Oct-18-700
Operation
Page 26 of 34
Danger
During operation of this aerial device, all platform occupant(s) of this aerial device must
always wear a certified CSA or OSHA approved full body harness attached to a lanyard
while operating the unit from the platform. The lanyard must be secured to the lanyard
anchor (D-ring) at the boom tip.
Platform leveling system
The platform leveling system is a master/slave arrangement between two small hydraulic
cylinders of equal diameter and stroke. The master driving cylinder is connected between
the turntable and the lower boom, so that any movement of the lower boom causes a
proportionate movement in the cylinder. With movement, the cylinder piston becomes, in
effect, a pump forcing oil into the slave cylinder which is attached between the upper boom
and platform shaft. The two cylinders are hydraulically connected, rod side to rod side.
Therefore, both cylinders will travel exactly the same distance. This action keeps the
platform standing surface parallel with the turntable at all times.
In addition to keeping the platform level, the system is capable of stowing the platform
horizontal for road travel. When the platform is unstowed and moved to the work position,
it can be levelled from the upper or lower controls to suit the operator. In the event that
the platform position needs to be changed slightly, the operator can do this from either
control position.
Danger
Never operate the platform tilt from the lower controls when the platform is
occupied.
The platform leveling at the upper controls can only be accomplished by activating the
platform leveling toggle switch at the same time as the joystick trigger (dead man) button.
It is recommended that the platform leveling not be adjusted by the operator while the
booms are in motion in any direction.
During the operation of this aerial device, if the platform tilt cylinder becomes fully
extended, then the leveling of the platform may lag with respect to the booms
displacement. If this condition happens, then lift the booms by a few degrees and readjust
the platform level by using the platform "TILTED/WORKING" position control. Operate
the platform tilt control in the "TILTED POSITION" very slowly until the platform is leveled
again.
