Lincoln Electric IM916 manual PRObLEMS POSSIbLE Cause, Recommended, Symptoms Course of Action

E-3		TROUbLESHOOTING		E-3
	Observe all Safety Guidelines detailed throughout this manual
	PRObLEMS		POSSIbLE CAUSE	RECOMMENDED
	(SYMPTOMS)			COURSE OF ACTION
Variable or “hunting” arc.		1.	Wrong size, worn and/or melted
			contact tip. - Replace if neces-
			sary.
		2.	Improper Drive Tension.
		3.	Worn work cable or poor work
			connection. - Replace if neces-
			sary.
		4	Loose electrode or work cable
			connections.
		5.	Wrong polarity. - Make sure elec-	If all recommended possible areas of
			trode polarity is correct for	misadjustment have been checked
			process being used.	and the problem persists, Contact
				your local Lincoln Authorized
		6.	Gas nozzle extended beyond gun	Field Service Facility.
			tip or wire stickout too long while
			welding.
		7.	Poor gas shielding on processes
			requiring gas. - Check gas flow
			and mixture.
Poor arc striking with sticking or		1.	Improper procedures or tech-
“blast-offs”, weld porosity, narrow			niques. - See “Gas Metal Arc
and ropy looking bead, or electrode			Welding Guide” (GS-100).
stubbing into plate while welding.
		2.	Improper gas shielding - Clean
			gas nozzle. Make certain that gas
			diffuser is not empty or turned off.
			Make certain gas flow rate is
			proper.
		3.	Remove gun liner and check rub-
			ber seal for any sign of deteriora-
			tion or damage. Be sure set
			screw in connector block is in
			place and tightened against the
			liner bushing.
		4.	Improper gear box ratio configura-
			tion.
		5. Power Source calibration issues.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

POWER FEED™ 10M DUAL WIRE FEEDER