JLG 400CRT ANSI Operator Manual - Manual (Page 32)

SECTION 4 - MACHINE OPERATION
4-2 – JLG Lift – 3121110
4.3 ENGINE OPERATION
Platform/Ground Select Switch
The power selector switch functions to direct electrical
power to the desired control station. With the switch in the
ground position, power is supplied to the emergency stop
switch at the ground control station. When the switch is in
the platform position, power is supplied to the emergency
stop switch at the platform control station. The switch
should be in the off position when parking the machine
overnight.
Emergency Stop Switch
This switch, when in the on (out) position, provides electri-
cal power to the ground controls or platform controls, as
applicable. In addition, the switch can be used to turn off
power (push the switch IN) to the function controls in the
event of an emergency.
Starting Procedure
NOTE: Initial starting should always be performed from the
Ground Control Station.
1. Check engine oil before attempting to start engine; if
necessary, add oil in accordance with Engine Manu-
facturers Manual.
2. Pull out the red EMERGENCY STOP switch (ON).
3. Position the PLATFORM/GROUND SELECT switch
to the desired operating control station (PLATFORM
or GROUND).
4. If operating a dual fuel machine, place the LPG/
GASOLINE SELECT switch to the desired position.
NOTE: If the LPG system is selected, ensure that the hand
valve on the LPG supply tank is opened prior to
attempting to start the engine.
IF ENGINE FAILS TO START PROMPTLY, DO NOT CRANK FOR AN
EXTENDED PERIOD. SHOULD ENGINE FAIL TO START ONCE
AGAIN, ALLOW STARTER TO “COOL OFF” FOR 2 TO 3 MINUTES.
IF ENGINE FAILS TO START AFTER SEVERAL ATTEMPTS, REFER
TO ENGINE MAINTENANCE MANUAL.
5. If starting the machine from the ground controls,
position the EMERGENCY STOP switch to ON and
depress the START button and hold until the engine
starts. If starting from the platform controls, position
the platform EMERGENCY STOP switch to ON and
depress the START button and hold until the engine
starts.
NOTE: After the engine is started, depressing the start
switch will bring the engine speed up to reduce warm
up time.
ALLOW ENGINE TO WARM-UP FOR A FEW MINUTES BEFORE
APPLYING ANY LOAD.
6. After the engine has had sufficient time to warm up,
proceed with operation of the unit.
4.4 RAISING AND LOWERING
DO NOT RAISE PLATFORM EXCEPT ON A HARD, LEVEL SUR-
FACE FREE OF OBSTRUCTIONS AND HOLES.
Raising
1. With the engine running, place the power select
switch to desired position (platform or ground).
2. Position the applicable emergency stop Switch to
the on position.
3. If operating from the ground controls, position the lift
switch to up and hold until desired elevation is
achieved. If operating from the platform controls,
press the lift switch then move the joystick to up and
hold until desired elevation is reached. If the lift
switch is not activated within 3 seconds after the trig-
ger switch is pressed, power is removed from the
circuit and the lift select switch must be pressed
again before lifting can be performed.
Lowering
ENSURE SCISSOR ARM AREA IS FREE OF PERSONNEL PRIOR
TO LOWERING PLATFORM.
ENSURE PLATFORM EXTENSION IS COMPLETELY RETRACTED
PRIOR TO LOWERING PLATFORM.
If operating from the ground controls, position the lift
switch to down and hold until desired elevation is
achieved or until platform is fully lowered. If operating
from the platform controls, press the lift switch and then
move the joystick to down direction and hold until desired
elevation is reached or until platform is fully lowered.
DO NOT ‘LIFT DOWN’ WITHOUT COMPLETELY RETRACTING THE
PLATFORM EXTENSION.