Lincoln Electric IM10078 specifications TROubLEShOOTING

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E-4	TROubLEShOOTING	E-4

	Observe all Safety Guidelines detailed throughout this manual

PRObLEMS

(SYMPTOMS)

POSSIbLE

CAuSE

RECOMMENDED

COuRSE OF ACTION

Output Problems

Variable or "hunting" arc.	1.	Wrong size, worn and/or melted	1. Replace the contact tip.
		contact tip.
	2.	Worn work cable or poor work	2.	Verify all work and electrode con-
		connection.		nections are tight and that the
				cables are in good condition.
				Clean/replace as necessary.
	3. Wrong polarity.		3.	Adjust polarity to the recommend-
				ed procedure.
	4.	The gas nozzle is extended	4.	Adjust the gas nozzle and shorten
		beyond the contact tip or the wire		the stickout to 3/8 to 1/2 inches.
		stickout is too long.
	5.	Poor gas shielding on processes	5.	Check gas flow and mixture.
		requiring gas.		Remove or block sources of
				drafts.

When the trigger is pulled, the wire	The Run-In switch is “ON”.		Use the set-up Push-button to turn
feeds slowly.			Run-in OFF.

Poor arc starts with sticking or	1. Improper procedures or tech-		1. See "Gas Metal Arc Welding
"blast-offs", weld porosity, narrow		niques.		Guide" (GS-100).
and ropy looking bead.

CAuTION

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

RED-D-ARC LN-25™ PRO EXTREME

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Contents RED-D-ARC California Proposition 65 Warnings SafetyElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion PRÉCAuTIONS DE Sûreté Electromagnetic Compatibility EMC Methods of Reducing Emissions Mains Supply Vii Thank YouTAbLE of Contents Gearing Wire Feed InstallationElectrode Lead Safety PRECAuTIONSHIGh FREQuENCY Protection Weld CAbLE SIzEGuN buShING, ThuMb Screw and Socket hEAD CAP Screw ShIELDING GAS ConnectionLoading Spools of Wire PROCEDuRE to Install Drive Rolls and Wire GuIDESGuN Connection PRESSuRE ARM and ADJuSTMENTFIGuRE A.6 Across ThE ARC SET-uPSFIGuRE A.8 Protective OFF Wire FeederOperation VoltageProcess Limitations Recommended Power SOuRCESDefinition of Welding Terms Recommended ProcessesWFS Wire Feed Speed KNObCase Front Controls See Figure b.1 Digital DisplayWork Sense Lead Trigger ConnectorSET-uP PuShbuTTON Internal Controls Internal Controls Description Optional Timer KITSpool Retainer GAS PuRGE PuShbuTTON Rear ControlsFactory Installed EQuIPMENT AccessoriesDrive Roll Kits uSED Accessories With Oxo guns CALIbRATION Specification MaintenanceROuTINE Maintenance Periodic MaintenanceElectric ShOCK can kill TROubLEShOOTINGCAuSE COuRSE of Action PRObLEMS POSSIbLESymptoms RecommendedPOSSIbLE CAuSE PRObLEMSTROubLEShOOTING Diagrams 17.19 Dimension PrintRED-D-ARC LN-25 PRO Extreme RED-D-ARC LN-25 PRO Extreme Atenção Atenção