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| TROUBLESHOOTING & REPAIR | |
| TROUBLESHOOTING GUIDE | Observe Safety Guidelines |
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| detailed in the beginning of this manual. |
PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED | |
(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | |
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| OUTPUT PROBLEMS |
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Low weld output and low auxiliary | 1. The generator brushes may be | 1. | Perform the Rotor Voltage |
output. | worn. See the Maintenance |
| Test. |
| section of this manual or con- | 2. | If the rotor voltage is low, the |
| tact your local Lincoln Electric | ||
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| field capacitor (C1) or the field | |
| Authorized Field Service |
| |
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| rectifier bridge (D1) may be | |
| Facility. |
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| faulty. Test or replace. | |
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| 2. The engine RPM may be low. | 3. | Check the rheostat (R1). |
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| Normal resistance is 3.3 ohms. |
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| See Wiring Diagram. |
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| 4. | The rotor may be faulty. |
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| Perform the Rotor Resistance |
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| Test. |
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| 5. | The engine RPM may be low. |
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| Perform the Engine Throttle |
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| Adjustment Test. |
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| 6. | If the engine idle RPM is okay, |
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| the engine may have lost |
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| horsepower and be in need of |
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| major repair. |
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CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call
WELDANPOWER 125
