Komatsu WA320-5H Operation & Maintenance Manual page 288

ATTACHMENTS, OPTIONS
CARRYING OUT CALIBRATION WHEN LOADED
Normally there is no need to carry out calibration with load. But in the following cases, installation of a bucket
except standard and replacement of main monitor, the pressure sensor of load meter or replacement of boom
angle sensor, accurate value can not be showed. In this case there is need to carry out calibration with load.
Please contact KOMATSU distributor to carry out the calibration.
ADDITION FUNCTION
After setting the addition mode, if the material being handled is
"A" as shown in the diagram on the right, the procedure is as
follows.
1. Measure the 1st load
The result of weighing the bucket load is 5.1 ton.
The bucket load display shows 5.1 ton
The total load display shows 5.1 ton
Precautions when weighing load
q The suitable precision for the weight of the bucket load
can be obtained if the engine speed is slightly above
low idling.
q Set the bucket to the full tilt position.
q When starting the measurement, set the height of the lift arm within a range from the travel posture to -10°
from the horizontal position of the lift arm.
2. When 15 seconds have passed from the time of measure-
ment, the bucket load is canceled and the display returns
to 0.0.
MACHINE MONITOR WITH LOAD METER
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