... , vacuum,filling(oil,refrigerant)and monitoring. Manually-operated Refrigerant Recovery and Filling Machine HS-520Connection:1/4SAE quick coupler ... for recovery, regeneration, vacuum,filling(oil,refrigerant)and monitoring. large screen LCD display to guide operation with prompting ... for different users.Technical Data:working valtage:220V/50HZworking temperature: 10-40 'crate of recovery:270g/minrate of ...