Grundfos SL User manual

SL pumps, range 56
18-41 kW, 50 Hz
Installation and operating instructions
QR92777903
Installation and operating instructions
(all available languages)
http://net.grundfos.com/qr/i/92777903
GRUNDFOS INSTRUCTIONS

SL pumps, range 56
English (GB)
Installation and operating instructions ..................................5
Български (BG)
Упътване за монтаж и експлоатация.................................34
Čeština (CZ)
Montážní a provozní návod ........................................64
Deutsch (DE)
Montage- und Betriebsanleitung .....................................93
Dansk (DK)
Monterings- og driftsinstruktion .....................................123
Eesti (EE)
Paigaldus- ja kasutusjuhend.......................................152
Español (ES)
Instrucciones de instalación y funcionamiento...........................181
Suomi (FI)
Asennus- ja käyttöohjeet .........................................211
Français (FR)
Notice d'installation et de fonctionnement..............................240
Ελληνικά (GR)
Οδηγίες εγκατάστασης και λειτουργίας................................270
Hrvatski (HR)
Montažne i pogonske upute .......................................300
Magyar (HU)
Telepítési és üzemeltetési utasítás ..................................329
Italiano (IT)
Istruzioni di installazione e funzionamento .............................358
Lietuviškai (LT)
Įrengimo ir naudojimo instrukcija ....................................387
Latviešu (LV)
Uzstādīšanas un ekspluatācijas instrukcija .............................416
Nederlands (NL)
Installatie- en bedieningsinstructies ..................................445
Polski (PL)
Instrukcja montażu i eksploatacji....................................474
3
Table of contents

Português (PT)
Instruções de instalação e funcionamento .............................504
Română (RO)
Instrucţiuni de instalare şi utilizare...................................534
Srpski (RS)
Uputstvo za instalaciju i rad .......................................563
Русский (RU)
Паспорт, Руководство по монтажу и эксплуатации......................592
Svenska (SE)
Monterings- och driftsinstruktion ....................................622
Slovenčina (SK)
Návod na montáž a prevádzku .....................................651
Türkçe (TR)
Montaj ve kullanım kılavuzu .......................................680
Українська (UA)
Інструкції з монтажу та експлуатації ................................710
中文 (CN)
安装和使用说明书 ..............................................740
Norsk (NO)
Installasjons- og driftsinstruksjoner ..................................769
(AR) ةيبرعلا
    .............................................798
繁體中文 (TW)
安裝操作手冊 .................................................827
4SL pumps, range 56
Table of contents

English (GB) Installation and operating instructions
Original installation and operating instructions
Table of contents
1. General information .............................................6
1.1 Hazard statements ..............................................6
1.2 Notes .....................................................6
1.3 Target group..................................................6
2. Product introduction ............................................7
2.1 Product description ..............................................7
2.2 Pumped liquids ................................................7
3. Identification .................................................8
3.1 Nameplate...................................................8
3.2 Type key....................................................9
4. Receiving the product........................................... 10
4.1 Transporting the product .......................................... 11
4.2 Inspecting the product ........................................... 11
4.3 Lifting the product .............................................. 12
5. Mechanical installation .......................................... 13
5.1 Installation types .............................................. 13
5.2 Vertical installation on auto-coupling .................................... 14
5.3 Pullout strengths for anchor bolts ..................................... 16
5.4 Minimum liquid level ............................................ 16
6. Electrical connection ........................................... 17
6.1 Pump wiring diagram ............................................ 18
6.2 Frequency converter operation ....................................... 20
6.3 Power cable data .............................................. 21
6.4 Sensors ................................................... 21
6.5 Thermal switches .............................................. 22
6.6 Moisture switches and leakage switches.................................. 22
6.7 Thermistors ................................................. 22
6.8 IO 113 module ............................................... 22
7. Startup ................................................... 23
8. Storage ................................................... 24
9. Maintenance and service ......................................... 25
9.1 Pump overhaul ............................................... 26
9.2 Motor liquid check and change ....................................... 26
9.3 Impeller clearance inspection........................................ 27
9.4 Impeller clearance adjustment ....................................... 28
9.5 Contaminated pumps ............................................ 29
10. Troubleshooting .............................................. 30
11. Technical data ............................................... 32
12. Disposing of the product ......................................... 33
5
English (GB)

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.
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.
1.3 Target group
These installation and operating instructions are intended for professional installers.
6
English (GB)

2. Product introduction
2.1 Product description
The 18-41 kW SL pumps are a range of Open S-tube® impeller pumps specifically designed for pumping
sewage and wastewater in a wide range of municipal and industrial applications.
4
3
5
6
7
1
2
TM081791
SL 18-41 kW pump
Pos. Description
1 Inlet
2 Outlet
3 Power and control cable
4 Lifting bracket
5 Terminal box
6 Submersible motor
7 Pump
2.2 Pumped liquids
The pumps are designed for:
• raw sewage with short and long fibres and particles in municipal and industrial wastewater systems
•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.
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English (GB)

3. Identification
3.1 Nameplate
TM082259
Pos. Description
1 EU Notified Body approving the Ex manufacturer
2 EU Explosion protection certificate No
3 UK Approved Body approving the Ex manufacturer
4 UK Explosion protection certificate No
5 Marking of explosion protection and Ex description
6 Pump type designation
7 Pump type designation (line 2)
8 Model number
9 Ambient temperature
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
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English (GB)

Pos. Description
24 Frequency
25 Insulation class
26 Production code (YYWW)
27 Weight
3.2 Type key
Example: SL.56M.210.4.51D.200.Z
Code Explanation Designation
SL Sewage pump without cooling jacket Pump type
56 Frame 56 Frame size
M Medium pressure Pressure range
L Low pressure
210 Power P2 x 10 [21 kW] Power [kW]
4 4-pole motor Number of poles
6 6-pole motor
51D 3 × 380-415D, 660-690Y (Standard)
50 Hz Voltage code for 50 Hz
200
Pump outlet nominal diameter
Pump outlet [mm]DN 200 = 200
DN 300 = 300
Z Custom-built products Customisation
9
English (GB)

4. 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.
TM082506
Pump packaging
10
English (GB)

4.1 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.
WARNING
Crushing hazard
Death or serious personal injury
‐Lifting and moving must be done by a trained person.
CAUTION
Sharp element
Minor or moderate personal injury
‐Packaging parts may be pointy or sharp. Wear hand protection.
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 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.
4.2 Inspecting the product
During periods of storage, protect the pump against moisture and heat.
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.
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English (GB)

4.3 Lifting the product
DANGER
Crushing hazard
Death or serious personal injury
‐Always check the lifting bracket and chain for corrosion or wear before lifting.
‐Always lift the pump by its lifting bracket or by a fork-lift truck.
DANGER
Crushing hazard
Death or serious personal injury
‐When lifting the pump, make sure the centre of gravity is between the forklift arms. The
approximate centre of gravity is marked with a label attached to the transport stand.
DANGER
Electric shock
Death or serious personal injury
‐Never lift the pump by the power supply cables.
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
Vertical M, L - Pos. 1, lifting handle
1
TM081922
Lifting point for vertical installation
12
English (GB)

5. Mechanical installation
Fit the extra nameplate supplied with the pump at the installation site, where it is easy to access and read.
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.
WARNING
Biological hazard
Death or serious personal injury
‐Media spraying from the pump can cause injury. Wear eye protection.
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.
5.1 Installation types
Installation type Description Installation and accessories
Vertical Sewage pump without cooling jacket
for vertical, submerged installation Permanent installation on auto coupling
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English (GB)

5.2 Vertical 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.
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. If the length of the guide rail exceeds 4 m, install an intermediate guide-rail holder to
ensure stability.
5. Unscrew the 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.
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.
14
English (GB)

TM081913
Lowering the pump
along the guide rails
TM081914
Connecting the
pump to auto
coupling
TM081912
Submerged
installation on auto
coupling
The free end of the cable must not be submerged as water may penetrate into the motor.
15
English (GB)

5.3 Pullout strengths for anchor bolts
Auto-coupling base unit Bolts
[mm]
Pull-out strength for a single bolt
[kN]
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.
5.4 Minimum liquid level
For a short period, the pump may be used to pump down the liquid level to remove the float layer.
To ensure adequate motor cooling, the following minimum requirements must be met:
•Vertical installation on auto-coupling: the pump must be completely submerged in the pumped liquid to
the top of the motor. See figure level 1 below.
1
TM081911
Liquid levels
16
English (GB)

6. 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.
WARNING
Electric shock
Death or serious personal injury
‐Before installation and startup, check the power cable for damage.
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 with the 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.
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, +10 % service factor for 50
Hz motors, +15 % service factor for 60 Hz motors. 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.
The most commonly used startup methods are the following:
•Direct-on-line starting (DOL).
• Star-delta starting (Y/D).
• Soft start.
The 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 m, or according to the
manufacturer's specifications.
17
English (GB)

The pump can be operated with a frequency converter according to the specifications of the manufacturer.
6.1 Pump wiring diagram
12
2
34567 8 910
1
1
1
3
4
-t°
4
-t°
4
-t°
TM082723
Pump connection, standard version
Pos. Description
1 PTO
2 Moisture switch (motor top)
3 Leakage switch
4 PTC
18
English (GB)

6.1.1 Motor wiring diagrams
L1 L2 L3
W
VU
TM082759
Star connection
L1 L2 L3
W
VU
TM082760
Delta connection
L1 L2 L3
W
VU W
VU
STAR DELTA
External STAR-DELTA
TM082761
Star-delta connection
19
English (GB)

6.2 Frequency converter operation
CAUTION
Electric shock
Minor or moderate personal injury
‐Be aware of possible residual voltage being present.
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.
Large motors driven with a frequency converter may be 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. Use pulse with modulation.
When operating the pump with 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.]
2.200 9.000
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.
20
English (GB)