Lincoln Electric V350-PRO User Manual download pdf (Page 125)

8. Under the copper plate previously removed, there

is an allen bolt. Remove it using a 9/64” allen

wrench.

9. Using a 7/16” socket remove the mounting bolts at

the top and bottom of the modules. See Figure

F.39.

10. The output rectifier modules are ready for removal

and/or replacement.

11. Before replacing the diode module, apply a thin

even coat of Penetrox A-13 heatsink compound

to the bottom surface of the diode module. Note:

Keep the compound away from the mounting

holes.

12. Press the module firmly against the sink while

aligning the mounting holes. Insert each outer

screw through a spring washer and then a plain

washer and into the holes. Start threading all

three screws into the heat sink (2 or 3 turns by

hand).

13. The screw threads may catch on the threads of

the heat sink, so be sure to get the face of the

screw into contact with the surface of the module

(using just hand torque).

14. Using a 7/16” socket, tighten each mounting bolt

to between 5 and 10 inch pounds.

15 Tighten the center allen screw to between 12 and

18 inch pounds.

16. Tighten each mounting bolt again (30 to 40 inch

pounds this time).

15. Replace leads #X2, #X4, #20, #40 to their original

terminals in their proper positions. Torque bolts to

30-40 Inch Pounds.

16. Perform the Snubber Board Replacement

Procedure detailed earlier in this section.

17. Replace the case wraparound cover.

TROUBLESHOOTING & REPAIR

OUTPUT RECTIFIER MODULES

REMOVAL AND REPLACEMENT (continued)

F-87 F-87

V350-PRO

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC

LEFT SIDE

Mounting Bolts

3/16" Allen

Bolts

9/64" Allen

Bolts

FIGURE F.39 – OUTPUT RECTIFIER MODULE MOUNTING BOLT LOCATIONS

1 2 ... 120 121 122 123 124 125 126 127 128 129 130 ... 154 155

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Lincoln Electric V350-PRO User Manual Page 125

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