SKYJACK, Page 16 SJIII Compacts & Conventionals
February 2008
Section 2 - Operation Component Identification
2.5 Component Identification
The following descriptions are for identification,
explanation and locating purposes only.
2.5-1 Main Power Disconnect Switch
This switch is located at the rear of the base.
1
Figure 2-1. Main Power Disconnect Switch
1. Main Power Disconnect Switch - This switch,
when in off position, disconnects power to all
circuits. Switch must be in on position to operate
any circuit. Turn switch off when transporting aerial
platform.
2.5-2 Tilt Alarm
The aerial platform is equipped with a device which
senses when the aerial platform is out of level in any
direction. When activated, it disables drive and lift
functions of the aerial platform and an alarm produces
an audible sound accompanied by the amber light. If
the alarm sounds, lower the platform completely, then
reposition aerial platform so that it is level before raising
the platform.
If the tilt alarm sounds and the platform does
not, or only partially raises, immediately
lower the platform completely and ensure
that the aerial platform is on a firm level
surface.
2.5-3 Load Sensing System
This system is a safety device that will prevent any
normal movement of the aerial platform from a stationary
working position after the rated load is reached and
exceeded. Refer to Table 2.5 for maximum platform
capacities.
When 90% of the rated load is reached:•
The red power indicator light of the platform
control console flashes.
When the rated load is reached:•
An audible alarm sounds for approximately
2 seconds, 5 times per minute.
When the rated load is exceeded:•
The flashing light and audible alarm continue and
all electrically controlled aerial platform movement
functions stop. To resume normal operation,
remove the overload from the platform.
If the aerial platform during the operation comes •
in contact with an overhead obstruction:
The platform could become overloaded and all
functions would stop. Release of the platform
from this situation can only be effected by use
of the emergency lowering system. Refer to
Section 2.15.
After reaching full extension and upon
lowering, the aerial platform could stop
and take an overload reading. Return the
controller to the neutral center position,
and release the enable trigger switch. If the
aerial platform is overloaded, the flashing
light and audible alarm continue and
all electrically controlled aerial platform
movement functions stop. To resume
normal operation, remove the overload
from the platform.
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