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TROUBLESHOOTING & REPAIR
F-27 F-27
IDEALARC DC-655
WARNING
CONTROL TRANSFORMER (T2) TEST
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 elec-
trical shock, please observe all safety notes and precautions detailed throughout this manu-
al.
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).
TEST DESCRIPTION
This procedure will determine if the correct voltage is being applied to the primary of the con-
trol transformer and also if the correct voltage is being induced upon the secondary winding.
MATERIALS NEEDED
Volt/ohmmeter (Multimeter)
DC-655 Wiring Diagram