Grundfos SE Series User manual

SE, SL, 9-30 kW
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
Installation and operating instructions
http://net.grundfos.com/qr/i/98142266

English (GB)
2
English (GB) Installation and operating instructions
Original installation and operating instructions
These installation and operating instructions
describe Grundfos SE, SL pumps, 9-30 kW.
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 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 Hazard statements 2
1.2 Notes 3
2. Receiving the product 3
2.1 Transporting the product 3
3. Installing the product 4
3.1 Mechanical installation 4
3.2 Level of pumped liquid 9
3.3 Torques for inlet and outlet flanges 10
3.4 Electrical connection 11
4. Starting up the product 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
7. Approvals 18
7.1 Explanation of Ex approval 18
7.2 Potentially explosive environments 19
7.3 Ex certification and classification 19
7.4 Identification 20
8. Servicing and maintaining the product 22
8.1 Checking and changing the motor liquid 23
8.2 Inspecting and adjusting the impeller
clearance 25
8.3 Explosion-proof SE, SL pumps, 9-30 kW 26
8.4 Contaminated pumps 26
9. Fault finding 27
10. Technical data 29
10.1 Operating conditions 29
10.2 Sound pressure level 29
10.3 Motor liquid 29
10.4 Electrical data 29
11. Sensor overview 30
11.1 Standard (Ex) 31
11.2 Sensor, version 1 (Ex) 31
11.3 Sensor, version 2 (Ex) 31
12. Disposing of the product 31
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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1.2 Notes
The symbols and notes below may appear in
Grundfos installation and operating instructions,
safety instructions and service instructions.
2. Receiving the product
The pump is supplied from the factory in a proper
packing in which it should remain until it is to be
installed. Make sure that the pump cannot roll or fall
over.
2.1 Transporting the product
All lifting equipment must be rated for the purpose
and checked for damage before any attempt to lift
the pump. The lifting equipment rating must under no
circumstances be exceeded. The pump weight is
stated on the pump nameplate.
For long periods of storage, six months or longer, the
pump must be protected against moisture and heat.
Transportation and storage temperature: -20 to
+60 °C.
After a long period of storage, six months or longer,
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 seals,
O-rings and the cable entries.
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
Tipping hazard
Death or serious personal injury
- Use a service stand to support DN 100
and DN 150 (pressure ranges S and H)
in upright position.
WARNING
Crushing hazard
Death or serious personal injury
- Always lift the pump by its lifting bracket
or by means of a fork-lift.
DANGER
Electric shock
Death or serious personal injury
- Never lift the pump by means of the
power cable or the hose or pipe.
Leave the cable-end protectors on the
power cables until you start making the
electrical connection. Whether insulated or
not, the free cable end must never be
exposed to moisture or water.
Non-compliance with this may cause
damage to the motor.
If the pump is not in operation or is being
stored for more than one month, you must
turn the impeller by hand once a month.

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3. Installing the product
3.1 Mechanical installation
Fit 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.
3.1.1 Lifting the pump
Installation types S, C and D
When lifting the pump, use the right lifting point to
keep the pump balanced. SE, SL pumps installation
types S, C and D are equipped with two lifting points
which ensure that the pump can be lifted in a safe
manner. See fig. 1and the table below to find the
correct lifting point.
Fig. 1 Lifting points, installation types S, C and
D
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.
DANGER
Crushing
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 switch has been
locked in the 0-position.
- Make sure that the power supply cannot
accidentally be switched on.
The free end of the cable must not be
submerged as water may penetrate
through the cable into the motor.
Make sure that the pipes are installed
without the use of undue force. No loads
from the weight of the pipes must be
carried by the pump. We recommend that
you use loose flanges to ease the
installation and to avoid pipe tension at the
flanges.
SE, SL pumps, 9-30 kW, are fitted with
impellers of the S-tube®design. S-tube®
impellers are wet-balanced which will
reduce the vibrations during operation. If
these pumps are started with the pump
housing full of air, the vibration level will be
higher than for normal operation.
TM05 2684 0312
Outlet flange size Lifting point
DN 80 Middle
DN 100 Middle
DN 150 Middle
DN 200 Front
DN 250 Front
DN 300 Front
Front
Middle

English (GB)
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Installation type H
Installation type H can be lifted by a hole in the
flange and the middle lifting point. See fig. 2.
Fig. 2 Lifting points, installation type H
3.1.2 Installation types
SE, SL pumps, 9-30 kW, are designed for these
installation types:
• permanent, vertical, submerged installation in a
pit, types S and C, on auto coupling
• temporary, vertical, submerged installation in a
pit, types S and C, on base plate
• permanent, vertical or horizontal, dry installation
in a pump room, types D and H, on base stand or
base plate
• permanent, horizontal, dry installation in a pump
room, type H, on base stand and bracket.
Figures 3to 6show the installation types.
Permanent, vertical installation in a pit
The pump can easily be pulled out of and lowered
into the pit via the guide rails. See fig. 3. The liquid
level can be set lower for installation type C than for
type S. See fig. 8.
Fig. 3 Submerged installation on auto coupling
TM05 3449 1312
Always handle the pump by means of the
correct lifting points.
Installation types S and C on auto coupling
TM05 2535 0212

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Permanent, vertical installation in a pump room
Fasten the pump to the inlet and outlet pipes by
means of flange connections.
Fig. 4 Vertical, dry installation on base stand
(left) and base plate on two concrete
pedestals (right)
Permanent, horizontal installation in a pump
room
Fasten the pump to the inlet and outlet pipes by
means of flange connections. See fig. 5.
Fig. 5 Horizontal, dry installation on base stand
and bracket
Temporary, vertical installation in a pit
The liquid level can be set lower for type C than for
type S. See fig. 6.
Fig. 6 Temporary, vertical, submerged,
installation
3.1.3 Submerged installation on auto coupling
Pumps for permanent, vertical installation in a pit can
be installed on a stationary auto coupling and
operated completely or partially submerged in the
pumped liquid.
Pumps with DN 250 or DN 300 flanges
must be installed on a concrete
foundation. See fig. 4.
Installation type D
TM05 2536 0212 - TM06 6502 1716
Installation type H
TM05 2539 0212
Installation types S and C, temporary
installation
TM05 2538 0212
Make sure that the pipes are installed
without the use of undue force. No loads
from the weight of the pipes must be
carried by the pump. We recommend that
you use loose flanges to ease the
installation and to avoid pipe tension at the
flanges.
Do not use elastic elements or bellows in
the pipes; these elements must never be
used as a means to align the pipes.
In some installations, a plinth is required
beneath the auto coupling to ensure
correct installation of the pump. Consider
this during the design of the installation.
Liquid level for
installation type
C
Liquid level for
installation type
S and Ex pumps

English (GB)
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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 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
expansion 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 pipe in accordance with the
generally accepted procedures and without
exposing the pipe to distortion or tension.
4. Place the guide rails on 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. Insert the expansion dowels into the
holes. Fasten the guide rail bracket on the inside
of the pit. Tighten the bolts in the expansion
dowels.
6. Clean out debris from the pit before lowering the
pump into the pit.
7. Fit the guide claw to the pump.
8. Slide the guide claw of the pump between the
guide rails and lower the pump into the pit by
means of a chain secured to the lifting bracket of
the pump. 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.
Pull-out strength for anchor bolts
The guide rails must not have any axial
play as this will cause noise during pump
operation.
The free end of the cable must not be
submerged as water may penetrate
through the cable into the motor.
Auto-coupling
base unit
Bolts
[mm]
Pull-out strength
for a single bolt
[kN]
DN 80/100 M16 10
DN 100 M16 10
DN 150 M16 10
DN 200 M24 10
DN 250 M24 10
DN 300 M24 12
The pull-out strengths stated are without
safety factor. The required safety factor
may depend on the materials and method
used for anchoring.

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3.1.4 Permanent, vertical or horizontal, dry
installation in a pump room
Pumps in dry installation are installed 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.
Proceed as follows:
1. Mark and drill mounting holes in the concrete
floor or concrete foundation.
2. Fit the bracket or base stand to the pump.
3. Fasten the pump with expansion bolts.
4. Check that the pump is vertical or horizontal.
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 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.
7. Connect the power cable and the control cable, if
any.
Pull-out strength for anchor bolts
Recommendation for pump foundations
Note: This applies for pumps above 15 kW.
All rotating equipment generates vibrations when an
impeller or rotor is turning at high speeds. Proper
installation and anchorage of the pumps and
installation accessories is critical to limit vibrations
and achieve reliable installation. To ensure
acceptable vibration levels, all parts of the system
must be sufficiently stiff and firmly anchored to
minimize vibrations:
• 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.
• The mass of the concrete foundation must be a
minimum of three to five times the mass of the
supported equipment and must have sufficient
rigidity to withstand the axial, transverse, and
torsional loadings 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.
• Epoxy grout must always be used to mate the
pump base plate to the foundation.
Fig. 7 Eccentric reducer in horizontal
installation
In order to facilitate service on the pump,
we recommend that you use isolating
valves on either side of the pump.
Installation
types D and H Bolts
Pull-out strength for
a single bolt
[kN]
-- 5.0
The pull-out strengths stated are without
safety factor. The required safety factor
may depend on the materials and method
used for anchoring.
We recommend that you use a reducer
between the inlet pipe and the pump in
horizontal installations. The reducer must
be of the eccentric type and must be
installed so that the straight edge is
upwards. In this way, the accumulation of
air in the inlet pipe is avoided and the risk
of disturbance of operation is eliminated.
See fig. 7.
TM05 2540 0212
Reducer of the eccentric type
≥0.2 m

English (GB)
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3.1.5 Temporary, vertical, submerged installation
in a pit
Proceed as follows:
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
level, solid foundation.
4. When the pump is placed firmly on the bottom of
the pit, attach the end of the chain to a suitable
hook at the top of the pit in such a way that the
chain cannot come into contact with the pump
housing.
5. 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.
6. Connect the power cable and the control cable, if
any.
3.2 Level of pumped liquid
To ensure adequate cooling of the motor during
operation, the following minimum requirements must
be met:
•Installation type S
For S1 operation (continuous operation), the
pump must always be covered by the pumped
liquid to the top of the motor.
•Installation type C
The pump housing must always be covered by
the pumped liquid.
Fig. 8 Liquid level
•Installation types D and H
No special requirements.
During lowering, make sure that the pump
is hanging from the chain and not the
cable.
Do not allow the pump to run dry.
Install an additional level switch to ensure
that the pump is stopped in case the stop
level switch is not working.
The level of pumped liquid must be
controlled by level switches connected to
the motor control circuit. The minimum
level depends on the installation type and
is specified in the installation and
operating instructions.
For a short period of time, the pump may
be used to pump down the liquid level to
remove the float layer. For explosion-proof
pumps, do not go below the stop levels
shown in fig. 8.
SE, SL pumps without cooling jacket,
installation type S, must always be fully
submerged in the pumped liquid to be
Ex-protected.
TM05 2535 0212
Liquid levels for installation
types S and C:
S1 operation and Ex
pumps, installation type S
Installation type C

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3.3 Torques for inlet and outlet flanges
Grade 4.6 (5) galvanised steel bolts and nuts
Specified tightening torques rounded off by ± 5 Nm
Grade A2.50 (AISI 304) steel bolts and nuts
Specified tightening torques rounded off by ± 5 Nm
Nominal
diameter
Pitch circle
diameter
[mm]
Bolts
[mm]
Torques
[Nm]
Slightly oiled Well lubricated
Inlet
DN65 145 4 x M16 70 60
DN80 160 8 x M16 70 60
DN100 180 8 x M16 70 60
DN150 240 8 x M20 140 120
Outlet
DN65 145 4 x M16 70 60
DN80 160 8 x M16 70 60
DN100 180 8 x M16 70 60
DN150 240 8 x M20 120 100
Nominal
diameter
Pitch circle
diameter
[mm]
Bolts
[mm]
Torques
[Nm]
Slightly oiled Well lubricated
Inlet
DN65 145 4 x M16 - 60
DN80 160 8 x M16 - 60
DN100 180 8 x M16 - 60
DN150 240 8 x M20 - 120
Outlet
DN65 145 4 x M16 - 60
DN80 160 8 x M16 - 60
DN100 180 8 x M16 - 60
DN150 240 8 x M20 - 100
The gasket must be a full-face, reinforced
paper gasket like Klingersil C4300. If you
use a softer gasket material, reconsider
the torques.

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3.4 Electrical connection
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.
Connect the pump to an external main
switch ensuring 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.
The supply voltage and frequency are
marked on the pump nameplate. Make
sure that the motor is suitable for the
power supply available at the installation
site.
The electrical connection must be carried
out in accordance with local regulations.
Connect the pumps to a controller with a
motor protection relay with IEC trip class
10 or 15 or NEMA equivalent.
The power supply for the motor protection
circuit must be low voltage, Class 2.
Connect pumps installed in hazardous
locations to a control box with a motor
protection relay with an IEC trip class 10.
1. Do not install pump controllers, Ex
barriers or the free end of the power
cable in potentially explosive
environments.
2. The classification of the installation site
must be approved by the local
fire-fighting authorities in each
individual case.
3. On explosion-proof pumps, make sure
that an external earth conductor is
connected to the external earth
terminal on the pump using a secure
cable clamp. Clean the surface of the
external earth connection, and mount
the cable clamp.
4. The earth conductor must be minimum
AWG 12 type RHH, RHW, RHW-2 or
similar, rated for 600 V and minimum
90 °C, yellow and green.
5. Make sure that the earth conductor is
protected from corrosion.
6. Make sure that all protective equipment
has been connected correctly.
7. Float switches used in potentially
explosive environments must be
approved for this application. They
must be connected to the Grundfos
Dedicated Controls, DC, DCD or the
SLC, DLC controllers, via an
intrinsically safe barrier to ensure a
safe circuit.
If the power cable is damaged, it must be
replaced by the manufacturer, his service
agent or similarly qualified persons.
Set the motor-protective circuit breaker to
the rated current of the pump +15
%
service factor. The rated current is stated
on the pump nameplate.
If the pump has an Ex mark on the
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.
The voltage tolerance at the motor terminals must be
within - 10 %/+ 10 % of the rated voltage.
Make sure that the motor is suitable for the power
supply available at the installation site.
The motor is effectively earthed via the power cable
and pipes. The motor top cover is equipped with
connections for external earthing or an equipotential
bonding conductor.
Connect the pump to a motor-protective circuit
breaker.
The most commonly used startup methods are
these:
• Direct-on-line starting (DOL). See appendix, fig.
2.
• Star-delta starting (Y/D). See appendix, fig. 1.
• Soft start.
You can even start the pump via a frequency
converter according to the frequency converter
manufacturer's specifications. See section
3.4.2 Frequency converter operation. The selection
of suitable starting method depends on several
considerations on usage and mains supply
conditions.
3.4.1 Cable data
Standard H07RN-F
EMC
Maintenance and service work on
explosion-proof pumps must be carried out
by Grundfos or a service workshop
authorised by Grundfos.
Before installation and the first startup of
the pump, check the condition of the cable
visually to avoid short circuits.
When using star-delta starting, it is
important to keep switching transient time
to a minimum to avoid high transient
torques. We recommend that you use a
time relay with a switching time of
maximum 50 ms or according to the starter
manufacturer's specifications.
SE, SL pump range [kW] Cable type [mm2]
Outer cable diameter [mm]
Minimum bending radius [cm]
Min. Max.
9-30
7 x 4 + 5 x
1.5 21.0 23.0 12.0
7 x 6 + 5 x
1.5 23.8 26.8 13.0
7 x 10 + 5 x
1.5 24.5 27.5 14.0
SE, SL pump range [kW] Cable type [mm2]
Outer cable diameter [mm]
Minimum bending radius [cm]
Min. Max.
9-30
3 x 6 + 5 x 1 24.5 27.5 14
3 x 10 + 5 x 1 24.7 27.7 14
3 x 16 + 5 x 1 24.9 27.9 14
The minimum size of the earth conductor
must be equal to or bigger than that of the
phase conductor.
The top cover of explosion-proof pumps is
provided with an external earth terminal to
ensure the connection to earth. The
electrical installation must include an
external connection from this terminal to
earth. The earth conductor must fulfil all
electrical safety regulations in force.
Before installation and the first startup of
the pump, check the condition of the cable
visually to avoid short circuits.

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3.4.2 Frequency converter operation
In principle, all three-phase motors can be
connected to a frequency converter.
However, frequency converter operation will often
expose the motor insulation system to a heavier load
and cause the motor to be more noisy than usual
due to eddy currents caused by voltage peaks.
In addition, large motors driven via a frequency
converter will be loaded by bearing currents.
For frequency converter operation, please observe
the following:
• Requirements must be fulfilled.
• Recommendations ought to be followed.
• Consequences ought to be considered.
Requirements
• The thermal protection of the motor must be
connected.
• Peak voltage and dU/dt must be in accordance
with the table below. The values stated are
maximum values supplied to the motor terminals.
The cable influence has not been taken into
account. See the frequency converter data sheet
regarding the actual values and the cable
influence on the peak voltage and dU/dt.
• If the pump is an Ex-approved pump, check if the
Ex certificate of the specific pump allows the use
of a frequency converter.
• Set the frequency converter U/f ratio according to
the motor data.
• Local regulations or standards must be fulfilled.
Recommendations
Before installing a frequency converter, calculate the
lowest allowable frequency in the installation in order
to avoid zero flow.
• Do not reduce the motor speed to less than 30
Hz.
• Keep the flow rate above 1 m/sec.
• Let the pump run at rated speed at least once a
day in order to prevent sedimentation in the
piping system.
• Do not exceed the frequency indicated on the
nameplate as this may cause motor overload.
• Keep the power cable as short as possible. The
peak voltage will increase with the length of the
power cable. See data sheet for the frequency
converter used.
• Use input and output filters on the frequency
converter. See data sheet for the frequency
converter used.
• Use a screened power cable if there is a risk that
electrical noise may disturb other electrical
equipment. See data sheet for the frequency
converter used.
Consequences
When operating the pump via a frequency converter,
please be aware of these possible consequences:
• The locked-rotor torque will be lower. How much
lower will depend on the frequency converter
type. See the installation and operating
instructions for the frequency converter used for
information on the locked-rotor torque available.
• The working condition of bearings and shaft seal
may be affected. The possible effect will depend
on the application. The actual effect cannot be
predicted.
• The acoustic noise level may increase. See the
installation and operating instructions for the
frequency converter used for advice as to how to
reduce the acoustic noise.
Maximum repetitive
peak voltage
[V]
Maximum dU/dt UN400 V
[V/μsec.]
850 2000

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14
3.4.3 Sensors
The SE, SL pumps, 9-30 kW, can be equipped with a
variety of switches and sensors for protection. The
specification table below shows which switch and
sensor types can be used for which pump types.
The wiring diagrams of the various types of switch
and sensor appear from fig. 18 to fig. 21 in
11. Sensor overview.
Fig. 9 Switch and sensor specification table
Thermal switches
Three bimetallic thermal switches are built into the
stator windings, and a contact will open in case of
overtemperature, i.e. 150 °C; however, the motor
insulation class is class H (180 °C).
The supply voltage to the thermal switches must be
12-230 VAC.
The thermal switches are connected to the control
cable and must be connected to the safety circuit of
the separate pump controller.
Moisture switches
Non-Ex version:
One moisture switch and one leakage switch are
mounted in a non-Ex pump. The moisture switch is
placed in the top cover and the leakage switch is
placed in the chamber above the shaft seal. See
appendix, fig. 3, section C-C and E-E.
Ex version:
One moisture switch and one leakage switch are
mounted in an Ex pump. The moisture switch is
placed in the top cover and the leakage switch is
placed in the stator housing. See appendix, fig. 3,
section C-C and D-D.
All switches in both non-Ex and Ex versions are
hardwired from the pump to IO 113. If moisture or a
leakage is detected, they will break an electric
circuit. This will generate both a hardware and a
software alarm in IO 113, and the alarm relay will
open.
Moisture and leakage switches are motor protection
devices, which protect the motor from damage due
to moisture or water ingress. The switches are of a
non-reversing type and must be replaced after they
have been released.
The moisture and leakage switches are connected in
a separate circuit and to the control cable. See
appendix. They are also to be connected to the
safety circuit of the separate pump controller.
Thermistors
Thermistors are available as an accessory or as an
FPV (Factory Product Variant) option.
The thermistors can be used as motor protection
devices to monitor stator temperature instead of
thermal switches and must be connected to the
thermistor relay in the control cabinet.
The operating voltage of PTC thermistors is 2.5 - 7.5
V.
Standard pump Sensor pump, version 1 Sensor pump, version 2 Standard Ex pump Sensor pump, version 1 Ex Sensor pump, version 2 Ex
Thermal switches or
PTC ●●●●●●
Moisture switch, top ●●●●●●
Leakage switch ●●●
Leakage switch in the
stator housing ●●●
Pt1000 in stator winding ●● ●●
Pt1000 in upper bearing ●●
Pt1000 in lower bearing ●●
PVS3 vibration sensor ●●
SM 113 ●●
IO 113 ●●
The motor-protective circuit breaker of the
pump controller must include a circuit
which automatically disconnects the power
supply in case the protective circuit for the
pump is opened.
The installer or user must install an
automatic circuit breaker which
disconnects the power supply in case the
thermal switches or the moisture switches
are not working.

English (GB)
15
Checking after installation of pumps
1. Using a multimeter, check whether the circuit
resistance is < 150 Ωper thermistor.
2. Using a multimeter, check whether the insulation
between circuit and stator housing is outside the
scale (not measurable ).
3. Carry out a similar measurement at the end of
the power cable.
Pt1000 temperature sensor
The Pt1000 temperature sensor is available as an
accessory or as an FPV (Factory Product Variant)
option.
The Pt1000 sensor is primarily used for the
monitoring of bearing temperature, but it can also be
used in the stator.
In case of overheating caused by wear, lack of
lubricant, etc., the Pt1000 sensor will trip an alarm
and disconnect the power supply at a preset
temperature.
The sensor resistance is
• 1000 Ωat 0 °C
• 1385 Ωat 100 °C
• approx. 1078 Ωat room temperature.
The temperature limits are:
• 90 °C: warning for bearing temperature
• 130 °C: pump stop caused by high bearing
temperature
• 150 °C: pump stop caused by high stator
temperature.
Checking after installation of pump
1. Using a multimeter, check whether the resistance
at room temperature (20 °C) is approx. 1078 Ω.
2. Using a multimeter, check whether the insulation
between circuit and stator housing is outside the
scale (not measurable ).
3. Carry out similar measurements at the end of the
power cable.
During pump check, the Pt1000 sensor must be
connected to a recording device.
Pump vibration sensor (PVS 3)
The PVS 3 sensor monitors the vibration level of the
pump in order to protect the pump and the pipe
system against damage.
A change in the vibration level is an indication of an
abnormal situation. The reason for this can be a
clogged impeller, worn bearings, a closed outlet
valve, etc., indicating that a service inspection must
be carried out before the pump or the pipe system is
damaged.
SM 113
The SM 113 module is used for collecting and
transferring sensor data. SM 113 works together with
IO 113 through power line communication using the
Grundfos GENIbus protocol.
SM 113 collects data from the following devices:
• 3 current sensors, 4-20 mA
• 3 Pt1000 thermal sensors
• 1 PTC thermal sensor
• 1 digital input.
IO 113
The IO 113 module forms the interface between a
Grundfos sewage and wastewater pump with
analogue and digital sensors and the pump
controller. The most important sensor data are
indicated on the front panel.
One pump can be connected to IO 113.
Together with the sensors, IO 113 forms a galvanic
separation between the motor voltage in the pump
and the controller connected.
IO 113 enables the following functions:
• protecting the pump against overtemperature
• monitoring the sensors for analogue
measurement of:
– motor temperature
– pump vibrations
– stator insulation resistance
– bearing temperature
– moisture in motor
• stopping the pump in case of alarm
• remotely monitoring the pump via RS485
communication (Modbus or GENIbus).
Measurement of insulation resistance
IO 113 measures the insulation resistance between a
stator winding and earth:
• resistance above 10 MΩ= OK
• resistance between 10 MΩand 1 MΩ= warning
• resistance below 1 MΩ= alarm.
The bearing temperature monitoring
system is only available as an option.
In Ex-approved pumps, the maximum
acceptable alarm temperature in the
bearing sensors is 100 °C for the lower
bearing (shaft end) and 120 °C for the
upper bearing.



English (GB)
16
4. Starting up the product
Proceed as follows:
1. Remove the fuses or switch off the main switch.
2. Check the motor liquid level in the cooling
chamber. See section 8.1.1 Checking the motor
liquid.
3. Check that the impeller can rotate freely.
4. Check whether the monitoring units, if used, are
operating satisfactorily.
5. For pumps in a submerged installation, make
sure that the pump is submerged in the liquid.
6. For pumps in dry installation, make sure that
there is liquid in the pit from which the supply of
pumped liquid comes.
7. Open the isolating valves, if fitted.
8. Check that the system has been filled with liquid
and vented.
9. Check the setting of the level switches.
10. Start the pump and check the pump operation for
abnormal noise or vibrations.
11. After startup, the actual pump duty point must be
established as accurately as possible so that it
can be checked whether the operating conditions
are as desired.
The operation of the pump must always take place in
accordance with established routines with scheduled
checks of pump monitoring equipment and
accessories, such as valves. Make sure that the
pump and equipment settings cannot be changed by
unauthorised persons.
5. Handling and storing the product
5.1 Handling the product
Before handling the product, check the following
points:
• Lifting equipment and lifting points.
See section 3.1.1 Lifting the pump
5.2 Storing the product
For long periods of storage, six months or longer, the
pump must be protected against moisture and heat.
After a long period of storage, six months or longer,
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 seals,
O-rings and the cable entries.
Before the first startup and after a long
standstill period, make sure that the pump
has been filled with pumped liquid.
Make sure that the pump has been filled
with pumped liquid.
Pumps in dry installation must be vented
via the vent hole in the pump housing.
Dry-running is not allowed.
In case of abnormal noise or vibrations
from the pump or other pump or liquid
supply failures, stop the pump
immediately. Do not attempt to restart the
pump until the cause of the fault has been
found and the fault corrected.
The pump may only be started for a very
short period without being submerged for
checking of direction of rotation.
Leave the cable-end protectors on the
power and control cables until you start
making the electrical connection. Whether
insulated or not, the free cable end must
never be exposed to moisture or water.
Non-compliance with this may cause
damage to the motor.
If the pump is being stored for more than
two months, turn the impeller by hand at
least every two months to prevent the seal
faces of the lower mechanical shaft seal
from seizing up.
If you do not do this, the shaft seal may be
damaged when the pump is started.
If the impeller cannot be turned by hand,
contact an authorised service workshop.
For dry-installed pumps, installation types
D and H, make sure the cooling jacket is
empty before storing the pump.

English (GB)
17
6. Product introduction
6.1 Product description
Fig. 10 SE, SL pump
6.2 Applications
SE, SL pumps, 9-30 kW, are designed primarily for
pumping the following liquids:
• raw sewage with short and long fibres and
particles in municipal and industrial wastewater
systems
• sludge with dry-solids content of up to 3 % for
pumps with S-tube®impellers and up to 5 % for
pumps with SuperVortex impellers.
• surface water
• industrial wastewater with fibrous material
• domestic wastewater with toilet waste
• unscreened sewage in municipal pumping
stations or inlet pumping stations to the
wastewater treatment plant.
Secondarily, you can also use the pumps for
pumping raw water.
Depending on the application, you can use the
pumps in submerged or dry, horizontal or vertical
installations.
Maximum solids size is 80-110 mm, depending on
the pump size.
6.3 Pumped liquids
SE, SL pumps are designed for the pumping of
sewage and wastewater in a wide range of municipal
and industrial applications.
TM06 8004 4416
Pos. Description
1 Inlet
2Outlet
3 Power and control cable
4 Lifting bracket
5 Terminal box
6 Submersible motor
7Pump
1
7
6
5
3
4
2
Installation
type Description Installation and
accessories
S
Sewage pump
without cooling
jacket for
vertical,
submerged
installation
Permanent
installation on auto
coupling
Temporary
installation on ring
stand
C
Sewage pump
with cooling
jacket for
vertical,
submerged
installation
Permanent
installation on auto
coupling
Temporary
installation on ring
stand
D
Sewage pump
with cooling
jacket for
vertical, dry
installation
Permanent
installation on base
stand
Permanent
installation on base
plate
H
Sewage pump
with cooling
jacket for
horizontal, dry
installation
Permanent
installation on base
stand and bracket

English (GB)
18
7. Approvals
The explosion-proof versions have been approved
by FM Approvals according to the ATEX directive
and IEC standards.
7.1 Explanation of Ex approval
The SE, SL 9-30 kW pumps have the following explosion protection classification:
ATEX:
IECEx:
IEC 60079-0:2011, IEC 60079-1:2014
Direct-drive pump: CE 0344 II 2 G Ex h db IIB T4 Gb IP68
Pump driven by frequency converter: CE 0344 II 2 G Ex h db mb IIB T3 Gb IP68
Direct-drive pump: Ex db IIB T4 Gb Ta = -20 to +40 °C
Pump driven by frequency converter: Ex db IIB T3 Gb Ta = -20 to +40 °C
Directive or
standard Code Description
ATEX
CE
0344 =
CE marking of conformity according to the ATEX directive 2014/34/EU, Annex
X.
0344 is the number of the notified body which has certified the quality system
for ATEX.
= Marking of explosion protection
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 atmospheres caused by gases, vapours or mists.
Harmonised
European EN
and IECEx
standards
Ex = The equipment conforms to harmonised European standard.
h = Non-electrical equipment for explosive atmosphere.
db = Flame-proof enclosure according to EN/IEC 60079-1.
II = Suitable for use in explosive atmospheres (not mines).
B=
Classification of gases, see EN/IEC 60079-0, Annex A. Gas group B includes
gas group A.
T4, T3 =
T3 = maximum surface temperature of the motor is 200 °C according to
EN/IEC 60079-0.
T4 = maximum surface temperature of the motor is 135 °C according to
EN/IEC 60079-0.
IP68 = Enclosure class according to EN/IEC 60529
X=
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 the installation and operating instructions.

English (GB)
19
7.2 Potentially explosive environments
Use explosion-proof pumps for applications in
potentially explosive environments. See section
7.1 Explanation of Ex approval.
7.3 Ex certification and classification
Explosion-proof pumps have been approved by FM
Approvals in conformity with the essential health and
safety requirements relating to the design and
construction of equipment intended for use in
potentially explosive atmospheres given in Annex II
to the Council Directive 2014/34/EU(ATEX).
The pump must not be used to pump
explosive, flammable or combustible
liquids.
The classification of the installation site
must be approved by the local fire-fighting
authorities in each individual case.
Special conditions for safe use of SE, SL
pumps, 9-30 kW Ex:
1. Make sure the moisture switches and
thermal switches are connected in two
separate circuits and have separate
alarm outputs (motor stop) in case of
high humidity or high temperature in
the motor.
2. Bolts used for replacement must be
class A4-80 or A2-80 according to
EN/ISO 3506-1.
3. Consult the manufacturer if
dimensional information on the
flameproof joints is necessary.
Note: In case of repairs always use
original service parts from the
manufacturer as this will ensure correct
dimensions of flame path gaps.
4. During operation, the cooling jacket,
when fitted, must be filled with cooling
liquid.
5. The level of pumped liquid must be
controlled by level switches connected
to the motor control circuit. The
minimum level depends on the
installation type and is specified in
these installation and operating
instructions.
6. Dry running is not allowed.
7. Make sure the permanently attached
cable is suitably mechanically
protected and terminated in a suitable
terminal board.
8. Keep ethylene propylene rubber
insulated cables out of direct sunlight
during extended periods of exposure.
9. The manufacturer shall provide
guidance for the user to minimize the
risk of electrostatic discharge from the
ethylene propylene rubber insulated
cables.
10. When the motor is installed with a
converter, the installation shall be rated
for no more than a T3 temperature
code. When the motor is installed
without a converter, the installation
shall be rated for no more than a T4
temperature code.
11. This EC type examination certificate is
only for II 2G Ex db IIB T4, T3, Gb, Ta
= -20 to +40 °C, IP68. It does not cover
concept h. Concept h is manufacturer
self-declaration. The manufacturer has
sent to FM Approvals a copy of his
assessment for concept h. This has not
been reviewed and is not endorsed by
FM Approvals. It is held on file for
completeness only.

English (GB)
20
7.4 Identification
7.4.1 Nameplate
All pumps can be identified by means of the
nameplate on the motor top cover. See fig. 11.
Fig. 11 Pump nameplate
TM05 2533 4317
Pos. Description
1Approvals
2 EU explosion-proof motor Ex-symbol
3 Explosion protection certificate no.
4 Ex description
5 Ambient temperature
6 Pump type designation
7 Pump type designation (line 2)
8 Model number
9 Production code, year-week
10 Enclosure class
11 Maximum installation depth
12 Maximum head
13 Maximum flow rate
14 Number of phases
15 Maximum liquid temperature
16 Rated power input P1
17 Rated power output P2
18 Rated speed
19 Cos φ, 1/1-load
20 Rated voltage I
21 Rated current I
22 Rated voltage II
23 Rated current II
24 Frequency
25 Insulation class
26 Approval
27 Weight
CE0344
II2G
Ta = -20°C to +40°C
FM14ATEX0002X
Ex h db llB T4, T3 Gb
Type: SE1.95.150.185.4.
52H.C.EX.51D
Model: 9817485300000001
P.c. 1140 IP68 20 m
Hmax:
Motor:
P1:
Qmax:
Tmax.:
26
n:
kg
3
min
380-415
660-690 24-23
kW
V
A
50
m
21
281 m h/
3
40 c
kWP2: 18.5
1479 -1 &RVij0.79
V
A41-37
Hz Insul.class: H
Weight: 353
Made in Tatabanya. Hungary
~
98838806
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25
27
24
9
1
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2
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6
7
26
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23
DK-8850 Bjerringbro, Denmark