Lincoln Electric IM794 manual Problems Possible Symptoms Cause, Recommended Course of Action

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E-2

TROUBLESHOOTING

E-2

 

Observe Safety Guidelines detailed in the beginning of this manual.

 

 

 

 

 

 

 

 

 

PROBLEMS

 

 

POSSIBLE

 

 

(SYMPTOMS)

 

 

CAUSE

 

 

 

 

 

 

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. See

 

 

does NOT operate.

 

 

 

Installation section, “Electrical

 

 

 

 

 

 

Connections”.

 

 

 

 

 

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.

 

 

 

 

 

3.

Check Gun Trigger connections.

 

 

 

 

 

 

See Installation section.

 

 

 

 

 

4.

Gun trigger may be faulty.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RECOMMENDED COURSE OF ACTION

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

SP-170T

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Contents SP-170T California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéOn-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Technical Specifications SP-170T InstallationIdentify and Locate Components Safety PrecautionsSelect Suitable Location Work Clamp InstallationOutput Connections StackingWork Cable Installation GUN InstallationConnecting Gun Cable to the SP-170T GAS ConnectionFigure A.5 Input ConnectionsVolt Input Connection Line Cord ConnectionElectrical Input Connection for Rated Output Design Features Advantages Saftey PrecautionsOperation General DescriptionLimitations Controls and SettingsWelding Capability Sequence of Operation Wire LoadingWelding Operations Wire Threading Friction Brake AdjustmentsMaking a Weld Cleaning Tip And NozzleProcess Guidelines Overload Protection Changing Machine Over to Feed Other Wire SizesWelding with Gmaw MIG Application Chart Optional Accessories AccessoriesK586-1 Deluxe Adjustable Gas Regulator & Hose Kit K549-1 .035 0.9 mm Innershield Welding KitInnershield Fcaw Conversion Replacement PartsFactory installed gun liner will feed .025-.035 0.6-0.9mm Routine Maintenance MaintenanceMaintenance Safety Precautions Configuration of Components in Wire Feeding System GUN and Cable MaintenanceFor Magnum 100L GUN Contact Tip Cable Liner Drive RollChanging Drive Roll Component Replacement ProceduresChanging the Contact TIP Liner trim length Changing LinerFigure D.3 GUN Handle PartsHOW to USE Troubleshooting Guide TroubleshootingRecommended Course of Action Problems Possible Symptoms CauseFeeding Problems Welding Problems Wiring Diagrams SP-170T Precaucion Warnung