Defrost timer having selectable defrost time

Details Defrost timer having selectable defrost time Defrost timer having selectable defrost time

G - Physics

04

F

58/4

G04F 3/00 (2006.01) F25D 21/00 (2006.01) H01H 43/10 (2006.01)

Patent

CA 1080487

ABSTRACT A selectable cycle defrost timer having two timing cams and two timing switches that are switched from first to second switch positions by the respective cams. The two cams rotate different numbers of times in a given time period, but the two switches are simultaneously in their second switch positions just once each given time period. Inter- connection means between the two switches permits the timer to be connected into a defrost control system in such a manner that a selectable switch permits a normal defrost operation of several defrost cycles per day, or alternatively, just one energy saving defrost cycle per day.

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