Lincoln Electric K1780-1 manual Possible Cause, Symptoms, Problems, Recommended, Course of Action

E-2			TROUBLESHOOTING						E-2
	Observe all Safety Guidelines detailed throughout this manual
	PROBLEMS			POSSIBLE CAUSE				RECOMMENDED
	(SYMPTOMS)						COURSE OF ACTION
Rough wire feeding or wire not			1. Gun cable kinked and / or twist-
feeding but drive rolls are turning.			2.	ed.
				Wire jammed in gun and cable.
				Check for mechanical restric-
			3.	tions in feeding path.
				Check for current position of
				drive rolls relative to split wire
			4.	guide groove.
				Drive rolls may not be seated
			5.	properly.
				Gun cable dirty, clean if neces-
			6.	sary.
				Worn drive roll.		and/or
			7.	Electrode	rusty
				dirty.Cable frayed, or poor sol-
				der joint at work or electrode			If all recommended possible areas
				lug.
			8.	Worn nozzle or cable liner.			of misadjustment have been
							checked and the problem persists,
			9.	Replace if necessary.			Contact your local Lincoln
				Partially flashed or melted con-			Authorized Field Service Facility.
				tact tip. Replace if necessary.
			10. Incorrect drive roll pressure.
				Readjust if necessary.
			11. Improper liner, tip or inner /
				outer guides. Replace if neces-
				sary.
			12. Incorrect wire drive or gear
				ratio selection on the control
				P.C. board.
Variable or “hunting” arc.			1.	Wrong size, worn and/or melted
			2.	contact tip.
				Worn work cable or poor work
			3.	connection.
				Loose electrode or work cable
				connections.
				CAUTION
If for any reason you do not unders		tand 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 10 / R