
19
8.3 Maintenance schedule
Inspect pumps running normal operation every 3000
operating hours or at least once a year. If the dry-
solid content of the pumped liquid is very high or
sandy, check the pump at shorter intervals.
Check the following points:
•Power consumption
See section 6.6.1 Nameplate.
•Oil level and oil condition
When the pump is new or after replacement of
the shaft seal, check the oil level after one week
of operation.
Use Shell Ondina X420 oil or similar type.
See section 8.4 Oil check and oil change.
•Sensors
For cleaning of sensors, see section 8.5 Cleaning
the sensors.
• Cable entry
•Pump parts
Check the impeller, the pump housing, etc. for
possible wear. Replace defective parts. See
section 8.9 Service kits.
•Ball bearings
Check the shaft for noisy or heavy operation by
turning the shaft by hand. Replace defective ball
bearings.
A general overhaul of the pump is usually
required in case of defective ball bearings or poor
motor function. This work must be carried out by
Grundfos or a service workshop authorised by
Grundfos.
8.4 Oil check and oil change
Every 3000 operating hours or at least once a year,
change the oil in the oil chamber as described below.
If the shaft seal has been changed, the oil must be
changed as well.
The table below states the quantity of oil in the oil
chamber:
Draining of oil
1. Loosen and remove both oil screws to allow all
the oil to drain from the chamber.
2. Check the oil for water and impurities. If the shaft
seal has been removed, the oil will give a good
indication of the condition of the shaft seal.
Oil filling, pump lying down
See fig. 13.
1. Place the pump in such a position that it is lying
on the stator housing and the outlet flange and
that the oil screws are pointing upwards.
2. Fill oil into the oil chamber through the upper hole
until it starts running out of the lower hole. The oil
level is now correct.
3. Fit both oil screws using the gaskets included in
the O-ring service kit. See section 8.9 Service
kits.
Fig. 13 Oil filling holes
Oil filling, pump in upright position
1. Place the pump on a plane, horizontal surface.
2. Fill oil into the oil chamber through one of the
holes until it starts running out of the other hole.
3. Fit both oil screws using the gaskets included in
the O-ring service kit. See section 8.9 Service
kits.
Make sure that the cable entry is
watertight and that the cable is not sharply
bent and/or pinched.
Pump type Quantity of oil in the
oil chamber [l]
All types 0.17
CAUTION
Pressurised system
Minor or moderate personal injury
- As pressure may have built up in the oil
chamber, do not remove the screws
until the pressure has been fully
relieved.
Dispose of used oil in accordance with
local regulations.
TM06 5874 0316
Oil level
Oil filling

English (GB)
20
8.5 Cleaning the sensors
The cleaning intervals below are stated as guidelines
and must be adapted to the pit.
Cleaning intervals for non-explosion-proof
pumps
The following table lists the recommended cleaning
intervals for sensors in non-explosion-proof pumps.
These cleaning intervals are for guidance. We
recommend that you find the right cleaning level
based on experience and the composition of the
wastewater in the specific application.
Cleaning intervals for sensors in explosion-proof
pumps
The following table lists the required cleaning
intervals for sensors in explosion-proof pumps.
Fig. 14 Position of level and dry-running
sensors
Proceed as follows:
See fig. 14.
1. Level sensor (7):
Flush the sensor with clean water.
Dry-running sensors (10):
Flush the dry-running sensors with clean water
and clean them using a soft brush.
2. Switch on the power supply to the pump.
3. Check that the pump starts and pumps down to
the dry-running level.
Checking the functionality of the dry-running
sensors
1. Cover one dry-running sensor with a wet cloth.
2. Let the pump run and pump down to the dry-
running level.
– The pump must stop at the dry-running level.
3. Repeat this check with the other sensor.
Wastewater
containing
grease
Wastewater
containing dry
solid matter or
fibres
Wastewater
without grease,
dry solid matter
or fibres
3 months 6 months 12 months
Cleaning intervals of the sensors in
explosion-proof pumps are mandatory in
order to ensure that the pump is working
correctly.
After cleaning, both dry-running sensors
must be checked individually for proper
functioning.
If the dry-running sensors are not
functioning properly, there is a risk of dry-
running of the hydraulic part of the pump,
which can provoke ignition.
Wastewater
containing
grease
Wastewater
containing dry
solid matter or
fibres
Wastewater
without grease,
dry solid matter
or fibres
3 months 6 months 6 months
TM04 4811 2109
To avoid damaging the sensors, do not use
other cleaning aids than those mentioned
in this booklet.
If the dry-running sensors are not covered
by liquid, the pump cannot start.