LW Measurements LDS Large Drum Scale - Manual (Page 25)

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increase the value of the flashing digit, press HOLD
key to confirm, it will show CAL again. (We
recommend a calibration weight at least 2/3 of the full
capacity to get an accurate weighing)

Press PRINT key, display will show CAL and then the
AD value, press UNIT key when the stable indicator
displayed, it will show the flashing calibration weight,

Place the known test weight on the platform, press
UNIT key after stable indicator displayed, it will show -
-----, and then the AD value, now the calibration is
finished.

Turn off the scale; remove the test weight from the
platform.

Press ON/OFF key to turn the scale on to test if the
weighing is accurate, if not, repeat above steps.
6 Maintenance and service
The weighing machine must be treated carefully and cleaned
regularly. It is a precision instrument.
For maintenance-work, the balance must be separated from
the power supply (remove power adapter plug from socket).
Also ensure that the balance cannot be reconnected to the
power supply during the work by a third party.
Take care during cleaning that no liquid penetrates into the
appliance. If liquid is spilt on the balance, the latter must
immediately be disconnected from the electricity supply. The
balance may only be used again after it has first been checked
by a service engineer.