Lincoln Electric IM901-A manual Output Problems

E-3	TROUbLESHOOTING	E-3
	Observe all Safety Guidelines detailed throughout this manual

PRObLEMS

(SYMPTOMS)

POSSIbLE

CAUSE

RECOMMENDED

COURSE OF ACTION

Output Problems

The feeder does power up - no dis-	1.	The work sense lead is discon-	1.	Connect the work sense lead to
play, no cold feed.		nected or is a poor electrical con-		the work in a location free of dirt,
		nection. (Across the arc models)		rust and paint.
	2.	The power source is OFF.	2.	Turn ON the power source.
	3.	The circuit breaker for the wire	3.	Reset the circuit breakers.
		feeder on power source have
		tripped. (control cable models)
	4.	The control cable may be loose or	4.	Tighten, repair or replace the con-
		damaged. (control cable models)		trol cable.
The wire feeder power up but there	1.	The contactor coil connections are	1.	Verify the contactor coil connec-
is no output when the trigger is		loose.		tions.
pulled. The shielding gas is flowing	2.	The contactor has failed.	2.	Replace the contactor.
and the drive rolls turn.
No shielding gas.	1.	The gas supply is OFF or empty.	1.	Verify the gas supply is ON and
				flowing.
	2.	The gas hose is cut or crushed	2.	Route the gas hose so it avoids
				sharp corners and make sure
				nothing is on top of it. Repair or
				replace damaged hoses.
	3.	The flow meter valve is closed.	3.	Open the flow meter valve.
	4.	Dirt or debris is in the solenoid.	4.	Apply filtered shop at 80psi to the
				solenoid to remove dirt.
	5.	There is a loose solenoid connec-	5.	Remove the cover and check that
		tion.		all connections are in good condi-
				tion.
	6.	The solenoid has failed.
Inconsistent wire feeding or wire not	1.	The gun cable is kinked and/or	1.	Keep the gun cable as straight as
feeding but drive rolls turning.		twisted		possible. Avoid sharp corners or
	2.	The wire is jammed in the gun and		bends in the cable.
			2.	Remove the gun from the wire
		cable.		feeder and pull the jammed wire
				out of the gun and cable.
	3.	The gun liner is dirty or worn.	3.	Blow dirt out of the liner with low
				pressure (40psi or less). Replace
				the liner if worn.
	4.	The electrode is rusty or dirty.	4.	Use only clean electrode. Use
				quality electrode, like L-50 or L-56
				from Lincoln Electric.
	5.	The contact tip is partially melted	5.	Replace the contact tip.
		or has spatter.
	6.	Improper gun liner, tip, drive rolls	6.	Verify the proper parts are
		and/or inner wire guide.		installed.

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.

LN-25™ PRO ACROSS THE ARC MODEL