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4.1.7
BOOM CONTROLS
As soon as all four outriggers are making contact with the ground, the four sensing switches will
activate allowing the Booms to be elevated. If the Ground Station Key Switch is turned to the 'On'
position, the adjacent green button will allow the Booms to be moved, using the Ground control levers.
At the same time, the controls in the platform would be inoperable. Turning the Ground control Key
Switch to the 'Off' position allows the Platform controls to be used to elevate the Boom using the
platform controls. As soon as the Booms are raised sufficiently to clear the 'booms-down' switch, the
outrigger controls are isolated, preventing any ground personnel from taking control of the outriggers,
when elevated. At the same time, the drive control levers also become isolated.
The machine can now be manoeuvred through its entire working envelope, allowing the operator to
ascend to a working height of 14.7 metres and an outreach of 7.55 metres. The slew control gives an
effective slew angle of 400 degrees (200 each way from rest.) allowing the machine to project further
over the nose of the machine. It is necessary to return back the opposite way to stow the machine
before raising the outriggers.
When the machine is fully stowed, with the booms in-line with the major axis of the machine, the four
outriggers can be raised, reversing the controls used previously. If the machine is being moved a short
distance over a level surface, or for fine positioning of the outriggers themselves, the legs can be left
down and the Drive function used at the same time. This imposes a greater level of responsibility on
the operator to ensure that all areas are clear and particularly that any ground personnel are aware of
the movement of the machine. Ideally the operating area should be coned off whilst this is achieved.
English/USA 12/09
TrackDrive (TD) Series
Operating & Safety Instructions
Courtesy of Crane.Market
23
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