In automatic-defrost freezers and refrigerators (and in larger-capacity units) that require a more rapid cooling of the condenser, additional air movement through the condenser is…

In frost-free refrigerators and freezers, a fan is installed over the evaporator to move air through the evaporator and circulate it in the freezer and…

It is an electric resistant heating element clipped to the evaporator in frost-free refrigerators and freezers. The purpose of the defrost heater is to melt…

A length of thin tubing connected to the high-pressure side (liquid line) from its inlet side and to the low-pressure side of the system (the…

When liquid refrigerant reaches the evaporator, it vaporizes (or boils) and absorbs heat from the freezer. Sometimes the evaporator is referred to as a cooling…

The compressor draws in low-pressure, cool refrigerant vapor from the evaporator. This cool vapor is compressed (squeezed) and changed to hot vapor within the compressor,…

Also known as a termination switch or defrost thermostat. (Not to be confused with the cold-control thermostat discussed earlier.) In frost-free refrigerators and freezers, every…

These are the pipes through which refrigerant is circulated throughout the system. The tubing used in household units is made of copper. Aluminum and steel…

A cylinder made of copper or brass (of varying sizes depending on the capacity of the unit) filled with alumina or silica gel. Its function…

Compressor. The compressor is the heart of the refrigeration unit. It is a motor-operated device that circulates refrigerant much as a pump would in a…