Crane operation
10.5 Crane operation with main boom
10 - 80 3 302 633 en Operating Instructions GMK5250L
27.09.2017
• Check whether the current reeving of the auxiliary hoist is displayed,
e.g. 6. Correct the reeving if necessary;
à p. 10 - 39.
Lifting and
lowering
You can adjust the sensitivity of the control levers to suit the operating
conditions;
à Setting the characteristic curves for the control levers, p. 10 - 126.
Maximum permis-
sible hoist rope
speed
The maximum permissible hoist rope speed is limited automatically
depending on the degree of utilisation of the lifting capacity. The scale of the
limitation is specified in the supplied lifting capacity table.
The current speed reduction is displayed in the start menu;
à RCL display,
p. 8 - 20.
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.
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 rigged;
à p. 11 - 120,
– the lifting limit switch is not overridden;
à p. 10 - 82,
– the lowering limit switch is correctly set;
à p. 10 - 82.
G
Risk of accidents due to 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.
Raise: 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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