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| TROUBLESHOOTING & REPAIR |
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| TROUBLESHOOTING GUIDE |
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| Observe Safety Guidelines | ||
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| detailed in the beginning of this manual. | ||
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| PROBLEMS | POSSIBLE AREAS OF |
| RECOMMENDED | ||||
| (SYMPTOMS) | MISADJUSTMENT(S) |
| COURSE OF ACTION | ||||
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| OUTPUT PROBLEMS |
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| Machine loses output while weld- | 1. | Check to make sure the fan is | 1. The IGBT heat sink thermostat | ||||
| ing. | The thermal indicator light is |
| running and operating correctly. | or fan thermostat may be defec- | |||
| lit. | Normal welding output returns | 2. | Welding | application | may | tive. Check or replace. | |
| after about 10 minutes. |
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| exceed | recommended | duty |
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3.Dirt and dust may have clogged the cooling channels. Blow out the unit with clean, dry com- pressed air.
4.Air intake and exhaust louvers may be blocked due to inade- quate clearance around the machine.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, con- tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed.
Call
