Crane operation
11.5 Crane operation with main boom
Operating manual 3 302 736 en 11 - 85
GMK4090
xx.xx.xxxx
Raising and
lowering
You can adjust the sensitivity of the control levers to suit the operating con-
ditions;
à Setting the characteristic curves for the control levers, p. 11 - 127.
You can regulate the speed by moving the control lever and changing the
engine speed with the accelerator.
H
The maximum derricking speed will automatically be reduced as the system
length is increased. If you now reduce the working radius (for example, by
retracting the telescoping), the derricking speed will automatically be
increased again.
If when the main boom is being set down a symbol (1) is displayed:
• Correct the position of the slewable spotlights until the symbol (1) goes
out;
à p. 11 - 128
You can switch on high-speed mode for a higher speed;
à p. 11 - 111.
s
G
Risk of accident due to unexpected crane movements
If assigned more than one function, check whether the
Derricking control
lever function is switched on before you move the control lever for derrick-
ing.
This prevents accidents due to unexpected crane movements.
Lowering: Push the control lever to the right – the main boom is low-
ered.
Raising: Push the control lever to the left – the main boom is raised.
S
Risk of damage to the slewable spotlights
Make allowances for the position of the slewable spotlights before setting
down the main boom.
This is prevent a collision between the working spotlights and the engine
cover.
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