16
11
Maintenance and Servicing
11.1
Cleaning
Before cleaning, please disconnect the appliance from the operating voltage.
Please do not use aggressive cleaning agents (solvents or similar agents), but a cloth dampened
with mild soap suds. Ensure that no liquid penetrates into the device and wipe with a dry soft
cloth.
Loose residue sample/powder can be removed carefully with a brush or manual vacuum cleaner.
Remove spillages immediately.
11.2
Maintenance and repair
The appliance may only be opened by trained service technicians who are authorized by us
Before opening, disconnect from power supply.
12
Trouble Shooting
Failure
Possible Cause
The display does
not light up.
The balance is not switched on.
The mains supply connection has been interrupted (mains cable not plugged
in/faulty).
Power supply is interrupted.
The displayed
weight is constantly
changing
Draught /air movement.
Table / floor vibrations.
Weighing plate has contact with other objects.
Electromagnetic fields / static charging (choose different location/switch off
interfering device if possible).
The weighing result
is obviously wrong
The display of the balance is not at zero.
Adjustment is no longer correct.
Great temperature fluctuations.
Warm-up time was ignored.
Electromagnetic fields / static charging (choose different location/switch off
interfering device if possible).
F----L
Lower zero position of sensor signal (re-Adjustment).
F----H
Weighing capacity is exceeded.
C----L
Lower zero position of sensor signal (re-Adjustment).
C----F
Calibration error, instability or not at zero point during calibrating.
C----H
Calibration error, items on the pan or at higher zero point during calibrating.
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14092020
