JLG 80HX_HX+6 Operator Manual - Manual (Page 77)

SECTION 6 - EMERGENCY PROCEDURES
6-2 – JLG Lift – 3120890
3. Operate appropriate control switch or controller for
desired function and hold.
4. Position AUXILIARY POWER switch to ON and hold.
5. Release AUXILIARY POWER switch, and appropriate
control switch or controller.
6. Position POWER/EMERGENCY STOP switch to OFF.
Manual Descent
The manual descent valves are used, in the event of total
power failure, to retract and lower the boom using gravity.
The manual descent valves are located on the right side of
the turntable (directly below the ground control box). This
system should be used if there is a total power failure
since the valves will permit use of gravity to retract and
lower the boom. The procedures for use of the valves for
descent and retraction are given adjacent to the valves.
6.4 EMERGENCY OPERATION
Use of Ground Controls
KNOW HOW TO USE THE GROUND CONTROLS IN AN
EMERGENCY SITUATION.
Ground personnel must be thoroughly familiar with the
machine operating characteristics and the ground control
functions. Training should include operation of the
machine, review and understanding of this section and
hands-on operation of the controls in simulated emergen-
cies.
Figure 6-1. Manual Descent Valves