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PRECISION TIG 185
TROUBLESHOOTING & REPAIR
F-25 F-25
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Service and repair should be performed by only Lincoln Electric factory trained
personnel. Unauthorized repairs performed on this equipment may result in danger
to the technician or 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 per-
form the test / repairs safely, contact the Lincoln Electric Service Department for
electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
WARNING
ACTIVE SCR TEST
TEST DESCRIPTION
This procedure will determine if the device is able to be gated “ON” and conduct current
from anode to cathode.
MATERIALS NEEDED
An SCR tester as outlined in this procedure.
Precision TIG 185 Wiring Diagrams
3/8” nutdriver