Loadrite LR911, Operator'S Manual

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LOADRITE SPRINT OPERATORS MANUAL
25
7 Obtaining the Best Accuracy
Lifting Speed
The hydraulic pressure required to lift a load varies with the speed of lift.
The Loadrite electronically corrects for most variations, but better accuracy
is obtained if you limit the range of lifting speed used.
Keep engine revs constant.
Trigger Point
The hydraulic pressure required to start lifting is much greater than that
required to keep the load moving smoothly upwards. It is important that the
load is moving at a steady speed when it reaches the trigger point.
We recommend that you start the lift well below the trigger point. In terms
of time, at least 2 seconds of lift before the trigger point.
Bounce
Most loaders have pneumatic tyres which can cause the machine to bounce
when lifting. Any bounce causes variation in the hydraulic pressure and
affects the accuracy of the weight measurement.
To minimise the effect of bounce, always operate the lift lever before
accelerating the engine and start the lift well below the trigger point.
Centre of Gravity
The hydraulic pressure in the lifting cylinders depends on where the centre
of gravity of the load is.
It is important that the bucket is always in the same position – fully rolled
back.