English (GB)
9
English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
Page
1. General warning
2. Symbols used in this document
3. General description
This booklet includes instructions for installation, operation and
maintenance of Grundfos submersible sewage and wastewater
SE/SL pumps, fitted with motors of 9 to 30 kW.
The booklet also includes specific instructions for the pumps.
3.1 Applications
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.
1. General warning
9
2. Symbols used in this document
9
3. General description
9
3.1 Applications
9
3.2 Operating conditions
10
3.3 Sound pressure level
10
3.4 Motor liquid
10
4. Delivery and handling
11
4.1 Transportation and storage
11
4.2 Lifting points
11
5. Identification
12
5.1 Nameplate
12
5.2 Type key
13
6. Safety
14
7. Installation
15
7.1 Installation types
15
7.2 Submerged installation on auto coupling
16
7.3 Dry installation
16
7.4 Submerged installation, temporary
17
7.5 Pump controllers
17
8. Electrical connection
17
8.1 Sensors
18
8.2 Frequency converter operation
19
8.3 Cable data
19
9. Start-up
20
10. Maintenance and service
20
10.1 Checking and changing the motor liquid
21
10.2 Inspection and adjustment of impeller clearance
22
10.3 Contaminated pumps
23
11. Fault finding
24
12. Disposal
24
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
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,
it may result in malfunction or damage to the
equipment.
Notes or instructions that make the job easier
and ensure safe operation.
Special conditions for safe use of SE/SL pumps,
9-30 kW:
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. The flame path gaps of the motor are specified by
the manufacturer and are narrower than standard.
Note: In case of repairs, always use original
service parts from the manufacturer as this
ensures correct dimensions of flame path gaps.
4. During operation, the cooling jacket, when fitted,
must be filled with cooling liquid. The level of
pumped liquid must be controlled by level
switches connected to the motor control circuit.
5. The minimum level depends on the installation
type and is specified in these installation and
operating instructions.
Make sure the permanently attached cable is suitably
mechanically protected and terminated in a suitable
terminal board.
To Next Page
Need help?
General
