Equipment noise

When a screw air compressor operates under variable-frequency control, noise levels increase during frequency ramp‑up and ramp‑down but return to normal once the frequency stabilizes. This phenomenon is primarily influenced by electromagnetic harmonics, mechanical resonance, and airflow pulsations.…

The noise level of the screw compressor’s internal unit is a critical indicator for assessing the equipment’s operational condition. Under normal operating conditions, it typically ranges from 70 to 85 decibels, with the exact value influenced by the…