H1.5 EMERGENCY exclusion screw of the lifting moment
limiting device (crane with standard distributor)
Firstly remove the protection guard. Then unscrew the fixing screws (13 mm
hexagonal spanner).
The electro-valve is installed with an exclusion screw which must only be
used in case of emergency, testing or other abnormal situations when it is
not possible to carry out any of the movements allowed by the limiting
device (This may occur when the extension booms are fully folded and
the load is particularly heavy and bulky).
Only in these situations it is permitted to remove the lead seal; slacken
the lock nut of the screw fig. 23 (14 mm hexagonal spanner), tighten the
screw (without forcing) (5 mm allen key) and re-tighten the lock nut.
H1.6 EMERGENCY tap lever of the lifting moment
limiting device (crane with Danfoss distributor)
Firstly remove the protection guard. Then unscrew the fixing screws (13 mm
hexagonal spanner).
Each device is fitted with an emergency tap lever (fig. 24) to be used in
the event of a black-out, electrical or hydraulic malfunctions or whenever
the lifting moment limiting device makes it impossible to use any controls
when handling a load (this may occur when the extension booms are fully
folded and the load is particularly heavy and bulky).
Only In these situations it is permitted to remove the lead seal placed on
the tap lever and place it in the closed position.
(!) ATTENTION (!)
Activation of the exclusion device or of the emergency tap lever.
When the operator uses this device, it means that he wishes to override the
lifting moment lifting device in order to make some manoeuvres (which
would be impossible with the device active) that bring the moment to within
the maximum level, but involve an overload condition. In such an emergency
condition (where the lifting moment limiting device has been disabled), the
operator, who is the main responsible for the machine safety, must:
- carefully consider the manoeuvres required to return to normal working
conditions;
- calmly and carefully assess the type and scale of the hazards arising
from these manoeuvres and the possible reaction of the crane (tipping
over, frame overload, uncontrolled fall of the load due to a hydraulic
system overload etc.);
- make all movements as slowly as possible to reduce the dynamic
overload to the minimum.
After such emergency operations and prior to re-use of the crane, you must
immediately go to FASSI authorised Center for testing the structure and re-
sealing of the device.
(!) Interferences with the valves or removal of the lead seal release the
FASSI GRU IDRAULICHE
from any responsibility and invalidate the warranty.
(!) ATTENTION (!)
The presence of the lifting moment limiting device does not release the
user from the obligation to respect what is indicated on capacity plates
and lifting curves.
H1.5
CONTROLS TO
OPERATE THE CRANE
F 170A
27
fig. 23
fig. 24
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