| 摘要 |
A method and apparatus for recovering compressible refrigerant from a refrigeration system (12) and delivering the recovered refrigerant to a refrigerant storage container (86). Means are provided for determining the type of refrigerant being recovered and for determining the ambient temperature. The recovery method includes the steps of withdrawing refrigerant (from a refrigeration system (12) being serviced) compressing, condensing and delivering it to the refrigerant storage means (86). In the cylinder cool mode the system begins to withdraw stored refrigerant from the storage container (86). The refrigerant withdrawn from the storage container (86) is then compressed, condensed and passed through an expansion device (74). Otherwise through said expansion device (74) having a predetermined metering capability. If the refrigerant is a higher pressure refrigerant, such as R-22 or R-502, and the ambient temperature is greater than a predetermined value, it is passed through a flow control valve having an effective refrigerant metering capability which is between 5 to 20 times larger than the predetermined metering capability of the expansion device (74). <IMAGE> |
