Manitowoc Grove GMK4100L-1 Operating Manual page 664

Crane operation
11.5 Crane operation with main boom
Switching on
the main hoist
Lifting and
lowering
G
G
11 - 76
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.
•
Check whether the auxiliary hoist is switched off and therefore secured
against unintentional operation.
– The lamp in button (1) should light up only dimly.
– Symbol (2) must be red.
•
Press the button (1) once.
– The lamp in button (1) will light up brightly.
– Symbol (2) is green when the main hoist is switched on.
•
Check that the current reeving of the main hoist is displayed, for example, 4.
Correct the reeving if necessary;
You can adjust the sensitivity of the control levers to suit the operating
à
Setting the characteristic curves for the control levers , p. 11 - 129.
conditions;
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;
– The lifting limit switch is not overridden;
– The lowering limit switch is correctly set;
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.
à
p. 11 - 39.
3 302 690 en
à
p. 12 - 120
à
p. 11 - 82
à
p. 11 - 82
Operating manual
GMK4100L-1