16.4
CONTROLS TO
OPERATE THE CRANE
GRU FASSI
16.4 Load handling
Manoeuvres of the crane
Fig. 20a-b e 20c-d illustrate the configurations of the crane (and of the eventual hydraulic
extension) with the manoeuvres allowed and not allowed
by the device, in connection with the horizontal position
of the crane and extension outer booms.
(!) ATTENTION (!)
In the overload condition, if you simultaneously effect one
permitted and one non permitted manoeuvre you haven’t
movement. In the overload condition, before effecting a
permitted manoeuvre, it is necessary to return all the
levers to the neutral position.
(!) ATTENTION (!)
During load handling with the crane and with the crane
and hydraulic jib, in vertical configuration or close, the operator must strictly
refer to the loads indicated on the capacity plates since the limiting device
shows to be not particularly sensitive with vertical lifts.
Crane with activated limiting device by the intervention of the crane or the
hydraulic jib (overload condition) and with outer boom of the crane above the
horizontal line fig. 20a-20b
Manoeuvres not allowed:
- Inner boom descent
- Outer boom descent
- Extension of the crane extension boom sections (*)
- Lift and descent of the hydraulic jib
- Extension of the extension booms section of the jib
- Winch rope lift
- Movement of the hydraulic accessories (**)
NOTES:
(*)
If the overload condition has been activated by the hydraulic extension, the
extension of the crane boom sections is permitted.
(**) It is permitted only when coupled with permitted manoeuvres.
Manoeuvres allowed: all the manoeuvres that bring the load closer to the column and
therefore the overload
- Rotation in both directions
- Inner boom lift
- Outer boom lift
- Re-entry of the crane extension boom sections
- Re-entry of the jib extension boom sections
- Winch rope descent
Crane with activated limiting device by the intervention
of the crane or the hydraulic jib (overload condition)
and with outer boom of the crane under the horizontal
line fig. 20c-20d
Manoeuvres not allowed:
-- Inner boom lift
- Outer boom lift
- Extension of the crane extension boom sections (*)
- Lift of the hydraulic jib
- Extension of the extension booms section of the jib
- Winch rope lift
- Movement of the hydraulic accessories (**)
NOTES:
(*)
If the overload condition has been activated by the hydraulic
extension, the extension of the crane boom sections is permitted.
(**) It is permitted only when coupled with permitted manoeuvres.
Manoeuvres allowed: all the manoeuvres that bring the load closer to the
column and therefore the overload
- Rotation in both directions
- Inner boom descent
- Outer boom descent
- Re-entry of the crane extension boom sections
fig. 20d
fig. 20c
fig. 20a
WITHOUT HYDRAULIC JIB
fig. 20b
WITHOUT HYDRAULIC JIB
WITH HYDRAULIC JIB
WITH HYDRAULIC JIB
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