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TROUBLESHOOTING & REPAIR
F-13 F-13
INVERTEC STT
T1 AUXILIARY TRANSFORMER TEST
WARNING
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 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
1-888-935-3877
TEST DESCRIPTION
This test will determine if the correct voltages are being:
a. applied to the primary of the T1 auxiliary transformer.
b. induced upon the secondary windings of the T1 auxiliary transformer.
MATERIALS NEEDED
Volt/Ohmmeter (Multimeter)
Invertec STT wiring diagrams
5/16" Nut driver
3/8" Wrench
Slot head screw driver
Note: Component locations and disassembly procedures may
vary slightly on STT II models