If your compressor is experiencing loading or unloading issues, check the electrical components, such as the solenoid valves, and inspect mechanical components like the air filter, intake valve, and pressure switch.
[pdf] Solution: Inspect the pressure switch settings, recalibrate if necessary, and check the controller for potential faults. Replace the pressure switch if recalibration does not resolve the issue.
[pdf] Compressor air screw VSDs usually have noise levels ranging from 60 dB to 85 dB, depending on the factors mentioned above. When selecting a compressor, it's important to consider the acceptable noise level for your specific application.
[pdf] 
