... as recovery, regeneration, vacuum,filling(oil,refrigerant)and monitoring. Manually-operated Refrigerant Recovery and Filling Machine HS-520Connection:1 ... : functions for recovery, regeneration, vacuum,filling(oil,refrigerant)and monitoring. large screen LCD display to guide operation ... and A/C system below 5kg. special canned refrigerant connector for different users.Technical Data:working valtage ...