Abstract: A hand-transportable unit for transferring refrigerants between containers includes a pump to remove refrigerant from a first container The pump is driven by a pneumatic motor. The pump is capable of transferring refrigerant in liquid form, vapor form, or simultaneously in both forms. A condenser for cooling refrigerant is in fluid communication with the pump. The unit also includes a compressor for driving the pneumatic motor to operate the pump. Optionally, the pump may be powered from an external source of compressed gas. The other components of the unit are mounted to a handcart including a frame and wheels to facilitate movement of the unit. In a preferred embodiment, unit is configured for self-evacuation by use of the pump in order to avoid cross-contamination of different refrigerants during subsequent use of the unit.

Abstract: A refrigerant reclamation system for a refrigeration system having a refrigerant therein. The system includes a pump for removing refrigerant from the refrigeration system. The pump is driven by a pneumatic motor. The pump has a first mode of operation for removing refrigerant in a substantially liquid phase and a second mode of operation for removing refrigerant in a substantially gaseous phase. A refrigerant heat exchanger for cooling refrigerant passing therethrough is in fluid communication with the pump. A refrigerant recovery container is connected to the heat exchanger for receiving the cool refrigerant therefrom. A compressed gas drives the pneumatic motor so that the pump removes refrigerant from the refrigeration system and is passed through the heat exchanger.