Define instruction: precept; a direction calling for compliance : order âusually used in plural â instruction in a sentence precept; a direction calling for compliance : order âusually used in plural; an outline or manual of technical procedure : directionsâ¦
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.
Defrost a manual defrost refrigerator when frost becomes 1/4 to 1/2 thick. 1  Remove contents from freezer compartment. 2  Turn temperature control to OFF. 3  Use a plastic scraper to loosen and remove frost from the ceiling and walls of the freezer compartment as the frost begins to thaw.