Manitowoc Grove GMK4100L-1 Operating Manual page 704

Crane operation
11.5 Crane operation with main boom
Switching on the
slewing gear
H
Releasing the
slewing gear brake
Applying the
slewing gear
brake
11 - 116
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.
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.
– 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.
– 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 - 120.
– 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.
3 302 690 en Operating manual
GMK4100L-1