Rigging work
12.7 Rigging/unrigging the counterweight
Operating manual GMK 6400 3 112 993 en 12 - 87
12.07.2013
Counterweight
safety valve
Closing safety valve
After you have locked the counterweight on
the turntable:
• Close the valve – lever (1) at right angles to
the line.
The locking pins are secured against acciden-
tal activation.
Opening the safety valve
Before extending or retracting the locking
pins:
• Open the valve – lever (1) parallel to the line.
The locking pins can now be moved using the
hand-held control.
• Close the safety valve after extending the
locking pins.
G
Risk of accident when the safety valve is open
Always close the safety valve if the counterweight is locked to the turntable.
This prevents the counterweight from falling down due to unintentional
actuation of the locking pins.
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