TROUBLESHOOTING AND REPAIR | ||
|
Observe Safety Guidelines detailed in the beginning of this manual.
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PROBLEMS | POSSIBLE AREAS OF |
(SYMPTOMS) | MISADJUSTMENT(S) |
| OUTPUT PROBLEMS |
No weld output and no auxiliary out- 1. The generator brushes may be
put - engine runs normally.worn or faulty. See the Main - tenance Section of this manual or contact your local Lincoln
Electric Authorized Field Ser - vice Facility.
RECOMMENDED
COURSE OF ACTION
1.Perform the Rotor Voltage Test.
2.If the rotor voltage is zero to 3 VDC, check the flywheel alter- nator and associated wires 200A, 202, and 202A for conti- nuity. The voltage from lead 200A to ground should be at least 18 to 21 VDC at (3700 RPM). Normal voltage is 37.5- 42.5VDC. If the voltage is low or missing, the flywheel alterna- tor may be faulty. See the Wiring Diagram. Check diode D3 & lead #202C
3.Check lead 201B (green) for continuity (zero ohms) to ground. See wiring diagram.
4.The field capacitor (C1) or bridge (D2) may be faulty. Test or replace.
5.Test the rheostat (R1). Normal resistance is 3.3 ohms. See the
Rheostat Removal and Replacement Procedure.
6.The rotor may be faulty. Per- form the Rotor Resistance Test.
7.Perform Flashing Circuit Test.
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call