Refrigeration – With indicator or tester – Operatively correlated with automatic control
Patent
1985-04-29
1987-08-25
Tapolcai, William E.
Refrigeration
With indicator or tester
Operatively correlated with automatic control
62149, 62292, F25B 4900
Patent
active
046883886
ABSTRACT:
Apparatus for service and recharge of refrigeration equipment, with particular application to automotive air conditioning equipment. A vacuum pump, and oil and refrigerant charge containers are housed within a portable enclosure and configured for selective connection by electrically operated solenoid valves to refrigeration equipment under service. The refrigerant and oil containers are carried by a scale which provides electrical outputs signals as a function of weight of refrigerant and oil remaining in the containers. A microprocessor-based controller receives the scale signals and control signals from an operator panel for automatically cycling through vacuum, oil charge and refrigerant charge stages in a programmed mode of operation. The microprocessor-based controller includes facility for operator programming of the vacuum time and oil and refrigerant charge quantities, and for self- or operator-implemented diagnostics. Operating conditions and stages are displayed at all times to the operator.
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Lower Ralph C.
Manz Kenneth W.
Murray Gary P.
Kent-Moore Corporation
Tapolcai William E.
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