Cold Jet i3 MICROCLEAN - Appendix A: Blast Air Quality; Plant Air (Central Compressed Air System)

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OM.MC.20160506
IN THIS SECTION
Plant Air (Central Compressed Air System) . . . . . . . . . . . 20
Portable Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
PLANT AIR (CENTRAL COMPRESSED AIR SYSTEM)
Manufacturing plants with central compressed air systems should have an after
cooler and a 2-stage coalescing filter assembly downstream of the receiver
tank. Hot metal pipes are an indication this is needed. To verify that the plant air
system is adequate for the i
3
MicroClean, the air compressor needs to produce
an air volume 10% greater than the i
3
MicroClean maximum air volume in
addition to the air volume consumed by normal plant operation. To determine
adequate air volume, watch the pressure gauge while blasting.
• If the gauge drops slowly, the compressor is insufficient.
• If the gauge drops quickly, there is a restriction or the pipe is too small.
• If the gauge stays steady, then the compressor and piping are adequate.
To maintain adequate pressure to the i
3
MicroClean:
• For distances less than 50 ft (15 m) between the air compressor and the i
3
MicroClean,
Cold Jet recommends a flexible 0.5 in (13 mm) air hose, preferably the hose
supplied with the i
3
MicroClean.
• For distances greater than 50 ft (15 m) between the air compressor and the
i
3
MicroClean, Cold Jet recommends a larger hose/pipe to maintain adequate
blast pressure
If an air drop is seldom used or is being used with the i
3
MicroClean for the
first time, water and rust may have collected in the line. Before connecting to
the air supply, purge the line to prevent contamination of the i
3
MicroClean.
APPENDIX A:
BLAST AIR QUALITY