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Type Edition Page
| Service |
29. Door and Safety Locking Device | Manual |
Function
When the door is closed, the microswitch trips and indicates to the timer that the door is closed.
When the machine starts, the solenoid locks the lock knob by drawing the lock bolt into closed position. A microswitch in the delay unit is controlled by the lock bolt and indicates that the lock bolt is in closed position. Only when this signal is received does the drum start to rotate and water begin to fill the drum.
When the wash program is completed, the solenoid releases the lock bolt and the safety lock can be opened without any delay. The solenoid remains energized for approx. two minutes so that the bimetal spring in the delay unit can
If a power failure occurs during a wash cycle, the delay unit keeps the door locked for approx. two minutes allowing the drum to stop rotating and the water to drain (the drain valve opens automatically in the case of a power failure).
Fault tracing
If the solenoid does not lock the door:
•Check that there is voltage reaching the right coil in the solenoid. Measure the voltage supply to the coil to check for possible power failure.
•Check that the lock bolt runs smoothly (the door must be closed) and that the solenoid plunger does not jam.
The door remains locked longer than approx. two minutes:
•Check that there is voltage to the left coil in the magnet. Measure the voltage supply to the coil to check for possible power failure.
Other possible reasons for faults:
•Faulty microswitch
•Faulty switch in delay unit
N.B!
The safety lock is an important safety component and may not be repaired. In case of faulty functioning, the entire safety lock should be replaced.
