0107 73 11
Notice Date Page
01201138
INSTRUCTION
HANDBOOK
11. Machine
operation
• If more than one load cell is faulty, the faulty cells can be identifi ed using a multimeter on the
scale unit weight-totalling board to check each cell in turn, as follows :
- Remove the four screws on the scale unit cover.
- Check that the four load cell cables are connected to the scale unit.
- Measure the voltage at the connectors on the weight-totalling board, between terminal 2 and
3 for each load cell. The normal value for an unladen machine is approx. 3-5 mV (DC). A
value different from this indicates that the load cell is faulty.
- Replace the faulty load cell(s) as described under "To replace a load cell".
Menu line which should show actual weight not displayed.
Possible causes :
The option “DISPLAY WEIGHT ALLOWED” may be switched off (have the answer “No” along-
side) in “Settings 1”. Possible fault in communication with CPU board or display. The fault can
also be in the scale unit.
Fault-fi nding procedure :
• Check in "Settings 1" that the option "DISPLAY WEIGHT ALLOWED" has "Yes" alongside.
• Check that the cables/wiring for CPU communication and power supply are connected to the
scale unit and in good condition.
• If the washer extractor appears to be working normally apart from the absence of weight
parameter display, try replacing the scale unit as described under "To replace the scale unit".
If you suspect that the weighing equipment is not displaying accurate weight value.
Probable cause :
Probably a faulty load cell.
Fault-fi nding procedure :
• Place an object of known weight at one corner on top of the washer extractor. Check the
weight shown on the display. Move the weight to each of the other corners of the machine in
turn, checking the display each time. If one corner is different from the others, this will reveal
which load cell is faulty.
• Check that the load cell in question is mechanically unobstructed, free of anything which
could affect its normal functioning.
• Replace the load cell as described under "To replace a load cell".