GTA and GMA Welding Do's and Don't's
Don't's
- Do not use carbon tetrachloride or other chlorinated hydrocarbons for cleaning aluminum before welding. OSHA recommends using alcohol and acetone as chemical cleaners.
- Do not perform welding in any area where fumes from solvents are present.
- Do not work on any wiring in an energized circuit.
- Do not lay the torch on the work or worktable. Hang it up in a safe place so the electrode is not touching metal that may be grounded.
- Do not change a tungsten electrode before it has cooled or while the transformer switch is in the "on" position.
- Do not change spools of filler wire while the generator or rectifier is on.
- Do not use defective welding cable. If a connection is operating hot, you may have a poor electrical connection.
- Do not strike an arc on a compressed gas cylinder.
- Do not chip or grind without safety goggles or a suitable face shield.
- Do not move individual cylinders unless the valve protection cap, where provided, is in place and tight.
- Do not drop or abuse cylinders in any way.
- Do not use a hammer or wrench to open cylinder valves.
- Do not force connections that do not fit.
- Do not tamper with cylinder safety devices.
- Do not expose a hose to oil or grease; these rot the rubber and cause a hazard.
Knowledge Check Choose the best answer for the question.
4-6. What is the probable cause if a connection is operating hot when welding?
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