Grundfos SL1 Series Installation instructions

SL1, SLV
1.1 - 11 kW, 50/60 Hz DIN
Safety instructions
GRUNDFOS INSTRUCTIONS
Installation and operating instructions
in other languages for 50/60 Hz
net.grundfos.com/qr/i/96771279

English (GB)
2
English (GB) Safety instructions and other important information
Original safety instructions
These safety instructions give a quick overview of
the safety precautions to be taken in connection with
any work on this product.
Observe these safety instructions during handling,
installation, operation, maintenance, service and
repair of this product.
These safety instructions are a supplementary
document, and all safety instructions will appear
again in the relevant sections of the installation and
operating instructions.
Keep these safety instructions at the installation site
for future reference.
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
Product introduction
This booklet includes instructions for installation,
operation and maintenance of Grundfos SL1 and
SLV submersible sewage and wastewater pumps
with motors of 1.1 to 11 kW. Grundfos SL1 and SLV
sewage and wastewater pumps are designed for
pumping domestic, municipal and industrial sewage
and wastewater.
Two types of pumps are available:
• SL1 sewage pumps with S-tube impeller
• SLV sewage pumps with SuperVortex free-flow
impeller.
The pumps can be installed on an auto-coupling
system or stand freely on the bottom of a tank.
Grundfos SL1 and SLV pumps are designed with
S-tube or SuperVortex impellers to ensure reliable
and optimum operation.
The booklet also includes specific instructions for the
explosion-proof pumps.
Fig. 1 SL1 pump
Pumped liquids and intended use
SL1 and SLV pumps are designed for pumping these
liquids:
• large quantities of drainage and surface water
• domestic wastewater with discharge from toilets
• wastewater with a high content of fibres
(SuperVortex impeller)
• municipal and commercial sewage and
wastewater.
Operating conditions
SL1 and SLV pumps are suitable for the following
operating situations:
•S1 operation (continuous operation), the pump
must always be covered by the pumped liquid to
the top of the motor.
•S3 operation (intermittent operation), the pump
must always be covered by the pumped liquid up
to the top of the cable entry.
pH values
SL1 and SLV pumps in permanent installations can
be used for pumping liquids with the following pH
values:
1) For fluctuating pH values, the range is pH 4 to
14.
Liquid temperature
0-40 °C.
TM04 2648 2808
Pos. Description
1 Lifting bracket
2 Nameplate
3Oil screws
4 Outlet flange
5 Cable plug
6Clamp
7 Pump housing
1
5
2
6
4
3
7
Pump
type Material variant Material pH value
SL1/SLV Standard Cast-iron impeller and
pump housing 6.5-141)
SLV Q
Stainless-steel
impeller and
cast-iron pump
housing
6-141)

English (GB)
4
Ambient temperature
-20 to +40 °C
Density and viscosity of pumped liquid
When pumping liquids with a density and/or a
kinematic viscosity higher than that of water, use
motors with correspondingly higher outputs.
Identification
Nameplate
The nameplate states the operating data and
approvals applying to the pump. The nameplate is
fitted to the side of the motor housing close to the
cable entry.
Fix the extra nameplate supplied with the pump to
the cable end in the control cabinet.
Fig. 2 Nameplate
Explosion-proof pumps must never pump
liquids of a temperature higher than +40
°C.
For explosion-proof pumps, the ambient
temperature on the installation site must
be in the range from -20 °C to +40 °C.
For explosion-proof pumps with WIO
sensor, the ambient temperature on the
installation site must be in the range from
0-40 °C.
TM07 5414 3919
Pos. Description
1Approvals
2 Explosion protection certificate No.
3 Ex description
4 Type designation
5 Model number
6 Production code (year and week)
7 Enclosure class to IEC
8 Maximum installation depth
9 Maximum head
10 Maximum flow rate
11 Number of phases
12 Maximum liquid temperature
13 Rated input power
14 Shaft power
15 Rated speed
16 Power factor
17 Rated voltage, D
18 Rated current, D
19 Rated voltage, Y
20 Rated current, Y
21 Frequency
22 Insulation class
23 Construction Products Regulation standard
24 Weight without cable
25 Country of production
Type: SLV.80.80.110.EX.2.51D
Model: 9687208500000001
P.c. 0845 IP68
44.9 90
40
12.5 11.0
2950 0.89
50
0197
180
22.4-20.8
380-415
3 ~
20 m
Hmax:
Motor:
P1:
Qmax:
Tmax.:
n:
kg
min
kW
V
A
mmh/
3
C
kW
P2:
-1
V
A
Hz Insul.class:
Weight:EN 12050-1
Made in Tatabanya, Hungary
98808079
96771279
3
5
6
910
12
8
7
11
17
15
19
13 14
16
22
24
21
23
4
1
2
18
20
25
H
CE0344 II2G
KEMA 08ATEX 0125X
Ex db h llB T4,T3 Gb
&RVij
DK-8850 Bjerringbro, Denmark

English (GB)
5
Type key
The pump can be identified by the type designation
stated on the pump nameplate. Example:
SLV.80.80.40.A.Ex.4.50.0D.Q
* Maximum frequency in case of frequency
converter operation
Code Designation Explanation
SL Pump type Grundfos wastewater
pump
1Impeller type S-tube impeller
V SuperVortex impeller
50
Free spherical
passage [mm] Maximum solids size
65
80
100
65
Pump outlet
[mm] Nominal diameter of pump outlet
80
100
150
40 Power [kW] Output power P2/10
Blank Sensor version Standard version
A Sensor version
Blank Pump version
Non-explosion-proof
version
Ex Explosion-proof version
2Number of
poles
2-pole
4 4-pole
50
60 Frequency [Hz]* 50 Hz 60 Hz
0B
Voltage and
starting method
3 x 400-415 V,
direct-on-line
connection
0D 3 x 380-415 V, direct-on-line
connection
1D 3 x 380-415 V,
star-delta connection
0E 3 x 220-240 V, direct-on-line
connection
1E 3 x 220-240 V,
star-delta connection
0F 3 x 220-277 V,
star-delta connection
0G 3 x 380-480 V,
star-delta connection
1F 3 x 220-277 V, delta / 380-480 V star
connection
1G 3 x 380-480 V,
star-delta connection
Blank
Generation
1st generation
A 2nd generation
B 3rd generation
C 4th generation
Blank
Pump materials
Cast-iron impeller,
pump housing and
motor housing
QStainless-steel impeller, cast-iron pump housing
and motor housing
Blank Customisation Pump in standard range
Z Custom-built pump
Code Designation Explanation

English (GB)
6
Approvals
SL1 and SLV pumps have been tested by Dekra /
KEMA. The explosion-proof version hold two
examination certificates:
• ATEX(EU): KEMA08ATEX0125X
• IECEx: IECEx KEM08.0039X
Both certificates have been issued by Dekra.
Approval standards
ATEX:
IECEx:
IEC 60079-0:2017, IEC 60079-1:2014, IEC
60079-7:2017, IEC 60079-18:2017
The standard variants are approved by TÜV LGA
(notified body under the Construction Products
Directive) according to EN 12050-1 or EN 12050-2
as specified on the pump nameplate.
Australia and New Zealand
Explosion-proof variants for Australia and New
Zealand are approved Ex db IIB T3/T4 Gb (without
WIO sensor) or Ex db eb mb IIB T3/T4 Gb (with WIO
sensor).
Transporting the product
Handling and lifting the product
Fig. 3 Lifting bracket
Direct-drive pump without
sensor: CE 0344 II 2 G Ex db h IIB T4 Gb
Direct-drive pump with
sensor: CE 0344 II 2 G Ex db eb h mb IIB T4 Gb
Pump driven by frequency
converter without sensor: CE 0344 II 2 G Ex db h IIB T3 Gb
Pump driven by frequency
converter with sensor: CE 0344 II 2 G Ex db eb h mb IIB T3 Gb
Pump without sensor: Ex db IIB T3, T4 Gb
Pump with sensor: Ex db eb mb IIB T3,
T4 Gb
CAUTION
Crushing hazard
Minor or moderate
personal injury
- Make sure the pump
cannot roll or fall over.
WARNING
Crushing hazard
Death or serious
personal injury
- Always lift the pump by
its lifting bracket or by
a forklift truck if the
pump is fixed on a
pallet. Never lift the
pump by the power
cable, hose or pipe.
TM06 3920 1215
Lifting bracket

English (GB)
7
Safety
Potentially explosive environments
Pump installation in
tanks must be carried
out by specially trained
persons.
Work in or near tanks
must be carried out
according to local
regulations.
Persons must not work in the installation
area when the atmosphere is potentially
explosive.
WARNING
Crushing hazard
Death or serious
personal injury
- Make sure that the
lifting bracket is
tightened before lifting
the pump.
Carelessness during
lifting or transport may
cause injury to persons
or damage to the
pump.
WARNING
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. It must
be possible to lock the
main switch in position
0. The electrical
connection must
comply with local
regulations.
SL1 and SLV pumps must under no
circumstances be used to pump explosive,
flammable or combustible liquids.
The classification of the installation site
must be approved by the local fire-fighting
authorities.

English (GB)
8
Mechanical installation
Special conditions for safe use of SL1 and
SLV explosion-proof pumps:
1. Make sure the moisture switch and
thermal switches are connected in the
same circuit but 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 A2-70 or better according to
EN/ISO 3506-1.
3. Contact the manufacturer for
information on the dimensions of the
flameproof joints.
4. The level of pumped liquid must be
controlled by two 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.
5. Make sure the permanently attached
cable is suitably mechanically
protected and terminated in a suitable
terminal board placed outside the
potentially explosive area.
6. The sewage pumps have an ambient
temperature range of -20 °C to +40 °C
and a maximum process temperature
of +40 °C. The minimum ambient
temperature for a pump with a
water-in-oil sensor is 0 °C.
7. The thermal protection in the stator
windings has a nominal switch
temperature of 150 °C and must
guarantee the disconnection of the
power supply. The power supply must
be reset manually.
8. The control unit must protect the WIO
sensor against short circuit current of
the supply to which it is connected. The
maximum current from the control unit
must be limited to 350 mA.
9. In case of frequency converter usage,
the maximum surface temperature of
the pump can be 200 °C.
10. The WIO sensor is intended for use
only with a galvanically isolated circuit.
11. The lock nut of the cable connector
must only be replaced with an identical
one.
12. The WIO sensor must be connected
according to these installation
instructions.
EX pumps are equipped with a WIO
sensor optionally.
Compliance with the standard EN
60079-14 is a customer responsibility.
WARNING
Body injury
Death or serious
personal injury
- Pump installation in
tanks must be carried
out by specially trained
persons. Work in or
near tanks must be
carried out according
to local regulations.
Persons must not work in the installation
area when the atmosphere is potentially
explosive.
WARNING
Crushing hazard
Death or serious
personal injury
- During installation,
always support the
pump by lifting chains
or place it in horizontal
position to secure
stability.

English (GB)
9
WARNING
Electric shock
Death or serious
personal injury
- Before beginning the
installation, switch off
the power supply and
lock the main switch in
position 0.
- Make sure that the
power supply cannot
be switched on
unintentionally.
- Any external voltage
connected to the pump
must be switched off
before working on the
pump.
WARNING
Crushing of hands
Death or serious
personal injury
- Do not put your hands
or any tool into the
pump inlet or outlet
port after the pump is
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 switched on
unintentionally. Make
sure that all the
rotating parts have
stopped moving.
CAUTION
Crushing hazard
Minor or moderate
personal injury
- Use the lifting bracket
only for lifting the
pump. Do not use it to
hold the pump in
operation.

English (GB)
10
Installation types
Fig. 4 Submerged installation on auto coupling
SL1 and SLV pumps are designed for two installation
types:
• submerged installation on auto coupling
• free-standing submerged installation on ring
stand.
Fig. 5 Free-standing submerged installation on
ring stand
Torques for inlet and outlet flanges
Grade 4.6 (5) galvanised steel screws and nuts
TM04 2650 2808
Before beginning installation procedures,
make sure that the atmosphere in the tank
is not potentially explosive.
Inspect the oil level and condition every
3000 operating hours or at least once a
year.
When the pump is new or after
replacement of the shaft seal, check the oil
level and water content after one week of
operation.
TM04 2651 2808
DN DC
[mm] Screws
Specified torques
rounded off by ± 5
[Nm]
Slightly
oiled Well lubricated
DN 65 145 4 x M16 70 60
DN 80 160 8 x M16 70 60
DN 100 180 8 x M16 70 60
DN 150 240 8 x M20 140 120
DN DC
[mm] Screws
Specified torques
rounded off by ± 5
[Nm]
Slightly
oiled Well lubricated
DN 65 145 4 x M16 - 60
DN 80 160 8 x M16 - 60
DN 100 180 8 x M16 - 60
DN 150 240 8 x M20 - 120