TIGIEFFE AIRO A Series, Use And Maintenance Manual

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Use and Maintenance Manual – A16 J A18 J Series Page 8
Do not use the machine for purposes other than those for which it was designed, except after making a
request and having obtained written permission in this sense from the manufacturer
1.3.1. Leaving at height
The
mobile elevating work platforms are not designed by taking into account the risks of the “leaving at height” because the only
access position considered is when the platform is completely lowered. For this reason, this activity is formally forbidden.
However, there are exceptional conditions in which the operator needs to access or leave the work platform not in the access
p osition. This activity is normally defined as “leaving at height”.
The risks connected to the “leaving at height” do not depend ex clusively on the PLE (work elevating platform) characteristics; a
specific risk analysis carried out by the employer can authorize this specific use by taking into account:
▪
The working environment characteristics;
▪
The absolute prohibition to consider the work platform as a fixing point for people working outdoors;
▪
The use of the machine at xx% of its performances to avoid that additional forces created by a specific operation or
bending of the structure move away the access zone from the unloading zone. Provide for some tests in order to
define these limitations;
▪
Provide for a specific evacuation procedure in case of emergency (for example: an operator always on the work
platform, one at the ground control panel while a third operator leaves the lifted platform);
▪
Provide for a specific training of the staff both as operator and transported staff;
▪ Equip the unloading zone with all the devices that are necessary to avoid the risk of fall of the staff that
accesses/leaves the platform.
What said above is not a f
ormal authorization of the manufacturer for the “leaving at height”, but it wants to supply information to
the employer - who is fully responsible for that - which can be useful for the planning of this exceptional activity.
1.4. Description of the machine
The machine described in this use and maintenance manual is a mobile elevating work platform equipped with:
▪
motorized chassis equipped with wheels;
▪ hydraulically driven rotating turret;
▪ Articulated boom operated by hydraulic cylinders (the number of articulations and cylinders varies according to
machine model).
▪ operator platform (the max. capacity varies according to the model - see chapter "Technical features”).
The chassis is motorized to allow the machine to move even when the platform is lifted (see “Use instructions”). The machines
can be delivered with the following drive and steering features:
▪ two driving wheels and two steering idle wheels;
▪ Four driving wheels, of which two steering and two fixed.
Furthermore, to all the above combinations, it is possible to associate, optionally, a self-locking oscillating axle.
All wheels are equipped with hydraulic parking brakes, positive logic type (when drive controls are released brakes are
automatically activated).
The turret rests on a turntable fixed to the chassis and can be oriented (rotated) by 360° non-continuous around the central
axle of the machine by means of irreversible endless screw.
The lifting system , with articulated boom, can be divided into three main structures:
▪
The first, with vertical exte nsion, consists of a “double parallelogram” system named “pantograph”.
▪
The second, consists of a lifting boom with telescopic extension.
▪
The third, consists of the terminal boom named “Jib”.
Such lifting structures are driven by 4 double-acting hydraulic cylinders:
▪ One cylinder for the “pantograph” extension.
▪ One cylinder for the boom extension.
▪ One cylinder for the extension/retraction of the telescopic boom.
▪ One cylinder for the “jib” extension.