Commissioning 
4.3.1  Zero point adjustment of the main boom angle sensor 
Move crane to 0° working position (boom back), stabilise and align precisely.  
Luff boom to a position which permits complete retraction. 
Preconditions: 
 
Calling up function from adjustment menu.  
 
 
1) 
  Retract main boom fully. 
  Confirm with 
 key when completed. 
2) 
  Luff main boom down to 0°  
  Confirm with   key when completed. 
3) 
  Use spirit level to check precise horizontal alignment 
of the boom. 
  Confirm with 
 key when completed. 
  Zero point is re-adjusted. 
4) 
Angle direction is checked. To do this: 
  Luff main boom up by at least 5° . 
  Confirm with 
 key when completed. 
5) 
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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