Hobart Welding Products OM-2208 manual Maintenance & Troubleshooting, Lift-Arc TIG Procedure

4-7. Lift-Arc TIG Procedure

With Process Switch in the Lift-Arc

TIG position, start an arc as follows:

		1	TIG Electrode
	1	2	Workpiece
		2
		Touch tungsten electrode to work-
		piece at weld start point, hold
		electrode to workpiece for 1-2
		seconds, and slowly lift electrode.
		An arc will form when electrode is
	1 – 2	lifted.
“Touch”		Normal open-circuit voltage is not
	Seconds
		present before tungsten electrode
		touches workpiece; only a low
		sensing voltage is present between
		electrode		and workpiece. The
		solid-state output contactor does
		not energize until after electrode is
		touching		workpiece. This allows

electrode to touch workpiece with- out overheating, sticking, or getting contaminated.

Do NOT Strike Like A Match!

Ref. S-156 279

SECTION 5 – MAINTENANCE & TROUBLESHOOTING

5-1.	Routine Maintenance
	Y Disconnect power		. Maintain more often
	before maintaining.		during severe conditions.
	3 Months
	Replace	Repair Or	Replace Cracked
	Damaged Or	Replace
	Unreadable	Cracked	Torch Body
	Labels	Cables
			Repair Or Replace
			Cracked Cables
			And Cords
			Clean
			And
			Tighten Weld
			Connections
	6 Months
	Blow Out Inside
OM-2208 Page 20