Emergency Descent Controlled From The Ground Using The Hand Pump In The Event Of Faults On All Energy Supply Systems - JLG X17JPLUS Operator, Safety, And General Maintenance Manual

USING THE MACHINE
11.5.4.Emergency 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 per‐
formed.
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.
The emergency descent from the ground can only be carried out using the hy‐
draulic hand pump; to move the basket, pump oil manually and simultaneously
use the ground controls for the arm movements.
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.
To perform the emergency descent in the conditions described above, proceed as
follows:
Fig. 117 Battery cut out switch
118 Boom Lift Models X17JPLUS
MUX17JP021602
1 Position on OFF the en‐
gine key and disconnect
completely the machine
from the battery remo‐
ving the battery cut‐off.