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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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| FEEDING PROBLEMS |
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The machine stops feeding wire | 1. Check for adequate wire | 1. Check the motor armature |
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with trigger pulled. | supply. | current. If high (over 2.5 |
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and machine starts feeding wire | 2. Check for mechanical | amps) and there are no |
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again. | restrictions in the wire feeding | ||||
restrictions in the wire feeding | |||||
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| path, then the motor or gear | |||
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| path. The gun may be clogged. | |||
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| box may be faulty. Replace. |
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| 3. Make sure the gun liner and | 2. If motor armature current is |
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| tip are correct for the wire size |
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| below 2.5 amps. The Control | |||
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| being used. | |||
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| P.C. board may be faulty. |
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| 4. Check spindle for ease of | Replace. |
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| rotation. |
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1. Wire drive speed stays on one | 1. Possible faulty drive motor. | 1. Remove main supply power to | |||
| speed. No wire speed control. | 2. Possible faulty Control board. | the machine. Disconnect plug | ||
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| J3 from the control board. |
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| Test the resistance from lead | ||
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| MOT- in the harness plug to |
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| the wire feed motor case. If |
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| resistance is below 500,000 |
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| ohms, replace the drive |
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| motor. |
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| 2. If no voltage charge is seen |
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| on MOT+ and MOT- when |
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| turning wire speed |
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| potentiometer, the Control |
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| P.C. Board may be faulty. |
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| Replace. |
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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
