LIGHTNG THE WELDING TORCH

                                                                 

 1) Crack the cylinder valve on oxygen and cylinder by opening the valve and closing it quickly in order to blow out foreign matter.

2)Attach the oxygen and acetylene pressure regulator to the respective oxygen and acetylene cylinders.

3)Attach the hoses to the pressure regulators.

4)Attach the other ends of the two hoses to the welding torch.

5)Select the proper tip(nozzle) and mixing head and attach it to the welding torch.

6)Back off the regulator screws on both units until the screws turns freely.This is necessary to eliminate a
sudden surge of excessive pressure on the working side of the regulator when the cylinder is turned on.
7)Make sure that both torch needle valves are turned off  (clock-wise).

8)Open the acetylene cylinder valve 1/4 to 1/2 turn. Open the oxygen cylinder valve all the way.

9)Open the acetylene (torch) needle valve one full turn.Turn the adjusting screw on the acetylene pressure regulator clockwise until acetylene gas comes from the torch tip.

10)Light the welding torch using a spark lighter.

11)The acetylene pressure regulator screw should then be adjusted until there is a gap of about 6mm between the torch tip and the flame.This is the proper pressure for the size of the tip being used regardless for the gauge pressure shown on the working pressure gauge on the regulator.

12)Oxygen needle valve on the torch is then opened to adjust the welding flame.