Crane operation
11.3 Crane operation with main boom
Operating Manual GMK6300L 3 112 xxx en 11 - 65
xx.xx.xxxx
Lowering the
main boom to
a horizontal
position
Lowering the boom out of the working range is enabled only without a load
and if there is a rigging table for the current rigging mode.
Enabling is automatic, the rigging tables cannot be entered manually.
The same tables apply to raising the boom outside of the working range.
• Set down the load.
• Lower the main boom.
The RCL switches off the lowering procedure at about 10 – 15° if there are
no rigging tables for the current rigging mode. In this case, you must bring
the crane into a rigging mode for which a rigging table exists (e.g. retract-
ing, setting down the load, other superstructure position).
All rigging modes for which rigging tables exist can be found in the
Lifting capacity tables.
G
Risk of overturning if the RCL is overridden!
Do not under any circumstances override the RCL. If the RCL shuts down
the lowering procedure, the truck crane is in a condition in which the main
boom may not be lowered beyond the working range (e.g. the load or work-
ing radius is too large).
The truck crane will overturn if you continue to lower the boom with the
RCL overridden.
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