How to perform performance test on refrigerator four-way valve test bench

　　

The test bench is controlled by an industrial computer + PLC as the main control center, and the PC program is responsible for data processing and logic control, which is easy to operate. How does the refrigerator four-way valve test bench perform performance testing? Let's see how Guangzhou Zhipinhui Electronic Technology introduces it.

　　Four-way valve performance test:

① Turn on the power, connect the air source, adjust the pressure reducing valve, adjust the maximum switching pressure to 3.1+0.2MPa; adjust the minimum switching pressure to

0.34±0.1MPa, adjust the internal leakage pressure gauge to 1±0.1MPa and adjust the voltage of the voltage regulator to the rated voltage of the coil 180V

nearby. Manually install the valve, block the E and C pipes with a special fixture, connect the S pipe to the atmosphere, and connect the D pipe to the air source. Confirm that the valve has been installed and install the coil.