How does the air conditioning pressure gauge add readings?
The lower right corner, 2.5 below, has a "Mpa", which indicates the inner ring black. The number of units is "Mpa", that is, "MPa", the pointer pointing to 0.5, read as 0.5 MPa, and if it points to 2, then read as 2 mpa. 0.5 MPa, =5 pressure, 2 MPa, =20 pressure.
The scale on the meter is pressure. Through the pressure display, you can know the exhaust pressure of the compressor (high pressure) and the inlet pressure (low pressure), and judge whether the system is running properly, such as system congestion, refrigerant leakage and other faultsThere should be MPa (Zhao Pa) and bar (bar) on the table, which is the common pressure unit in china,0.1MPa = 1bar = 1 kg / cm2, kg / cm2 - this unit is not a statutory measure of the country and is not marked on the table, but we use it more orallyTake the common R22 refrigerant as an example, according to the different environment temperature, when the refrigeration system is working normally, the low voltage is generally at 3^6bar, and the high voltage is usually at 10^25bar.
First of all, air conditioning and fluorine are professionals do, not professional, do not self filling.Air conditioning refrigeration when filling, the most outer ring two digit number is the internal pressure of the air conditioner. (10 stands for 10 pressures, 20 stands for 20 pressures, and then by analogy)Different air conditioner models require different pressure, large frequency converter pressure and low fixed frequency machine pressure.Fluorine can not only look at the pressure, but also with refrigerant filling amount of comprehensive assessment.
