Lincoln Electric IM10029 POWER WAVE S350CE - Manual (Page 37)

E-7 TROUBLESHOOTING E-7
POWER WAVE® S350CE
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 burns back to tip at the end of
the weld.
Machine output shuts down during a
weld.
Machine wonʼt produce full output.
Excessively long and erratic arc.
1. Burnback Time
1. Secondary current limit has been
exceeded, and the machine shuts
down to protect itself.
2. System Fault
1. Input voltage may be too low, lim-
iting output capability of the power
source.
2. Machine calibration.
1. Wire feed problem.
2. Loss of, or improper Shielding
Gas
3. Machine calibration.
1. Reduce burnback time and/or
work point.
1. Adjust procedure or reduce load
to lower current draw from the
machine.
2. A non-recoverable fault will inter-
rupt welding. This condition will
also result in a status light blink-
ing. See the Status Light section
for more information.
1. Make certain that the input voltage
is proper, according to the Rating
Plate located on the rear of the
machine.
2. Calibrate secondary current and
voltage.
1. Check for feeding problems. Make
sure proper gear ratio has been
selected.
2. Verify gas flow and type are cor-
rect
3. Calibrate secondary current and
voltage.
Weld and Arc Quality Problems (Continued)