Operating instructions

42
Mechanical and electrical design
Fig.
66
2019
66
X90
LED
X96
X95
X99
Fuse F1
X91 X92
X93 X94
Rotation guard
The rotation guard checks that the drum is completely at a standstill before the
door can be opened. When the drum has been still for approx. 2 seconds the
coil in the door lock is activated and the lock can be opened (providing the
water has emptied and the programmer has reset). This guard also checks that
the drum is actually rotating when the wash or extraction relays are operating.
The rotation guard consists of a circuit board located in the automatic unit and
a pulse generator mounted in a holder on the rear of the machine. There is a
magnet on one of the spokes of the belt pulley. Each time this magnet passes
the pulse generator, a contact within the pulse generator closes and a pulse is
sent to the rotation guard.