The compressor is the heart of any air conditioning or refrigeration system, so when it starts showing signs of not working correctly, technicians must act quickly in order to find out what is wrong.

National Compressor Exchange Inc. ships out all of its remanufactured compressors with computerized test results. According to the company, results are printed at the time of the test and included in ...

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A shift to angular and polar coordinates offers control engineers a more physically rigorous, PID-friendly approach ...