Figure D.1 Resistor Locations | Lincoln Electric IM579 specification

D-2

D-2

MAINTENANCE

FIGURE D.1 – RESISTOR LOCATIONS

5 PAIRS OF RESISTORS

CHECK VOLTAGES BETWEEN EACH TERMINAL AND FROM EACH RESISTOR TO CASE GROUND

5.Locate two sets of two resistors on the left side of the machine and three sets of two resistors on the right side of the machine. See Figure D.1. Do not touch the resistors or any other internal machine component. Using a DC voltmeter, check for any DC voltage that may be present across the termi- nals of each resistor and from each resistor to case ground (20 measurements in all). If a voltage is present, be careful not to touch these resistors.

WARNING

ELECTRIC SHOCK can kill.

•Proceed with caution being care- ful not to touch any internal machine components during the discharge procedure.

POWER WAVE 450

Image 37

Lincoln Electric IM579 manual Figure D.1 Resistor Locations

Contents

Safety Depends on You Invertec Power Wavetm Electric Shock can kill SafetyARC Rays can burn Fumes and Gases can be dangerous Cylinder may explode if damaged Welding Sparks can cause fire or explosionFor Electrically pow- ered equipment Electric and Magnetic Fields For Engine powered equipmentMay be dangerous Précautions DE Sûreté Please Examine Carton and Equipment For Damage Immediately Thank You Table of Contents Technical Specifications Power Wave InstallationPulse Pulse and Background Current Range Voltage Range High Frequency Precautions Safety PrecautionsInput Connections Select Suitable Location Input Power Connections Input Voltage Reconnect ProcedureInput Fuse and Supply Wire Considerations Ground Connections Output Connections Wire Feeder ConnectionsWork and Electrode Cable Connections Water Cooler Connections Operation Safety InstructionsOperating Instructions Fumes and Gases can be Save process information if desired Select your process information Operational Features and Controls Design Features and AdvantagesSynergic Welding Recommended Processes Case Front Controls Controls and Settings Operating Overlays Installing AN OverlayOverview Overlay Overlay TypesName Overlay ID Number = PULSE, GMAW, FCAW, and STICK/TIG Process Selection Overlay Operation Then Memory Location # is Empty Weld from Memory Overlay Figure B.6 Weld from MEMORY, Dual Procedure Overlay Weld from MEMORY, Dual Procedure Overlay Operation Position Procedure Dual Wire FEEDERS, Dual Procedure Overlay Optional Recall from Memory KEY Memory Location Numbers Limits Overlay Optional Operation Figure B.9 Setup Overlay Setup Overlay Positive Polarity Voltage Sensing Wire Feeder Setup DescriptionTable B.1 Positive Voltage Sensing Options Negative Polarity Voltage Sensing Positive Voltage Sensing Polarity Flux Cored ARC Welding Fcaw and Gmaw Procedures Overview of Welding ProceduresPulse Procedures STICK/TIG Procedures Explanation of Table B.3 Pulse processes Pulse Welding Thermal Protection Overload ProtectionOver Current Protection OPTIONS/ACCESSORIES AccessoriesWire Feeder Setup Guns and Cables Water Cooler Usage Routine and Periodic Maintenance MaintenanceInput Filter Capacitor DIS Charge Procedure Figure D.1 Resistor Locations Locate the #9 and #12 terminals, identified by Discharge labels, on each of the four Switch Preventive Maintenance Figure D.4 General Component Locations HOW to USE Troubleshooting Guide Troubleshooting Authorized Field Service Facility Troubleshooting GuideSists, contact your local Lincoln Play fans run Check circuit breaker 5-amp Observe Safety Guidelines Controls and Settings Power-up Inspect the overlay bar code Saved in memory are different Check for proper shielding gas Wiring Diagram Wiring Diagrams New Lessons in Arc Welding How To Read Shop DrawingsNeed Welding Training? Precaucion Aviso DE Limited Warranty