Lincoln Electric IM402-B manual Troubleshooting

Page 15

TROUBLESHOOTING (CONTINUED)

 

 

 

 

 

 

 

 

 

 

 

 

TROUBLE

 

 

CAUSE

 

 

WHAT TO DO

 

 

 

 

 

 

 

 

 

 

 

 

C. Variable or sluggish welding.

 

 

1.

Poor work or electrode terminal

 

 

1. Check and clean all connections.

 

 

 

 

 

 

connection.

 

 

 

 

 

 

 

 

 

2.

Current too low.

 

 

2.

Check recommended currents

 

 

 

 

 

 

 

 

 

 

for rod type and size.

 

 

 

 

 

3.

Low line voltage.

 

 

3.

Check with power company.

 

 

 

 

 

4.

Welding leads too small.

 

 

4.

See Output Cable section.

 

 

 

 

 

5.

Old and badly frayed welding

 

 

5.

Replace.

 

 

 

 

 

 

cables.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D. Welder wonʼt shut off.

 

 

1.

Line switch has failed

 

 

1.

Replace switch.

 

 

 

 

 

 

mechanically.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

E. Polarity switch wonʼt turn.

 

 

1.

Contacts rough and pitted from

 

 

1.

Replace switch.

 

 

 

 

 

 

improper switching under load.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Idealarc AC/DC Safety Electric Shock can kill Welding and Cutting Sparks can Cause fire or explosion Sûreté Pour Soudage a LʼArc Précautions DE SûretéOn-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Recommended Processes and Equipment Design FeaturesOptions / Accessories and Compatible Lincoln Equipment General DescriptionInput Output Ratings Technical Specifications Idealarc AC/DCLocation InstallationSafety Precautions Copper Wire Sizes Fuse Size Input AmpsInstallation of Field Installed Options Falling Equipment can causeOutput Cable Size and Connection Electric Shock can kill Duty Cycle OperationGeneral Maintenance MaintenanceTroubleshooting Safety Precautions Electric Shock can killTrouble Cause What to do Troubleshooting Wiring Diagram 250 AMP Idealarc 60 HZ & 50 / 60 HZ Wiring Diagram 250 AMP Idealarc 50 HZ Page Perschutz GroundFuera del área de trabajo Cuerpo Inflammable Votre corpsDesconectar el cable de ali No operar con panel abierto o Keep your head out of fumesGuards off Use ventilation or exhaust to
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