Lincoln Electric POWER WAVE S500 Service Manual page 146

F-98
POWER CONVERSION BOARD ASSEMBLY
REMOVAL AND REPLACEMENT PROCEDURE (continued)
REPLACEMENT PROCEDURE
1. Position the new Power Conversion Board
Assembly onto the mounting post.
NOTE: The top of the Power Conversion Board
Assembly will have to be positioned into
place first.
2. Using a nut and washer previously removed,
Secure the new Power Conversion Board
Assembly onto the mounting post. See Figure
F.38.
3. Using a 5/6" nutdriver, replace the five mounting
screws and washers previously removed.
4. Attach leads B4 and B5 onto their respective
bus bars. See Figure F.38.
Diagram. Torque the bolts to between 50 and
60 inch pounds.
5. Attach the bottom choke leads to terminals B6
and B7. See Figure F.38. See Wiring Diagram.
Torque the bolts to between 50 and 60 inch
pounds.
TROUBLESHOOTING AND REPAIR
See Wiring
POWER WAVE
6. Attach the top choke leads to terminals B13 and
B8. See Figure F.38. See Wiring Diagram.
Torque the bolts to between 50 and 60 inch
pounds.
7. Attach the two heavy leads 901C and 901A to
the heat sink terminal. See Figure F.38. See
Wiring Diagram. Torque the bolts to between
50 and 60 inch pounds.
8. Attach the heavy lead B2 to terminal B56. See
Figure F.38. See Wiring Diagram. Torque the
bolts to between 50 and 60 inch pounds. Note
chokesʼ lead placement.
9. Attach plugs J32, J33, J34, J35, J36 and J37.
See Figure F.38. See Wiring Diagram.
10. Attach the air baffle. See Figure F.37.
11. Clear and position all leads.
12. Perform the Case Cover Replacement
Procedure.
® S500
F-98