Lincoln Electric SVM151-A service manual Troubleshooting & Repair

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F-12							F-12
TROUBLESHOOTING & REPAIR
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
The arc starting is not satisfactory.	1. The Hot Start Control may not				1. Check the Hot Start Control
	be set correctly for the process				(R2) and associated leads and
	being used.				connections.	Note: The	Arc
	2. Make sure the Output Control is				Force Control	and Hot	Start
					Control are interchangeable and
	adjusted	correctly	for	the
					may be switched to aid in trou-
	process being used.
					bleshooting.	See the Wiring
					Diagram.
					2. The Weld Control Board may be
					faulty.
When stick welding the electrode	1. The Arc Force Control may not				1. Check the Arc Force Control
“stubs”.	be set correctly for the process				(R3) and associated leads and
	being used. Increase the Arc				connections.	Note: The	Arc
	Force.				Force Control and Hot Start
	2. Make sure the Output Control is				Control are interchangeable and
					may be switched to aid in trou-
	adjusted	correctly	for	the
					bleshooting.	See the Wiring
	process being used.
					Diagram.
	3. Check the	welding	cables	for	2. The Weld Control Board may be
	loose or faulty connections.
					faulty.

CAUTION

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

MULTI-WELD 350