function such as recovery, regeneration, vacuum,filling(oil,refrigerant)and monitoring. Automatic Refrigerant Recovery and Filling Machine HS-520Connection:1/4SAE quick coupler ... R404a or R410a.Features: function for recovery, regeneration, vacuum,filling(oil,refrigerant)and monitoring. automatic operation and full ... and A/C system below 5kg. Automatic Refrigerant Recovery and Filling Machine HS-560