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To eliminate repeated tripping of the system during ma-
chine operation, there is a five second delay in machine
functions following:
• starting the engine.
• removing excess load from the platform.
Tilt Alarm/Warning Lights
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, or when the riser boom
is raised, an alarm will sound and the tilt warning light on
the lower and upper control panels (refer to Figures 4.1
and 4.5) will illuminate. The tilt alarm is located under the
upper control panel.
Danger
The aerial platform can tip over if it becomes unsta-
ble. Death or serious injury will result from a tip-over
accident. Do not drive or position the aerial platform
for elevated use near any drop-off, hole, slope, soft
or uneven ground, or other tip-over hazard.
Completely lower the booms and then drive to a level
surface when the tilt alarm sounds.
The tilt alarm and warning lights are for added protection
and do not justify operating on anything other than firm,
flat, level surfaces.
Engine Protection Systems
A constant tone alarm will sound to warn against high
engine temperature or low oil pressure.
The engine will shut-down:
• if the operating temperature exceeds a preset level
• or if the oil pressure is too low for safe operation.
High Engine Temperature Alarm
If the coolant exceeds the engine operating temperature
an alarm will sound and the engine will shut off.
Do not restart the engine until the condition that caused
the overheating has been corrected.
Low Oil Pressure Alarm
The low oil pressure alarm sounds when the engine oil
pressure is near the lower limit for safe engine operation.
If the alarm sounds, lower the platform to the ground and
then turn the engine off.
• If the engine oil pressure falls below a safe operating
value the engine will shut off.
• The engine can be restarted with low oil pressure,
but it will only run for a few seconds before it shuts
off again.
A46JRT – 0260996
• Do not restart the engine until the condition that
caused the low oil pressure has been corrected.
Engine Warning Light
On dual fuel machines, there is an engine warning light
on the upper control panel (refer to Figure 4.5). When
the engine light comes on, stop operation of the machine
as soon as possible and have the engine serviced by an
authorized and qualified service technician.
Horn
The horn may be used to warn personnel on the ground.
The horn switch is to the right of the emergency stop
button on the upper control panel (refer to Figure 4.5).
The horn is operational when the machine is set up for
operation from the upper controls.
Platform Overload/
Engine Warning Light
Tilt Warning Light
Snorkel
Guard
Figure 4.5 – Upper Controls
Drive Motion Alarm
A drive motion alarm is provided on the machine. The
alarm sounds, in short beeps, anytime the machine drive
functions are being operated. The alarm is used to warn
personnel in the work area to stand clear.
All Motion Alarm
An optional all motion alarm may be provided on the
machine. The alarm sounds, in short beeps, anytime the
machine functions are being operated. The alarm is used
to warn personnel in the work area to stand clear.
Flashing Lights
An amber flashing light may be located on the top of the
counterweight, on each side of the machine. The flashing
lights warn personnel that the aerial platform is in the area.
The lights flash at approximately one flash per second
when the machine is set up for operation:
• from the lower controls and the ground operation
switch is activated, or
• from the upper controls with the foot switch activated
Chapter 4 – Safety Devices
– Dual Fuel Only –
Horn Switch
15
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