Welding Checklist

= Start up: =


 * ☐ Material cleaned and tungsten prepped
 * ☐ Shielding gas turned on (turn main tank valve counter-clockwise to open)
 * ☐ Regulator tank pressure (right gauge) and regulator output pressure (left gauge) is above zero - notify instructor when low
 * ☐ Machine plugged into 20A source, turned on (switch in back)
 * ☐ Fume exhaust turned on
 * ☐ Ground clamp secured to worktable or work
 * ☐ Proper attire, gloves, helmet adjusted

= Shut down: =


 * ☐ Hot work in safe place while cooling
 * ☐ Machine off
 * ☐ Shielding gas off (turn main valve clockwise to close, leave regulator as is)
 * ☐ Clean work area
 * ☐ Fume exhaust off
 * ☐ Sharpen tungsten for next person
 * ☐ Clean electrode holder, install tungsten, coil cables, stow foot pedal
 * ☐ Return in 20 minutes for fire safety check