Troubleshooting & repair – Lincoln Electric INVERTEC POWER WAVE 450 SVM112-B User Manual

Page 233

F-173

INPUT RECTIFIER REMOVAL AND REPLACEMENT

(continued)

TROUBLESHOOTING & REPAIR

10. With the 5 mm Allen wrench and the 10

mm open end wrench, remove the two
screws mounting the input rectifier to the
heat sink panel.

11. When replacing the input rectifier, apply a

thin, even coating of Dow Corning 340
Joint Compound (Lincoln T12837) to the
mating surfaces between the input rectifi-
er and the heat sink panel. Avoid applying
the compound to either the mounting
holes or the mounting hardware.

12. Mount the input rectifier to the heat sink

panel and tighten the two mounting
screws with the 5 mm Allen wrench and
the 10 mm open end wrench. Be sure to
tighten the screws evenly.

13. With the Phillips head screw driver, attach

the positive (+) and negative (-) leads to
the input rectifier. Attach the three heavy
leads and the M.O.V. assembly to the
input rectifier. Replace the M.O.V. assem-
bly if it appears damaged.

14. Apply silicone sealant to the M.O.V.

assembly connections.

15. Install the machine case sides and top.

16. Install the handle and the lift bail rubber

gasket.

POWER WAVE 450