Setup and connection
5.5 Connecting the pipes
5.5.1 Keeping the pipes clean
NOTE
Material damage due to impurities in the pump!
Make sure no impurities can ente r the pump.
1. Flush all pipe parts and fittings prior to assembly.
2. Ensure no flange seals protrude inwards.
3. Remove any blank flanges, plugs, protective foils and/or
protective paint from the flanges.
4. On welded pipes: Remove the welding beads.
5.5.2 Installing the suction pipe
1. Remove the transport and screw plugs from the pump.
2. To avoid air pockets:
– For supply operation: Run the pipes with a continuo us
downward slope to the pump.
3. Ensure no seals protrude inwards.
4. On wet pit installations: Observe the minimum immersion
depth (→ technical description).
5.5.3 Installing the pressure pipe
1. Remove the transport and screw plugs from the pump.
2. Install the pressure pipe.
3. Ensure no seals protrude inwards.
5.5.4 Checking the stress-free pipe connection s
Piping installed and cooled down
NOTE
Material damage due to distorted pump casing
Ensure that all pipes are stress relieved when connected
to the p ump.
1. Disconnect t he pipe connecting flanges from the pump.
2. Check whether the pipes can be moved freely in all direc-
tions within the expected range of expansion:
– Nominal diameter < 150 mm: by hand
– Nominal diameter > 150 mm: with a small lever
3. Make sure the flange surfaces are parallel.
4. Reconn ect the pipe connecting flanges to the pump.
5.6 Electrical con nection
DANGER
Risk of death due to electric shock!
Have all electrical work carried out by qualified electricians
only.
5.6.1 Connecting the motor
Follow the instructions of the motor manufacturer.
1. Conne ct the motor according to the conne ction diagram.
2. Make sure no danger arise s due to electric power.
3. Install an EMERGENCY STOP switch.
5.6.2 Connecting the filter heating (optional)
Connect electric filter heating properly (→ Supplier docu-
mentation for filter heating).
5.6.3 Checking the sense of rotation
Only possible when putting the pump into service
(→ 6.1 Putting the pump into service for the first time,
Page 18).
626.0005 GB – 550 041 BA-2014.01 SPF s eries 17
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