Grundfos SE User manual

SE and SL, 9-30 kW
50/60 Hz, DIN, Generation A, all languages
Installation and operating instructions
QR98142266
Installation and operating instructions
(all available languages)
http://net.grundfos.com/qr/i/98142266
GRUNDFOS INSTRUCTIONS

SE and SL, 9-30 kW
English (GB)
Installation and operating instructions ..................................5
Български (BG)
Упътване за монтаж и експлоатация.................................32
Čeština (CZ)
Montážní a provozní návod ........................................63
Deutsch (DE)
Montage- und Betriebsanleitung .....................................90
Dansk (DK)
Monterings- og driftsinstruktion .....................................121
Eesti (EE)
Paigaldus- ja kasutusjuhend.......................................148
Español (ES)
Instrucciones de instalación y funcionamiento...........................175
Suomi (FI)
Asennus- ja käyttöohjeet .........................................206
Français (FR)
Notice d'installation et de fonctionnement..............................233
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας................................262
Hrvatski (HR)
Montažne i pogonske upute .......................................293
Magyar (HU)
Telepítési és üzemeltetési utasítás ..................................320
Italiano (IT)
Istruzioni di installazione e funzionamento .............................349
Lietuviškai (LT)
Įrengimo ir naudojimo instrukcija ....................................378
Latviešu (LV)
Uzstādīšanas un ekspluatācijas instrukcija .............................405
Nederlands (NL)
Installatie- en bedieningsinstructies ..................................433
Polski (PL)
Instrukcja montażu i eksploatacji....................................462
3
Table of contents

Português (PT)
Instruções de instalação e funcionamento .............................492
Română (RO)
Instrucţiuni de instalare şi utilizare...................................521
Srpski (RS)
Uputstvo za instalaciju i rad .......................................550
Svenska (SE)
Monterings- och driftsinstruktion ....................................577
Slovenčina (SK)
Návod na montáž a prevádzku .....................................603
Türkçe (TR)
Montaj ve kullanım kılavuzu .......................................630
Українська (UA)
Інструкції з монтажу та експлуатації ................................657
中文 (CN)
安装和使用说明书 ..............................................688
Norsk (NO)
Installasjons- og driftsinstruksjoner ..................................713
(AR) ةيبرعلا
    .............................................740
繁體中文 (TW)
安裝操作手冊 .................................................765
Appendix A..................................................790
4SE and SL, 9-30 kW
Table of contents

English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information ............. 5
1.1 Hazard statements .............. 5
1.2 Notes ..................... 5
1.3 Target group.................. 6
2. Product introduction ............ 6
2.1 Product description .............. 6
2.2 Intended use ................. 7
2.3 Pumped liquids ................ 7
2.4 Identification.................. 7
2.5 Approvals ................... 9
3. Receiving the product............11
3.1 Transporting the product ...........11
3.2 Inspecting the product ............11
3.3 Lifting the product ...............11
4. Mechanical installation ...........13
4.1 Foundation ..................13
4.2 Mounting the product .............14
4.3 Permanent, vertical, submerged
installation on auto coupling .........14
4.4 Permanent, vertical or horizontal, dry
installation...................15
4.5 Temporary, vertical, submerged
installation in a pit ...............16
4.6 Level of pumped liquid ............16
4.7 Torques for inlet and outlet flanges......18
5. Electrical connection ............19
5.1 Frequency converter operation ........20
5.2 Cable data...................20
5.3 Sensors ....................21
6. Startup ....................23
7. Storing the product .............24
8. Servicing and maintaining the product ..24
8.1 Motor liquid check and change ........25
8.2 Inspecting and adjusting the impeller
clearance ...................26
8.3 Maintaining the explosion-proof SE, SL
pumps .....................27
8.4 Contaminated pumps .............28
9. Troubleshooting ...............29
10. Technical data ................31
11. Disposing of the product ..........31
1. General information
Read this document before you install the
product. Installation and operation must
comply with local regulations and accepted
codes of good practice.
1.1 Hazard statements
The symbols and hazard statements below may
appear in Grundfos installation and operating
instructions, safety instructions and service
instructions.
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.
The hazard statements are structured in the following
way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
• Action to avoid the hazard.
1.2 Notes
The symbols and notes below may appear in
Grundfos installation and operating instructions,
safety instructions and service instructions.
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.
5
English (GB)

If these instructions are not observed, it
may result in malfunction or damage to the
equipment.
Tips and advice that make the work easier.
1.3 Target group
These installation and operating instructions are
intended for professional installers.
2. Product introduction
2.1 Product description
The 9-30 kW SE and SL pumps are a range of
SuperVortex and S-tube® impeller pumps specifically
designed for pumping sewage and wastewater in a
wide range of municipal, private and industrial
applications.
4
3
5
6
7
1
2
TM075116
SE, SL pump
Pos. Description
1 Inlet
2 Outlet
3 Power and control cable
4 Lifting bracket
5 Terminal box
6 Submersible motor
7 Pump
6
English (GB)

2.2 Intended use
These pumps are designed for pumping sewage and
wastewater in a wide range of municipal, private and
industrial applications.
2.3 Pumped liquids
The pumps are designed for pumping:
• raw sewage with short and long fibres and
particles in municipal and industrial wastewater
systems
• sludge with dry solids content 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 in wastewater
treatment plants
• raw water.
Depending on the application, the pumps can be
used in submerged or dry, horizontal or vertical
installations.
2.4 Identification
2.4.1 Nameplate
The pumps can be identified by the nameplate on the
motor top cover.
CE 0344
II 2 G
Ta = -20°C to +40°C
FM14ATEX0002X
Ex h db llB T4,T3 Gb
Type: SE1.110.200.130.4.
52M.H.Q.EX.51D
Model: 9941200400000001
P.c. 2012 IP68 20 m
Hmax:
Motor:
P1:
Qmax: 371
Tmax.: 40°C
16 m
n:
3
380-415 V
660-690 V 16-15 A
50 Hz
14.8 kW
m h/
3
P2: 13 kW
1483 rpm Cosφ: 0.83
28-25 A
Insul.class: H
Weight: 443 kg
Made in Tatabánya, Hungary
~
99647171
4
8
12 13
15
11
10
14
20
18
22
16 17
19
25
27
24
9
1
5
2
3
6
7
26
21
23
DK-8850 Bjerringbro, Denmark
TM052533
Nameplate example for Ex-proof pump
Pos. Description
1 Approvals
2 Marking of explosion protection
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 and 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, delta connection
21 Rated current, delta connection
22 Rated voltage, star connection
23 Rated current, star connection
24 Frequency
25 Insulation class
26 Approvals
27 Weight
7
English (GB)

2.4.2 Type key
Example: SL1.110.200.245.4.52.M.S.EX.6.1G.A
Code Explanation Designation
SE Sewage pump with
cooling jacket Pump type
SL Sewage pump without
cooling jacket
[ ] Open S-tube® impeller
(semi-open)
Impeller type
1Closed single-channel
S-tube® impeller
2Closed two-channel
S-tube® impeller
VSuperVortex (free-flow)
impeller
110 Maximum solids size Pump free passage
[mm]
200 Pump outlet nominal
diameter Pump outlet [mm]
245 24.5 kW: P2 / 10 Power [kW]
[ ] Standard pump or
standard Ex pump
Sensor version
A
Sensor version 1 or
sensor version 1, Ex
pump
B
Sensor version 2 or
sensor version 2, Ex
pump
2 2-pole motor
Number of poles4 4-pole motor
6 6-pole motor
52 Frame size of the
pump Frame size
S Super-high pressure
Pressure range
H High pressure
M Medium pressure
L Low pressure
E Extra-low pressure
Code Explanation Designation
S
Sewage pump without
cooling jacket for
vertical, submerged
installation (SL)
Installation type
C
Sewage pump with
cooling jacket for
vertical, submerged
installation (SE)
D
Sewage pump with
cooling jacket for
vertical, dry installation
(SE)
H
Sewage pump with
cooling jacket for
horizontal, dry
installation (SE)
[ ]
Cast iron pump
housing, cast iron
impeller, cast iron
suction cover, cast iron
motor housing
Material code for
pump housing,
impeller, suction
cover and motor
housing
Q
Cast iron pump
housing, stainless-steel
impeller, cast iron
suction cover, cast iron
motor housing
W
Cast iron pump
housing, heavy-duty
wear-resistant impeller
and suction cover, cast
iron motor housing
NPump without ATEX
approval Pump version
EX Pump with ATEX
approval
5 50 Hz Frequency
6 60 Hz
1D 3 × 380-415D,
660-690Y (Standard)
Voltage for 50 Hz
1E 3 × 220-240D,
380-415Y
1N 3 × 500-550D
1F 3 × 220-277D,
380-480Y
Voltage for 60 Hz
1G* 3 × 380-480D,
660-690Y (Standard)
1M 3 × 500-600D
11** 3 × 460D (Standard)
15** 3 × 380D, 660Y
8
English (GB)

Code Explanation Designation
[ ] Thermal switches Thermal protection
T PTC thermistor
[ ] 1st generation Generation code
A 2nd generation
Z Custom-built products Customisation
*Only for 2- and 4-pole motors.
**Only for 6-pole motors.
2.5 Approvals
The explosion-proof versions have been approved by FM Approvals according to the ATEX directive and IEC
standards.
2.5.1 Explanation of Ex approval
The SE, SL 9-30 kW pumps have the following
explosion protection classification:
ATEX
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 IIB T3 Gb IP68
ICEX
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
IEC 60079-0:2017, IEC 60079-1:2014
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.
= The equipment conforms tothe harmonised European standard.
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.
9
English (GB)

Directive or
standard Code Description
Harmonised
European EN
and IECEx
standards
Ex = Marking of explosion protection.
db = Flame proof enclosure according to EN/IEC 60079-1.
h = Non-electrical equipment for explosive atmosphere.
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.
Gb = Equipment for explosive gas with "high" level of protection.
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 described in the
certificate and the installation and operating instructions.
*When operated by a frequency converter.
2.5.2 Ex certification and classification
Explosion-proof pumps are 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).
2.5.3 Potentially explosive environments
Use explosion-proof pumps for applications in
potentially explosive environments.
The pump must not be used to pump
explosive, flammable or combustible
liquids.
The classification of the installation site
must comply with the local regulations.
Special conditions for safe use of
explosion-proof pumps:
1. Make sure the moisture- 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. Contact the manufacturer if
dimensional information on the
flameproof joints is necessary.
4. During operation, the cooling jacket, if
fitted, must be filled with cooling liquid.
5. The level of the pumped liquid must be
controlled by level switches connected
to the motor control circuit.
6. Dry running is not allowed.
7. Make sure the cable is mechanically
protected, attached to the switchboard
and the cable bonding cannot slip out.
8. The sewage pumps have an ambient
temperature range of -20 to +40 °C
and a maximum operating temperature
of +40 °C.
9. Avoid exposing the ethylene-propylene
rubber insulated cables to direct
sunlight.
10. Dry-installed pumps often have a
higher temperature in the cable entries
than submerged pumps. This may
reduce the lifetime of the Ex-protection.
According to IEC/EN 60079-14, it is a
10
English (GB)

user responsibility to regularly inspect
the condition of the permanently
attached cables and cable entries for
any visual damage, cracks or
embrittlement caused by rubber aging.
11. The thermal protector in the stator
windings must have a rated switch
temperature of 150 °C and it ensures
the disconnection of the power supply.
Resetting must be carried out
manually.
12. To avoid electrostatic discharge, clean
the cables and the painted parts of the
pump with a wet fabric.
13. When the pump is operated by a
frequency converter, the installation
must be rated up to T3 temperature
class. When the pump is operated
without a frequency converter, the
installation must be rated up to T4
temperature class.
14. 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.
3. Receiving the product
The pump is supplied from the factory in a proper
packaging in which it should remain until installation.
Make sure that the pump cannot roll or fall over.
3.1 Transporting the product
All lifting equipment must be rated for the purpose
and checked for damage before lifting the pump. The
lifting equipment rating must not be exceeded. The
pump weight is stated on the nameplate.
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
‐Use a service stand to support DN 100
and DN 150 (pressure ranges S and H)
in vertical position.
WARNING
Crushing hazard
Death or serious personal injury
‐Always lift the pump by its lifting
bracket or use a forklift.
DANGER
Electric shock
Death or serious personal injury
‐Never lift the pump by the power cable,
hose or pipe.
Leave the cable-end protectors and control
cables on the power supply until making
the electrical connection. Whether
insulated or not, the free cable end must
never be exposed to moisture.
3.2 Inspecting the product
During periods of storage, protect the pump against
moisture and heat.
Transportation and storage temperature:
-20 to +60 °C.
If the pump is not in operation or is being
stored for more than a month, turn the
impeller once a month.
WARNING
Crushing hazard
Death or serious personal injury
‐Do not turn the impeller by hand.
Always use an appropriate tool.
On pumps fitted with guide vane, be
careful not to damage the guide vane
when turning the impeller.
After a period of storage, inspect the pump before
putting it into operation. Make sure that the impeller
can rotate freely. Pay attention to the condition of the
shaft seals, O-rings and the cable entries.
3.3 Lifting the product
DANGER
Crushing hazard
Death or serious personal injury
‐Make sure the lifting bracket or lifting
eye bolts are tightened before lifting
the pump. Torque: 70 ± 4 Nm
11
English (GB)

DANGER
Crushing hazard
Death or serious personal injury
‐Pumps with installation type S, C and
pressure range S, H are delivered with
a mounted lifting eye and an additional
shackle, which must be used to attach
the hook and the chain correctly.
When lifting the pump, use the right lifting
point to keep the pump balanced for
proper installation. The table below shows
the correct lifting point.
Installation
type
Pressure
range
Lifting
bracket
assembly
Lifting point
S, C
S, H
with lifting
eye and
shackle
Pos. 2, see
fig. Lifting
points,
vertical
installation
M, L, E no lifting
eye
Pos. 1, see
fig. Lifting
points,
vertical
installation
DS, H, M, L,
E
no lifting
eye
Pos. 1, see
fig. Lifting
points,
vertical
installation
HS, H, M, L,
E
no lifting
eye
See fig.
Lifting
points,
horizontal
installation
The following installation types must be lifted at the
lifting bracket:
• types S with pressure range M, L and E
• types C with pressure range M, L and E
• type D.
See fig. Lifting points, vertical installation, pos. 1.
The following installation types must be lifted at the
lifting eye with shackle (at the back of the lifting
bracket):
• types S with pressure range S and H
• types C with pressure range S and H.
See fig. Lifting points, vertical installation, pos. 2.
Installation type H can be lifted by a hole in the flange
and the middle lifting point. See fig. Lifting points,
horizontal installation.
1
2
TM075107
Lifting points, vertical installation
TM075108
Lifting points, horizontal installation
12
English (GB)

4. Mechanical installation
Fit the extra nameplate supplied with the pump at the
installation site.
Observe all safety regulations at the installation site.
Make sure there is adequate fresh air supply in the
pit.
DANGER
Electric shock
Death or serious personal injury
‐Before starting any work on the
product, make sure that the power
supply is switched off and it cannot be
switched on unintentionally.
DANGER
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.
CAUTION
Crushing hazard
Minor or moderate personal injury
‐Do not put your hands or any tool into
the pump inlet or outlet after the pump
has been connected to the power
supply, unless the main switch has
been locked in position 0.
‐Make sure that the power supply
cannot be switched on unintentionally.
The free end of the cable must not be
submerged as water may penetrate 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. Use loose flanges to
ease the installation and to avoid pipe
tension at the flanges.
4.1 Foundation
Foundations for pumps above 15 kW
The rotating equipment generates vibrations when an
impeller or rotor is turning at high speed. Proper
installation and anchorage of the pumps and
accessories are crucial to limit vibrations and achieve
reliable installation:
• The foundation and concrete must support the
weight of the pump including accessories, the
liquid passing through the pump and the forces
generated by the pump.
• The mass of the concrete foundation must be
minimum 3-5 times heavier than the weight of the
supported equipment and must have sufficient
rigidity to withstand the axial, transverse, and
torsional loads generated by the pump.
• The foundation must be 15 cm wider than the
baseplate for pumps up to 350 kW and 25 cm
wider for larger pumps.
• The concrete used in the foundation must have a
minimum tensile strength of 250 N/cm2.
• Always use epoxy grout to fasten the baseplate to
the foundation.
Pumps with DN 250 or DN 300 flanges
must be installed on a concrete
foundation.
Dry, vertical installation on vertical base stand (left)
and on concrete foundation (right)
TM075110
TM075111
13
English (GB)

4.2 Mounting the product
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
baseplate
H
Sewage pump
with cooling
jacket for
horizontal, dry
installation
Permanent
installation on base
stand for horizontal
installation
4.3 Permanent, vertical, submerged
installation on auto coupling
Pumps for permanent, vertical installation in a pit can
be installed on a stationary auto-coupling unit and
operated completely or partially submerged in the
pumped liquid.
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. Use loose flanges to
ease the installation and to avoid pipe
tension at the flanges.
Do not use elastic elements or bellows to
connect 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.
The guide rails must not have any axial
play as this may cause noise during
operation.
Proceed as follows:
1. Drill mounting holes for the guide-rail bracket on
the inside of the pit and fasten it provisionally with
two screws.
2. Place the auto-coupling base unit on the bottom
of the pit. If the bottom is uneven, the auto-
coupling base unit must be supported. Use a
plumb line to establish the correct positioning.
Fasten the auto coupling with expansion bolts.
3. Connect the outlet pipe in accordance with the
generally accepted procedures. Avoid 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 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 before lowering the pump into
the pit.
7. Fit the guide shoe to the pump.
8. Slide the guide shoe along the guide-rails and
lower the pump into the pit by a chain secured to
the lifting bracket (fig. Lowering the pump along
the guide rails). When the pump reaches the auto-
coupling base unit, pull the lifting chain towards
the guide rail several times to shake off any
foreign substances (fig. Connecting the pump to
auto coupling). When the chain is unstrained, the
pump connects automatically to the auto-coupling
unit (fig.Submerged installation on auto coupling).
9. Hang up the end of the chain on a suitable hook
at the top of the pit. Make sure that the chain is
straight but not strained.
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- and the control cables, if any.
The free end of the cable must not be
submerged as water may penetrate into
the motor.
14
English (GB)

TM075949
Lowering the pump along the guide rails
TM075952
Connecting the pump to auto coupling
TM075109
Submerged installation on auto coupling
Pull-out strength for anchor bolts
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.
4.4 Permanent, vertical or horizontal, dry
installation
Use isolating valves on either side of the
pump to facilitate service on it.
15
English (GB)

TM075112
Dry, horizontal installation on horizontal base stand
Pumps in dry installation are installed permanently in
a pump room.
The pump motor is enclosed and watertight.
Proceed as follows:
1. Mark and drill mounting holes in the concrete floor
or 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- and the control cables, if any.
Fasten the pump to the inlet and outlet pipes with
flange connections.
Pull-out strength for anchor bolts
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.
In horizontal installations, use a reducer
between the inlet pipe and the pump. The
reducer must be eccentric and has to be
installed the way its straight edge is
pointing upwards. Therefore the
accumulation of air in the inlet pipe and the
risk of operation disturbance are
eliminated.
1
2
TM075114
Eccentric reducer in horizontal installation
Pos Description
1 Eccentric reducer
2 Minimum level: 0.2 m
4.5 Temporary, vertical, submerged
installation in a pit
Use the chain to move the pump.
Proceed as follows:
1. Fit the ring stand to the pump inlet flange.
2. Fit a 90 ° elbow to the pump outlet and connect
the outlet pipe or hose. If a hose is used, make
sure that the hose does not buckle and the inside
diameter matches the outlet diameter.
3. Lower the pump into the liquid by a chain secured
to the lifting bracket of the pump. 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, so 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 and control cables, if any.
4.6 Level of pumped liquid
Do not let the pump 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 the pumped liquid must be
controlled by level switches connected to
the motor control circuit.
16
English (GB)

Explosion-proof SL pumps (without cooling
jacket), installation type S, must always be
completely submerged in the pumped
liquid to the top of the motor. See fig.
Liquid levels, level 1.
For explosion-proof SE pumps (with
cooling jacket), installation type C, the
pump housing must always be completely
covered by the pumped liquid. See fig.
Liquid levels, level 2.
For a short period, the pump may be used
to pump down the liquid level to remove
the float layer. For explosion-proof pumps,
do not let it go below the stop levels shown
in fig. Liquid levels.
To ensure adequate motor cooling, the following
minimum requirements must be met:
•Installation type S: the pump must be completely
submerged in the pumped liquid to the top of the
motor. See fig. Liquid levels, level 1.
•Installation type C: the pump housing must be
completely covered by the pumped liquid. See fig.
Liquid levels, level 2.
1
2
TM075115
Liquid levels
•Installation types D and H:there are no special
requirements for the level of the pumped liquid.
17
English (GB)

4.7 Torques for inlet and outlet flanges
Grade 4.6 (5) galvanised steel bolts and nuts
Nominal
diameter
Pitch circle
diameter
[mm]
Bolts
[mm]
Torques
[Nm]
Slightly oiled Well lubricated
Inlet
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
Outlet
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 120 100
Specified tightening torques rounded off by ± 5 Nm Grade A2.50 (AISI 304) steel bolts and nuts
Nominal diameter
Pitch circle
diameter
[mm]
Bolts
[mm]
Torques
[Nm]
Slightly oiled Well lubricated
Inlet
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
Outlet
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 - 100
Specified tightening torques rounded off by ± 5 Nm
The gasket must be a full-face, reinforced
paper gasket, such as Klingersil C4300.
When using a softer gasket material,
reconsider the torques.
18
English (GB)

5. Electrical connection
DANGER
Electric shock
Death or serious personal injury
‐Before starting any work on the
product, make sure that the power
supply is switched off and that it cannot
be switched on unintentionally.
DANGER
Electric shock
Death or serious personal injury
‐The pump must be grounded. Before
connecting the pump to the voltage
supply, make sure the connection to
ground complies withthe local
regulations.
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 nameplate. Make sure that
the motor is suitable for the power supply
at the installation site.
The electrical connection must comply with
the 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 comply with the local rules.
3. On explosion-proof pumps, make sure
that an external ground conductor is
connected to the external ground
terminal on the pump by a secure
cable clamp. Clean the surface of the
external ground connection and mount
the cable clamp.
4. The ground 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 ground 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, by an
intrinsically safe barrier to ensure a
safe circuit.
If the power cable is damaged, it must be
replaced by the manufacturer or his
service agent.
Connect the pump to a motor-protective circuit
breaker.
Set the motor-protective circuit breaker to
the rated current of the pump +15 %
service factor. The rated current is stated
on the nameplate.
The supply voltage and frequency are marked on the
nameplate.
The voltage tolerance at the motor terminals must be
within ± 10 % of the rated voltage.
The motor is effectively grounded with the power
cable and pipes. The motor top cover is equipped
with connections for external grounding or an
equipotential bonding conductor.
Maintenance and service work on
explosion-proof pumps must be carried out
by Grundfos or an authorised service
workshop.
19
English (GB)

Before installation and the first startup of
the pump, check the condition of the cable
to avoid short circuits.
The most commonly used startup methods are the
following:
• Direct-on-line starting (DOL). See Appendix, fig.
4.3.
• Star-delta starting (Y/D). See Appendix, fig. 4.3.
• Soft start.
The selection of suitable starting method depends on
several considerations on usage and mains supply
conditions.
When using star-delta start, it is important
to keep switching transient time to a
minimum to avoid high transient torques.
Use a time relay with a switching time of
maximum 50 ms or according to the
manufacturer's specifications.
The pump can be operated with a frequency
converter according to the specifications of the
manufacturer.
5.1 Frequency converter operation
If the motor is operated by a frequency
converter, the temperature class of the
explosion-proof pumps must be T3.
In principle, all three-phase motors can be connected
to a frequency converter.
However, frequency converter operation often
exposes the motor insulation system to a heavier load
and may cause the motor to be more noisy due to
eddy currents caused by voltage peaks.
In addition, large motors driven with a frequency
converter are loaded by bearing currents.
For frequency converter operation, observe the
following:
• 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 is not taken into account. See
the frequency converter data sheet regarding the
actual values and the cable influence on the peak
voltage and dU/dt.
• The minimum switching frequency is 2 KHz. The
switching frequency can be variable.
• 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.
• Before installing a frequency converter, calculate
the lowest frequency allowed in the installation to
avoid zero flow.
• Do not reduce the motor speed to less than 50 %.
• Keep the flow rate above 1 m/sec.
• Let the pump run at rated speed at least once a
day to prevent sedimentation in the pipe network.
• 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 increases with the length of the
power cable.
• Use input and output filters on the frequency
converter.
• Use a screened power cable if there is a risk that
electrical noise may disturb other electrical
equipment.
• Set the frequency converter for constant-torque
operation. Pulse width modulation should be
used.
When operating the pump by a frequency converter,
consider the following:
• The locked-rotor torque can be lower depending
on the type of the frequency converter.
• The noise level may increase. See the installation
and operating instructions for the selected
frequency converter.
Maximum repetitive
peak voltage
[V]
Maximum dU/dt UN 400 V
[V/μ sec.]
850 2000
Frequency converter use may reduce the
lifespan of the bearings and the shaft seal,
depending on the operating mode and
other circumstances.
For more information about the frequency converter
operation, see the data sheet and the installation and
operating instructions for the selected frequency
converter.
5.2 Cable data
Standard H07RN-F
Cable type
Outer cable
diameter
[mm]
Minimum
bending
radius
[mm2]min. max. [mm]
7 x 4 + 5 x 1.5 21.2 22.8 70
7 x 6 + 5 x 1.5 24.5 26.1 80
7 x 10 + 5 x 1.5 25.2 26.8 110
20
English (GB)