Left side snubber board, Troubleshooting & repair, Snubber board removal and replacement (continued) – Lincoln Electric POWER WAVE 355/405 SVM159-A User Manual
Page 98
PROCEDURE
1. Remove input power to the POWER WAVE
355/405.
2. Using a 5/16” nut driver remove the case wrap-
around cover.
3. Perform the Input Filter Capacitor Discharge
Procedure detailed earlier in this section.
4. Locate the snubber board.. See Figure F.23.
5. Remove small lead #B1 from the board. See
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.
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.
TROUBLESHOOTING & REPAIR
F-56
F-56
POWER WAVE 355/405
SNUBBER BOARD REMOVAL AND REPLACEMENT (continued)
LEFT SIDE
Snubber
Board
FIGURE F.23 – SNUBBER BOARD LOCATION
Lead B1
Lead 30
Lead 10
FIGURE F.24 – SNUBBER BOARD LEADS (CLOSE UP)