An Introduction to Roofing and Painting by Guyer J. Paul

An Introduction to Roofing and Painting by Guyer J. Paul

Author:Guyer, J. Paul
Language: eng
Format: epub
Published: 2015-06-15T04:00:00+00:00


f) Oil/Moisture Separators. Oils used in the compressor could contaminate the air supply to the nozzles. To combat this, oil/moisture separators are installed at the blast machine. The separators require periodic draining and routine replacement of filters. Contamination of the air supply can be detected by a simple blotter test. In this test, a plain, white blotter is held 24 inches in front of the nozzle with only the air flowing (i.e., the abrasive flow is turned off) for 1 to 2 minutes. If stains appear on the blotter, the air supply is contaminated and corrective action is required. ASTM D 4285, Indicating Oil or Water in Compressed Air describes the testing procedure in more detail.



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