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TROUBLESHOOTING & REPAIR | |||||
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Observe Safety Guidelines detailed in the beginning of this manual. |
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PROBLEMS |
| POSSIBLE AREAS OF | RECOMMENDED |
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(SYMPTOMS) |
| MISADJUSTMENT(S) | COURSE OF ACTION |
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| OUTPUT/FEEDING PROBLEMS |
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The machine has output, wire | 1. Possible faulty fan motor. | 1. Perform the Fan Motor Test. | |||
feed, gas flow but NO fan. | 2. Possible faulty Control P.C. | 2. Check for continuity between | |||
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| Board. | #6 to Fan or #1 to Fan on |
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| Control P.C. Board. Replace. | ||
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The machine has output, gas | 1. Possible bad drive motor. | 1. Perform the Wire Drive Test. | |||
flow and fan but does not have | 2. Possible bad Control P.C. | 2. If 3 - 30 vdc is not at the drive | |||
wire drive. |
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| Board. | motor check for OCV at the |
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| board on pins 1 and 10 on J3. | ||
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| If OCV is present possible |
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| faulty Control P.C Board. |
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| Replace. If OCV is not |
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| present check continuity of |
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| wires CAP- and CAP+. |
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No wire feed when gun trigger is | 1. If the wire drive motor is | 1. Perform the Wire Drive Test. | |||
pulled. Fan runs, gas flows and | running, make sure that the | 2. If wire drive test is OK, then |
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machine has correct open circuit | correct drive roll and wire |
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check for OCV at CAP- and |
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voltage. ( 33 vdc maximum) - | guide is installed in the |
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CAP+ on the control board. If | |||||
weld output. |
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| correct voltage is present, |
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| 2. Check for clogged cable liner | possible faulty Control P.C. |
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| or contact tip. | Board. Replace. |
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| 3. Check for proper size cable | 3. If open circuit voltage is not |
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| liner and contact tip. | present at CAP- and CAP+ on | ||
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| control board check continuity | ||
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| of leads. |
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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 the Lincoln Electric Service Department for technical troubleshooting assistance before you proceed. Call
