Multitel Pagliero 160 ALU, Руководство по эксплуатации

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15
LIMITING DEVICE
With very few exceptions, the boom is fitted with an automatic device which limits its range of action,
so as to ensure stability in any operating condition. This device functions automatically, as follows :
- the telescopic boom is made up of several sections and can only be extended to a given
length. When it reaches this point the downward movements of the main jack and the movements
for exending the telescopic boom are disabled. Only rotational, upward and retraction movements
are possible.
A red lamp on the cage control panel indicates that the locking condition has been reached.
Once the lamp has turned on, do not add any more loads to the cage and proceed carefully since
the performance limits of the platforms have been reached.
The maximum outreach varies depending on the load in the cage, that is to say it corresponds
to the measurements shown in the table for the rated load on the cage, and increases
proportionally for the lighter loads.
The best performance levels can be reached by making smooth movements.
Vice versa, if the movements are jerky, the pressure peaks will trigger the locking device sooner.
CHECK PROPER OPERATION OF THE LIMITING DEVICE ON A MONTHLY BASIS
The check should be carried out as follows:
- place the rated load in the cage;
- give the boom an inclination of 20 ° then extend the telescope;
- the platform should stop when the outreach indicated in test book ("Technical Features of the
access platform", "AIF or APAVE Approval Certificate", "Prüfbuch für Hebebühnen", "ABOMA
Approval Certificate", etc.) is reached;
- activate the central jack lowering control: the boom may not move any lower;
- perform these operations on free ground;
- afterward, with the operator on the cage, check if the red indicator lamp on the cage controls
lights on when the boom reaches the stop (Limiting device indicator lamp - see photograph
page 22);
- define beforehand the point where the boom should stop, and if there is any doubt, rather than
continuing with the operations bring the machine to the stowed position and call in a specialised
technician.
NEVER OPERATE THE MACHINE, UNDER ANY CIRCUMSTANCES, IF THERE IS ANY
DOUBT AS TO OPERATION OF THE LIMITING DEVICE.
This kind of machine is provided of double circuit limiting working on two channels. In case of a
default in the operation of one of the two channels the movements stop. Push the emergency button
to re-enable the controls. If the problem recurs, put the boom in the stowed position and asks a
specialised technician for an accurate check.
NEVER OPERATE IF THE LIMITING CIRCUIT IS NOT PERFECTLY EFFICIENT.
The limiting device of the 160-180-220 ALU has the special feature that the descending movement is
only possible when the boom has an inclination of less than 20°, even when the range limiting device
is working.
This means that greater outreaches can be achieved when the boom works in a position closer tothe
horizontal position.