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Observe all Safety Guidelines detailed throughout this manual
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
$B64?HG;BE<M87<8?7+8EI<6846<?<GL for technical troubleshooting assistance before you proceed.
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Variable or "hunting" arc.
When the trigger is pulled, the wire
feeds slowly.
Poor arc starts with sticking or
"blast-offs", weld porosity, narrow
and ropy looking bead.
1. Wrong size, worn and/or melted
contact tip.
2. Worn work cable or poor work
connection.
3. Wrong polarity.
4. The gas nozzle is extended
beyond the contact tip or the wire
stickout is too long.
5. Poor gas shielding on processes
requiring gas.
The Run-In switch is “ON”.
1. Improper procedures or tech-
niques.
1. Replace the contact tip.
2. Verify all work and electrode con-
nections are tight and that the
cables are in good condition.
Clean/replace as necessary.
3. Adjust polarity to the recommend-
ed procedure.
4. Adjust the gas nozzle and shorten
the stickout to 3/8 to 1/2 inches.
5. Check gas flow and mixture.
Remove or block sources of
drafts.
Use the set-up Push-button to turn
Run-in OFF.
1. See "Gas Metal Arc Welding
Guide" (GS-100).
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