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F-173

F-173

TROUBLESHOOTING & REPAIR

INPUT RECTIFIER REMOVAL AND REPLACEMENT (continued)

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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.

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POWER WAVE 450

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Lincoln Electric SVM112-B service manual 173