Airo X Series - Platform Overload Controller Operation Check and Adjustment

Use and Maintenance Manual – Series X – XS E RESTYLING
Page 79
WARNING! The dimensions of shims A and B refer to max. allowed inclination as indicated in table
“TECHNICAL FEATURES”. To be used during the inclinometer calibration.
7.3.9 Platform overload controller operation check and adjustment
The AIRO self-propelled aerial platforms, X series, are equipped with a sophisticated platform 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:
▪ It disables all movements if the platform is lifted and overloaded by -30% approx. compared to the nominal load.
▪ With platform in transport position and overloaded by -30% compared to the nominal load, it disables lifting only.
▪ it warns the user of the overload condition by means of the platform audible alarm and warning light.
▪ by removing the exceeding load, the machine can be operated again.
7.3.9.1 Control system of the standard load (pressure switch).
The system for the overload control standard is constituted by a pressure switch which is connected to the lower cylinder lift.
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 load allowed by the platform (paragraph “Technical features”). In this condition all operations should be possible both
from platform and ground control panel.
▪ With platform completely lowered, add to the nominal load an overload of 35% of the nominal load and carry out the lifting
operation. In this condition the platform rises up to the point of maximum effort (a few tens of centimeters) and illuminate the
red alarm indicator and horn. the alarm condition stops the machine completely. To operate the machine again, remove the
overload.
7-9: Load control of standard type
To calibrate the device:
▪ Lower the platform completely.
▪ Place a load at the centre of the platform equal to the nominal load + 30%.
▪ Raise the platform to access the pressure switch.
▪ Immobilise the lifting structure by means of the appropriate safety rods.
▪ Remove the connector (A) using a slotted screwdriver.
▪ Carry out the calibration by acting on the adjustment screw inside (B) using an Allen key of 2 mm (C) by screwing or
unscrewing to obtain the intervention of the pressure switch in the point of maximum effort during the lift control (a few tens of
centimeters from the position of access).
▪ Reconnect the connector and screw.
A
B
C