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TROUBLESHOOTING & REPAIR | ||
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Observe Safety Guidelines detailed in the beginning of this manual.
PROBLEMS |
| POSSIBLE AREAS OF |
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(SYMPTOMS) |
| MISADJUSTMENT(S) |
| COURSE OF ACTION |
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| OUTPUT PROBLEMS |
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Inconsistent wire feeding or wire not | 1. | The gun cable is kinked. | 1. | Keep the gun as straight as | ||||
feeding but the drive rolls are turn- | 2. | The wire is jammed in the gun |
| possible. | Avoid sharp corners | |||
ing. |
| or bends in the gun cable. | ||||||
| cable. |
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| 3. | The gun liner is dirty or worn. | 2. Remove the gun and clear the | |||||
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| 4. | The electrode is rusty or dirty. | 3. Clear liner with pressurized air | |||||
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| 5. | The gun tip is worn or has splat- |
| (40 PSI) or less. Change liner if | ||||
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| worn. |
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| 6. | Improper gun liner, tip, drive | 4. | Use only clean electrode. | Use | |||
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| rolls, or wire guides. |
| only quality electrode, like | ||||
| 7. | Incorrect pressure on the wire |
| or | from | the Lincoln | ||
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| Electric. |
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| drive rolls. |
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| 8. | Spindle brake to tight. | 5. Replace the contact tip. |
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| 9. | Worn drive rolls. | 6. Verify the proper parts are | |||||
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| 7. Adjust the tension arm per the | |||||
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| manual. Most electrodes feed | ||||
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| well with the tension at around | ||||
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| “3”. |
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| 8. Verify the | spool | moves | with | ||
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| minimal effort. |
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| 9. Replace the drive rolls if need- | |||||
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Wire feed speed consistently oper- | 1. | The jumper lead for normal | 1. | Properly connect the jumper. | ||||
ates at the wrong value. The speed |
| speed / extra torque is connect- | 2. Install the proper pinion fear in | |||||
changes when the control knob is |
| ed improperly. | ||||||
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| the wire drive unit. |
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adjusted. |
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2. | The wrong gear is installed in |
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| 3. | Replace | the | motor/gearbox | ||||
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| the wire drive unit. | ||||||
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| assembly. |
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| 3. | The motor brushes are worn. |
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This wire feeds but cannot be con- | 1. | The tachometer is connected | 1. | Verify that tachometer | leads | |||
trolled with the wire speed pot. |
| improperly. |
| are properly connected. |
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| 2. | The tachometer has failed. | 2. | Perform | the | MOTOR | AND | |
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| TACHOMETER TEST. Replace | ||||
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| the tachometer if necessary. | ||||
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| 3. | Possible control board problem. | ||||
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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
