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TROUBLESHOOTING & REPAIR
F-15 F-15
LINCOLN
®
ELECTRIC
IDEALARC DC-400
INPUT CONTACTOR TEST
WARNING
Service and repair should be performed by only Lincoln Electric factory trained person-
nel. Unauthorized repairs performed on this equipment may result in danger to the tech-
nician or machine operator and will invalidate your factory warranty. For your safety and
to avoid electrical shock, please observe all safety notes and precautions detailed
throughout this manual.
If for any reason you do not understand the test procedures or are unable to perform the
test/repairs safely, contact the Lincoln Electric Service Department for electrical trou-
bleshooting assistance before you proceed. Call 216-383-2531 or 1-800-833-9353
(WELD).
DESCRIPTION
This test will help determine if the input contactor is receiving the correct coil voltage and
if the contacts are functioning correctly.
MATERIALS NEEDED
Volt/Ohmmeter (Multimeter)
5/16” Nut driver
Idealarc DC 400 Wiring Diagrams (See the Electrical Diagrams section of this
manual.)
External 120VAC supply
