SAFARI

AIR CONDITIONING

CHAPILLARY TUBE

EQUALIZER

CIRCUIT IN

CASE INTERNAL

AQUALIZER

TYPE

VALVE

EQUALIZER

PIPE

HEAT

SENSITIZING

TUBE

INLET

DIAPHRAGM

CHAMBER

DIAPHRAGM

OUTLET

PRESSURE

SPRING

Receiver / dryer

This component acts as a storage device for liquid

refrigerant. It also contains a filter and a desiccant

which is a material that absorbs moisture from the

A.C. system.

Expansion Valve

This small valve controls the flow of refrigerant into

the evaporator. It is controlled by a temperature

sensor at the evaporator outlet. If the outlet

temperature is too high, it means not enough

refrigerant is flowing into the evaporator and poor

passenger cooling will result.

If the outlet temperature is too cool, it means too

much refrigerant is flowing and the evaporator fins

will probably load up with ice. In either case, the

feed-back temperature sensor opens or closes the

expansion valve opening to achieve the correct flow

rate and evaporator outlet temperature.

Evaporator

The last component in the cycle, and where we

finally get around to cooling air. As the foggy mist of

refrigerant enters, the air passing over the evaporator

fins gives up its heat to evaporating refrigerant. At

the inlet the refrigerant is liquid and at the outlet it has

changed into gas.

Fig. 11 - Expansion valve

Fig. 10 - Receiver / dryer

Fig. 12 - Evaporator