Lincoln Electric IM620-B manual HOW to USE Troubleshooting Guide

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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.

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

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Contents LN-25 Portable CV/CC Semiautomatic Wire Feeder California Proposition 65 Warnings SafetyElectric Shock can kill Cylinder may explode if damaged Sûreté Pour Soudage a L’Arc Précautions DE SûretéPlease Examine Carton and Equipment For Damage Immediately Table of Contents Installation Power Source Connection Safety PrecautionsGUN Cable Connection to Feeder INVERTEC, CV300 and Other Newer Lincoln Power SourcesCV Adapter For GMA GUN and CablesWeld Cable Connection Wire Feed Drive Roll and Guide Tube KitsElectrode Cable Connection Work Cable ConnectionGeneral Description OperationRecommended Processes and Equipment Welding CapabilityWire Feed Mode Switch Electrode Polarity SwitchWire Speed Dial and Range Switch LN-25 Instruments and ControlsWork Clip Lead GAS Post PRE-FLOW Timers OptionalAWG Remote ARC Voltage Control OptionalLoading Electrode Sequence of OperationMounting 22 to 30 LB READI-REELCOILS Mounting 10 to 30 LB SpoolsIdle Roll Pressure Setting Loading Wire DriveSetting ARC Sensing Wire Feed Speed VV CC Mode Presetting Wire Feed SpeedSetting Constant Wire Feed Speed CV Mode In/Min Making a WeldWelding Procedure AT END of CoilMotor Overload Shutdown Automatic Protection ShutdownOvervoltage Shutdown Table C.1 AccessoriesLN-25 Option Chart K430-2 GAS Solenoid KIT Accessories Optional AccessoriesK434-1 GAS Flow Timer KIT Remote Output Control Options and Control Cable Assemblies K461 Pulse Power Control CableK443-2 LN-25 Contactor KIT K443-3 LN-25 Contactor KITK432 Remote Control Cable Assembly K433 Power Source Remote BOXK439 Remote Extension Cable Assembly K625, K626, K627 Remote Control Cable AssemblyCable Power SourceType Rating Electrode Connection K444, K444-1 or K444-2 Remote Voltage Control KITDia. Hole Drive Roll & Guide Tube Wire Sizes Used Kit NoRoutine Maintenance MaintenanceAdjusting Speed Sensor Module Circuit Protection and Automatic ShutdownCalibration of LN-25 Wire Speed Dial HOW to USE Troubleshooting Guide TroubleshootingRecommended Course of Action Problems Possible Symptoms CauseFeeding Problems Weld Problems Wiring Diagram Wiring Diagram LN-25 Physical Dimensions DimensionsLN-25 LN-25 Fuera del área de trabajo Cuerpo GroundInflammable Votre corps PerschutzGuards off Keep your head out of fumesUse ventilation or exhaust to Desconectar el cable de ali No operar con panel abierto o