JLG 40RTS Operator Manual - Manual (Page 36)

SECTION 4 - MACHINE OPERATION
4-2 – JLG Sizzor – 3120825
4.3 ENGINE OPERATION
RTS SERIES SCISSOR LIFTS MANUFACTURED AFTER AUGUST
26, 1996 ARE EQUIPPED WITH A HYDRAULIC OIL TEMPERATURE
SWITCH THAT SHUTS DOWN THE ENGINE WHEN THE HYDRAU-
LIC OIL REACHES A TEMPERATURE OF APPROXIMATELY 111
DEGREES C (230 DEGREES F). THIS SHUT DOWN IS INTENDED
TO PROTECT THE HYDRAULIC SYSTEM AND ITS COMPONENTS
FROM DAMAGE DUE TO EXCESSIVE HEAT. HEAT MAY BUILD UP
DUE TO EXTENDED DRIVING, IN CONJUNCTION WITH HIGH
AMBIENT TEMPERATURES, ACTIVATING THIS SWITCH AND
SHUTTING DOWN THE MACHINE. IF THE MACHINE SHUTS
DOWN, ALLOW THE HYDRAULIC OIL TO COOL, THEN RESUME
NORMAL OPERATION.
NOTE: Initial starting should always be performed from the
Ground Control Station.
Starting Procedure
1. Check engine oil before attempting to start engine; if
necessary, add oil in accordance with Engine Manu-
facturers Manual.
2. Pull the red mushroom-type Ignition/Emergency
Stop switch at the Ground Control Station to the UP
position (ON).
3. Place the PLATFORM/GROUND SELECT switch to
the applicable position for desired control station
operation.
4. If operating a dual fuel machine, place the LP/GAS-
OLINE SELECT switch to the desired position.
NOTE: If 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.
NOTE: If starting machine from the platform control station,
place the engine speed control switch to the LOW
position prior to starting the engine.
5. If starting machine from ground controls, position
IGNITION/EMERGENCY STOP switch to ON and
depress START button and hold until engine starts.
If starting from platform controls, position POWER
ON switch to ON and depress START button and
hold until engine starts.
6. Check engine voltmeter when starting engine and
monitor gauge periodically during operation.
ALLOW ENGINE TO WARM-UP FOR A FEW MINUTES AT LOW
SPEED BEFORE APPLYING ANY LOAD.
7. After engine has had sufficient time to warm up, pro-
ceed with operation of unit.
4.4 RAISING AND LOWERING - (LIFTING)
DO NOT RAISE PLATFORM EXCEPT ON A HARD, LEVEL SUR-
FACE FREE OF OBSTRUCTIONS AND HOLES.
NOTE: This machine is equipped with a Enable Switch on
the side of the platform control console. This switch
must be depressed before activating DRIVE, LIFT,
or STEER functions from the platform control con-
sole.
Raising
1. Position MAIN POWER switch to desired position
and position POWER ON (platform) or EMERGENCY
STOP (ground) switch, as applicable, to ON. If
machine has been shut down, start engine and
allow warm-up period before beginning any lifting.
2. Pull LIFT toggle switch, then move it to UP and hold
until desired elevation is achieved.
Lowering
ENSURE SIZZOR ARM AREA IS FREE OF PERSONNEL PRIOR TO
LOWERING PLATFORM.
DO NOT ‘LIFT DOWN’ WITHOUT COMPLETELY RETRACTING
PLATFORM EXTENSION OR OPTIONAL TRAVERSING DECK.
Pull LIFT toggle switch, then move it to DOWN and hold
until desired elevation is achieved or until platform is fully
lowered.