JLG 150HAX Operator Manual - Manual (Page 38)

SECTION 3 - MACHINE CONTROLS AND INDICATORS
3-2 – JLG Lift – 3121213
2. Platform/Ground Select Switch
A three-position, center-off PLATFORM/GROUND
SELECT SWITCH supplies operating power to the con-
trols on the platform control console, when positioned to
PLATFORM. With the switch in GROUND position,
power is shut off to the controls at the platform station,
and only the controls on the ground control panel and
remote box are operable.
NOTE: With the PLATFORM/GROUND SELECT SWITCH in the
center position, power is shut off to controls at both oper-
ating stations.
3. Axles Set Indicator Light
The AXLES SET indicator light is illuminated when the
axles are fully extended and locked in place.
4. High Engine Circuit Breaker
A rocker-type push button reset 30 Amp circuit breaker
returns interrupted power to the high engine function
when depressed.
5. Hourmeter
An HOURMETER records the engine operating time.
6. Voltmeter
With the ignition switch in the ON position, and before
starting the engine, the VOLTMETER indicates the con-
dition of the battery. With the engine running, the VOLT-
METER indicates output voltage of the alternator.
Normal reading for the voltmeter will be 12-14 volts with
a properly charged or charging battery.
7. Oil Pressure Gauge
An OIL PRESSURE gauge provides an indication of the
engine lubrication system pressure.
8. Water Temperature Gauge
A WATER TEMPERATURE gauge provides an indication
of the coolant temperature within the engine.
9. Tower Proximity Switch Check Light
Indicates that the ground control tower lift, main lift or
telescope function switch is being selected with the
tower or main boom outside of the allowable operating
range. Refer to Daily Functional Check, Tower Boom
Sequence in Section 2.