Tweco 38 CutMaster - Manual (Page 24)

INSTALLATION 3-6 Manual 0-2964
3.6 Check Air Quality
To test the quality of air, put the RUN / SET switch in the SET (down) position, place a welding filter lens in front of
the torch and turn on the gas. Any oil or moisture in the air will be visible on the lens. Do not start an arc!
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