Chapter 6 – Controls
A46JRT – 0260996 21
Engine/Emergency Power Switch
The engine/emergency power switch (refer to Figure 6.2)
is used to operate turntable, boom, and platform functions
using the emergency power system. The switch is spring
returned to the engine position for aerial platform engine
operation.
Caution
The emergency power system is for emergency
lowering and stowing only. The length of time the
pump can be operated depends on the capacity of the
battery. Do not use this system for normal operation.
• Hold the engine/emergency power switch downward
in the direction of the white arrow to activate the
emergency power system.
•
Release the switch to
disengage the emergency power
system.
If the engine is running, it will stop when the switch is
placed in the emergency power position.
The emergency power system may be used at the lower
controls to lower the platform during a platform overload
situation.
Fuel Switch
Engines on machines with the dual fuel option can be
operated using gasoline or liquefied petroleum gas (LPG).
Dual fuel machines have a gasoline tank inside the left
side of the chassis and an LPG tank mounted on the
outside of the chassis on the left side.
The fuel switch (refer to Figure 6.2) may be used to select
between gasoline and LPG operation.
Place the switch in the proper position depending on the
type of fuel that is required.
Platform Overload Warning Light
When the platform overload limit is exceeded, the horn will
sound intermittently and the platform overload light (refer
to Figure 6.2) will blink until the excess load is removed
from the platform.
Tilt Alarm
If the aerial platform chassis is out of level more than the
machine specified slope sensor alarm setting when the
main boom is raised or extended, an alarm will sound
and the tilt warning light on the lower control panel (refer
to Figure 6.2) will illuminate.
Diagnostic Center Display
The diagnostic center LCD display (refer to Figure 6.2) is
located on the left side of the lower control panel.
When the battery disconnect is in the on position and the
emergency stop button is enabled at the lower controls,
the LCD display shows:
• The accumulated aerial platform operating time.
•
“Mode Neutral” is displayed when no functions are
being operated. When the machine is operated, the
display will indicate the name of that function.
This display is also used by service technicians to trou-
bleshoot and diagnose errors that may occur with the
machine operating system.
Hydraulic Oil Warm-Up Switch
The optional hydraulic fluid warm-up switch is used to
warm the hydraulic fluid when the ambient temperature
is below 32°F (0°C) and boom movement is sluggish
because of cold fluid.
Caution
Not all hydraulic fluid is suitable to use in the hydrau-
lic system. Some have poor lubricating character-
istics and may increase component wear. Only use
hydraulic fluid as recommended.
Use cold weather hydraulic oil as recommended in the
machine General Specifications in temperatures of 10°F
(0°C) or below.
The toggle switches for the warm-up system are on the
lower control panel and on the front of the upper control
panel.
Note
Machine functions are not operational while using the
hydraulic warm-up system.
To warm-up the hydraulic fluid from the lower controls:
1. Start the engine from the lower controls.
2. Place the hydraulic fluid warm-up switch in the on
position.
• The engine throttle speed will increase to warm the
hydraulic fluid.
• The engine throttle speed will decrease and return
to idle once the hydraulic fluid reaches a preset
temperature.
• If the warm-up switch is left on the engine speed
will continue to increase and decrease to keep the
hydraulic fluid at a preset temperature.
3.
When the engine throttle speed returns to idle, place
the hydraulic fluid warm-up switch in the off position.
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