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4804
0107
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Notice
Date
Page
01201138
INSTRUCTION
HANDBOOK
11. Machine
operation
Fault-fi nding, weighing equipment
Error message on display :
Weight, in kg : 999,0 or -999,9
Probable cause :
The weighing equipment is overloaded/
"underloaded", i.e. the load cells are sending
a signal which is too high/low to the scale
unit. Probable cause is one or more load
cells faulty. The dead load selector may be
on the wrong setting. The machine may be
incorrectly installed.
Fault-fi nding procedure :
• Check that all connections to the machine
are fl exible.
• Remove the side panel. Check that the
dead load selector is set to
580-880 kg
(machines 250-350-500) or
830-1130 kg
(machine 650). If it is not, set it correctly
and calibrate the weighing equipment
according to "Calibrate the scale" under
"Machine operation".
• If the weight displayed is -999.9, try fol-
lowing the "Zero calibration" procedure
(described under "Zero calibration" in the
"Machine operation" chapter).
• Remove the side panels and check that
the load cells are unobstructed. Remove
any mechanical obstructions.
• Taking the load cell cables one at a time,
disconnect the cable connecting each
load cell to the scale unit. Continue one
by one until a stable weight parameter is
displayed (but not 999.9). When this sta-
ble parameter is displayed you will know
which of the load cells must be faulty.
Fig.
8
Fig.
8
Weight-totalling board
Board connectors
Board connectors
Dead load
selector
Содержание Washer-extractors WS4250H
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