JLG X500AJ Operator Manual - Manual (Page 102)

SECTION 5 - EMERGENCY PROCEDURES
5-14 – JLG Lift – 3121636
Using The Emergency Descent In The Case Of An Outrigger
Losing Contact With The Ground
One or more of the outriggers may loose contact with the
ground which will result in the platform/remote control box
functions being inoperable except for emergency lowering.
To restore platform/remote control box functions, lower and
retract the booms and then reposition the machine and
properly set the outriggers.
Use the emergency descent from the platform if possible by
using the following sequence, fully retract main boom, fully
lower jib, fully lower tower boom, and fully lower main
boom.
If this is not possible, have a properly trained person on the
ground bypass the platform safety devices and allow the
operator in the platform to lower and retract the booms or
allow emergency manual operations to bring the platform
back to the ground.
1. Locate and use the safety device bypass key as
stated above.
2. Activate the safety device bypass by turning the
key in a counterclockwise direction and hold it in
position (see decal).
3. The safety devices BYPASS icon will
appear on the platform/remote con-
trol box display.
4. Operate the machine from the platform/remote
control ONLY carrying out operations that allow
the tower boom lowering, main boom retract and
jib lowering. The main boom must be fully
retracted prior to operating swing and main boom
lowering functions.
NEVER PERFORM OPERATIONS DIFFERENT TO THOSE LISTED OR THAT
CAN IN SOME WAY REDUCE THE STABILITY OF THE MACHINE. THE ORDER
OF THE BOOM MOVEMENTS MUST BE DONE IN A WAY TO PREVENT ANY
OPERATION THAT REDUCES THE STABILITY OF THE MACHINE.
5. Once the booms and jib are fully lowered and
aligned, release the key and follow the instructions
above to secure the key.