I ELEMENT DEFROST HEATER QC-50ALTO SHAAM EL-34268
The defrost mechanism in a refrigerator heats the cooling element (evaporator coil) for a short period of time and melts the frost that has formed on it. The resulting water drains through a duct at the back of the unit. Defrosting is controlled by an electric or electronic timer: For every 6, 8, 10, 12 or 24 hours of compressor operation it turns on a defrost heater for 15 minutes to half an hour.
A defrost thermostat opens the heater circuit when the evaporator temperature rises above a preset temperature, 40°F (5°C) or more, thereby preventing excessive heating of the freezer compartment. The defrost timer is such that either the compressor or the defrost heater is on, but not both at the same time.
A heating element converts electrical energy into heat through the process of Joule heating. Electric current through the element encounters resistance, resulting in heating of the element. This process is independent of the direction of current.
Founded in 1955, Alto-Shaam is the inventor of the original Cook and Hold oven that revolutionized low-heat cooking and the commercial cooking industry. Today, Alto-Shaam features a full line of Cook and Hold ovens, convection ovens, combi ovens, chillers, warming cabinets and drawers, heated buffet and display cabinets, merchandisers, fryers, and rotisseries.