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TROUBLESHOOTING & REPAIR | ||
Observe Safety Guidelines |
| TROUBLESHOOTING GUIDE |
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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| FUNCTION PROBLEMS |
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The machine will not shut off when | 1. Make sure the | 1. Check the Input Power switch |
the power switch is put in the OFF | input lines are connected cor- | (S1) and the associated leads. |
position. | rectly to the | See Wiring Diagram. |
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| 2. Perform the Input Contactor |
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| Test. |
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The Arc Control switch (S5) has no | 1. Make sure the correct process | 1. Check the Arc Control switch |
effect in CV (FCAW/GMAW) mode | and gas are being used. | (S5) for proper operation. |
when welding with the short circuit |
| 2. Check the welding Mode switch |
transfer process. |
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| (S4), the microswitches, and the | |
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| associated wiring. |
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| 3. Check to make sure the output |
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| choke control coil is not “open” |
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| or grounded. See Wiring |
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| Diagram. |
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| 4. Check resistor R1. Normal |
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| resistance is 15 ohms. |
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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
IDEALARC
LINCOLN ®
ELECTRIC
