Lincoln Electric INVERTEC V275-S Service Manual page 92

F-62
INPUT RECTIFIER REMOVAL AND REPLACEMENT (continued)
PROCEDURE
1. Remove input power to the V275-S.
2. Using a 5/16" nut driver, remove the case wrap-
around cover.
5. Carefully remove the Dow Corning 340 that is insu-
lating the terminals of the input rectifier.
6. Label leads and using a phillips head screwdriver,
remove the six leads from the input rectifier. See
Figure F.33.
7. Using a 3/16" allen wrench, remove the two input
rectifier mounting screws. See Figure F.33.
8. When replacing the input rectifier be sure to apply
a thin layer of heatsink compound to all contact
surfaces.
9. Replace the to 3/16" allen screws previously
removed.
TROUBLESHOOTING & REPAIR
FIGURE F.32 - Input Rectifier Location
Input
Rectifier
V275-S
3. Perform the Input Filter Capacitor Discharge
Procedure detailed earlier in this section.
4. Locate the input rectifier. See Figure F.32.
10. Replace the six phillips head screws securing the
leads to the input rectifier. See a wiring diagram if
necessary.
11. Liberally apply a coating of Dow Corning 340 to
the input rectifier terminals and their leads.
13. Replace the case wraparound cover.
F-62