Description of the system

DESCRIPTION OF THE SYSTEM

The air conditioning system comprises the following components:

• a variable displacement compressor fastened to the engine by brackets;
• a condenser which is a heat exchanger fitted in front of the engine coolant fluid radiator;
• a drier filter located to the left side of the condenser;
• an evaporator which is the second heat exchanger of the system to be found in the duct-distributor unit;
• an expansion valve fitted on the evaporator inlet duct;
• various pipes and hoses which connect the different components of the system;
• four-level pressure switch installed on the drier filter.

Two tubes are welded on the high and low pressure pipes on which a needle valve is fitted which serves for discharging and charging the system.

1. Compressor
2. Condenser
3. Drier filter
4. Four-level pressure switch
5. Expansion valve
6. Evaporator
7. Duct-distributor unit
8. Needle valve for discharging/charging the system (low pressure side)
9. Needle valve for discharging/recharging the system (high pressure side)

The system with thermostatic adjustment SEMI-AUTOMATICALLY CONTROLS the climate control system of the car.

In fact, according to the temperature required in the passenger compartment, it manages the following automatically:

• air temperature at the vents;
• fan speed (with constant changing).

Upon manual operation it handles the following:

• fixed fan speed (4 speeds);
• compressor engagement (air cooling circuit);
• engagement of air recirculation;
• "MAX DEF" function.

Lastly the distribution of the flows of air to the different vents are adjusted completely manually (through bowden cable).