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TROUBLESHOOTING & REPAIR | ||||
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Observe Safety Guidelines 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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| SPOOL GUN PROBLEMS |
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Intermittent wire feed when the | 1. Wire is mechanically binding | 1. Check that wire is properly |
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Spool Gun trigger is pulled. | along its feed path inside gun. | aligned inside gun. |
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| 2. Drive roll has become loose on | 2. Check that drive roll is |
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| hub and output shaft. | securely fastened in place by | |
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| 3. Drive roll has become galled | SHCS (socket head cap |
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| screw); replace hub and twist- | ||
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| with aluminum. | ||
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| lock if worn. |
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| 4. Wire has become kinked along | 3. Remove and then clean or |
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| its feed path. |
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| replace drive roll. (See |
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| 5. Liner assembly is shaving | Maintenance Section). |
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| wire. | 4. Manually pull wire slowly thru | |
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| gun until unkinked wire |
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| emerges. |
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| 5. Check that wire is properly |
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| aligned at liner inlet; realign |
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| gun tube with wire drive. (See | |
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| Correcting Wire Shaving |
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| Issues Maintenance Section) | |
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Frequent occurrences of contact | 1. Improper welding parameters | 1. See Operation Section for |
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tip burnback when using the | or technique. ( Example: | proper Welding information. |
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Spool Gun. |
| CTWD (Contact Tip to Work | 2. See symptoms on intermittent | |
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| Distance) is incorrect. | ||
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| or sluggish wire feed. |
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| 2. Wire may be feeding |
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| intermittently. |
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Poor weld bead appearance | 1. No gas flow. | 1. See symptom “Low or no gas | ||
(porosity or dull grey oxidized | 2. Low gas flow. | flow” |
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surface) When using the Spool | 2. See symptom “Low or no gas | |||
Gun. |
| 3. Improper or contaminated | ||
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| flow” |
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| shielding gas. |
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| 4. Welding in a windy | 3. Check that the gas supply’s |
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| labeling reads 100% argon. |
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| environment. |
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| Temporarily use alternate, |
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| 5. Improper electrode polarity. | known gas supply and check | |
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| for appearance improvement. | ||
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| 6. Improper welding parameters | 4. Erect a wind shield or move to | |
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| or technique. | ||
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| a |
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| welding. |
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| 5. Reconnect machine’s welding | |
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| output to electrode positive |
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| polarity. |
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| 6. See Operation Section for |
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| information. |
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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
