Refrigerant Circuit Components, Arrangement And Influence On High And Low Pressure Sides

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Refrigerant Circuit Components, Arrangement And Influence On High And Low Pressure Sides

High pressure side: Condenser, receiver and restrictor or expansion valve to separate the high and low pressure liquid ends

High pressure results from the restrictor or expansion valve forming a constriction and causing the refrigerant to accumulate, thus leading to an increase in pressure and temperature.

Excess pressure occurs if too much refrigerant or refrigerant oil is used, the condenser is contaminated, the coolant fan is malfunctioning, the system is blocked or in the event of moisture in the refrigerant circuit (icing-up of restrictor or expansion valve).

Low pressure side: Evaporator, evaporator temperature sensor and compressor to separate high and low pressure gas ends

A drop in system pressure can be caused by loss of refrigerant, the restrictor or expansion valve (blockage), a malfunctioning compressor or an iced-up evaporator.