JLG X550AJ Operator Manual - Manual (Page 47)

SECTION 4 - MACHINE OPERATION
3128791 – JLG Lift – 4-3
NOTE: At low temperatures start the motor and let it run for a
few minutes, so that the hydraulic oil circulates and
reaches at least 50°F (10°C) before operating the plat-
form.
Gas/Diesel Engine Shutdown Procedure
1. Remove all load and allow engine to operate at low
speed for 3-5 minutes; this allows further reduction
of internal engine temperature.
2. Turn off the gas/diesel engine by using the gas/die-
sel engine button (item 11, Figure 4-3.) on the plat-
form/remote control box.
3. The shutdown procedure takes about 1 minute, wait
for complete shut-off (display off).
4. Push POWER/EMERGENCY STOP switches at the
platform and ground in, to the off position.
5. Turn engine key to off.
Electric Engine Starting Procedure - AC Voltage
Machine
ENSURE THE ELECTRICAL CIRCUIT BEING USED IS THE SAME
VOLTAGE AND FREQUENCY INDICATED ON THE ELECTRIC
ENGINE PLATE. USE AN AC EXTENSION CORD WITH SUFFICIENT
AMPERAGE CAPACITY TO PROPERLY POWER THE MACHINE.
CHECK THE EFFICIENCY OF THE GROUND ON THE AC CIRCUIT, IF
THE CIRCUIT IS NOT GROUNDED, INSERT A GROUND DIS-
CHARGER TO GROUND AND CONNECT IT TO THE GROUND CLAMP
ON THE MACHINE (ITEM 3 – SEE PHOTO).
1. Before connecting the machine to the electrical cir-
cuit, ensure the key on the gas/diesel engine is in
the OFF position.
2. Power the machine using a heavy duty AC power
cord with sufficient amperage capacity, through the
connector (item 2) positioned near the electric
engine.
3. Turn on the circuit breaker switch (item 1) positioned
behind the clear cover near the electric engine (—
symbol is ON - O symbol is OFF).
4. Start the electric engine using the engine start but-
ton at the ground/emergency control box. (item 5 -
Figure 4-1.) and operate machine.