Hirschmann HC3901 - 7. INSPECTION MAINTENANCE AND CONSIDERATIONS; Inspection and Routine Maintenance; System Considerations and Adjustments

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7 INSPECTION MAINTENANCE AND CONSIDERATIONS
7.1 Inspection before Operation
 Check all components of the LMI system to make sure no one damages or breaks off.
 Turn the power on and detect whether the display is normal or there is warning, error indication and
so on.
 After display works normally, detect whether all the system works normally and whether the main
boom angle, work radius and load display are the same as the actual ones.
7.2 Routine Maintenance
 Check the angle transducer as to oil leakage.
 Check the insulating layer of all the cables. If the insulating layer or the wire inside damaged, please
replace new one immediately.
 Check the cable reel as to sufficient tight or not.
 Clean the display regularly to make it clear.
7.3 Routine Consideration
 Prevent the central unit (display)、power supply cabin、transducers from severely shake.
 Each part of the LMI system including central unit, console, transducers etc had been accurate adjusted
and checked by protection technology before leaving factory. Anyone not be trained professionally is
prohibited from dismantling the housing. Otherwise, the system will probably not work normally because
of humidity and dust getting into the components.
7.4 Buzzer Alarms
The buzzer alarms if the system shows normal without any fault codes after started. At this moment,
exam whether the conjunction between cable and A2B is junction off or short circuit of water-in.
7.5 Angle Sensor Adjustment
Use the angle instrument to measure if the displayed value is the
same when the actual angle is between 0°and 70°. If the
displayed value or radius is not the same with the actual value,
operators should adjust the angle transducer.
Release the three bolts (see the left picture)，Slowly turn the
angle transducer till the displayed value accords with the actual
value and then tight the three bolts again.