Snorkel TB66J CE - Manual (Page 47)

Chapter 8 – Operation
TB60/66J – 0084030EE 43
If the platform overload sensing system is tripped while
operating the machine or if the system is in error mode
and can not be reset, the emergency power system
may still be used for emergency machine operation from
either the lower or upper controls.
A Danger
The aerial platform can tip over if it becomes un-
stable. Death or serious injury will result from a
tip-over accident. Do not exceed the capacity values
indicated on the platform rating placard.
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.
Four Wheel Drive
The machine may be equipped with a four wheel drive
system. This system operates full time and requires no
action by the operator.
Four wheel drive machines have a “4x4” decal on each
side of the chassis and all four of the wheel hubs are
drive hubs and look the same.
AC Generator
The optional generator supplies power to the electrical
outlet only when the engine is running and the machine
is stationary. The machine functions will not operate
when the machine/generator selector switch is in the
generator position.
A Caution
Cold hydraulic oil does not flow well and may pro-
duce improper generator output voltage. Improper
outlet voltage can damage some electrical power
tools and equipment. Warm the hydraulic oil before
operating the generator.
Do not operate the generator unless the hydraulic oil
temperature is at least 38°C (00°F). Refer to Cold
Weather Start-Up for a hydraulic oil warm-up proce-
dure.
Figure 8.5 – Upper Controls
If the platform becomes significantly overloaded, or if
an upward force on the platform exceeds approximately
445 N (00 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 Figures 8.5 and 8.6).
Figure 8.6 – 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 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.
Engine
Temperature
Gauge
Platform
Overload Light
Platform
Overload Light