Setup and connection
5.6.4 Inspection for stress-free pipe connections
✔ Piping complete and cooled down
1. Separate the connecting flanges of the pipes from the
pump.
2. Check that pipes are freely moveable in all directions within
the range of expected expansions:
– nominal width < 150 mm : by hand
– nominal width > 150 mm : with short lever
3. Make certain that the flange surfaces are parallel.
4. Reconnect the connecting flanges of the pipes at the pump.
5.6.5 Inspecting the support foot for distortion
1. Loosen the bolts connecting the support foot to the base
plate.
2. If the support foot moves, compensate distortion:
– lateral shift: by means of slotted holes
– height shift: by means of metal shims
3. Tighten the suppo rt fo ot bol ts in the base plate, m aking cer-
tain that the bearing bracket is not distorted in the process.
5.7 Electrical connection
DANGER
Risk of death through electric shock!
Have all electrical work carried out by qualified electricians
only.
DANGER
Risk of death due to rotating parts!
Isolate the motor from its supply voltage and keep it locked
in that state while carrying out any fitting or maintenance
work.
5.7.1 Connecting the motor
Follow the instructions of the motor manufacturer.
1. Connect the motor according to the connection diagram.
2. Make certain to prevent hazards due to electric energy.
3. Install an EMERGENCY OFF switch.
5.7.2 Checking the direction of rotation
DANGER
Risk of death due to rotating parts!
Use protective equipment when carrying out any work on
the pump.
Secure the key against being thrown off during the rotation
direction check.
Keep adequate distance to rotating parts.
CAUTION
Material damage caused by running dry and wrong direc-
tion of rotation!
Decouple the motor from t he pump.
1. Switch motor on and immediately off again.
2. Check that the direction of rotation of the motor corre-
sponds to the rotational direction arrow on the pump.
3. If the direction of rotation is different: swap two phases.
4. Couple the motor to the pump.
EN – 02 BA-2005.07 NPC series 19
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