Lincoln Electric IM901-A manual PRObLEMS, Symptoms, POSSIbLE, Cause Recommended Course of Action

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E-2	TROUbLESHOOTING	E-2

	Observe all Safety Guidelines detailed throughout this manual

PRObLEMS

(SYMPTOMS)

POSSIbLE

CAUSE

RECOMMENDED

COURSE OF ACTION

Digital Display Models Error Codes

	Fault Code	Description		Possible Adjustments
Err 81	Motor overload, long term.	1. The wire drive motor has over-	1.	Check that the electrode slides
		heated.		easily through the gun and cable.
			2.	Remove tight bends from the gun
				and cable.
			3.	Check that the spindle brake is
				not too tight.
			4.	Verify a high quality electrode is
				being used.
			5.	Wait for the error to reset and the
				motor to cool (approximately 1
				minute).

Err 82	Motor overload, short term.	1. The wire drive motor current draw	1.	Check that motor can turn freely
		has exceeded limits, usually		when idle arm is open.
		because the motor is in a locked	2.	Verify that the gears are free of
		rotor state.		debris and dirt.

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

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Contents LN-25PRO Safety Depends on YouCalifornia Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding and Cutting Sparks can Cause fire or explosionPrécautions DE Sûreté On-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTAbLE of Contents Installation Weld CAbLE SIzE Safety PrecautionsLocation High Frequency ProtectionShielding GAS Connection 3INSTALLATIONA-3Function Pin Wiring CAbLE ConnectionsChanging the GUN Receiver bUSHING Procedure to Install Drive Rolls and Wire GuidesFe, CrNi Pressure ARM AdjustmentLoading Spools of Wire GUN ConnectionFigure A.5 Across the ARC SET-UPSFigure A.7 Figure A.9 8INSTALLATIONA-8Operation Process Limitations Recommended Power SourcesDefinition of Welding Terms Recommended ProcessesAnalog Voltmeter Case Front Controls See Figure b.1Description Extra Torque Wire Feed Speed KNObWire Feed Speed, CV Operation Minimum Arc Volts Maximum WFSPolarity LED Figure b.2 Internal ControlsCold Feed PUSHbUTTON CV/CC SwitchInternal Controls Description Figure b-3 Constant Current Wire WeldingRear Controls ItemdescriptionScfh POWER-UP SequenceGAS Purge PUSHbUTTON Flow MeterDrive Roll Kits AccessoriesFactory Installed Equipment Wire TypeAccessories Kit Accessories K1500-5 Gun Receiver Bushing compatible Installation of the K590-6 Water Cooling KIT CALIbRATION Specification MaintenanceRoutine Maintenance Periodic MaintenanceBOARD Wire Feed Speed ValidationTo change the wire feed speed calibration See Figure D.2 Model gearingElectric Shock can kill TROUbLESHOOTINGPOSSIbLE PRObLEMSSymptoms Fault Code Description Possible AdjustmentsOutput Problems TROUbLESHOOTING Model DiagramsLN-25 PRO Across the ARC Diagrams Dimension Print LN-25 PRO Across the ARC Model Precaucion Warnung