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TROUBLESHOOTING & REPAIR |
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TROUBLESHOOTING GUIDE - Observe all Safety Guidelines detailed throughout this manual | ||||||||||
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| PROBLEMS |
| POSSIBLE AREAS OF |
| RECOMMENDED |
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| (SYMPTOMS) |
| MISADJUSTMENTS(S) |
| COURSE OF ACTION | |||||
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| OUTPUT PROBLEMS |
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Major Physical or Electrical Damage | 1. | Contact | your | local Lincoln | 1. | Contact The | Lincoln | Electric | ||
is Evident |
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| Electric Authorized Field Service |
| Service Dept. (216) | |||||
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| Facility. |
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Machine is dead - No Open Circuit | 1. | Make certain that the input | 1. | Check input power switch (S1). | ||||||
Voltage output and No Wire Feed |
| power switch is in the "ON" posi- |
| It may be faulty. |
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when gun | trigger is pulled. No |
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Display. |
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| 2. | Check for loose or broken wires | |||
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| 2. | Check the input voltage at the |
| at the reconnect panel. |
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| machine. | Input | voltage must |
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| match the rating plate and the | 3. | Perform Main Transformer Test. | |||||
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| reconnect panel. |
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| 3. | Blown or missing fuses in the |
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| input line. |
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No Open Circuit Voltage output but | 1. | Check the input voltage at the | 1. | Check for loose or broken con- | ||||||
wire feeds normally when gun trigger |
| machine. | Input | voltage must |
| nections at the output terminals, | ||||
is pulled. - | Display lights properly. |
| match the rating plate and the |
| the choke, the capacitor bank | |||||
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| reconnect panel - High or Low |
| and all heavy current carrying | |||||
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| Line message may be displayed. |
| leads. |
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| 2. | The gun may be faulty. Check or | 2. | Make sure that the transformer | |||||
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| replace. |
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| secondary | leads are | securely | |
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| connected to the SCR Rectifier | |||
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| Assembly. |
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| 3. | Perform | the | SCR | Rectifier |
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| Assembly Test. |
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| 4. | The Control 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, con- tact the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed call 216-
