| Terms |
Página 8 de 12 Plenum: A sealed chamber at the inlet or outlet of an air handler. The duct attaches to the plenum. Potential relay: A switching device used with hermetic motors that break the circuit to the start windings after the motor has reached approximately 75% of its running speed. Pressure switch: A switch operated by a change in pressure. psi: Abbreviation for pounds per square inch. psig: Abbreviation for pounds per square inch gage Psychrometer: An instrument for determining relative humidity. Pump down: To use a compressor to pump the refrigerant charge into the condenser and/or receiver. Purge: To remove or release fluid from a system. Receiver-dryer: A component in a refrigeration system for storing and drying refrigerant. Reciprocating compressor: A compressor that uses a piston in a cylinder and a back-and-forth motion to compress vapor. Refrigerant: The fluid in a refrigeration system that changes from a liquid to a vapor and back to a liquid at certain pressures. Refrigerant reclaim: Recovering the refrigerant and processing it so that it can be reused. Refrigerant recovery: To remove refrigerant in any condition from a system and stored it in an external container without necessarily testing or processing it in any way. |
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