초록 ▼

A refrigerant servicing system includes a main supply tank of refrigerant and an auxiliary tank which is coupled to the main tank by a valve which is selectively controlled by a circuit also coupled to weight and pressure sensors to assure the main tank has a level of refrigerant adequate for provid

A refrigerant servicing system includes a main supply tank of refrigerant and an auxiliary tank which is coupled to the main tank by a valve which is selectively controlled by a circuit also coupled to weight and pressure sensors to assure the main tank has a level of refrigerant adequate for providing a continuous supply of refrigerant during servicing.

대표청구항 ▼

[ The invention claimed is:] [1.] A system for adding refrigerant to a refrigeration circuit comprising:a main supply of refrigerant;an auxiliary supply of refrigerant;a conduit and an electrically actuated control valve coupling said auxiliary tank to said main tank;a control circuit coupled to sai

[ The invention claimed is:] [1.] A system for adding refrigerant to a refrigeration circuit comprising:a main supply of refrigerant;an auxiliary supply of refrigerant;a conduit and an electrically actuated control valve coupling said auxiliary tank to said main tank;a control circuit coupled to said control valve for selectively actuating said control valve to assure said main supply has a predetermined amount of refrigerant therein; anda pressure sensor coupled to said conduit coupling said auxiliary supply to said main supply for determining the pressure in said auxiliary supply and wherein said pressure sensor is coupled to said control circuit which responds to signals therefrom to provide an operator prompt signal indicating that the auxiliary supply requires replacement when the detected pressure reaches a predetermined level.