COMPRESSED AIR SYSTEMS

In the EN3 TRAMAN, we learned about the types of air compressors that an Engineman is required to operate. We also learned how the air is compressed; the requirements and methods of providing oil-free air; how moisture is removed from the air; and some of the safety precautions used when operating or working with compressed air systems. This chapter contains general information about maintenance and repair of compressed air systems. You should refer to the appropriate manufacturers technical manuals, maintenance requirements (3-M), and various information books for more specific information. Naval Ships Technical Manual, Chapter 551, Compressed Air Plants and Systems, is one good source of information.

AIR SYSTEMS

Compressed air is a form of power that has many important uses. An air compressor plant (fig. 6-1) is required to supply air of adequate volume, quality, and pressure at the various points of applications. This supply of air is measured as pounds per square inch gauge (psig). Air compressor plants or systems are classified as low-pressure (0 to 150 psig), medium-pressure (151 to 1,000 psig), or high-pressure (1,000 psig and above).

Aboard Navy vessels, the A division or repair division is responsible for maintenance and repair of compressed air systems.