Function; The Door Lock Locks The Door - Electrolux W365H Service Manual

29

Function

The door lock locks the door

When the door is closed (closed door lock
Fig.
switch S3), the programme unit may request
3
door locking by applying a voltage of 200-
240 V on door lock controller A31 input X92.
The following check is made by the A31 card
prior to locking of the door:
• No water in drum - input X93 from level
guard B2 is closed = 0 V
• Motor not engaged - input X94 from motor
control U1 open = 5 V
• Drum not rotating - pulse frequency on
input X95 from rotation sensor B3 less than
0.4 Hz.
When the above conditions are met, the card
A31 outputs a closing pulse on output X96 to
the door lock actuator/coil, which then locks the
door. The micro switches S4a and S4b in the
actuator/door lock are closed when the door is
locked. These micro switches feed voltage to:
• The output relays on I/O card 1. The relays
govern the machine's drain and water valves
as well as heater switch-on.
• Interlock signal for motor control (input
X302 via I/O card 1) that releases the motor
start prevention state.
Programme operation is now possible.
4
29. Door and door lock
3
Door lock
control A31
X92
X93 X96
X95 X94
Motor
Level
control
X304
guard
U1
B2
M1
Rotation sensor B3
Service
Manual
Programme unit
A1
I/O card 1
X4
A11
X10 X5
X302
Door lock
A41
5225
438 9145-61/06
04.10