Refrigeration – Automatic control – Refrigeration producer
Patent
1992-06-26
1993-06-15
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62158, 62229, G05D 2332
Patent
active
052188370
ABSTRACT:
A control system for controlling the operation of an air conditioning compressor and method of making the same are provided, the system comprising a thermostat switch and a high pressure switch arranged in series with a compressor switch across two sides of a power source whereby the thermostat switch and the high pressure switch must be in a closed condition thereof with the compressor switch also being in a closed condition before the compressor can be turned on, the system also comprising a low pressure switch that is arranged so as not to be in series with the other switches across the two sides of the power source and a microprocessor having means operatively associated with the low pressure switch to monitor the condition thereof.
REFERENCES:
patent: 3289429 (1966-12-01), Beard
patent: 3636369 (1972-01-01), Harter
patent: 3792592 (1974-02-01), Cook
patent: 4602484 (1986-07-01), Bendikson
Robertshaw Controls Company
Tanner Harry B.
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