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OM-808 Page 17
4-3. Work Clamp
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.
sb4.1 2/93
Tools Needed:
1
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.
warn5.1* 2/93
Ref. ST-122 903-D
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.
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