Welzh Fully Automatic Air Co Filling Machine Patented design pipeline innovatively designed to ensure high efficiency of air pump recovery and liquid recovery. Welzh Air 291220-WW has built-in data of various models of vehicles for selection. It can provide information such as the type and filing volume of refrigerant oil, the type and filing volume of cooling agent, etc.The programme can automatically match the corresponding refrigerant type and filling volume according to the manufacturer?s model. Features Refrigerant recovery and purification, drain used refrigerant oil, scheduled vacuuming, adjustable oil filling, adjustable refrigerant filling, and fully automatic operation. Oil and air can be automatically separated and collected through separate tubes to ensure separate recovery of steam and liquid. Large-size LCD colour display screen. Allows users to complete the AIRCO service work through the touch panel, and support long-distance real-time monitoring. The display is rich in content, and the operation process and data are clear at a glance, significantly improving the efficiency of maintenance of work. In addition, the device features three separate gauges and touch buttons for a superior user experience. Equipped with A USB upgrade port. The control software and air-conditioning database can be upgraded through special tools and software.