Service manual

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29
29. Door and door lock
Service
Manual
Fig.
1
Fig.
2
Description
General
The door locks consists of the following:
• Door lock A111, which contains
- An actuator that locks the door lock and
also has two built-in micro switches, S4a
and S4b. The actuator is bi-stable, i.e., it
has two stable positions: locked door and
unlocked door. The actuator must receive a
pulse to lock and unlock the door lock. S4a
and S4b are both closed when the door is
locked.
-A micro switch S3 that is closed when the
door is closed.
- An emergency opening arm/emergency
opening button that can be used to open
the door lock in an emergency.
• Door lock controller A31 situated in the front
control unit of the machine. This card controls
the door lock function and supervises whether
the drum is empty and not turning. It locks and
unlocks the door lock when the programme
unit requests door locking or unlocking.
Actuator (with
micro switch S4a
and S4b)
Micro switch S3
X96 (to door lock control A31)
5368, 6112
Emergency opening arm
1
X30 (to programme
unit A1)
Emergency opening button
X96 (to door lock
control A31)
X30 (to programme
unit A1)
2
Door lock controller A31
5184, 5916