Repair Service Manual

OPERATION:
The compressor increase the gas pressure from low (about 2 bars), to high pressure (about 7-15
bars), thereby the temperature of the gas increases. When the gas passes into the condenser, as it is
warmer than outdoor air, it lost heat (J) and becomes liquid. The liquid passes into the bottle desiccant
that the filter, removes moisture serves as a buffer reservoir.
The high pressure liquid passes through the thermal expansion valve, its pressure and temperature
fall quickly to reach about 2 bars and 0 ° C. In passing through the evaporator, the fluid picks up heat
to the air entering the passenger compartment and vaporizes. The air entering the cabin is well cooled
and dried by condensation of moisture it contained. The gas then goes back to the compressor inlet.
For the compressor to engage requires that the driver presses the air-conditioning, the interior fan
motor is at least on the first speed, the pressure switch gives a high pressure value between 2 and 29
bars and that the probe evaporator gives a temperature greater than 3 ° C.
When the pressure switch detects a high pressure of at least 15 bar, it switch on the condenser
cooling fan motor and stop it when the pressure drops to 12 bars.
OPERATION CHECK-UP:
Control that the compressor clutch sticks when air conditioning is turned on otherwise check the
resistance of the coil and the power supply. If the pressure in the circuit is less than 2 bars, this means
that lack of the gas in the installation thus the pressure switch cuts off power.
DIRECTIONS:
Try parking in the shade to reduce the need for air conditioning to help cool the interior.
Open the windows, before engaging the air conditioning system, to remove the maximum amount of
heat and then close them as soon as you switch the air conditioning on.
In order to prevent sore throats do not aim the vents directly at the face.
To ensure correct performance of the system is maintained, reduce refrigerant leaks and ensure the
air conditioning system is well maintained, run the air conditioning system for at least 15 minutes each
week regardless of external temperatures.