Lincoln Electric POWER FEED 25M Operator's Manual page 67

®
POWER FEED 25M & 25M ALUMINUM
PROBLEMS
(SYMPTOMS)
Wire feed speed consistently operates at the
wrong value.
Variable or "hunting" arc.
Poor arc starts with sticking or "blast-offs",
weld porosity, narrow and ropy looking
bead.
The wire feed speed/amperage and
voltage/trim display work during preset but
show nothing during welding.
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized
Field Service Facility for technical troubleshooting assistance before you proceed.
Observe all Safety Guidelines detailed throughout this manual
POSSIBLE
CAUSE
Output Problems
1. The wire feeder gear setting is not
properly set.
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.
1. Improper procedures or techniques.
1. The software in the POWER FEED
must be upgraded.
E-4
1. Verify the POWER FEED
setting matches the gear mounted. See
the Instruction Manual for setting the
gear speed.
1. Replace the contact tip.
2. Verify all work and electrode connections
are tight and that the cables are in good
condition. Clean/replace as necessary.
3. Adjust polarity to the recommended
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.
1. See "Gas Metal Arc Welding Guide".
(GS-100).
® 25M 1. Contact the local authorized Lincoln Field
Service Shop.
CAUTION
TROUBLE SHOOTING
RECOMMENDED
COURSE OF ACTION
® -15 software