JLG 400CRT ANSI Operator Manual - Manual (Page 22)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3-2 – JLG Lift – 3121110
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 Figure 3-1., Ground Control Station for these
symbols and their corresponding 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 select switches must be positioned to off to
prevent draining the batteries.
1. Power Select Switch
A three position, key-operated power select switch
supplies operating power to the platform or ground
controls, as selected. When positioned to platform,
the switch provides power to the emergency stop
switch at the platform controls. When positioned to
ground, the switch provides power to the ground
control. the ground control emergency stop switch
provides power to the key switch. With the power
select 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.
When the platform is elevated, drive function oper-
ates 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 selec-
tor switch positioned to ground, furnishes operating
power to the ground control station. 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.
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 7 psi (0.5 bar).
Charge Pressure - Illuminates when the charge pressure
drops below 70 psi (4.8 bar), indicating the charge filter is
clogged and needs to be replaced. The indicator is also
connected to a temperature sensor to prevent false sig-
nals from being generated when the hydraulic oil is below
normal operating temperature.