Refrigeration – With indicator or tester – Operatively correlated with automatic control
Patent
1992-06-05
1993-05-11
Tanner, Harry B.
Refrigeration
With indicator or tester
Operatively correlated with automatic control
62127, 62209, 622283, F25B 4100
Patent
active
052090760
ABSTRACT:
A microprocessor based device which monitors the operation of a compressor in a refrigeration system and automatically shuts the compressor down if a monitored condition is abnormal. Sensors in the refrigeration system sense conditions such as refrigerant pressure and temperature, superheat, oil pressure and motor current draw. If a sensed condition is outside of a safety range and remains there for a time out period, an alarm condition is indicated and the device generates a alarm signal and shuts down the compressor. A detachable display module includes a keypad for carrying out field programming and a LCD screen for displaying the refrigerant conditions and programming prompts and commands. A rest button permits resetting twice before a service call is required.
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Hobbs Michael L.
Kauffman Gary O.
Izon, Inc.
Tanner Harry B.
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