JLG 450AJ ANSI Operator Manual - Manual (Page 39)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3120748 – JLG Lift – 3-9
Platform Station
NOTE: For engine starting, the footswitch must be in the
released (up) position. Footswitch must be actuated
in order for the platform controls to function.
NOTE: These machines have a 7 second delay timer. If
function has not been activated within 7 seconds
after depressing the footswitch, recycle footswitch.
1. Footswitch.
This feature makes it necessary to depress the foot-
switch to allow operation of the platform controls.
TO AVOID SERIOUS INJURY, DO NOT REMOVE, MODIFY OR DIS-
ABLE THE FOOTSWITCH BY BLOCKING OR ANY OTHER MEANS.
FOOTSWITCH MUST BE ADJUSTED SO THAT FUNCTIONS WILL
OPERATE WHEN PEDAL IS APPROXIMATELY AT ITS CENTER OF
TRAVEL. IF SWITCH OPERATES WITHIN LAST 1/4" OF TRAVEL,
TOP OR BOTTOM, IT SHOULD BE ADJUSTED.
2. Power/Emergency Stop.
An on-off Power/Emergency Stop switch and a sep-
arate Engine Start/Auxiliary Power toggle switch on
the platform console supply electrical power to the
starter solenoid, when the ignition switch is placed in
the ON position and the ENGINE START switch is
push forward.
3. Enable Indicator. (Green)
This green illuminator indicates that the footswitch is
depressed and the platform controls are ready for
use. To enable the controls, depress the footswitch
and select any function within seven seconds. The
controls will then remain active as long as there is
not a delay of seven seconds between stopping one
function and starting the next one. If the seven sec-
ond interval is exceeded, the enable light will go out
and the controls will not operate. To enable the con-
trols again, remove your foot from the footswitch
and depress the footswitch.
4. Travel Warning Horn.
A push-type horn switch supplies electrical power to
an audible warning device when pressed.
5. Tilt Alarm Warning Light. (Orange)
This orange illuminator indicates that the chassis is
on a slope (over 5 degrees). If illuminated when
boom is raised or extended, retract and lower to
below horizontal then reposition machine so that it is
level before extending boom or raising boom above
horizontal. If the boom is above horizontal and the
machine is on a 5 degree slope, an alarm will sound
and Creep is automatically activated.
IF ILLUMINATED WHEN BOOM IS RAISED OR EXT ENDED,
RETRACT AND LOWER TO BELOW HORIZONTAL THEN REPOSI-
TION MACHINE SO THAT IT IS LEVEL BEFORE EXTENDING
BOOM OR RAISING BOOM ABOVE HORIZONTAL.
6. Tower or Lower Boom Lift.
The three position center-off toggle switch provides
for raising and lowering of the lower and mid booms
when positioned up or down.
NOTE: Main Lift, Swing, and Drive control levers are spring-
loaded and will automatically return to neutral (off)
position when released.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY
CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING
PLATFORM MOVEMENT DO NOT RETURN TO THE OFF OR NEU-
TRAL POSITION WHEN RELEASED.
7. Main Lift/Swing Controller.
The dual axis joystick is provided for main lift and
swing. Push forward to lift up, pull backward to lift
down. Move right to swing right, move left to swing
left. Moving the joystick activates switches to pro-
vide the functions selected. Proportional control of
these functions can be attained by using the Func-
tion Speed knob.
NOTE: Main lift and swing functions may be selected in
combination. The handle features a round gate so
that maximum speed is reduced when multiple func-
tions are selected.