Defrosting is a procedure, performed periodically on refrigerators and freezers to maintain their operating effiency. Over time water vapour in the air condenses on the cooling elements within the cabinet. It has been suggested that this article or section be merged into refrigeration. ... A freezer is a home appliance, usually found above the refrigerator that keeps foods frozen. ... Boundaries: Phase, Pressure, Temperature Evaporation/Sublimation Whenever a water molecule leaves a surface, it is said to have evaporated. ...
The resulting ice inhibits heat transfer out of the cabinet increasing running costs. Furthermore as the ice builds up it takes increasing space from within the cabinet - reducing the space available for food storage. ICE can refer to: InterCity Express, a German high-speed train Internal combustion engine, a fuel engine In-circuit emulator, a computer hardware device In case of emergency, emergency number in mobile phones Institution of Civil Engineers, British civil engineer guild Immigration and Customs Enforcement, U.S. government agency Iron...
Defrosting the unit is achieved by:-
Temporarily removing all food from the cabinet.
Turning off power to the unit.
Leaving the doors to the unit open
Waiting for the ice to melt and draining it appropriately. Using a towel is advisable when completing this step.
The process may be speeded up by mechanical removal of ice, or the introduction of gentle heat into the cabinet.
It is generally recommended that defrosting should be done annually.
Many newer units are described as frost free and do not require manual defrosting in normal use. A frost free refrigerator or freezer incorporates technology to keep the unit from icing up. ...
The defrost clock thus remains in the refrigeration mode until the demand defrost sensor switch, or an optional demand switch, initiates a defrost cycle of the refrigeration equipment.
According to the invention, the defrost clock includes auxiliary switching means in circuit with the timer motor in the defrost control clock and arranged so that prior to a normal time responsive defrost initiation, the switch means causes the operation of the timer motor to cease.
The defrost control clock circuit remains in the refrigeration mode and the refrigeration system operates normally until the demand defrost switch or any optional second switch is actuated to cause the clock motor to run for a predetermined period of time to initiate a defrost.
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