Checkout Current Transformers (CTs) and check resistance across each one while it is disconnected. All resistances should be within 10% of one another. Also do a diode test on the CT inputs on each compressor module. (The diode test is described in RTAA-SVB10B-EN.)
[pdf] They are powered by two counter-rotating screws that compress air as it moves through the compressor. These units are designed for continuous use, capable of operating 24 hours a day, 7 days a week.
[pdf] Let me explain how a rotary screw element is built up. See this example picture of an oil-free screw element. Compressor element (oil-free type). Photo: Atlas Copco Of course, we see the two rotors (male rot.
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