Lincoln Electric IM784 Troubleshooting Guide, Problems Possible Areas Symptoms Misadjustments

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E-2

TROUBLESHOOTING

E-2

 

 

 

TROUBLESHOOTING GUIDE

Observe Safety Guidelines detailed in the beginning of this manual.

PROBLEMS

POSSIBLE AREAS OF

(SYMPTOMS)

MISADJUSTMENT(S)

 

 

OUTPUT PROBLEMS

Major physical or electrical damage

None

is evident.

Contact your local Authorized Field

 

Service Facility.

 

 

 

No wire feed, weld output or gas

1.

Make sure correct voltage is

flow when gun trigger is pulled. Fan

 

applied to the machine (115vac).

does NOT operate.

2.

Make certain that power switch

 

 

 

is in the ON position.

 

3.

Make sure circuit breaker is

 

 

reset.

 

 

 

No wire feed, weld output or gas

1.

The thermostat may be tripped

flow when gun trigger is pulled. Fan

 

due to overheating. Let machine

operates normally.

 

cool. Weld at lower duty cycle.

 

2.

Check for obstructions in air

 

 

flow. Check Gun Trigger connec-

 

 

tions. See Installation section.

RECOMMENDED COURSE OF ACTION

Contact your local Lincoln Authorized Field Service Facility.

3. Gun trigger may be faulty.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your

LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.

PRO 100

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Contents PRO Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcPlease Examine Carton and Equipment For Damage Immediately On-Line Product RegistrationTable of Contents Installation Technical Specifications PROSafety Precautions Read entire installation section before startingInstallation Identify and Locate ComponentsWork Clamp Installation Select Suitable LocationOutput Connections StackingGUN Installation Work Cable InstallationConnecting Gun Cable to the PRO GAS Connection OptionalFigure A.5 Input Connections Requirements For Rated OutputCode Requirements for Input Connections Requirements For CSA Rated OutputObserve all safety information throughout this manual 1OPERATIONB-1Fumes and Gases can be dangerous Welding Sparks can cause fire or explosionOperation Welding Operations Wire LoadingSequence of Operation Friction Brake Adjustments Wire ThreadingProcess Guidelines Cleaning Tip And NozzleMaking a Weld Welding with Gmaw MIG Changing Machine Over to Feed Other Wire SizesOverload Protection Application Chart Accessories Optional Accessories025 .035 0.6 0.9 mm wire PRO MIG ConversionMaintenance Safety Precautions MaintenanceRoutine Maintenance GUN and Cable Maintenance Configuration of Components in Wire Feeding SystemFor Magnum 100L GUN Contact Tip Cable Liner Drive RollChanging the Contact TIP Component Replacement ProceduresChanging Drive Roll Changing Liner Liner trim lengthGUN Handle Parts Figure D.31TROUBLESHOOTINGE-1 HOW to USE Troubleshooting GuideTroubleshooting Troubleshooting GuideProblems Possible Areas Symptoms Misadjustments Recommended Course of ActionFeeding Problems Welding Problems Diagrams Wiring DiagramPRO Precaucion Warnung