JLG X23J Operator Manual User Manual
Page 46
3.3 C
YLINDER CUT
‑
OFF VALVES
The outrigger cylinders have a double cut‑off valve, which in case of plant breakdown or
pipe breakage, cut‑off the cylinder preventing dangerous platform instability situations. All
cylinders that move the aerial part of the platform structure are equipped with a cut‑off
valve, which in case of plant breakdown or pipe breakage cut‑off the cylinder preventing the
basket falling due to gravity.
These valves are calibrated in the platform inspection phase by qualified staff working
and must not be tampered with for any reason.
3.4 A
ERIAL PART ALIGNMENT PHOTOCELLS OF THE STRUCTURE AND MACHINE BASE
The platform has two reflection safety photocells that check that the aerial part of the machi‑
ne structure is completely lowered and aligned with the base and that the telescopic arm is
completely retracted.
When these conditions do not occur, a signal is given that disables outrigger movement.
BOOM LIFT MODELS X23J
JLG
42
X23JR0620113