One of the most significant advancements in screw air compressor technology is the widespread adoption of Variable Speed Drive (VSD) systems. Traditional fixed-speed compressors run at a constant speed, regardless of the actual air demand.
[pdf] Therefore, users need to clean and maintain the oil shutoff valve regularly, optimize the compressor operating environment, use it in an environment with good ventilation and heat dissipation, away from volatile gases, debris and floating debris, etc., and replace the air filter in strict accordance with the pressure difference parameter requirements. .
[pdf] Check the isolation of the motor windings. Should be in the mage-ohms (you need an isolation tester / high voltage ohm meter for this). Check the voltage when the compressor is running. If the voltage drop significantly when the compressor starts/runs, you have a bad connection somewhere.
[pdf] 
