Page 12 December 2007
Rough Terrain Electric Scissors
Control Functions Section 2 - Familiarization
It is the responsibility of the operator to read, completely understand and follow all instructions and warnings
contained in this operating manual and on the aerial platform.
FAMILIARIZATION
2.2 Component Identification
The following descriptions are for identification,
explanation and locating purposes only.
2.2-1 Motion Alarm
The alarm produces an audible sound when any control
function is selected. On aerial platforms with certain
options, a flashing amber light will accompany this
alarm.
2.2-2 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.
NOTE
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.
2.2-3 Brake System
The brake system is located on the main manifold in
the motor/hydraulic compartment. The brakes must
be manually disengaged before pushing, winching or
towing. Refer to Section 2.5-2 for procedure on how to
release the brakes manually. The system contains the
following controls:
2
1
Figure 2-1. Brake System
1. Brake hand pump
2. Brake auto reset valve plunge
2.2-4 Load Sensing System
This system is a safety device that prevents any normal
movement of the aerial platform from a stationary
working condition after the rated load is reached and
exceeded. Refer to Table 4.4 for maximum platform
capacities.
• When 90% of the rated load is reached:
The red power indicator light on 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 2.6.
NOTE
After reaching full extension and upon
lowering, the aerial platform could stop
and take an overload reading. Return the
proportional 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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