TROUBLESHOOTING | ||
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| Observe Safety Guidelines detailed in the beginning of this manual. |
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| PROBLEMS |
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| POSSIBLE |
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| (SYMPTOMS) |
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| CAUSE |
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| OUTPUT PROBLEMS |
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| No output. Main fuses open, indicat- |
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| 1. | With input power removed |
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| ing excessive current draw. |
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| inspect input leads for possible |
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| shorts or grounds or misconnec- |
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| tions. |
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| 2. | Install new fuses and reapply |
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| power. If fuses open again con- |
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| tact your local Lincoln Authorized |
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| Field Service Facility. |
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| Machine loses output when gun trig- |
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| 1. | The over current sensor is being |
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| ger is pulled or arc is struck. |
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| activated indicating that too much |
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| Machine output returns after a few |
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| output current is being drawn |
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| seconds and trigger is pulled again. |
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| from the machine. Reduce weld- |
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| The Thermal indicator light is lit. |
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| ing current demands or remove |
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| “fault” in welding cables. |
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| 2. | Make sure that the gun tip is not |
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| “shorted” to the work surface and |
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| that the proper welding proce- |
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| dures are being used. |
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| Machine is dead - no output |
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| 1. | Power switch must be in the |
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| fans - no display. |
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| “ON” position. |
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| 2. | Check the input voltage. Make |
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| sure all three phases are applied |
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| to the machine. |
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| 3. | With input power removed check |
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| that the input voltage |
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| switch and jumper “A” ( the |
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| reconnect auxiliary jumper) are in |
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| the proper position for input volt- |
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| age being used. See Reconnect |
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| Procedure in the Installation |
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| Section. |
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| 4. | With input power removed check |
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| continuity of 3 amp slow blow |
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| fuse located on reconnect panel. |
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RECOMMENDED COURSE OF ACTION
If all recommended possible areas of misadjustment have been checked and the problem persists,
Contact your local Lincoln Authorized Field Service Facility.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
INVERTEC STT II (CE)
