Visit our website to learn more about Harris torches and proper safety precautions: //www.harrisproductsgroup.com This video demonstrates the proper ...
There are different schools of thought on this, but it is taught now to do as was demonstrated in this video; Turn on torch=Fuel Oxy, Turn Off torch=Oxy Fuel. One reason is mentioned by another poster is that Oxy can be accidently left running as it has no sound or smell like fuel gas, also it can travel easier into the Acet side due to the pressure which Acet doesn't have like O2. Thats what I was taught a couple years ago in my welding class anyway.
How to Setup a Oxy Acetylene Torch Set (Description.)
No No No, you need to cut the OXYGEN off first. The reason you cut Oxygen
off First, is to identify a possible Acetylene Leak. ALL TORCHES leak
eventually or can have defective components. By cutting off Oxy first, then
Acetylene, you'll see a dim flame still glowing on your torch...this is a
Warning Sign you have an acetylene leak. If you turn your torch off the
opposite way, you'll NEVER know, because you're burning out the flame or
popping it out. Guys, this is STRAIGHT from the Harris and Victor manual,
go look it up! The Safety portion was directly from a company Rep. They
have Billion dollar companies, lawyers and legal teams.....do you really
think they would write something Incorrect on their product, leaving an
open door for a lawsuit?
+Mike Fu You never check for Acetylene leaks by a flame test. Or for that matter for O2 leaks. That's just stupid. Don't you know how to do a passive leak test on a torch ?
Great video, but he didn't set his pressures dynamic and he turned the
oxygen off first. Turn off the fuel first and the oxygen second so the
oxygen will blow the fuel out of the line, ensuring that the flame isn't
still alive in the torch itself. By dynamic I mean that your gauges should
be set with what you're working with, i.e, having the torch open instead of
being static and closed.