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| TROUBLESHOOTING & REPAIR |
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| TROUBLESHOOTING GUIDE | Observe Safety Guidelines | |
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| detailed in the beginning of this manual. | |
PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED | ||
(SYMPTOMS) | MISADJUSTMENT(S) | COURSE OF ACTION | ||
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| TIG MODE PROBLEMS |
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Gas and/or water do not flow, | 1. | The machine must be in TIG | 1. | Check for proper operation of |
even though the gas and/or water |
| mode. The gas, water and |
| the gas and/or water sole- |
LEDs are lit. |
| high frequency circuits do NOT |
| noids. |
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| function in Stick mode. | 2. | If 115VAC is applied to the |
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| 2. | Check the gas and/or water |
| solenoids, they should activate |
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| supplies for adequate pressure |
| and allow gas or water to flow. |
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| or kinked or broken hoses. | 3. | If 115VAC is applied to the |
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| solenoids and they do NOT |
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| activate, the solenoids may be |
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| faulty. Replace. |
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| 4. | Perform the Control Board |
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| Test. |
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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
SQUARE WAVE TIG 355
