Operating instructions

Mechanical and electrical design

0638

0639

Drive motors

Description

Both motors, one for wash and distribution and

one for extraction, are installed on the same

motor bridge. The motors drive the drum and are

mechanically connected to each other by V-belts.

On the EX 22 there is also an electromechanical

clutch. The motors rotate at each others' speed

during the wash speed, distribution speed and

low extraction speed.

During high extraction speed the speed control

on the EX 22 gives a signal to the

electromechanical clutch. This disconnects the

motors from each other mechanically. The wash

motor now rotates at distribution speed and the

extract motor at high speed.

On the EX 12 the power supply to the wash

motor is disconnected by the speed control.

On the motor bridge there are belt tensioning

devices. The extract motor is screwed to a

mobile plate which moves via oblong holes in the

motor bridge. This is used to tension the belt

drive between the motors. It is possible to tilt the

entire motor bridge with the use of the oblong

holes on the wash motor side. This is used to

tension the V-belt up the wash drum.

The motors are equipped with thermal protectors

which are placed in the stator coil. In the case of

overheating in the motors, i.e. if the temperature

exceeds 130°, the protector contacts cut the

power to the motor relays.

Fig.