Electrolux FOM 71 CLS Maintenance Manual page 21

Adjustment of the FOM 71 CLS scale control unit in event that the scale
cannot be set to zero
If the offset weight is too high (or negative), a zero calibration may fail. This may be cau-
sed by the addition or removal of heavy objects (hoses, panels, etc) during installation.
The instruction below describes how to overcome this fault.
1. Remove the lower front panel and open up the control box for the FOM 71 CLS Weight
System located below the machine as shown in the picture above. The box is only at-
tached to the frame with zippers.
2. All panel plates and components removed from the machine must be placed on top of
the machine. This is important in order to get the correct weight when performing the
calibration.
3. Turn the potentiometer (shown above) counter clockwise until the Clarus Control display
shows about -20 kg. If you turn the display too far it will display 999. If so, turn the poten-
tiometer back about 1 full turn.
4. Once this has been done, a normal zero calibration may be performed in accordance
with the instructions above.
Calibration of the scale system
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