Crane operation
11.5 Crane operation with main boom
Operating manual 3 302 709 en 11 - 77
GMK5150L
12.01.2018
Lifting 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 - 129.
When the hoist drum is turning, you will notice a pulse on the slewing
indicator (1).
You can regulate the speed by moving the control lever and changing the
engine speed with the accelerator.
You can switch on high-speed mode for a higher speed;
à p. 11 - 113.
You can set the desired engine speed (idling speed) with button (1);
à p. 10 - 9.
s
G
Risk of accidents due to gaps in monitoring
Operation of the hoist will only be monitored fully if:
– The lifting limit switch is correctly installed;
à p. 12 - 139
– The lifting limit switch is not overridden;
à p. 11 - 82
– The lowering limit switch is correctly set;
à p. 11 - 82
G
Risk of accident by suspended loads
Never switch off the engine whilst a load is suspended. You must have the
control levers at hand in order to intervene at any time.
Always set down the load before you leave the crane cab.
Raising: Pull the control lever to the rear – symbol (3) is displayed.
Lowering: Pull the control lever to the front – symbol (2) is displayed.
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