JLG 600SC_660SJC Operator Manual - Manual (Page 37)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3120897 – JLG Lift – 3-5
3.4 CONTROLS AND INDICATORS
NOTE: This machines is equipped with control panels that
use symbols to indicate control functions. Refer to
Table 3-1 for decal located on the control box guard
in front of the control box or by the ground controls
for these symbols and the corresponding functions.
Ground Controls
PERFORM PRE-OPERATIONAL CHECKS AND INSPEC-
TIONS FROM THE GROUND CONTROL STATION. WHEN
PERSONNEL ARE IN THE PLATFORM, OPERATION OF
THE BOOM WILL ONLY BE PERFORMED WITH THE PER-
MISSION OF THE PLATFORM OCCUPANT(S).
NOTE: When Power/Emergency Stop switch is in the “ON”
position and engine is not running, an alarm will
sound, indicating Ignition is “ON”.
WHEN THE MACHINE IS SHUT DOWN THE MASTER/EMERGENCY
STOP SWITCH MUST BE POSITIONED TO THE “OFF” POSITION
TO PREVENT DRAINING THE BATTERY.
NOTE: On machines with Continental diesel engines, when
Glow Plug Indicator is lighted (Yellow), wait until light
goes out before cranking engine.
1. Power/Emergency Stop Switch.
Pull out ON-OFF POWER/EMERGENCY STOP
SWITCH to turn on engine ignition and power to the
electrical system. Push in to shut off engine and
remove power from the controls. The Ground Con-
trol Emergency Stop Switch must be pulled out to
operate the machine from either Ground Control or
Platform Control. This allows the machine to be shut
down in emergency situations by those untrained in
the operation of the lift but who recognize the Emer-
gency Stop Switch. The keyed Master Switch can
also be used for the same purpose.
2. Engine Start/ Auxiliary Power Switch.
A toggle-type ENGINE START/AUXILIARY POWER
control switch, on the ground control panel, ener-
gizes the electrically operated auxiliary hydraulic
pump, when actuated. To use auxiliary power, the
switch must be held “DOWN” for duration of auxil-
iary pump use.
NOTE: Auxiliary power only works if there is no oil pressure,
and is disabled if engine is running.
a. The auxiliary pump functions to provide suffi-
cient oil flow to operate the basic machine func-
tions should the main pump or engine fail. The
auxiliary pump enables the tower boom lift and
telescope and swing to be operated.
b. It should be noted that the functions will operate
at a slower than normal rate because of the
lower lpm of hydraulic fluid delivered.
NOTE: When operating on auxiliary power, do not operate
more than one function at a time. (Simultaneous
operation can overload the 12-volt auxiliary pump
motor.)
c. Position PLATFORM/GROUND switch to
GROUND.
d. Position POWER/EMERGENCY STOP switch to
ON.
e. Operate appropriate control switch or lever for
desired function and hold.
f. Position ENGINE START/AUXILIARY POWER
switch to DOWN and hold.
g. Release AUXILIARY POWER switch, allowed by
the selected control switch or lever.
h. Position the POWER/EMERGENCY STOP
SWITCH to off.
3. Control Station Selector.
A three position, center off, key activated PLAT-
FORM/GROUND SELECT switch supplies power to
the platform control console when positioned to
PLATFORM. With the switch in GROUND position,
power is shut off to the platform control console, and
only the controls on the ground control panel are
operable.