JLG 120-SXJ ANSI Operator Manual - Manual (Page 37)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3121104 – JLG Lift – 3-7
Platform Station
NOTE: For engine starting, the footswitch must be in the
released (up) position. Footswitch must be actuated
in order for controls to function.
1. Footswitch
This feature makes it necessary to depress the foot-
switch to allow operation of the controls.
TO AVOID SERIOUS INJURY, DO NOT REMOVE, MODIFY OR DIS-
ABLE THE FOOTSWITCH BY BLOCKING OR ANY OTHER MEANS.
IMPORTANT
THE FOOTSWITCH MUST BE ADJUSTED SO THAT FUNCTIONS
WILL OPERATE WHEN THE PEDAL IS APPROXIMATELY AT ITS
CENTER OF TRAVEL. IF THE SWITCH OPERATES WITHIN LAST
1/4" OF TRAVEL, TOP OR BOTTOM, IT SHOULD BE ADJUSTED.
2. Power/Emergency Stop
An on-off IGNITION/EMERGENCY STOP switch and
a separate Engine Start switch on the platform con-
sole supply electrical power to the starter solenoid,
when the power switch is positioned to “on” (pulled
out) and the Engine Start switch is actuated. Posi-
tioning the switch to off while operating the machine
will stop all functions and shut down the engine.
3. Engine Start/Auxiliary Power
The Engine Start/Auxiliary Power switch is a momen-
tary contact switch. With the POWER/EMERGENCY
STOP switch in the on (pulled out) position and the
switch in the Engine Start position, electrical power
is supplied to the start solenoid.
NOTE: Auxiliary power will be disabled if the engine is run-
ning.
When placing the switch in the Auxiliary Power posi-
tion, the switch energizes the electrically operated
hydraulic pump, when actuated. The switch must be
held on for duration of auxiliary pump use.
The auxiliary pump functions to provide sufficient oil
flow to operate the basic machine system should the
main pump or engine fail. The auxiliary pump will
operator boom lift, telescope and swing.
It should be noted that the functions will operate at a
slower than normal rate because of lower hydraulic
flow.
IMPORTANT
WHEN OPERATING ON AUXILIARY POWER, DO NOT OPERATE
MORE THAN ONE FUNCTION AT THE SAME TIME. SIMULTA-
NEOUS OPERATION CAN OVERLOAD THE AUXILIARY PUMP
MOTOR.
NOTE: The intended function of the auxiliary power is to
lower the platform in the event of primary power fail-
ure. Determine the reason for primary power failure
and have the problem corrected by a qualified ser-
vice technician.
4. Warning Horn
A push-type HORN switch, when pressed, supplies
electrical power to activate the horn.
5. Tilt Indicator Light.
This red indicator lights to indicate 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 the machine so that
it is level before extending the boom or raising the
boom above horizontal.
IF THE CHASSIS OUT OF LEVEL WARNING LIGHT IS ILLUMI-
NATED WHEN THE BOOM IS RAISED OR EXTENDED, RETRACT
AND LOWER THE PLATFORM TO BELOW HORIZONTAL THEN
REPOSITION THE MACHINE SO IT IS LEVEL BEFORE EXTENDING
BOOM OR RAISING THE BOOM ABOVE HORIZONTAL
6. Tilt Alarm
Tilt alarm will sound when machine is tilted 5° and
boom is above horizontal.