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Defrost Systems in Household Refrigerators. The process of removing the ice or frost from the evaporator or freezer is called as defrosting. The automatic controls employed in the present day refrigerators to prevent the formation of frost on the evaporators are called as the defrost systems. slide 2 of 5.
A manual defrost refrigerator, like a manual defrost freezer, circulates the refrigerant in the walls of the unit. It also has internal temperature gradients. The most common maintenance issue with a manual defrost refrigerator is condensate water pooling at the bottom of the cabinet. manual defrost refrigerator, like a manual defrost freezer, circulates the refrigerant in the walls of the unit. It also has internal temperature gradients. The most common maintenance issue with a manual defrost refrigerator is condensate water pooling at the bottom of the cabinet.