When Measuring - Komatsu WA500-6H Operation & Maintenance Manual

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When measuring

1. Load posture
If the center of gravity of the load changes (in particular, to
the front or rear), the pressure on the lift arm cylinder
changes, and the accuracy becomes poor. Carry out the
load calibration in the same load posture as when measur-
ing.
2. Warming up
If the hydraulic oil temperature is low, the accuracy may be
poor. Carry out normal operations (including raising and low-
ering the lift arm) for at least 10 minutes (if possible, 30 min-
utes) before starting measurement.
3. Lift arm operation
If the lift arm RAISE speed changes during the measure-
ment, the lift arm cylinder pressure also changes and the
accuracy of the measurement becomes poor. In the mea-
surement range (-30° and above), keep the lift arm speed
constant as far as possible (keep the movement of the lift
arm control lever constant).
4. Bucket operation
If the bucket tilt angle changes, the center of gravity of the
load changes and the accuracy of the measurement
becomes poor. During calibration and measurement, oper-
ate so that the bucket is tilted fully.
5. Travel
Always stop the machine when measuring. Do not travel. If
the machine has to travel, travel at low speed (5 km/h (3.1
MPH)) and avoid accelerating or decelerating.
6. Angle of ground
If the measurement is carried out on a slope, the accuracy of
the measurement becomes poor. Always measure on level
ground.
WA500-6H – VEAM430100
6.1 Handling load meter
6-7