It should turn around smoothly, without any 'hickups' (be sure to completely shut down the air compressor!). 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.
[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] Sullair is the world's largest manufacturer of rotary screw air compressors. It was founded in 1965 and headquartered in Michigan City, Indiana, USA. As a pioneer in the compressor field, Sullair's manufa.
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