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7 Daily maintenance and calibrations
Please maintain and adjust as follows and contact us if you have any
questions.
7.1 Maintenance
Maintenance items listed below should be done daily.
Check all components of the LMI system to make sure no cable is
damaged or broken.
Check the insulating layer of all the cables. If the insulating layer or the
wire inside damaged, please replace new one immediately.
Check the pressure transducers at the luffing cylinder and the connection
hoses for oil leakage.
Check the cable reel wire for sufficient tension.
Check the cable reel mounting & torsion spring for proper function.
Check the angle transducer for oil leakage.
7.2 Length sensor adjustment
When the displayed boom length is not correct (exceed the permitted error
ranges), please adjust as follows:
Retract the boom to the basic boom condition and check the pre-stressing force
of the cable reel (cable must be tight)and then open the cover of the
length/angle sensor (cable reel) and turn the axle of the length potentiometer
slowly( see arrow mark) till the displayed value to be the same with the actual
length.
Length sensor adjustment
（
see arrow above
）
