JLG 120HX ANSI Operator Manual - Manual (Page 70)

SECTION 6 - EMERGENCY PROCEDURES
6-2 – JLG Lift – 3120685
Ground Control Station
The Ground Control Station is located on the right front
side of the turntable. The controls on this panel provide
the means for overriding the platform controls, and for
controlling the platform level, boom and swing functions
from the ground. Place the SELECT switch to GROUND
position and operate the proper switch to lift, swing, or
telescope the boom, or level the platform.
Auxiliary Power
A toggle type auxiliary power control switch is located on
the platform control station and another is located on the
ground control station. Operation of either switch turns on
the electrically driven auxiliary hydraulic pump. This
should be used in case of failure of the main power plant.
The auxiliary pump will operate boom lift, telescope and
swing. To activate auxiliary power:
1. Position the platform/ground SELECT SWITCH to
PLATFORM.
2. Position the EMERGENCY STOP switch to ON.
3. Depress and hold footswitch.
4. Operate appropriate control switch, lever or control-
ler for desired function and hold.
5. Position the AUXILIARY POWER switch to ON and
hold.
6. Release the AUXILIARY POWER switch, selected
control switch, lever or controller, and footswitch.
7. Position the EMERGENCY STOP switch to OFF.
To activate auxiliary power from the ground control sta-
tion:
1. Position the platform/ground SELECT SWITCH to
GROUND.
2. Position EMERGENCY STOP switch to ON.
3. Operate appropriate control switch or controller for
desired function and hold.
4. Position the AUXILIARY POWER switch to ON and
hold.
5. Release the AUXILIARY POWER switch, and appro-
priate control switch or controller.
6. Position the EMERGENCY STOP switch to OFF.
Remote Control Box
The remote control box is located behind the left rear
access door on the turntable. To use these controls, the
engine must be running and the SELECT SWITCH must
be in the ground position.
1. Pull the POWER/EMERGENCY STOP out.
2. To steer, push the steer switch to the left or to the
right.
3. To drive, push the drive switch to forward or reverse.
4. The speed control switch controls the speed of the
drive function. Rotate the switch to increase or
decrease the drive speed.
6.4 EMERGENCY OPERATION
Use of Ground/Remote 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.
Operator Unable to Control Machine
IF THE PLATFORM OPERATOR IS UNABLE TO OPER-
ATE OR CONTROL THE MACHINE FOR ANY REASON:
DO NOT OPERATE WITH PRIMARY POWER SOURCE (ENGINE) IF
PERSONS ARE PINNED OR TRAPPED. USE AUXILIARY POWER
INSTEAD.
1. Operate the machine from ground controls ONLY
with the assistance of other personnel and equip-
ment (cranes, overhead hoists, etc.) as may be be
required to safely remove the danger or emergency
condition.
2. Other qualified personnel on the platform may use
the platform controls with regular or auxiliary power.
DO NOT CONTINUE OPERATION IF CONTROLS
DO NOT FUNCTION NORMALLY.
3. Cranes, forklift trucks or other equipment which may
be available are to be used to remove platform
occupants and stabilize motion of the machine in
case machine controls are inadequate or malfunc-
tion when used.
Platform or Boom Caught Overhead
If the platform or boom becomes jammed or snagged in
overhead structures or equipment, do not continue opera-
tion of the machine from either the platform or the ground
until the operator and all personnel are safely moved to a
secure location. Only then should an attempt be made to
free the platform using any necessary equipment and per-
sonnel. Do not operate controls to cause one or more
wheels to leave the ground.