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TROUBLESHOOTING & REPAIR | ||
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Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
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| SPOOL GUN PROBLEMS |
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No wire feed occurs when Spool | 1. | Machine is switched off or | 1. Switch on or plug in machine. |
Gun trigger is pulled. |
| unplugged. | 2. Install full spool of specified |
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| 2. | Spool gun is out of wire | wire. |
| 3. | Contact tip burnback. | 3. Replace contact tip. |
| 4. | Fully or partially blocked gun | 4. Replace and clean or replace |
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| tube liner. | gun tube liner. ( See |
| 5. | Bird nest. | Maintenance Section) |
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| 6. | Machine’s toggle selector | 5. Cut out birds nest, reload |
| wire, and check for proper | ||
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| switch is not set to spool gun | |
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| wire alignment and wire’s | |
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| mode. | |
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| mechanical resistance. | |
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| 7. | Defective trigger. (contacts | 6. Flip switch to proper |
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| open) | |
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| operating position. | |
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| 8. | Defective trigger circuit in gun. | 7. Replace trigger. ( See |
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| 9. | Damaged spool gun motor. | Maintenance Section). |
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| 10. No motor voltage or current | 8. Disconnect gun from machine | |
| and check trigger for | ||
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| from machine. | |
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| continuity. | |
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| 11. Contact tip size too small for | 9. Contact LASF for possible | |
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| wire diameter used. | |
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| motor replacement. | |
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| 10. See Troubleshooting section |
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| in welding machine’s |
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| instruction manual. |
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| 11. Replace contact tip with one |
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| that is the right size. |
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Sluggish wire feed when the | 1. | Drive roll is worn or galled with | 1. Clean drive roll of all |
Spool Gun trigger is pulled. |
| aluminum. | aluminum or replace drive |
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| roll. |
| 2. | Machine’s wire feed speed | 2. Increase wire feed speed. |
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| setting is too low. | |
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| 3. | Wire is obstructed somewhere | 3. Check for obstructions: |
| remove any wire shavings; | ||
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| along the wire feed path in the | |
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| remove kinked wire; remove | |
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| gun. | |
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| and clean or replace gun tube | |
| 4. | Low motor voltage. | liner ( See Maintenance |
| Section). | ||
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| 4. See Troubleshooting section |
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| in welding machine’s |
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| instruction manual. |
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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
