Translations:AY Honors/Welding/Answer Key/38/en

1. Shut off the torch fuel valve first, which immediately extinguishes the flame
2. Shut off the torch oxygen valve
3. Close the acetylene cylinder valve
4. Close the oxygen cylinder valve
5. Bleed the acetylene line by opening the torch acetylene valve until the pressure reads zero on both the high and low pressure gauges
   (If the torch will be left for more than a few minutes and then reused, both lines must be bled before lighting the torch again)
6. Turn the acetylene pressure regulating screw counter – clockwise all the way out
7. Close the torch acetylene valve
8. Bleed the oxygen line by opening the torch oxygen valve until the pressure reads zero on both the high and low pressure gauges
9. Turn the oxygen pressure regulating screw counter – clockwise all the way out
10. Close the torch oxygen valve