Crane operation
11.3 Crane operation with main boom
Operating manual GMK 6400 3 112 993 en 11 - 57
12.07.2013
Switching on the
main hoist
After the ignition is switched on, all of the power units will be switched off
and the lamps in the corresponding buttons will only light up 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 (1) button once.
– The lamp in button (1) will light up brightly.
– Symbol (2) is green when the main hoist is switched on.
• On the RCL, check whether the lamp I is on.
If lamp
I flashes, switch over the display; Ã p. 11 - 33.
• Check that the current reeving of the main hoist is displayed, e.g. 10.
Correct the reeving if necessary;
à p. 11 - 29.
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 - 108.
s
G
Risk of accident 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 - 126
– The lifting limit switch is not overridden;
à p. 11 - 62
– The lowering limit switch is correctly set;
à p. 11 - 62
G
Risk of accident by suspended loads
Never turn off the engine with a load 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.
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