Operating elements for crane operation
8.2 Brief description of the operating elements
Operating Instructions GMK5250L 3 302 633 en 8 - 107
27.09.2017
Lifting cylinder position display
The current position of the counterweight lift-
ing cylinders is shown by different symbols:
à p. 11 - 86
Extending/retracting the lifting cylinders
Pre-tensioning pressure display
s
1 green – extended
2 green – retracted
3 yellow – intermediate position
4 violet – error
5 Extended length in percent (%)
1 Extend:
–Display (3) and (4) yellow
Select symbol and confirm – slewing is
disabled after extending
2 Retract:
Select symbol and confirm – after reach-
ing the end position, the counterweight is
pre-tensioned
The movement stops after the button is
released and when an end position is
reached
à p. 11 - 86.
– Green: Pre-tensioning pressure reached
–Red: Pre-tensioning pressure too low – pre-tension the counterweight
à p. 11 - 87
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