Commissioning 
4.3.2  Zero point adjustment, slewing angle sensor  
Move crane to 0° working position (boom back), stabilise and align precisely.  
Luff boom to a position which permits slewing to the working position. 
Preconditions: 
 
Calling up function from adjustment menu.  
 
 
1) 
  Slew main boom to the precise mechanical 0° 
position and luff to a position which permits slewing 
to the working position. 
  Confirm with   key when completed. 
  Zero point is re-adjusted. 
2) 
Angle direction is checked. To do this: 
  Rotate main boom to the right by at least 5°. 
  Confirm with   key when completed. 
3) 
Sensor and angle direction are now adjusted. 
  Confirm next with 
 key. 
  Adjustment menu appears. 
  Select next sensor for adjustment as required. 
 
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