Lincoln Electric POWER WAVE 355/405 SVM159-A Service Manual page 98

F-56
SNUBBER BOARD REMOVAL AND REPLACEMENT (continued)
PROCEDURE
1. Remove input power to the POWER WAVE
355/405.
2. Using a 5/16" nut driver remove the case wrap-
around cover.
Snubber
Board
5. Remove small lead #B1 from the board.
Figure F.24.
6. Remove the four bolts using a 7/16" socket. Two
of these bolts have leads #30 and #10 connected
to them. Note the position of all leads and associ-
ated washers upon removal.
7. Carefully remove the snubber board.
TROUBLESHOOTING & REPAIR
FIGURE F.23 – SNUBBER BOARD LOCATION
LEFT SIDE
See
FIGURE F.24 – SNUBBER BOARD LEADS (CLOSE UP)
Lead 10
POWER WAVE 355/405
3. Perform the Input Filter Capacitor Discharge
Procedure detailed earlier in this section.
4. Locate the snubber board.. See Figure F.23.
8. Replace the snubber board.
9. Replace the bolts, leads, and washers previously
removed. Torque bolt to 30-40 Inch Lbs.
10. Reconnect small lead B1 previously removed.
11. Replace the case wraparound cover.
Lead 30
Lead B1
F-56