41
Mechanical and electrical design
Out of balance switch
Description
The purpose of the out-of-balance protection switch is to prevent the
machine from being damaged by vibration that could be caused if the
washing load was too unevenly distributed in the drum during spinning.
The switch consists of a microswitch with an extended operating lever,
fitted to the electrical component platform, and a rectangular plate with a
cut-out fitted to the outer drum.
Excessive movement of the outer drum caused by vibration will cause the
plate to operate the microswitch, resulting in the programmer stepping
forward to the next stage of the program and interrupting the current to the
spin connector.
See also Function Sequences.
Repair instructions
Checking the setting of the out-of balance protection switch.
When the machine is spinning, with a load in the drum, check that the
operating arm of the microswitch is about 5 mm below the centre of the
rectangular cut-out. Adjust if necessary by moving the metal plate with the
cut-out.
The out-of-balance protection switch operates repeatedly
•
Unsuitable load in the drum
•
The switch is incorrectly adjusted. Adjust as described above.
•
The shock-absorbers are worn.
0933
60
Fig.
60
Control unit
Microswitch
Operating arm
Contact plate
Outer drum
