TROUBLESHOOTING | ||
| Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Machine fails to hold the output | 1. | Rough or dirty commutator. |
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(heat) consistently. | 2. | Brushes may be worn down to |
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| Limit. |
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| 3. | Field circuit may have variable |
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| resistance connection or inter- |
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| mittent open circuit due to |
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| loose connection or broken |
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| wire. |
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| 4. | Electrode lead or work lead |
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| connection may be poor. |
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| 5. | Wrong grade of brushes may |
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| have been installed on gener- |
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| ator. |
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| 6. | Field rheostat may be making |
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| poor contact and overheating. |
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Welder starts but fails to generate | 1. | Generator or exciter brushes |
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current. |
| may be loose or missing. |
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| 2. | Exciter may not be operating. | If all recommended possible areas |
| 3. | Field circuit of generator or | |
| of misadjustment have been | ||
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| exciter may be open | checked and the problem persists, |
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| 4. | Exciter may have lost excita- | Contact your local Lincoln |
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| tion. | Authorized Field Service Facility. |
| 5. | Series field and armature cir- |
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| cuit may be |
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Welding arc is loud and spatters | 1. | Current setting may be too |
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excessively. |
| high. |
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| 2. Polarity may be wrong. |
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Welding current too great or too | 1. | Exciter output low causing low |
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small compared to indication on |
| output compared to dial indica- |
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the dial. |
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| 2. Operating speed too low or too |
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| high. |
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Arc continuously pops out. | 1. | “Current Range Selector” |
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| switch may be set at an inter- |
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| mediate position. |
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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 your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
