Troubleshooting & repair, Chopper module removal and replacement (continued) – Lincoln Electric VANTAGE 400 User Manual

Page 141

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CHOPPER MODULE REMOVAL AND REPLACEMENT (CONTINUED)

REPLACEMENT

1. Mount the heat sink to the brackets on the ver-

tical baffle with the three 3/8” screws. Mount
the plastic strip with the top two screws.

2. Connect leads 23 and 25 at their in-line cou-

plers.

3. Using a 7/16” wrench, attach the heavy leads

and small leads as follows. Note placement of
leads and fasteners: screw, lock washer, flat
washer, small lead, heavy lead. Apply a thin
coating of electrical thermal joint compound
(Dow Corning) to the mating surfaces (but not
the threads). Tighten the fasteners to between
50-60 in-lbs.

4. Replace any cable ties cut at disassembly.

5. When procedures are complete, perform the

Case Cover Replacement procedure.

TROUBLESHOOTING & REPAIR

F-93

F-93

VANTAGE® 400

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