Crane operation
11.5 Crane operation with main boom
Operating manual 3 302 819 en 11 - 123
GMK3060
13.12.2018
Slewing The following requirements must be fulfilled before slewing:
– Houselock is switched off;
à p. 11 - 20.
– The superstructure must be unlocked;
à p. 11 - 18.
– Slewing is permissible with the current rigging mode;
à p. 12 - 76.
– The current rigging mode is shown on the RCL display.
– The counterweight is pre-tensioned;
à p. 12 - 70.
If slewing is not permissible with the current rigging mode, the slewing gear will
be locked.
You can adjust the sensitivity of the control levers to suit the operating conditions;
à Setting the characteristic curves for the control levers, p. 11 - 133.
s
G
Danger of overturning when slewing with an incorrectly set RCL!
Before slewing, always check that the current rigging mode is shown on the RCL
display.
His prevents slewing operations being enabled within the impermissible ranges,
which would cause the truck crane to overturn.
G
Risk of crushing during slewing!
Before slewing, operate the horn and ensure there are no persons in the slewing
range.
This prevents persons being crushed between the superstructure and the carrier
or between the superstructure and other parts.
S
Risk of the main boom buckling!
Do not accelerate the slewing speed to such a degree that the load starts
swinging.
S
Risk of damage due to overridden slewing gear shutdown!
If the lifting limit switch has been overridden, then the load torque related shut-
downs of the slewing gear will not be released (for example, if the pre-tensioning
pressure of the counterweights is too low). For this reason, do not start slewing
as long as the lifting limit switch is overridden.
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