Pericolo, Danger – JLG X14J Operator Manual User Manual
Page 92
‑ At the end of the emergency operation, loosen the knob on the proportional valve com‑
pletely and remove it, reclose the protection, if present, remove the key and put both the
devices away in their original positions.
6.5.5 E
MERGENCY DESCENT CONTROLLED FROM THE GROUND USING THE HAND PUMP IN THE EVENT
OF FAULTS ON ALL ENERGY SUPPLY SYSTEMS
This emergency descent function is only used if the electrical system and motors break down,
meaning one of the previous emergency operations cannot be performed.
The emergency descent from the ground can only be carried out using the hydraulic hand pump;
to move the basket, pump oil manually and simultaneously use the ground controls for the arm
movements.
To perform the emergency descent in the conditions described above, proceed as follows:
‑ Remove the proportional valve adjustment knob from the electric
components compartment and introduce it into the relevant adjust‑
ment screw (see photo), in the proportional valves compartment.
‑ Shift the diverter positioned on the manual pump to the position
relative to the movement of the aerial part;
‑ Screw the knob completely;
‑ Withdraw the key enabling the emergency descent and a key ope‑
ning the distributor controls’ protection, if any, from the engine
PERICOLO
I
F THIS DEVICE HAS BEEN USED TO MOVE THE MACHINE
,
BEFORE USING THE MACHINE AGAIN TO
WORK AT A HEIGHT IT IS COMPULSORY TO SET IT IN THE TRANSPORT CONFIGURATION
(
MACHINE
CLOSED AND ALIGNED
),
TO RAISE THE STABILISERS AND LOWER THEM AGAIN
.
ONLY THEN IT WILL BE
POSSIBLE TO WORK WITH THE MACHINE AT A HEIGHT CONTROLLING IT FROM THE BASKET
.
The sole purpose of the emergency descent from the ground is to operate in the event of
system breakdown and to bring the basket to the ground, all other uses are prohibited
During this procedure it is prohibited to perform any operations other than those described
above, for example to extend the telescopic arm or the jib arm, to move the stabilisers and
generally to perform operations that may cause the machine to lose stability.
A
DJUSTMENT
KNOB
X14JR0420113
88
BOOM LIFT MODELS X14J
JLG
DANGER