Lincoln Electric IM790 manual Welding Problems

Page 32

E-4

 

TROUBLESHOOTING

 

 

 

E-4

 

 

 

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PROBLEMS

 

POSSIBLE

RECOMMENDED

 

 

(SYMPTOMS)

 

 

 

CAUSE

 

 

COURSE OF ACTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WELDING PROBLEMS

 

 

 

 

 

 

 

Arc is unstable – Poor starting

 

 

 

1. Check for correct input voltage

 

 

 

 

 

 

 

 

 

 

 

 

 

to machine – 208 or 230 VAC.

 

 

 

 

 

 

 

 

 

 

 

 

2.

Check for proper electrode

 

 

 

 

 

 

 

 

 

 

 

 

 

polarity for process.

 

 

 

 

 

 

 

 

 

 

 

 

3.

Check gun tip for wear or dam-

 

 

Contact your local Lincoln

 

 

 

 

 

 

 

 

 

age – Replace.

 

 

Authorized Field Service Facility.

 

 

 

 

 

 

 

 

4.

Check for proper gas and flow

 

 

 

 

 

 

 

 

 

 

 

 

 

rate for process.

 

 

 

 

 

 

 

 

 

 

 

 

5.

Check work cable for loose or

 

 

 

 

 

 

 

 

 

 

 

 

 

faulty connections.

 

 

 

 

 

 

 

 

 

 

 

 

6.

Check gun for damage or

 

 

 

 

 

 

 

 

 

 

 

 

 

breaks.

 

 

 

 

 

 

 

 

 

 

 

 

7.

Check wire feed to assure

 

 

 

 

 

 

 

 

 

 

 

 

 

smooth wire feeding (check

 

 

 

 

 

 

 

 

 

 

 

 

 

brake adjustment).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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.

SP-175 PLUS

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Contents SP-175 Plus 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 Electric Shock can kill Safety PrecautionsIdentify and Locate Components Work Clamp Installation Work Cable InstallationSelect Suitable Location StackingGAS Connection GUN InstallationConnecting Gun Cable to the SP-175 Plus Gas Solenoid Inlet Fitting Power Input Cable Input ConnectionsVolt Input Connection Line Cord ConnectionElectrical Input Connection for Rated Output Observe all safety information throughout this manual OperationFumes and Gases can be dangerous Welding Sparks can cause fire or explosionControls and Settings Design Features AdvantagesGeneral Description Welding CapabilitySequence of Operation Wire LoadingWelding Operations Friction Brake Adjustments Wire ThreadingShielding Gas Making a WeldProcess Guidelines Changing Machine Over to Feed Other Wire SizesCleaning Tip And Nozzle Wire Feed Overload Protection Overload ProtectionOutput Overload Thermal ProtectionApplication Chart K586-1 Deluxe Adjustable Gas Regulator & Hose Kit AccessoriesOptional Accessories Replacement Parts Innershield Fcaw ConversionMaintenance Maintenance Safety PrecautionsItems Requiring no Maintenance Routine and Periodic MAINTE- NanceGUN and Cable Maintenance Configuration of Components in Wire Feeding SystemFor Magnum 100L GUN Contact Tip Cable Liner Drive RollRoll onto the drive shaft SP-175 Plus Changing the Contact TIPChanging Drive Roll Changing Liner Liner trim lengthGUN Handle Parts Figure D.3 SP-175 PlusTroubleshooting HOW to USE Troubleshooting GuideProblems Possible Symptoms Cause Recommended Course of ActionGAS Flow Problems Welding Problems Wiring Diagrams Page Precaucion Warnung
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