Chery QQ Service Manual
5. High-low pressure protection switch
The high-low pressure protection switch is used for control. When there is abnormal
pressure variation occurring in circular refrigerant, the switch will cut off the circuit
of the electric magnetic clutch and the condensator’s fan to stop the compressor.
6. Expansion valve
The expansion valve ejects the liquid refrigerant from a slim hole that pass through
stock solution drier to expand it suddenly and produces low temperature and low
pressure pulverization refrigerant.
7. Evaporator
The cooled pulverization refrigerant makes the temperature inside car lower through
evaporator. Meanwhile the refrigerant turns to the thermal gaseous refrigerant and is
supplied into the compressor. As far as function is concerned, evaporator is directly
contrary to that of condensator (when refrigerant enters evaporator it is liquid. While
it is in gaseity when exit.)
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