MAHLE ACX1281, Operation Manual

Page: 14 / 36

© MAHLE
14 | ACX1281 | Product description en
3.5 Functional description
The refrigerant recovered from the air conditioning system passes
through the combo filter to remove suspended particles and
moisture.
The purpose of the vacuum pump is to generate a vacuum in
the air conditioning system which removes excess moisture and
to detect possible leaks in the vehicle air conditioning system.
Used oil separated from the vehicle refrigerant recovered drains
into the used oil bottle.
The vehicle air conditioning system is partly filled with
UV dye to facilitate the detection of leaks in the event of damage
to the vehicle air conditioning system.
The refrigerant in the internal refrigerant bottle is used for filling
the vehicle air conditioning system.
The purging unit for the non-condensable gases, consisting of
a temperature sensor, pressure sensor, coil and orifice, always
takes effect when the internal refrigerant bottle pressure is higher
than the saturation pressure.
Refrigerant identification is a menu-driven process implemented
by a refrigerant identification unit which is integrated into the
ACX1281.