Lincoln Electric IM10031-A manual TROUbLESHOOTING, Electric Shock can kill

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TROUbLESHOOTING

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HOW TO USE TROUbLESHOOTING GUIDE

WARNING

Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed throughout this manual.

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This Troubleshooting Guide is provided to help you locate and repair possible machine malfunctions. Simply follow the three-step procedure listed below.

Step 1. LOCATE PROBLEM (SYMPTOM).

Look under the column labeled “PROBLEM (SYMP- TOMS)”. This column describes possible symptoms that the machine may exhibit. Find the listing that best describes the symptom that the machine is exhibiting.

Step 2. POSSIBLE CAUSE.

The second column labeled “POSSIBLE CAUSE” lists the obvious external possibilities that may contribute to the machine symptom.

Step 3. RECOMMENDED COURSE OF ACTION This column provides a course of action for the Possible Cause, generally it states to contact your local Lincoln Authorized Field Service Facility.

If you do not understand or are unable to perform the Recommended Course of Action safely, contact your local Lincoln Authorized Field Service Facility.

WARNING

ELECTRIC SHOCK can kill.

Turn the input power OFF at the welding power source before installation or changing drive rolls and/or guides.

Do not touch electrically live parts.

When inching with the gun trigger, electrode and drive mechanism are "hot" to work and ground and could remain energized several seconds after the gun trigger is released.

Welding power source must be connected to system ground per the National Electrical Code or any applicable local codes.

Only qualified personnel should perform maintenance work.

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

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Contents LN-25 Tmpro Safety California Proposition 65 WarningsElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcElectromagnetic Compatibility EMC Methods of Reducing Emissions Mains Supply Vii Please Examine Carton and Equipment For Damage ImmediatelyOn-Line Product Registration TAbLE of Contents Installation Technical Specifications LN-25 PRO K2613-1, K2613-2Wire SIzES LN-25 PROSafety Precautions LocationHigh Frequency Protection Weld CAbLE SIzE3INSTALLATIONA-3 Power SourceWire Feeder Analog Control CAbLE K1797-xxFunction Pin Wiring CAbLE ConnectionsShielding GAS Connection Wire Drive Configuration Procedure to Install Drive Rolls and Wire GuidesChanging the GUN Receiver bUSHING Pressure ARM Adjustment Loading Spools of WireGUN Connection Fe, CrNiPower Source to LN-25 PRO Across the ARC SET-UPSDescription Figure A.7 9INSTALLATIONA-9 Figure A.9Safety Precautions OperationGeneral Description Case Front Controls See Figure b.1 Figure b.1Wire Feed Speed KNOb Wire Feed Speed, CV OperationMinimum Arc Volts Maximum WFS Extra TorquePolarity LED Internal Controls Figure b.2Step Trigger Interlock Switch Internal Controls DescriptionCold Feed PUSHbUTTON Step TriggerConstant Current Wire Welding Figure b-3Itemdescription Rear ControlsPOWER-UP Sequence GAS Purge PUSHbUTTONFlow Meter Liter/MinAccessories Factory Installed EquipmentDrive Roll Kits Electrode SIzEOn at all times Accessories K1500-5 Gun Receiver Bushing compatible Installation of the K590-6 Water Cooling KIT Maintenance Routine MaintenancePeriodic Maintenance CALIbRATION SpecificationWire Feed Speed Validation To change the wire feed speed calibration See Figure D.2Model gearing BOARD LN-25 PROTROUbLESHOOTING Electric Shock can killPRObLEMS SymptomsPOSSIbLE Cause Recommended Course of ActionTROUbLESHOOTING Diagrams Enhanced DiagramDimension Print Precaucion Warnung