The CPS Pro-Set Oil-Less Refrigerant Recovery System Model CR500 is a high-quality single refrigerant recovery machine designed for HVAC and refrigeration systems. With a service pressure of 550 psi, this system can efficiently recover various types of refrigerants such as R-12, R-22, R-410a, and more. The model CR500 from CPS is known for its reliability and durability, making it a valuable addition to any business or industrial setting needing refrigerant recovery services. The machine comes on and seems to work like it supposed to. I used it to pull vacuum on a 2015 C3500 last summer. I never personally used it to recover refrigerant. That being said, it turns on pressures up and pull vacuum. Everything I know about this item is listed above. Please make sure this is item is correct for your application before ordering. Thanks for looking and have a great day.