Lincoln Electric IM927 manual Troubleshooting

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E-2

TROUBLESHOOTING

E-2

 

 

 

 

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

(SYMPTOMS)

POSSIBLE

CAUSE

RECOMMENDED

COURSE OF ACTION

No welder or output power.

1.

Open in miscellaneous leads.

 

2.

Open lead in flashing or field

 

 

circuit.

 

3.

Faulty rotor.

 

4.

Faulty Potentiometer (R1).

 

5.

Faulty stator Field winding.

 

6.

Faulty Field rectifier (D2).

 

7.

Faulty P.C. Board.

 

 

 

Engine will not idle down to low

1.

Idler switch on High Idle.

speed.

 

 

 

2.

Insufficient voltage present

 

 

between terminals #213 and

 

 

#5E. (Voltage should be 12V

 

 

DC).

 

3.

External load on welder or

 

 

auxiliary power.

 

4.

Faulty wiring in solenoid circuit.

 

5.

Faulty idler solenoid.

 

6.

Faulty P.C. Board.

 

 

 

Engine will not go to high idle when

1.

Poor work lead connection to

attempting to weld.

 

work.

 

2.

No voltage signal from the

 

 

current sensor.

 

3.

No open circuit voltage on

 

 

output studs.

If all recommended possible areas of misadjustment have been checked and the problem persists, Contact your local Authorized Field Service Facility.

4.Faulty P.C. Board.

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 Field Service Facility for technical troubleshooting assistance before you proceed.

WELDMARK 225

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Contents Safety Depends on You WeldmarkSafety WeldmarkElectric Shock can kill Welding and Cutting Sparks can Cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcA n k Table of Contents Installation Auxiliary PowerHeight Width Depth Weight Welding OutputSafety Precautions Machine GroundingSpark Arrester TowingPRE-OPERATION Service Battery ConnectionsGasoline Fuel only Vehicle MountingWelding Output Cables Total Combined Length of Electrode and Work CablesAngle of Operation LiftingConnection of Lincoln Electric Wire Feeders Additional Safety PrecautionsInstructions Location / VentilationAuxiliary Power Welder OperationElectrical Device USE with the Weldmark Type Common Electrical Devices Possible ConcernsAuxiliary Power While Welding Simultaneous Welding and PowerStandby Power Connections WELDMARK225Connection of Weldmark 225 to Premises Wiring Engine Switch OperationGENERAL DESCRIPTION Welder Controls Function and OperationPolarity Switch Weldmark 225 Approximate Fuel ConsumptionSTARTING/SHUTDOWN Instructions BREAK-IN PeriodStarting the Engine Stopping the EngineWire Feed Welding Processes Constant Voltage Welding ProcessStick Constant Current Welding TIG Constant Current WeldingStick Auto Accessories Optional Equipment Field Installed2ACCESSORIESC-2 WIRE FEEDRECOMMENDED EQUIPMENT StickMaintenance Safety PrecautionsRoutine Maintenance Engine OIL ChangeAIR Cleaner and Other Maintenance OIL Filter ChangeEngine Adjustments Overspeed is Hazardous BatteryEngine Maintenance Parts Slip RingsTroubleshooting HOW to USE Troubleshooting GuideTroubleshooting Troubleshooting Wiring Diagrams Diagrams Warni NGDimension Print Weldmark 225 KohlerPrecaucion Warnung Weldmark