CASE STUDY: PCC STRUCTURALS Variable Speed Drive Air Compressor Helps PCC Save Energy PCC Structurals, a global metal casting foundry, has a 72,000-square-foot facility in Carson City, Nevada, that makes air and vacuum investment cast components for aerospace, energy and commercial applications. PCC is just one of many manufacturing facilities throughout Nevada that uses compressed air in its manufacturing process. Ten to 20 years ago it was a common practice to size motors, including air compressors, larger than necessary to ensure that the capacity needed would be available. Oversized air compressors that operate long hours can be a large energy drain. Even if an air compressor is not at the end of its useful life, retroftting the equipment with a properly

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