Safety Lock - Electrolux Wascator W100 Service Manual

12 9005 8
12
Type
Edition Page

Safety Lock

The machine can not be started until the door is closed. When the start
button on the machine is pressed, or the correct number of coins are
inserted into the coin meter, the timer advances to stage 1. Row 1b (1) then
closes and the solenoid which locks the door (4) receives voltage. When
the lock piston has locked the door, the delay unit switch (6) closes and
point C receives voltage. It is only then that the drum can begin to
revolve and water begin to fill.
At program stage 1, row 10b (2) closes up which means that the bimetal
spring in the delay unit heats up. Once the spring is heated, the delay unit
holds the door locked. Row 10b is closed during the entire wash program.
In the case of a power failure, it takes approx. 2 minutes for the delay unit
spring to cool down and the door to open. This is a security measure that
guarantees the drum has ample time to stop and that water can drain (the
drain valve opens automatically in the event of a power failure).
During the last phase of the tumble cycle (program stage 49 -51) row 10b
(2) opens. When the program is completed (program stage 52), row 1a (1)
opens and the solenoid which opens the lock (3) withdraws the lock piston
so that the door can be opened immediately. This program stage lasts 2
minutes. During this time and the time allotted to stages 49 -51, the delay
unit is able to cool down enough so that the door does not lock when row
1a opens after 2 minutes.
Sequence diagram
Prerinse
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
1a. Door solenoid open
1b. Door solenoid close
10b. Doorlock
12. Function Sequence
Prewash Mainwash
Cool
down
Service
Manual
Drain/
Rinse 4 Tumbling
Spin
1554