How do you use this? How about two pointers? Don't use that kind of book. It's just as the saying goes, "take it step by step, how to use it. Thank you."!!!
The pressure gauge BLUE tube is connected to the low pressure end of the air conditioner, the red pipe is connected to the high pressure end, and the middle yellow tube is connected with a fluorine pipe or a vacuum pump. The pressure value is directly observed that is the line of Bar
The middle pipe is connected with vacuum pump, or cylinders, cylinders and low pressure switch open low pressure gauge connector is connected with the vacuum pump, vacuum pumping start the first open open, the air pump after the end, must first off the table on the switch, and then close the vacuum pump switch.
Blue red yellow high, connected with a low voltage, connected with vacuum pump, blue red switch full open, vacuum pump work for 10 minutes, then the blue red switch closed, wait 10 minutes, see the table pointer has no change, no change can add refrigerant, the refrigerant pipe connecting the first yellow bottle. Che Zifa, the cold medium, yellow head spin open air open blue switch, will be added, such as pointer does not move, turn off the blue switch, air conditioning, open blue switch, with a good bottle, then turn off the blue switch, change the refrigerant, then how much should be.! The red tube switch is always closed! Remember!
