Lincoln-electric IDEALARC R3R-500 Bedienungsanleitung PDF herunterladen (Seite 79)

REASSEMBLY

13. For reassembly, carefully place the SCR/ diode

assembly into position on the mounting brackets.

14. Replace and tighten the four nuts and lockwash-

ers that hold the SCR/diode assembly to the

mounting brackets.

15. Reattach the three heavy aluminum secondary

leads and snubber leads to the SCR finned heat

sinks. Apply a thin coating of Dow Corning 340

heat sink compound to connection points.

16. Attach plug J4 (or individual gate leads) to the

control board.

17. Attach the positive lead and shunt to the positive

heat sink plate.

18. Attach the two #220 leads to the right side of the

negative heat sink plate.

19. Connect the choke switch lead to the left side of

the negative heat sink plate. See Figure F.27.

20. Install the glastic stiffeners to the left and right

sides. See Figure F.27.

21. Attach the air deflector to the front panel (R3R

500). See Figure F.27.

22. Check all lead placements and secure.

23. Attach the front assembly to the machine’s base.

24. Install the front control panel and case top and

sides.

TROUBLESHOOTING

F-45 F-45

IDEALARC R3R

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

SCR/DIODE RECTIFICER ASSEMBLY

REMOVAL AND REPLACEMENT (continued)

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Lincoln-electric IDEALARC R3R-500 Bedienungsanleitung Seite 79