Victor 315FC - Page 33

SET-UP AND SAFE OPERATING PROCEDURES
5-29
0056-0114
WARNING
• Besuretoclearhosesinawell-ventilatedarea.Theescapinggasescreate
conditions for fires and explosions.
• Keephosesclearofanyfallingmetal,slag,orsparks.
• Neverallowhosestobecomecoatedwithoil,greaseordirt.Thiscouldconceal
damaged areas on the hoses.
• Examine the hoses before attaching the torch handle or regulators.If any cuts,
burns, worn areas, cracks, or damaged fittings are found, repair or replace
the hose.
5.04 TORCH HANDLE
Since cutting attachments, brazing nozzles, and heating nozzles are all connected to the torch handle,
the torch handle is probably the most frequently used item in a welding shop. Always be sure to
protect the torch handle from possible damage or misuse.
Inspect the torch handle head, valves, and hose connections for oil, grease, or damaged 1.
parts.
Inspect the hose connections in the same manner. 2. DO NOT use them if oil, grease, or
damage is detected.
Inspect the torch handle. The tapered seating surfaces in the head must be in good condition. 3.
If dents or burned seats are present, the seat must be resurfaced. If the torch handle is used
with poor seating surfaces, backfire may occur.
If using external check valves or flashback arrestors, follow the manufacturer’s installation 4.
instructions.
See Note on page 19 and the Caution on page 20 for the use of add-on check valves and 5.
flashback arrestors.
Attach the hose to the torch handle and tighten securely with a wrench.6.
VICTOR
®
strongly recommends using reverse flow check valves on the torch handle if they are not
already built into the torch handle. Check valves reduce the possibility of mixing gases in the hoses
and regulators which may cause a flashback. A flashback can propagate into the hoses, regulators, or
cylinders, which may result in serious damage to the equipment or injury to the operator. VICTOR
®
also
recommends using external flashback arrestors if the torch handle does not have internal flashback
arrestors built in, to further reduce the possibility of a flashback (see NOTE, page 17).
5.05 WELDING NOZZLE
Inspect the cone end, coupling nut, O-rings, and welding nozzle for damage, oil or grease. 1.
Do not use if damage or contaminants are present.
Setting Up Equipment for Welding