Red-D-Arc LN25 PRO EXTREME Operator's Manual page 34

E-4
PROBLEMS
(SYMPTOMS)
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.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your
Local Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
TROUBLESHOOTING
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
Output Problems
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.
RED-D-ARC LN25™ PRO EXTREME
CAUSE
1. Replace the contact tip.
2. Verify all work and electrode con-
3. Adjust polarity to the recommend-
4. Adjust the gas nozzle and shorten
5. Check gas flow and mixture.
Use the set-up Push-button to turn
Run-in OFF.
1. See "Gas Metal Arc Welding
CAUTION
RECOMMENDED
COURSE OF ACTION
nections are tight and that the
cables are in good condition.
Clean/replace as necessary.
ed procedure.
the stickout to 3/8 to 1/2 inches.
Remove or block sources of
drafts.
Guide" (GS-100).
E-4