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E-4
TROUBLESHOOTING
E-4
POWER FEED 11
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
4. Tip seizes in diffuser.
5. Unit shuts off while welding or
attempting to weld, status light is
red/green alternating between
colors every second. Unit tries to
recover after 30 seconds and
may repeat again.
6. Drive roll does not turn although
arc voltage is present, and solenoid
is on. Feed head and Control Box
status LEDs are both solid green.
a. Tip overheating due to prolonged
or excessive high current and/or
duty cycle welding.
Note:
A light application of high
temperature antiseize lubri-
cant (such as Lincoln E2067
Graphite Grease) may be
applied to tip of threads.
a. Wire feed shut down circuit
maybe electrically open. (Leads
570 and 572 in wire feed head.
b. The wire drive motor may be
overloaded. Check for mechani-
cal restrictions in the wire feeding
path.
a. Check for loose or broken leads
at the wire drive motor.
b. Defective wire feed motor or feed
head PC board. Note: With WFS
set to max control board should
supply 24 VDC to motor (leads
#550, #551).
If all recommended possible areas of
misadjustment have been checked
and the problem persists, Contact
your local Lincoln Authorized
Field Service Facility.