Lincoln Electric SVM207-A service manual Gram

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F-6	TROUBLESHOOTING AND REPAIR				F-6
Observe Safety Guidelines detailed in the beginning of this manual.
	PROBLEMS		POSSIBLE AREAS OF	RECOMMENDED
	(SYMPTOMS)		MISADJUSTMENT(S)	COURSE OF ACTION
			OUTPUT PROBLEMS
No AC welding output. DC welding		1.	Make sure the Polarity Switch is	1. Check the operation of the
output and auxiliary power is nor-			in the proper position and is	Polarity Switch (S2). Also check
mal.			“seated” correctly.	the associated wires for loose or
		2.	Make sure the electrode is cor-	faulty connections. See Wiring
				Diagram.
			rect for the process being used.
				2. Check for continuity from lead
		3. Make sure the welding cables are
			not coiled or too long.	“S2” to lead “E” located in the
				main stator. See Wiring Dia -
				gram.
No constant voltage (CV) welding		1.	Make sure the Range Switch	1. Check the operation of the
output. Constant current (CC) and			(S1) is in the proper position (CV)	Range Switch (S1) and check
the auxiliary power are operating			and “seated” correctly.	the associated wires for loose or
normally.		2. Make sure the wire feeder is con-		faulty connections. See Wiring
				Diagram.
			nected correctly.
				2. Check for continuity from lead
				C1 to lead W1 located in the
				main stator. See Wiring Dia-
				gram.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call 1-888-935-3877.

RANGER® 3 PHASE