Miller Electric MOG-Pak, MOG-300 Work Clamp, Optional Polarity Switch, Arcing can damage switch

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4-3. Work Clamp

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Tools Needed:

1 Work Clamp

Connect work clamp to a clean, paint-free location on workpiece, as close to weld area as possible.

Use wire brush or sandpaper to clean metal at weld joint area. Use chipping hammer to remove slag after welding.

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4-4. Optional Polarity Switch

WARNING

ELECTRIC SHOCK can kill; TWO TIMES NORMAL OPEN-CIRCUIT VOLTS exists between electrode holders of opposite polarity.

•Do not touch live electrical parts.

•Do not touch electrode holders of opposite polarity at the same time.

•Separate electrode holders of opposite polarity to prevent contact.

•See ANSI Z49.1 and OSHA TITLE 29, CHAPTER XVII, PART 1910, Subpart Q.

ARCING can damage switch.

•Do not change Polarity switch position while welding or under load.

Arcing inside switch can damage contacts, causing switch to fail.

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1 Polarity Switch

Use switch to select polarity of weld output.

For Direct Current Electrode Nega- tive (DCEN), use Straight (Str) position.

For Direct Current Electrode Posi- tive (DCEP), use Reverse (Rev) position.

Ref. ST-122 903-D

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