Tweco Victor Torch Handles,Cutting Attachments - Manual (Page 20)

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delivery gauge rises, there is a leak in the regulator seat. Take the
regulator to a qualified repair technician for repair.
7. After leak testing the system, open the cylinder valves and
proceed.
warning
If a leak has been detected anywhere in the system, discontinue
use and have the system repaired. Do not use leaking equipment.
Do not attempt to repair a leaking system while the system is under
pressure. Perform all operations in a well-ventilated area to help
prevent the concentration of flammable or toxic fumes.
sectIoN 6:
weLDING NozzLes
1. Inspect the cone end, coupling nut, O-rings, and welding nozzle
for damage, oil or grease. Do not use if damage or contaminants
are present.
warning
There must always be two O-rings on the cone end. The absence or
damage of either of these O-rings allows premixing of the oxygen
and fuel gases. This can lead to a sustained backfire within the
torch handle.
2. Connect the welding nozzle to the torch handle. Tighten the coupling
nut hAND tIGht only. Using a wrench could damage the O-rings
and create a faulty seal.
MULtI-FLAMe heAtING NozzLes (RoseBUDs)
Multi-flame heating nozzles are set up exactly as the welding nozzle.
Follow the safety and operation procedures described above for the
welding nozzle.
CaUtion
Never starve or choke a welding nozzle or multi-flame heating
nozzle. This causes overheating of the nozzle and a backfire or
sustained backfire may result. Should a sustained backfire occur
(flame pops and disappears and/or a hissing sound is heard, the
flame is burning inside the nozzle), immediately turn off the oxygen