Compressed Air Best Practices - October 2008 - (Page 14) | 10/08 Focus Industry AUTOMOTIVE TRANSIT | COMPRESSED AIR AUDIT OF THE MONTH Transit Bus Manufacturing Blast nozzle erosion of even 1/16th of an inch can increase the air consumption by 30%. A 10 psi plant pressure increase will increase the air consumption by 9%. An engineered nozzle like this is safer, uses less air and is much quieter than a typical pipe style air wand. (Source www.silvent.com) p Grit blasting nozzle maintenance was less than optimal. Allowing the nozzles to wear excessively before replacement causes higher than desired compressed air consumption, adding to the plant pressure problem at peak flows. Open pipe air wands were being used to clean away the blasting media from the bus frames after blasting. These wands were deemed to be a safety hazard as they did not have dead-man switch control, generated excessive noise and wasted compressed air, causing higher than desired peak flows. Air winches were being used to move the assembly line. These large air motors were found to use about 10 times the energy of an equivalent electric motor. Breathing air purifiers, essentially a desiccant air dryer with a catalytic converter element on the back end to remove any dangerous carbon monoxide from the breathing air supply, were found to be running constantly, even during evenings and weekends when painting operations were not in operation. p p p 14 http://www.silvent.com http://www.teseoair.com http://www.teseoair.com
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