Try to turn the compressor by hand. It should be possible to turn it around. It should turn around smoothly, without any ‘hiccups’ (be sure to completely shut down the air compressor!). Check the isolation of the motor winding.
[pdf] In this paper, an integral methodology for the modeling of a twin-screw compressor is presented. Starting from a known rotor profile, all the algorithms to calculate the second rotor profile, the size of the control volume, and the compressor's performance are presented.
[pdf] Loose screws, bolts, or other components can vibrate and create noise during operation. Tightening these components can often resolve the issue. 2. Worn Bearings Bearings wear out over time, causing friction and noise. Replacing worn bearings can restore quiet operation. 3. Intake Air Filter Clogged
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