Lincoln Electric IM871-A manual Symptoms, Problems, Possible, Recommended, Cause, Course Of Action

Models: IM871-A

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PROBLEMS

E-2

TROUBLESHOOTING

E-2

Observe all Safety Guidelines detailed throughout this manual

 

 

 

 

PROBLEMS

POSSIBLE

RECOMMENDED

 

(SYMPTOMS)

CAUSE

COURSE OF ACTION

 

PROBLEMS

No generator power or welding output. 1. Disconnect anything plugged into

 

auxiliary receptacles and weld loads.

2.

Open lead in flashing or field circuit.

3.

Open flashing diode (D1)

4.

Faulty brushes.

5.

Faulty rheostat (R1).

6.

Faulty field rectifier (D1).

7.

Faulty capacitor (C1).

8.

Faulty stator field winding.

9.

Faulty rotor.

10. Dirty slip rings, clean slip rings when

 

not in use.

Generator power is available but unit 1.

Loose connection to output stud.

will not weld.

 

2.

Work not connected.

3.

Electrode holder loose.

4.

No open circuit voltage at output

 

studs. Open lead in weld circuit.

If all recommended possible areas of misadjustment have been checked and the problem persists,

Contact your local Lincoln Authorized Field Service Facility.

5. Faulty reactor (L1).

POSSIBLECAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

POWER-ARC 5500

Page 39
Image 39
Lincoln Electric IM871-A manual Symptoms, Problems, Possible, Recommended, Cause, Course Of Action, Troubleshooting