5-3. Troubleshooting
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| Trouble | Remedy | |||
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Unit completely inoperative; Pilot light | Secure input power cord plug in receptacle (see Section | ||||
Off. |
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| Place Power switch in the On position (see Section |
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Lack of | Place High Frequency Selector Switch in the correct position (see Section | ||||
tablishing an arc. |
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| Be sure torch cable is not close to any grounded metal. |
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| Check cables and torch for cracked insulation or bad connections. Repair or replace necessary parts. |
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| Increase setting of High Frequency Intensity Control (see Section |
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| Select proper size tungsten (see Section |
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| Check spark gaps and adjust if necessary (see Section |
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Wandering arc − poor control of direction | Reduce gas flow rate (see Section | ||||
of arc. |
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| Select proper size tungsten (see Section |
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| Properly prepare tungsten (see Section |
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| Increase setting of High Frequency Intensity Control (see Section |
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Tungsten electrode oxidizing and not re- | Shield weld zone of drafts. | ||||
maining bright after conclusion of weld. |
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| Check and tighten all gas fittings (see Section |
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| Properly prepare tungsten (see Section |
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| Replace torch parts if water has leaked into torch. |
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