TIGIEFFE AIRO A Series, Use And Maintenance Manual

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Use and Maintenance Manual – A16 J A18 J Series Page 79
7.2.12. Operation check and adjustment of platform overload controller
The AIRO self-propelled articulated boom aerial platforms are
equipped with a sophisticated overload controller.
Normally the overload controller does not require any adjustments,
since it is calibrated in the factory before the machine is delivered.
This device checks the load on the platform and:
▪
disables all movements if platform is overloaded by 20%
compared to the nominal load (drive and steering disabled
with platform lifted);
▪
with platform in transport position and overloaded by 20%
compared to the nominal load, it disables telescopic boom
lifting and extension;
▪
it warns the user of the overload condition by means of the
platform audible alarm and warning light;
▪ By removing the overload, the machine can be operated
again.
Check operation at least once a year
The overload controller consists of:
▪
Deformation transducer ( A ) (load cell).
▪
electronic board ( B ) for the system calibration located inside a
tight case ( C ) in platform;
Operation check of the overload controller:
▪
When platform is completely lowered and with extension deck
retracted, load a charge evenly distributed equal to the max.
nominal l oad allowed by the platform (paragraph “Te chnical
features”). In this condition a ll operations should be possible
both from platform and ground control panel.
▪ When platform is completely lowered add to the rated load an
overload of 25% of the nominal load. In this condition the red
alarm light and the audible alarm turn on.
Fig.30a
▪
If the platform is at a height from the ground higher than that
indicated in chapter “Technical features”, the alarm condition
locks the machine completely (the jib activates its
microswitch after exceeding a height of 10° according to the
horizontal axis) the alarm condition blocks the machine
completely. To operate the machine again, remove the
overload.
Fig.30b
4 3 2 1