18 |
| TROUBLESHOOTING | 18 |
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| Observe all Safety Guidelines detailed throughout this manual | |||
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| PROBLEMS | POSSIBLE AREAS OF | RECOMMENDED |
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| (SYMPTOMS) | MISADJUSTMENTS(S) | COURSE OF ACTION |
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TIG WELDING PROBLEMS
No high frequency. Machine is in | 1. | If the machine location is in a |
either 2 or 4 Step TIG Mode and has |
| highly dirty environment with |
normal output. Fan is running and |
| conductive contaminants, check |
power light is on. |
| and clean the spark gap with a |
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| low pressure air stream per the |
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| maintenance instructions. |
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No gas flow when Amptrol is activat- | 1. | Gas supply is empty or not |
ed in the 2/4 Step TIG Modes. |
| turned on. |
Machine has output - fan runs. A |
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“Click” can be heard indicating that | 2. | Flow regulator may be set too |
the gas solenoid valve is operating. |
| low. |
| 3. | Gas hose may be pinched. |
| 4. | Gas flow may be blocked with |
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| dirt. Check filter screen inside |
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| gas inlet fitting to solenoid valve. |
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| Use filters to prevent reoccur- |
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| rence. |
| 5. | Consult your local welder/gas |
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| distributor. |
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When AC TIG welding, the arc is | 1. | Tungsten electrode may be too |
erratic and there is a loss of “clean- |
| small for process. Use a larger |
ing” of the work piece. |
| diameter tungsten or a pure |
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| tungsten. |
| 2. | If a helium blend is used as a |
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| shielding gas, then reduce the |
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| percentage of helium. |
| 3. | Gas shielding may be insuffi- |
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| cient. Increase gas flow; reduce |
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| tungsten stickout beyond gas |
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| cup. Minimize crossdrafts in |
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| welding area. |
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The end of the tungsten electrode | 1. | The welding current is too high |
melts away. |
| for the electrode type and/or |
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| size. See the Table B.1 in the |
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| Operation Section of this manu- |
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| al. |
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Contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance.
CAUTION
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
