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LINCOLN ELECTRIC
AUXILIARY RECTIFIER (D4) REMOVAL AND REPLACEMENT PROCEDURE
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 troubleshooting assistance before you proceed. Call 1-888-935-3877.
TEST DESCRIPTION
This procedure will aid the technician in the removal and replacement of the
MATERIALS NEEDED
3/8" Nutdriver
Dow Corning 340 Heat Sink Compound (Lincoln Part #T12837)
Wiring Diagram
REMOVAL PROCEDURE
1. Carefully remove input power from the FlexCut 200 machine.
2. Perform the Case Cover Removal Procedure.
3. Perform the Capacitor Discharge Procedure.
4. Label and disconnect leads X14A, POS, X13B and NEG from the auxiliary rectifier (D4). See Figure
F.70. See Wiring Diagram.
5. Using a 3/8" nutdriver, remove the nut securing the auxiliary rectifier (D4) to the mounting post.
See Figure F.71.
6.
The
auxiliary rectifier (D4)
REPLACEMENT PROCEDURE
1. Apply a thin coating of Dow Corning 340 heat sink compound to the rear of the auxiliary rectifier
(D4).
2. Carefully position the new auxiliary rectifier (D4) onto the mounting post.
3. Using a 3/8" nutdriver, attach the nut securing the auxiliary rectifier (D4) to the vertical divider
panel.
See Wiring Diagram.
4. Connect leads X14A, POS, X13B and NEG to the auxiliary rectifier (D4). See Wiring Diagram.
5.
Perform the
Case Cover Replacement
6. Perform the Retest After Repair Procedure.
can now be removed and replaced.
Procedure.
FlexCut® 200 Service Manual
Auxiliary Rectifier
(D4).
93
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Troubleshooting
