Lincoln Electric SVM 122-A Trolyte in these capacitors is, Toxic. Avoid contact with any

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F-13			TROUBLESHOOTING & REPAIR						F-13
	Observe Safety Guidelines				TROUBLESHOOTING GUIDE
	detailed in the beginning of this manual.
	PROBLEMS			POSSIBLE AREAS OF	RECOMMENDED
	(SYMPTOMS)			MISADJUSTMENT(S)	COURSE OF ACTION
				WELDING PROBLEMS
	Poor arc	characteristics	when	1. Make sure the correct weld pro-	1. Check		reed	switch CR3 for
	welding in	the constant	voltage	cedures are being used.		proper	operation.		Switch
	(CV) mode.			(Electrode, Gas, Etc.)		should be normally open until
				2. Check the welding cables for		weld current is established.
				loose or faulty connections.	2.	Remove plug P6 from the start
						board. If problem is resolved,
						the start board may be faulty.
						Replace. See Wiring Diagram.
					3.	Check	the	welding	Mode
						switch (S4), the microswitches,
						and the associated wiring.
					4. Check		the	output capacitors
						and connections. A capacitor
						failure is indicated if the small
						vent plug on top of a capacitor
						is raised or blown out.
						WARNING: The liquid elec-
						trolyte in these capacitors is
						toxic. Avoid contact with any
						portion of your body. Clean
						up vented		electrolyte	using
						rubber gloves and a water
						damped cloth. Any elec-
						trolyte which gets on skin,
						clean with soap and water.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353.

IDEALARC DC-400

LINCOLN ®

ELECTRIC