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TROUBLESHOOTING & REPAIR | |||||
TROUBLESHOOTING GUIDE |
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| Observe Safety Guidelines | ||
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| detailed in the beginning of this manual. | ||
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PROBLEMS |
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| POSSIBLE AREAS OF | RECOMMENDED |
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(SYMPTOMS) |
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| MISADJUSTMENT(S) | COURSE OF ACTION |
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| TIG WELDING PROBLEMS |
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High frequency "spark" is present at | 1. | The torch may be faulty. Check | 1. This may be a welding procedure | ||
tungsten electrode, but operator is |
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unable to establish a welding arc. |
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Machine has normal open circuit | 2. | The current control may be set | Contact The Lincoln Electric Service | ||
voltage. Refer to Technical |
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| too low. | Department |
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Specifications in the Installation |
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Chapter. |
| 3. | The tungsten electrode may be |
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| contaminated. Replace or sharp- |
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| 4. The electrode may be too large |
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| for the process. |
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| 5. | If a helium blend is being used |
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| as a shielding gas, then reduce |
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| the percentage of helium. |
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| 6. | Check the welding cables for |
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| loose or faulty connections. |
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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