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TROUBLESHOOTING AND REPAIR |
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Troubleshooting Guide – See Wiring Diagrams for location of specified | Observe Safety Guidelines | |||||
components. See Wiring Diagrams for troubleshooting of specific circuits. | detailed in the beginning of this manual. | |||||
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PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
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(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
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| WIRE FEEDING AND WELDING PROBLEMS |
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Wire feeding rough or not feeding, | 1. | Check for kinked or twisted gun | 1. Check for correct size and | |||
but drive rolls turning. |
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| cable. | installation of drive rolls and | ||
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| guide tubes. Refer to the | ||
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| 2. | Check for jammed wire in gun | Operation Section - Drive Roll | ||
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| or cable. | Installation for correct drive roll | ||
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| and guide tube installation. |
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| 3. | Check for worn nozzle or |
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| flashed or melted contact tip. | 2. Check idle roll pressure, brake | ||
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| tension, and | drive | roll |
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| cleanliness. Set | drive | roll |
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| tension per Operation Section - | ||
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| Idle Roll Pressure Setting. |
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Variable or “hunting” arc. | 1. | Check for worn or melted | Possible problem with the weld | |||
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| contact tip. | procedure. Contact Lincoln Electric | ||
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| at | ||
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| 2. | Inspect for worn work cable, | 9353. |
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| poor work connection, or loose |
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| electrodes. |
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| 3. | Is electrode polarity correct? |
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| 4. | Check for rusty electrode wire. |
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| 5. | Check power source for proper |
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| operation. |
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Weld bead is narrow or ropey. May | 1. | Make sure the weld procedure | The welding power source may be | |||
have porosity with | electrode |
| and electrode polarity is correct | faulty. Check or replace. |
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stubbing into plate. |
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| for the process being used. |
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| 2. | Make sure shielding gas is |
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| correct and flow is proper. |
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| 3. | Make sure the weld joint is not |
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| “contaminated”. |
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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
