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TROUBLESHOOTING & REPAIR
AUXILIARY TRANSFORMER PRIMARY WIRING HARNESS 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 electri- cal 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 troubleshooting assistance before you proceed. Call
TEST DESCRIPTION
This test will determine if there are any short circuits or other problems in the circuit feeding the primary windings of the auxiliary transformers, which would cause the fuse (F1) on the recon- nect panel to blow.
MATERIALS NEEDED
Volt/Ohmmeter (Multimeter) 5/16" Nut driver
3/8" Nut driver
Input and Auxiliary Circuit Wiring Diagram – Figure F.10
Machine Wiring Diagram in the Electrical Diagrams section of this manual Protection PC Board Schematic in the Electrical Diagrams section of this manual
This procedure takes approximately 20 minutes to perform.
