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| TROUBLESHOOTING |
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| Observe all Safety Guidelines detailed throughout this manual |
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| PROBLEMS |
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| POSSIBLE |
| RECOMMENDED |
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| (SYMPTOMS) |
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| CAUSE |
| COURSE OF ACTION |
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| PROBLEMS IN |
| TIG WELDING |
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| Oxidation |
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| 1. lnsufficient gas. |
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| 2. | No protection on the back side. |
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| Tungsten inclusions |
| 1. lncorrect electrode sharpening. |
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| 2. | Electrode too small. |
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| 3. | Operating failure (contact of the |
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| tip with the workpiece). |
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| Porosity |
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| 1. Dirt on the edges. |
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| 2. | Dirt on the filler material. |
| If all recommended possible areas of | ||
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| 3. | Excessive travel speed. |
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| 4. | Current intensity too low. |
| misadjustment have been checked | ||
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| 5. | Insuffient gas flow rate |
| and the problem persists, Contact | ||
| Hot cracking |
| 1 Unsuitable filler material. |
| your local Lincoln Authorized |
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| 2. | High heat supply. |
| Field Service Facility. |
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| 3. | Dirty materials. |
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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.