Translations:AY Honors/Welding/Answer Key/30/en

1. Make sure the regulator adjusting screws on both the oxygen and acetylene regulators are backed out fully counter – clockwise
2. Open the acetylene cylinder valve ¼ to ½ turn
3. Open the torch acetylene valve about ½ turn. The acetylene valve lines up with the red hose
4. Turn the acetylene regulator adjusting screw clockwise until 5 pounds pressure is read on the low pressure gauge
5. Close the torch acetylene valve
6. Open the oxygen cylinder valve all the way until the valve stops
   Stand out of the way of the gauges when opening the oxygen bottle to prevent serious injury if the regulator valve fails
7. Open the torch oxygen valve about ½ turn
   The oxygen valve lines up with the green hose
8. Turn the oxygen regulator adjusting screw clockwise until 5 pounds pressure is read on the low pressure gauge
9. Close the torch oxygen valve
10. Before lighting and using the torch, check the system for leaks
11. Close the cylinder valves. If a cylinder gauge shows a pressure drop, there is a leak.
12. If a leak is indicated, listen, smell and touch around all fittings and hoses, or use soapy water to find the leak.