Lincoln Electric IM481-B manual HOW to USE Troubleshooting Guide

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TROUBLESHOOTING

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.

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Contents Safety Depends on You IM481-BSafety Electric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcPlease Examine Carton and Equipment For Damage Immediately Table of Contents Output Control LOCAL-REMOTE Switch Meanings of Graphic SymbolsPower ON-OFF Switch Output Control DialCircuit Breaker Voltmeter SwitchThermal Protection Light Rating Plate Degree of protection provided by the enclosureChassis Ground Connection Earth Ground ConnectionSignifying the Earth Ground Connection Signifying the Chassis Ground ConnectionRecommended Processes & Equipment Operational Features & ControlsGeneral Machine Description Design SummaryWATER COOLER CONNECTOR Auxiliary Power ConnectionsRemote Control Connections Case FeaturesParalleling Machine & Circuit Protection Thermal Protection LightMETER OPTION Technical Specifications Input Power Connections InstallationSafety Precautions FALLING EQUIPMENT can causeOutput Cables Installation of Field Installed OptionsOutput Cable Connections Electric Shock can killUndercarriages K817P, K841 Wire Feeder Control Cable ConnectionsConnection of CV 500-I to LN-22 or LN-25 Operating Instructions Power Source OperationSafety Precautions ELECTRIC SHOCK can kill Duty Cycle Amps VoltsPIN LEAD NO Function Front View of 14-PIN Connector ReceptacleTerminal Strip Connections Routine Maintenance VAC Auxiliary Power for Water CoolerMachine and Circuit Protection Troubleshooting HOW to USE Troubleshooting GuideTROUBLESHOOTING GUIDE Trouble Cause What To DoFaulty Output Control potentiometer Trouble Cause What To Do Power I/O Switch Check Connecting the Remote Control to the MachineFault Protection Operation Output VoltagePower Diode Test Remote Control CheckPower Rectifier Bridge Assembly Checking Procedure Power Silicon Controlled Rectifier TestRubber Boot Gate leads plug to Control P.C. board To plug To T1 main transformerEnhanced Diagram Page Page Precaucion Warnung