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V300-I
TROUBLESHOOTING & REPAIR
F-59 F-59
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OUTPUT DIODE REPLACEMENT PROCEDURE
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 pre-
cautions detailed throughout this manual.
If for any reason you do not understand the test procedures or are unable to per-
form the test / repairs safely, contact the Lincoln Electric Service Department for
electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.
DESCRIPTION
This procedure will aid in the relpacement of the Output Diodes.
MATERIALS NEEDED
Misc. Hand Tools
Torque Wrench (60 in./lb.)
Wiring Diagram (Section G)
NOTE: Most Output Rectifier Assemblies are made with two sets of five individual diodes
connected in parallel. If one or more diodes in a set fails, all five must be replaced.
Some Output Rectifier Assemblies are made with Diode Modules. It is only necessary to
replace the Defective part on these units