Rigging work
12.7 Rigging/unrigging the counterweight
Operating manual GMK 6400 3 112 993 en 12 - 85
12.07.2013
• Closing the safety valve; à p. 12 - 87.
Retracting the lifting cylinders
• Press the button (1). The lamp lights up.
• Press the key combination (2) until the lifting cylinder is fully retracted.
The counterweight is now completely unrigged.
Unrigging
counterweight
To unrig the counterweight, you must extend the lifting cylinder in order to
secure the counterweight against falling down. Then you must unlock the
counterweight on the turntable and then extend the lifting cylinder into the
15 t base plate in order to lower the counterweight onto the counterweight
platform.
Extending the lifting cylinders
• Press the button (1). The lamp lights up.
• Press the key combination (2), until the lifting cylinders are extended into
the cylinder mounts on the counterweight platform.
s
G
Risk of accident from falling counterweight
Always close the safety valve if the counterweight is locked to the turntable.
This prevents the locking pins, for example, from being unintentionally
retracted because a button is erroneously pushed, causing the entire coun-
terweight to fall down.
G
Risk of accident from falling counterweight
Also make sure that the hydraulic cylinders are fully extended into the
cylinder mounts on the counterweight platform. This prevents the counter-
weight from falling when the locking pins are retracted.
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