Why is the cooling effect not good? What are the common reasons? Weking join you to make analyze together. As part 3st

3. there is air in the refrigeration system

Fault Analysis：Air in the refrigeration system will reduce cooling efficiency. The prominent phenomenon is that the suction and exhaust pressures increase (but the exhaust pressure has not exceeded the rated value), and the temperature at the compressor outlet to the condenser inlet is significantly increased. Due to the presence of air in the system, the exhaust pressure and exhaust temperature are all raised.

Removal method：It is possible to release air from the high-pressure shut-off valve several times after a few minutes after the shutdown, and it is also possible to properly fill some refrigerant according to the actual situation.