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| TROUBLESHOOTING & REPAIR | |||||
| TROUBLESHOOTING GUIDE |
| Observe Safety Guidelines | |||
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| 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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| WELDING PROBLEMS |
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| No shielding gas. |
| 1. Make sure the gas supply is ade- | 1. If the gas solenoid is not operat- | ||
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| quate and the gas hoses are not | ing perform the Gas Solenoid | ||
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| loose or kinked. | Test. |
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| 2. The Control Board may be faulty. | ||
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| The shielding gas turns on sporad- | 1. The pressure in the gas line may | 1. Perform the Gas Solenoid Test. | |||
| ically, or remains on all the time. | have exceeded 80psi (5.5 bar) | 2. The Control Board may be faulty. | |||
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| The Display board shows “POS” | 1. The | 1. The Control board may be faulty. | |||
| “PRE” or “BRN”. |
| Spin” |
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| 2. The Display Board may be faulty. | ||
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| 2. One of the dip switches on the |
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| control board is set to “ON” for |
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| the timer setting mode. |
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| 1. The part being welded may be |
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| There is porosity in the weld. | wet or very dirty. |
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| 2. The electrode being used may |
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| be wet or rusty. |
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| 3. The shielding gas may be wrong |
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| for the process. |
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| 4. There may not be enough shield- |
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| ing gas. |
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| 5. Make sure the wire feed speed |
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| and arc voltage are correct for |
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| the process. |
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| The welding arc burns back to the | 1. Check the wire feeding path for | 1. Perform the Wire Drive Motor | |||
| tip. |
| mechanical restrictions, | Test. |
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| 2. Make sure the polarity is correct | 2. Perform the Hall Effect Module | ||
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| for the process. | Test. |
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| 3. The contact tip may be worn. |
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| 4. The welding voltage may be set |
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| too high or the wire feed speed |
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| set too low. |
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| 5. Check the wire drive tension. |
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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
