JLG X17J Plus Operator Manual - Manual (Page 43)

3.3 CYLINDER STOP VALVES
The stabiliser cylinders have a double stop valve which in case of system breakdown or hose
breakage stops the cylinder preventing dangerous platform instability situations.
All cylinders that move the aerial part of the platform structure are fitted with a stop valve
which in case of system breakdown or hose breakage stops the cylinder preventing the
basket from falling due to gravity.
These valves are calibrated in the platform inspection phase by the constructor and must
not be tampered with for any reason.
3.4 ALIGNMENT PHOTOCELLS ON THE AERIAL PART OF THE STRUCTURE AND
THE BASE OF THE MACHINE
The platform has two safety photocells that ensure that the aerial part of the machine is com‑
pletely lowered and aligned with the base and that the telescopic arm is completely retrac‑
ted.
When these conditions are not met, a signal is sent that disables the movement of the stabili‑
sers.
X17JPR0020413
BOOM LIFT MODELS X17JPLUS
JLG
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