Lincoln Electric 11141 Service Manual page 104

F-58
SNUBBER BOARD REMOVAL AND REPLACEMENT (continued)
PROCEDURE
1. Remove input power to the POWER WAVE
355M/405M.
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.25.
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 AND REPAIR
FIGURE F.24 – SNUBBER BOARD LOCATION
See
FIGURE F.25 – SNUBBER BOARD LEADS (CLOSE UP)
Lead 10
POWER WAVE
3. Perform the Input Filter Capacitor Discharge
®
Procedure detailed earlier in this section.
4. Locate the snubber board.. See Figure F.24.
LEFT SIDE
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
® 355M/405M
F-58