| TROUBLESHOOTING | |||
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| Observe all Safety Guidelines detailed throughout this manual | ||
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| PROBLEMS | POSSIBLE CAUSE | RECOMMENDED |
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| (SYMPTOMS) | COURSE OF ACTION | |
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4. | Tip seizes in diffuser. | a. Tip overheating due to prolonged |
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| or excessive high current and/or |
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| duty cycle welding. |
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| Note: A light application of high |
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| temperature antiseize lubri- |
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| cant (such as Lincoln E2067 |
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| Graphite Grease) may be |
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| applied to tip of threads. |
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5. | Unit shuts off while welding or | a. Wire feed shut down circuit |
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| attempting to weld, status light is | maybe electrically open. (Leads |
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| red/green alternating between | 570 and 572 in wire feed head. |
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| colors every second. Unit tries to | b. The wire drive motor may be |
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| recover after 30 seconds and |
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| may repeat again. | overloaded. Check for mechani- |
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| cal restrictions in the wire feeding | If all recommended possible areas of |
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| path. | misadjustment have been checked |
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| and the problem persists, Contact |
6. | Drive roll does not turn although | a. Check for loose or broken leads | your local Lincoln Authorized | |
Field Service Facility. | ||||
arc voltage is present, and solenoid | at the wire drive motor. |
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is on. Feed head and Control Box | b. Defective wire feed motor or feed |
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status LEDs are both solid green. |
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| head PC board. Note: With WFS |
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| set to max control board should |
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| supply 24 VDC to motor (leads |
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| #550, #551). |
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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.
