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TROUBLESHOOTING & REPAIR
FET MODULE REMOVAL AND REPLACEMENT
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 elec- trical 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
DESCRIPTION
The following procedure will aid the technician in removing the FET modules and main transformer for maintenance or replacement.
MATERIALS NEEDED
Slot head screw driver Phillips head screw driver 5/16" Nut driver
3/8" Nut driver
5/16" Open end or box wrench 7/16" Open end or box wrench 3/8" Socket wrench
1/2" Socket wrench Wire cutters
Machine Wiring Diagram in the Electrical Diagrams section of this manual
This procedure takes approximately 3 hours 30 minutes to perform.
