What's the pressure gauge in the snow?!
The refrigerant (freon refrigerant is a plus) to many professional personnel to operate the number of horses is such a 23= 26=1.25 (a horse) horse horse horse 32=1.5 25=1.75 (1.5 HP) 51=2.5 (2 HP) 7=23.5 horse horse (3 horses) is now commonly used in air conditioning.
Read the inner layer of the black circle. If you want to know which circle to read, just understand the meaning of each circle. The numbers in the red circle generally indicate the temperature (Celsius), and there are two red units. I can't see clearly. Now the reading is 58psi 14.5psi=1, a standard atmospheric pressure =0.1 MPa =1Bar, this is the conversion of various pressure relationship, that is now low pressure air conditioning system was 0.4 MPa, basically in the standard range.
There are two scale tables and multi scale forms in the air conditioning snow scale. We usually read the outer ring scale, and the other scales have the following indication, which represents the evaporation pressure of refrigerants under different refrigerants.Turn left and turn right |The outer ring (black scale) for pressure values, in the 2 circle (red scale) are a number of snow (R22, R12) corresponding to the temperature value.
