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F-31
TROUBLESHOOTING & REPAIR
F-31
WIRE-MATIC 250
MATERIALS NEEDED
5/16" Nut driver.
1/2" Open end wrench.
1/2" Socket wrench, universal tool, and extension.
3/8" Open end wrench.
Slot head screwdriver.
Wire cutters.
SCR OUTPUT RECTIFIER REMOVAL & REPLACEMENT
Service and repair should be performed only by Lincoln Electric factory trained per-
sonnel. Unauthorized repairs performed on this equipment could result in danger to
the technician or the machine operator and will invalidate your factory warranty. For
your safety and to avoid electrical shock, please observe all safety notes and pre-
cautions 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 the Lincoln Electric service department for technical
troubleshooting assistance before you proceed.
Call (216) 383-2531 or (800) 833-9353 (WELD).
_____________________________________________________________
WARNING