How much freon is added to the air conditioner is not determined by the number of pieces;
The amount of fluoridation of air conditioning is judged according to the pressure of the low pressure side of air conditioning (fluoridation port), and its pressure value is related to the ambient temperature, and will increase with the rise of temperature.
Under normal circumstances, when the low-pressure side pressure of the air conditioner is lower than 0.45MPa in summer, it indicates that the air conditioner refrigerant is insufficient, and the charged refrigerant pressure is between 0.45 and 0.5MPa.
Refrigerant filling method (fixed frequency air conditioning) :
Use a fluorine-filled hose to connect the refrigerant steel cylinder, pressure gauge, and air conditioner to the fluorine inlet. Use the refrigerant in the refrigerant cylinder to drain the air from the hose, and then tighten the connector.
Start the compressor and use the pressure difference between the cylinder and the refrigeration system to fill the refrigerant gas.
Observe the change of pressure gauge pointer during fluorine filling. The pressure gauge pointer can be maintained in the range of 0.45-0.5Mpa by intermittently filling fluorine.