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TROUBLESHOOTING AND REPAIR |
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Observe Safety Guidelines detailed in the beginning of this manual. |
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PROBLEMS |
| POSSIBLE AREAS OF |
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(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION | |||
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| OUTPUT PROBLEMS |
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Major Physical or Electrical |
| 1. Contact The Lincoln Electric | ||||
Damage is Evident. |
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| Service Dept. | |||
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No weld output and no auxiliary | 1. Check the brushes for wear and | 1. Check for the presence of 12 | ||||
power. Engine runs normally. | proper contact to the rotor slip | VDC (at the pc board) from lead | ||||
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| rings. | #224 to frame ground. | This is | ||
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| the supply voltage to the board | |||
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| and is present when the engine | |||
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| is running and the S3 switch is | |||
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| in the “HIGH” or “AUTO” posi- | |||
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| tion. If the 12VDC is missing | |||
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| check the leads, switches and | |||
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| connections associated with the | |||
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| lead #224. See the Wiring | |||
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| Diagram. |
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| 2. Perform the Rotor Voltage | |||
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| Test. |
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| 3. If Rotor Voltage Test is normal, | |||
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| then | preform | the | Rotor |
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| Resistance Test. |
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| 4. If the Rotor Voltage Test is NOT | |||
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| normal, perform | the Auxiliary | ||
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| and | Field Winding | Voltage | |
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| Test. The Printed Circuit Board | |||
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| may be faulty. 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