Reasons Why The Screw Air Compressor Is Always Loaded

Fault phenomenon: They cannot be unloaded, that is, it is always loaded. The screw air compressor continues to load and run when it exceeds the rated pressure during operation. When the set maximum pressure value is reached, the screw air compressor trips and stops, or the safety valve is activated. Analysis of reasons why screw air compressor cannot be unloaded:

① The pressure switch is improperly set or it drifts after setting, reporting false numbers;

② The intake valve is not working properly, stuck, etc.;

③ The discharge solenoid valve fails when the system stops using gas, and the pressure rises slowly, not all at once like loading;

④ The control circuit fails;

⑤ The loading solenoid valve fails, the phenomenon is that it is unloading but loading at the same time, and the loaded gas volume is greater than the unloading, so the pressure continues to increase; Solutions for compressors that cannot be unloaded:

① Repair the pressure switch and replace it when necessary;

② Replace the maintenance package of the intake valve and add lubricating oil;

③ Repair or replace the unloading solenoid valve;