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| TROUBLESHOOTING |
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| Observe all Safety Guidelines detailed throughout 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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| Machine often “noodle welds” (out- | 1.Secondary current limit has been |
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| put is limited to approximately 100 |
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| exceeded, and the machine has |
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| amps) when running a particular |
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| phased back to protect itself. |
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| procedure, especially a procedure |
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| 2. Adjust procedure or reduce load |
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| with high WFS. |
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| to lower current draw from the |
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| machine. |
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| 3. A single phase input (loss of L2) |
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| will reduce the secondary current |
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| limit from 570 Amps to 325 |
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| Amps. |
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| Machine won’t produce full output. |
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| 1. Input voltage may be too low, |
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| limiting output capability of the |
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| power source. Make certain that |
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| the input voltage is proper, |
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| according to the Rating Plate |
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| located on the rear of the |
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| machine. |
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| 2. Input may be “single phased”. |
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| If all recommended possible areas |
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| Make certain the input voltage is |
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| of misadjustments have been |
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| proper on all three Input lines. |
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| checked and the problem persists, |
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| 3. STT machines only: May be |
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| contact your local Lincoln |
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| exceeding the 325 amp limit on |
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| Authorized Field Service Facility. |
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| the STT output terminal. |
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| 4. Secondary current or voltage not |
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| be properly calibrated. Check |
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| values displayed on the Power |
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| Feed 10/11 verses readings on |
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| an external meter. |
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| Auxiliary receptacle is “dead” no |
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| 1. Circuit breaker CB2 (on case |
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| auxiliary voltage . |
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| front) may have opened. Reset. |
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| 2. Circuit breaker CB4 (in recon- |
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| nect area) may have opened. |
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| Reset. |
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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 your local authorized Lincoln Electric Field Service Facility for technical assistance.
