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溶接システム Miller HF-251-2のPDF オーナーズマニュアルをオンラインで閲覧またはダウンロードできます。Miller HF-251-2 38 ページ。 Miller electric high-frequency arc starter and stabilizer specifications
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4-3. Troubleshooting
Trouble
Unit completely inoperative; Pilot light
Off.
Lack of high-frequency; difficulty in es-
tablishing an arc.
Wandering arc – poor control of direction
of arc.
Tungsten electrode oxidizing and not re-
maining bright after conclusion of weld.
Secure input power cord plug in receptacle (see Section 2-8).
Place Power switch in the On position (see Section 3-5).
Place High Frequency Selector Switch in the correct position (see Section 3-3).
Be sure torch cable is not close to any grounded metal.
Check cables and torch for cracked insulation or bad connections. Repair or replace necessary parts.
Increase setting of High Frequency Intensity Control (see Section 3-4).
Select proper size tungsten (see Section 7-1).
Check spark gaps and adjust if necessary (see Section 4-2).
Reduce gas flow rate (see Section 2-3).
Select proper size tungsten (see Section 7-1).
Properly prepare tungsten (see Section 7-2 or 7-3).
Increase setting of High Frequency Intensity Control (see Section 3-4).
Shield weld zone of drafts.
Check and tighten all gas fittings (see Section 2-3).
Properly prepare tungsten (see Section 7-2 or 7-3).
Replace torch parts if water has leaked into torch.
Remedy
OM-611 Page 19