6
Never stand in front of or in back of a
regulator when opening a cylinder valve.
4. Regulator adjusting screws should be turned counterclockwise to
relieve pressure on diaphragm before opening cylinder
valves. (Fig. 4) If this is not done, pressure from cylinder
can damage diaphragm and render regulator inoperable.
fig. 3
3. Attach regulators to proper cylinders and tighten securely
with a wrench. (fig. 3) Make sure they are tightened in
correct directions. (Normally clockwise for oxygen and
counterclockwise for acetylene.)
Attaching Oxygen
Regulator
11
11. Neutral flame adjusting
a. Refer to cutting tip or welding nozzle chart to determine
the proper regulator pressures.
b. Open oxygen valve on the torch handle (and the preheat
oxygen valve on cutting attachment), adjust the oxygen
regulator to the desired working pressure. Then close
the oxygen valve.
c. Open acetylene valve on the torch handle, adjust the
acetylene regulator to the desired working pressure.
Then close the acetylene valve.
d. Hold torch in one hand and spark lighter in the other. (fig
10)
fig. 10
e. Open acetylene torch valve about 1/4 turn and ignite the
acetylene gas coming out of the tip.
Always point torch away from any person
when lighting.
Lighting Fuel Gas
