Komatsu WA320-5H, Руководство по эксплуатации и техническому обслуживанию

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ATTACHMENTS, OPTIONS
MACHINE MONITOR WITH LOAD METER
6-39
CARRYING OUT CALIBRATION (ADJUSTING 0 POINT) WHEN EMPTY
REMARK
When carrying out calibration with the machine unloaded, the accuracy is improved by doing as follows.
Hydraulic oil temperature: Carry out the calibration with the hydraulic oil temperature in the normal operating range
(approx. 60 - 85°C (140 - 185°F), near the center of the white range on the hydraulic oil temperature gauge).
(Compensate for the error caused by the temperature of the pressure sensor. This makes it possible to carry out
calibration that matches the machine.)
Engine speed: When carrying out calibration, keep the engine speed constant at the speed used for normal oper-
ations (near the rated speed).
(The effect of compensation for the engine speed shows the maximum effect. When carrying out the actual mea-
surement, even if the engine speed varies, accurate measurement can be made.)
Bucket posture: Carry out calibration with the bucket at full tilt.
Carry out the measurement for the weight also at the full tilt. If the bucket is not at full tilt, the position of the center
of gravity of the load changes and the load cannot be measured accurately.
Work equipment speed: When carrying out calibration, operate the work equipment slowly. (Take approx. 10 sec-
onds to raise from the travel posture to the maximum height of the lift arm.)
(This is done in order to increase the measurement data when carrying out calibration.)
1. Check that the normal service meter and time are dis-
played on the character display.
2. Press the ( ) of monitor panel selector switch 1 and dis-
play “LOAD METER“.
3. Press the ( ) of monitor panel selector switch 1, then
press the (>) or (<) of monitor panel mode selector switch 2
and select “CALIBRATION“.