JLG 26MRT ANSI Operator Manual - Manual (Page 24)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3-2 – JLG Sizzor – 3120790
Capacities
Raising platform above horizontal with or without any load
in platform, is based on the following criteria:
1. Machine is positioned on a smooth, firm and level
surface.
2. Load is within manufacturer’s rated capacity.
3. All machine systems are functioning properly.
Stability
This machine, as originally manufactured by JLG and
operated within its rated capacity on a smooth, firm and
level supporting surface, provides a stable aerial platform
for all platform positions.
3.4 CONTROLS AND INDICATORS
The machine is equipped with control panels that use
symbols instead of words to indicate control functions.
Refer to Table 3-1 for these symbols and their correspond-
ing functions.
Ground Control Station
DO NOT OPERATE FROM GROUND CONTROL STATION WITH
PERSONNEL IN THE PLATFORM EXCEPT IN AN EMERGENCY.
PERFORM AS MANY PRE-OPERATIONAL CHECKS AND INSPEC-
TIONS FROM THE GROUND CONTROL STATION AS POSSIBLE.
NOTE: When the machine is shut down for overnight park-
ing or battery charging, the EMERGENCY STOP
and POWER SELECTOR switches must be posi-
tioned to OFF to prevent draining the batteries.
1. Power Selector Switch
A three position, key-operated power selector switch sup-
plies operating power to the platform or ground controls,
as selected. When positioned to platform, the switch pro-
vides power to the emergency stop switch at the platform
controls. When positioned to GROUND, the switch pro-
vides power to the emergency stop switch at the ground
controls. With the power selector switch in the center off
position, power is shut off to both platform and ground
controls and the key can be removed to disable the
machine.
NOTE: With the Power Selector switch in the off position,
the key can be removed in order to incapacitate the
machine on the jobsite to avoid unauthorized use of
the machine.
With the POWER SELECTOR switch positioned to
GROUND, ground functions will operate at low
speed at all times.
Low speed is the default speed for all functions.
When the platform is elevated, all functions operate
in creep speed only.
2. Ignition/Emergency Stop Switch - A two-position,
red, mushroom-shaped IGNITION/EMERGENCY
STOP switch, when positioned to ON with the
POWER SELECTOR switch positioned to GROUND,
furnishes operating power to the ground control sta-
tion. In addition, the switch can be used to turn off
power to the function controls in the event of an
emergency. Power is turned on by pulling the switch
out (ON), and is turned off by pushing the switch in
(OFF).
3. Lift Switch - A three position, momentary contact Lift
control switch provides raising and lowering of the
platform when positioned to up or down.
4. Start Switch - A momentary contact, push button
type switch that supplies electrical power to the
starter solenoid when the emergency stop switch is
in the ON position and the start button is depressed.
FOR MACHINES EQUIPPED WITH THE YANMAR DIESEL ENGINE,
THE TIMER RELAY MUST SEAT THE FUEL SOLENOID WITH ITS
INITIAL PULSE, OR THE ENGINE WILL NOT START. PROLONGED
NO-START IS AN INDICATION THAT THE FUEL SOLENOID HAS
NOT SEATED OR THAT THERE IS NO FUEL. IF THE ENGINE
FAILS TO START, THE START SWITCH MUST BE RE-CYCLED TO
PULSE THE FUEL SOLENOID INTO THE SEATED POSITION.
5. Engine/Filter Distress Lights - These warning lights,
when illuminated, warn the operator of an engine or
hydraulic system fault condition. The specific fault
condition for each indicator (left to right) is as fol-
lows:
Alternator - Illuminates when the alternator output drops
below a pre-set level.
Oil Pressure - Illuminates when the engine oil pressure
drops below 8 psi (0.6 bar).
Engine Temperature - Illuminates when the engine tem-
perature exceeds a preset temperature limit.
Return Filter - Illuminates when the return pressure drops
below 29 psi (2.0 bar), indicating the return hydraulic filter
is clogged and needs to be replaced.