Control system for preventing compressor damage in a refrigeration system
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United States of America Patent
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-
May 11, 1993
Grant Date -
N/A
app pub date -
Jun 5, 1992
filing date -
Jun 5, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
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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Family
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Cited Art Landscape
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