Commissioning 
4.3.3  Sensor adjustment, main boom length sensor  
Check mounted length- and/or length/angle encoder on the main boom for sufficient pretension and 
rope length.  
Move crane to 0° working position (boom back), stabilise and align precisely.  
Luff boom to a position which permits full extension and retraction. 
Preconditions: 
 
Calling up function from adjustment menu.  
 
 
1) 
  Retract main boom fully. 
  Confirm with 
 key when completed. 
2) 
 
  Adjust mechanical zero point on the length sensor 
 
3) 
  Extend main boom fully. 
  Confirm with   key when completed. 
  Zero point is re-adjusted. 
4) 
Sensor is now adjusted. 
  Confirm next with 
 key. 
  Adjustment menu appears. 
  Select next sensor for adjustment as required. 
 
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