Snorkel AB85RJ - Manual (Page 19)

Chapter 4 – Safety Devices
AB85RJ – 0421533 15
The overload sensing system is not active when the
machine is being driven with the booms in the stowed
position. This allows the machine to be driven without
the system sensing an overload due to rough ground
conditions.
To eliminate repeated tripping of the system during ma-
chine operation, there is a five second delay in machine
functions following:
• starting the engine.
• placing the drive/boom selector switch in the boom
position when the main boom is below horizontal and
fully retracted.
• removing excess load from the platform.
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 ex-
ceeds a preset level or if the oil pressure is too low for safe
operation. An engine temperature gauge is on the gauge
panel above the lower controls (refer to Figure 4.8).
Figure 4.8 – Gauge Panel
High Engine Temperature Alarm
If the coolant in a Cummins or GM engine exceeds the
engine operating temperature an alarm will sound and
the engine will shut off.
If the oil in a Deutz engine exceeds 110°C (230°F) an
alarm will sound and the engine will shut off. Any time
there is no alternator current being produced, an alarm
will sound and the engine will shut off. This prevents high
engine temperature if the fan belt breaks.
Do not restart the engine until the condition that caused
the overheating has been corrected.
Figure 4.6 – Upper Controls
If the platform becomes significantly overloaded, or if an
upward force on the platform exceeds approximately
445 N (100 lb), the system will enter into error mode,
stopping all functions from the upper and lower controls.
The horn will then sound constantly and the overload light
will stay illuminated at the upper and lower controls (refer
to Figure 4.6 and 4.7)
Figure 4.7 – Lower Control Panel
The system will remain in error mode until the excess
load is removed from the platform and the emergency
stop button or start switch is cycled off and back on,
resetting the system. At that time, the machine functions
are operational.
A
Danger
The aerial platform can tip over if it becomes unstable.
Death or serious injury will result from a tip-over ac-
cident. Do not exceed the capacity values indicated
on the platform rating placard.
Platform
Overload Light
Platform
Overload Light
Engine Temperature Gauge