Grundfos SL Series Installation And Operating Instructions Manual
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Grundfos SL Series Installation And Operating Instructions Manual

Grundfos SL Series Installation And Operating Instructions Manual

Submersible sewage and wastewater pumps
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English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1.
General warning
2.
3.
3.1
3.2
3.3
3.4
4.
4.1
4.2
5.
5.1
5.2
6.
7.
7.1
7.2
7.3
7.4
7.5
8.
8.1
8.2
8.3
9.
10.
11.
12.
1. General warning
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.

2. Symbols used in this document

Warning
If these safety instructions are not observed,
it may result in personal injury.
Warning
If these instructions are not observed, it may lead
to electric shock with consequent risk of serious
personal injury or death.
Warning
The surface of the product may be so hot that
it may cause burns or personal injury.
Warning
The sound pressure level is so high that hearing
protection must be used.
If these safety instructions are not observed,
Caution
it may result in malfunction or damage to the
equipment.
Notes or instructions that make the job easier
Note
and ensure safe operation.
Page

3. General description

9
This booklet includes instructions for installation, operation and
9
maintenance of Grundfos submersible sewage and wastewater
9
SE/SL pumps, fitted with motors of 9 to 30 kW.
9
The booklet also includes specific instructions for the pumps.
10
Special conditions for safe use of SE/SL pumps,
10
9-30 kW:
10
1. Make sure the moisture switches and thermal
11
switches are connected in two separate circuits
11
and have separate alarm outputs (motor stop) in
11
case of high humidity or high temperature in the
12
motor.
12
2. Bolts used for replacement must be class A4-80
13
or A2-80 according to EN/ISO 3506-1.
14
3. The flame path gaps of the motor are specified by
15
the manufacturer and are narrower than standard.
15
Note: In case of repairs, always use original
16
service parts from the manufacturer as this
16
ensures correct dimensions of flame path gaps.
17
4. During operation, the cooling jacket, when fitted,
17
must be filled with cooling liquid. The level of
17
pumped liquid must be controlled by level
18
switches connected to the motor control circuit.
19
5. The minimum level depends on the installation
19
type and is specified in these installation and
20
operating instructions.
20
Make sure the permanently attached cable is suitably
21
mechanically protected and terminated in a suitable
22
terminal board.
23
24

3.1 Applications

24
SE/SL pumps, 9-30 kW, are designed primarily for pumping of
raw sewage with short and long fibres and larger particles in
municipal and industrial wastewater systems and sludge with dry
solid content of up to 3 % for channel impellers and up to 5 % for
vortex impellers.
The pumped liquid for this type of pumps can be surface water,
industrial wastewater with long and short fibrous material,
residential wastewater with toilet waste, unscreened sewage in
municipal pumping stations or inlet pumping stations to the
wastewater treatment plant.
Secondly, the pumps will also be used for pumping raw water.
Depending on the installation type, the pumps can be used for
submerged or dry, horizontal or vertical installation.
Maximum solids size: 75-160 mm, depending on the range.
9

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Summary of Contents for Grundfos SL Series

  • Page 1: Table Of Contents

    3. General description General warning This booklet includes instructions for installation, operation and Symbols used in this document maintenance of Grundfos submersible sewage and wastewater General description SE/SL pumps, fitted with motors of 9 to 30 kW. Applications The booklet also includes specific instructions for the pumps.

  • Page 2: Operating Conditions

    3.4 Motor liquid 3.2.3 Level of pumped liquid The motor is factory-filled with Grundfos motor liquid SML-3 which is frost-proof down to -20 °C. The motor liquid helps to For a submerged pump, installation type C, the lowest stop level transfer the heat generated by the motor to the cooling chamber must always be above the pump housing.

  • Page 3: Delivery And Handling

    4. Delivery and handling Pump frame size The pump is supplied from the factory in suitable packing in which Discharge flange size it should remain until installation. Make sure that the pump cannot roll or fall over. DN 80 Middle DN 100 Middle 4.1 Transportation and storage...

  • Page 4: Identification

    5. Identification 5.1 Nameplate All pumps can be identified by means of the nameplate on the motor top cover. See fig. 2. If the nameplate is missing or damaged, the pump can be identified by the serial number stamped under the nameplate. Type: SL1.120.200.220.4.

  • Page 5: Type Key

    5.2 Type key Code Example .120 .200 .220 .5 .1D Pump type: Sewage pump with cooling jacket Sewage pump without cooling jacket Impeller type: Single-channel impeller SuperVortex (free-flow) impeller Pump free passage: Maximum solids size [mm] Pump discharge: Nominal diameter of pump discharge port [mm] Output power, P2: P2 (100 W) Sensor version:...

  • Page 6: Safety

    6. Safety Warning Pump installation in tanks must be carried out by specially trained persons. Warning Persons must not enter the installation area when the atmosphere is explosive. Warning It must be possible to lock the mains switch in position 0. Type and requirements as specified in EN 60204-1, 5.3.2.

  • Page 7: Installation

    7. Installation Permanent, vertical installation in a tank The pump can easily be pulled out of and lowered into the tank Warning via the guide rails. The liquid level can be set lower for installation type C than for type S. See fig. 1 and fig. 5. During installation, always support the pump by means of lifting chains or place it in horizontal position to secure stability.

  • Page 8: Submerged Installation On Auto Coupling

    5. Unscrew the provisionally fastened guide rail bracket. Insert Permanent, horizontal installation in a pump room the expansion dowels into the guide rails. Fasten the guide rail The pump is bolted to the suction and discharge pipes by means bracket on the inside of the tank. Tighten the bolts in the of flange connections.

  • Page 9: Submerged Installation, Temporary

    EN 60204-1, 5.3.2. SE/SL pumps, 9-30 kW, can be connected to a separate The electrical connection must be carried out in Grundfos pump controller for level control, which is available as accordance with local regulations. an accessory: The supply voltage and frequency are marked on the pump •...

  • Page 10: Sensors

    WIA (water-in-air) Cable Pt1000 in stator winding ● ● The sensor can be used together with Grundfos IO 113 or Pt1000 in upper bearing ● SM 113, but it can also be used together with other controllers Pt1000 in lower bearing ●...

  • Page 11: Frequency Converter Operation

    Let the pump run at rated speed at least once a day in order to 8.1.8 IO 113 prevent sedimentation in the piping system. The IO 113 forms the interface between a Grundfos sewage and • Do not exceed the frequency indicated on the nameplate as wastewater pump with analogue and digital sensors and the this may cause motor overload.

  • Page 12: Start-Up

    9. Start-up 10. Maintenance and service Warning Warning Before manual starting or changeover to During maintenance and service, including automatic control, make sure that no persons are transportation to service workshop, always working on or near the pump. support the pump by means of lifting chains or place it in horizontal position to secure stability.

  • Page 13: Checking And Changing The Motor Liquid

    10.1 Checking and changing the motor liquid Warning When loosening screw B of the shaft seal Clean the outside of the pump at regular intervals Caution housing, note that pressure may have built up in in order to retain the heat conductivity. the chamber.

  • Page 14: Inspection And Adjustment Of Impeller Clearance

    10.2 Inspection and adjustment of impeller clearance Impeller clearance X Pressure range [mm] E = Extra low pressure 0.9 ± 0.1 L = Low pressure 0.9 ± 0.1 M = Medium pressure 0.6 ± 0.1 H = High pressure 0.6 ± 0.1 S = Super high pressure 0.5 ±...

  • Page 15: Contaminated Pumps

    If Grundfos is requested to service the pump, Grundfos must be contacted with details about the pumped liquid etc. before the pump is returned for service. Otherwise Grundfos can refuse to accept the pump for service.

  • Page 16: Fault Finding

    This product or parts of it must be disposed of in an environmentally sound way: 1. Use the public or private waste collection service. 2. If this is not possible, contact the nearest Grundfos company or service workshop. Subject to alterations.

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Se series

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