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UT
Handbook for Use and Maitenance – 50000 WB-80-87-95
Edition
01/11
Revisione
00
22
50000WB_e111_E.doc
2.5 - EXTENDING THE BOOM
Before the crane boom can be moved, the lever n° 3 (Picture 13) must be
placed in position crane (lever must be moved up in order to pressurise the control
valves located on the top seat).
DANGER OF FOLLING OBJECTS
Always verify that access stairs to the control
seat, as well as handles and protections are in
good shape before reaching for the top seat. In
case the crane should be equipped with catwalk,
be advised that the catwalk can be used only as
an access to the crane top seat or for service
jobs. The catwalk has been engineered for this
porpoise only, it can stand the weight of one
person only (100 Kg).
It is expressly
forbidden to have more than one person on
the catwalk at any time
. Walking on the
catwalk must be made with extreme care paying
attention to the side reinforcements (picture 7).
The levers shall not be used as a climb support when reaching for the control
station, on the top seat.ì, they could cause uncontrolled movements of the boom.
While reaching for the top seat make sure that the truck engine is turned off.
It prevents uncontrolled movements of the boom. The truck engine must be started
with the push button located on the control pane, after the operator is correctly
seated in the correct working position. The same is valid when the operator is leaving
the control position of the top seat, the truck engine must be turned off before the
operator begins to descend from the top seat.
Picture 17