TROUbLESHOOTING | ||
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| Observe all Safety Guidelines detailed throughout this manual |
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PRObLEMS
(SYMPTOMS)
POSSIbLE
CAUSE
RECOMMENDED
COURSE OF ACTION
No wire feed occurs when trigger is | 1. Machine is switched off or | 1. Switch on or plug in machine. | ||
pulled. |
| unplugged. |
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| 2. | Out of wire | 2. | Install full spool of specified wire. |
| 3. Contact tip burnback. | 3. Replace contact tip. | ||
| 4. Fully or partially blocked gun | 4. Remove and clean or replace gun | ||
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| liner. |
| liner . |
| 5. | Bird nest | 5. | Cut out bird nest, reload wire, and |
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| check for proper wire alignment. |
| 6. | Defective trigger (contacts open | 6. | Replace trigger assembly. |
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| or dirty). |
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| 7. | Defective trigger circuit in gun. | 7. | Disconnect gun from machine |
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| and check trigger circuit for conti- |
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| nuity. |
| 8. | No motor voltage or current from |
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| machine. | 8. | See Troubleshooting section in |
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| welding machine’s or wire feed- |
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| er’s instruction manual. |
| 9. Contact tip size too small for wire | 9. | Replace contact tip with one that | |
| diameter used. |
| is the correct size. | |
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Sluggish wire feed when trigger is | 1. Drive roll is worn or galled. | 1. | Clean drive roll or replace drive | |
pulled. |
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| roll. | |
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2.Machine’s wire feed speed set- 2. Increase wire feed speed. ting is too low.
3.Wire is obstructed somewhere 3. Check for obstructions: Remove
along the wire feed path in the | any wire shavings; remove kinked | |
gun. | ||
wire; remove and clean or | ||
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4. Low motor voltage. | replace gun liner. | |
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| 4. See Troubleshooting section in | |
| welding machine’s instruction | |
| manual. | |
5. Gun cable is coiled/kinked. | 5. Remove all sharp curves from gun | |
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| cable while welding. | |
6. Mechanical resistance to wire 6. If using a reverse bend gun tube, | ||
feeding is too large | try welding with a non reverse | |
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| bend product. | |
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.