Walrus TPCK 2T 50Hz, Инструкция по эксплуатации, Страница: 8 / 12

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12. Fault fi nding
(Make sure electricity supply has been switched off before trouble shooting)
Fault Cause Remedy
1. Motor does not
run when started.
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. M o to r s t a r te r
overload trips
out immediately
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.
3. M o to r s t a r te r
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
b u t t h e p u m p
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.
Pump strainer partly blocked by
impurities.
Clean the strainer.
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.