Walrus Pump TPU Series, Инструкция по эксплуатации

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10. Fault Finding
Make sure to disconnect the power before attempting to diagnose any fault.
Fault Cause Remedy
1. Motor does not run
start.
Supply failure. Connect the electricity supply.
Fuses are blown. Replace fuses.
Motor starter overload has
tripped out.
Reactivate the motor protection.
Thermal protection has tripped
out.
Reactivate the thermal protection.
Main contacts in motor starter
are not making contact or the
coil is faulty.
Replace contacts or magnetic coil.
Control circuit is defective. Repair the control circuit.
Motor is defective. Replace the motor.
2. Motor starter
overload trips out
immedia tely when
supply is switched on.
One fuse / automatic circuit
breaker is blown.
Cut in the fuse.
Contacts in motor starter
overload are faulty.
Replace motor starter contacts.
Cable connection is loose or
faulty.
Fasten or replace the cable
connection.
Motor winding is defective. Replace the motor.
Pump mechanically blocked. Remove the mechanical blocking
of the pump.
Overload setting is too low. Set the motor starter correctly.
One fuse / automatic circuit
breaker is blown.
Cut in the fuse.
3. Motor starter
overload trips out
occasionally.
Overload setting is too low. Set the motor starter correctly.
Low voltage at peak times. Check the electricity supply.
4. Motor starter has not
tripped out but the
pump
does not run.
Supply failure. Connect the electricity supply.
Fuses are blown. Replace fuses.
Thermal protection has
tripped out.
Reactivate the thermal protection.
Main contacts in motor starter
are not making contact or the
coil is faulty.
Replace contacts or magnetic coil.
5. Pump runs but gives
no liquid or pump
capacity is not constant.
Liquid level in tank too low. Increase the liquid level.
Pump draws in air. Check the suction conditions.
6. Leakage in shaft seal. Shaft seal is defective. Replace the shaft seal.
7. Noise. Cavitation occurs in the pump. Check the suction conditions.
Pump does not rotate freely
(frictional resistance) because of
incorrect pump shaft position.
Adjust the pump shaft.