Manitowoc Grove GMK6300L Operating Manual page 677

Lowering the
main boom to
a horizontal
position
G
Operating Manual GMK6300L
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.
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.
•
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 .
3 112 xxx en
Crane operation
11.3 Crane operation with main boom
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