Major Components

Major Components

Major Components:

Compressor

Features
Engine mounted driven by the accessory drive belt.
Fixed displacement type.
High-pressure relief valve, to avoid system over-pressure.
ECM controlled clutch energized via a relay.

Receiver drier
Vertically mounted on the right-hand side of the engine compartment next to the engine coolant radiator.
Fitted with the high-side charge port.

Condenser
Multi-pass fin-over-tube type, mounted in front of the engine cooling pack and directly to the radiator.

Pressure (Bitron) switch
Located in the discharge pipe.

Provides a signal, via the A/CCM, to the ECM, to disengage the compressor clutch should the refrigerant pressure be < 2 bar or > 30 bar.

Provides a hard-wired signal to the ECM, to switch the cooling fans to HIGH speed at 22 bar rising pressure and to LOW speed at 17,5 bar falling pressure.

Provides a hard-wired signal to the ECM, to switch the radiator cooling fans to LOW speed at 12 bar rising pressure and to switch the fans OFF at 8 bar falling pressure.

Expansion Valve







The expansion valve is located inside the heater / air conditioning unit and comprises of a diaphragm, connected by a capillary tube to a temperature sensing bulb, which regulates the valve according to temperature variations at the evaporator outlet pipe. This component is NOT serviceable. Expansion Valve

Air Conditioning (Heater / Cooler) Unit







The air conditioning unit houses the evaporator, heater matrix and their temperature sensors. The unit also incorporates two servo motor operated air distribution flaps which regulate airflow to the front footwells and the quantity of airflow through the cool air bypass (air which by-passes heater matrix) up to the upper air distribution box (ADB).

When the front footwell flap is open, air is ducted to the footwell area via the lower air distribution duct (LADD) and front footwell duct. The LADD is clipped to the bottom of the air conditioning unit case and the front foot ducts clipped onto the outlets of the LADD.

Condensate (water) which forms on the evaporator fins is drained out of the unit case through two drains, located either side of the unit underneath the evaporator. The liquid is routed to the vehicle exterior via flexible tubes which are located behind the firewall heatshield.