See figure f.31, 3/16" allen bolts front rear, Troubleshooting and repair – Lincoln Electric POWER WAVE 355M User Manual

Page 113

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INPUT RECTIFIER REMOVAL AND REPLACEMENT

(continued)

TROUBLESHOOTING AND REPAIR

F-67

F-67

POWER WAVE 355M/405M

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9. Apply a thin coat of Penetrox A-13 heatsink com-

pound to the point of contact between the input
rectifier and the mounting surface.

10. Secure the new input bridge into its proper posi-

tion with the two 3/16”in. allen mounting screws
previously removed. Torque to 44 inch pounds.

11. Reconnect the previously removed leads to their

proper locations. Torque to 31 inch pounds.

12. Cover the input rectifier and its six terminals with

silicon sealant.

13. Replace the case wraparound cover.

#207A

#207

#209

A

B

C

3/16" ALLEN

BOLTS

FRONT

REAR

Small Lead "A"

To Circuit Breaker

Small Lead "H1"

To Auxiliary Transformer

FIGURE F.31 – INPUT RECTIFIER (CLOSE-UP)

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