Lincoln Electric POWER FEED IM892-C - Manual (Page 76)

E-4 TROUBLESHOOTING E-4
POWER FEED™ 25M
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
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
CAUTION
PROBLEMS
(SYMPTOMS)
POSSIBLE
CAUSE
RECOMMENDED
COURSE OF ACTION
Wire feed speed consistently oper-
ates at the wrong value.
Variable or "hunting" arc.
P o o r a r c s t a r t s w i t h s t i c k i n g o r
"blast-offs", weld porosity, narrow
and ropy looking bead.
The wire feed speed/amperage and
voltage/trim display work during pre-
set but show nothing during welding.
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. T h e g a s n o z z l e i s e x t e n d e d
beyond the contact tip or the wire
stickout is too long.
5. Poor gas shielding on processes
requiring gas.
1. I m p r o p e r p r o c e d u r e s o r t e c h -
niques.
1. T h e s o f t w a r e i n t h e P O W E R
FEED™ 25M must be upgraded.
1. Verify the POWER FEED™-15
software 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 con-
nections are tight and that the
c a b l e s a r e i n g o o d c o n d i t i o n .
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. C h e c k g a s f l o w a n d m i x t u r e .
R e m o v e o r b l o c k s o u r c e s o f
drafts.
1. S e e " G a s M e t a l A r c W e l d i n g
Guide". (GS-100).
1. C o n t a c t t h e l o c a l a u t h o r i z e d
Lincoln Field Service Shop.
Output Problems