Komatsu WA500-6H, Operation & Maintenance Manual

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6.1 Handling load meter Attachments, Options
6-6
WA500-6H – VEAM430100
2. Points to remember when carrying out calibration
When carrying out calibration, remember the following points.
z When calibrating the load, the known weight is needed. It is
necessary to use the known weight or to calculate the weight
from the measurements of the machine when unloaded and
the machine when it is loaded. Using the actual load will give
higher accuracy.
z
Payload:
Calibrate the load using the rated load and 1/2 rated load as
a guideline.
z Load the posture:
Carry out the load calibration in the same posture as when
carrying out actual operations.
z Warming up:
Carry out warming up to set the hydraulic oil temperature to
the normal working range, then carry out normal operations
(including raising and lowering the lift arm) for at least 10
minutes (preferably more than 30 minutes).
z
Lift arm RAISE speed:
To make the lift arm RAISE speed constant, carry out at the
lift arm RAISE detent.
z
Accelerator pedal:
Depress the accelerator pedal to the same angle as for
actual operations. Do not change the angle of the accelera-
tor pedal. Always keep it constant.
z
Bucket posture:
Measure at full tilt. Carry out calibration also at full tilt.
For details of the method of calibration, see the Operation and
Maintenance Manual.