16.4 Load handling
Any block condition requiring the distributor unloading does not allow the use of
hydraulic accessories (bucket, rotator, …); these could however be activated when
coupled with permitted manoeuvres.
16.4.1 "Block due to overload condition"
According to the type of block and to the crane configuration, the only manoeuvres
permitted are the ones allowing a reduction of the overload, as follows:
Crane in overload condition with outer boom and hydraulic jib under the hori-
zontal line
Manoeuvres not allowed
- Inner boom lift
- Outer boom lift
- Exit of the crane extension boom sections (if the overload is created by the
hydraulic jib, it can still operate)
- Hydraulic jib lift (if crane is equipped with)
- Exit of the jib extension boom sections (if crane is equipped with)
- Winch lift (if crane is equipped with)
Crane in overload condition with outer boom under the horizontal line and
hydraulic jib horizontal
Manoeuvres not allowed
- Inner boom lift
- Outer boom lift
- Exit of the crane extension boom sections (if the overload is created by the
hydraulic jib, it can still operate)
- Exit of the jib extension boom sections (if crane is equipped with)
- Winch lift (if crane is equipped with)
Crane in overload condition with outer boom under the horizontal line and
hydraulic jib over the horizontal line
Manoeuvres not allowed
- Inner boom lift
- Outer boom lift
- Exit of the crane extension boom sections (if the overload is created by the
hydraulic jib, it can still operate)
- Hydraulic jib descent (if crane is equipped with)
- Exit of the jib extension boom sections (if crane is equipped with)
- Winch lift (if crane is equipped with)
Crane in overload condition with outer boom horizontal and hydraulic jib under
the horizontal line
Manoeuvres not allowed
- Inner boom lift (only if the overload is created by the hydraulic jib)
- Outer boom lift (only if the overload is created by the hydraulic jib)
- Exit of the crane extension boom sections (if the overload is created by the jib
ram, it can still operate)
- Hydraulic jib lift (if crane is equipped with)
- Exit of the jib extension boom sections (if crane is equipped with)
- Winch lift (if crane is equipped with)
16.4
CONTROLS TO OPERATE
THE CRANE
GR4_5 - EVOLUTION
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