1, before adding, you need to prepare tools, a hose filled with refrigerant and a refrigerant steel cylinder, and test the pressure according to the pressure gauge.
2. Then connect the hose to the refrigerant cylinder, including its pressure gauge. First, empty the air in the pipeline and set it aside for later use.
3. Next, start the air conditioner. Make the hose correspond to the fluorine filling port of the compressor, and then use the pressure of the steel cylinder to fill fluorine. It should be noted that in the whole process, it is necessary to exhaust the air inside first, then turn off the air conditioner, and then add refrigerant in this off state.
4. During the whole process, always pay attention to the change of the pointer of the pressure gauge, and its value should be below 0.5MPA. If it is too high, don't charge it again. Stop filling refrigerant within a reasonable range, otherwise too much will cause certain damage to the compressor.