Crane operation
11.5 Crane operation with main boom
11 - 114 3 302 736 en Operating manual
GMK4090
xx.xx.xxxx
Switching on the
slewing gear
After the ignition is switched on, all of the power units will be switched off
and the lamps in the corresponding buttons will light up only dimly.
• Press the button (1) once.
– The lamp in button (1) will light up brightly.
– Symbol (2) is green if the slewing gear is switched on.
H
If an rigging mode has been entered for the working position 0° to the rear or
Free-on-wheels, an RCL shutdown will occur after switching on the slewing
gear, and slewing will be disabled. To acknowledge the shutdown, you
must either switch off the slewing gear or set down the load and enter an
rigging mode for the 360° working range.
Releasing the
slewing gear
brake
–With the
Brake pedal function
The slewing gear brake is released when you switch on the slewing gear.
–With the
Control lever function
The slewing gear brake is released as soon as you move the control lever (2).
Lamp (1) will extinguish if the slewing gear brake has been released.
Applying the slew-
ing gear brake
–With the
Brake pedal and the Control lever functions
The slewing gear brake will engage when you switch off the slewing gear;
à p. 11 - 118.
–With the
Control lever function
The slewing gear brake will also be applied if the control lever (2) is in its
initial position.
The lamp (1) will light up if the slewing gear brake has been applied.
Releasing locked
slewing gear
You can unlock the slewing gear if it has been locked.
• Press and hold the button (1) – the slewing gear is unlocked. The speed is
reduced to 6%.
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