TROUBLESHOOTING | ||
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| Observe all Safety Guidelines detailed throughout this manual |
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PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Motor does not turn when trigger is | 1. | The wire drive motor may be |
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pulled. |
| overloaded. "Hxx" will be dis- |
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| played on the WFS display, |
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| where "xx" is the number of sec- |
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| onds until the wire drive attempts |
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| to run again. |
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| 2. A jumper plug or |
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| Remote Switch Interface Module |
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| must be properly installed into |
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| connector J5. |
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| 3. | Damaged wiring in the trigger cir- |
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| cuit. |
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| 4. | Control p.c. board failure. |
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The drive motor does not turn | 1. Damaged leads to the drive |
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although arc voltage is present and |
| motor. |
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the gas solenoid is on. | 2. | Damaged wire drive motor. |
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| 3. | Damaged control p.c. board. |
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| If all recommended possible areas |
No control of wire feed speed. | 1. | Damaged leads to the motor | |
Motor turns. Gas solenoid operates |
| tachometer. | of misadjustment have been |
properly and arc voltage is present. | 2. | Damaged tachometer. | checked and the problem persists, |
Wire feed speed can be set on the | 3. | Damaged control p.c. board | Contact your local Lincoln |
display, but has no control of the |
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| Authorized Field Service Facility. |
wire feed speed. |
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Wire feed motor turns and gas sole- | 1. | Power source is unable to pro- |
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noid operates, but no arc voltage is |
| vide arc voltage because of ther- |
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present. |
| mal shutdown or other failure. |
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Speed does not change when weld | 1. |
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current flows. |
| to the same value. |
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| 2. | Current sensing reed switch is |
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| not operating properly. |
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Cold feed forward or cold feed | 1. | The connector from the control |
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reverse buttons on keypad do not |
| p.c. board to the display p.c. |
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work, but motor control otherwise |
| board or the connector from the |
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functions properly |
| display p.c. board to the keypad |
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| are loose or improperly inserted. |
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| 2. Damaged keypad |
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| 3. | Damaged display p.c. board. |
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| 4. | Damaged control p.c. board. |
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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 your
