Lincoln Electric INVERTEC SVM129-B - Manual (Page 107)

TROUBLESHOOTING & REPAIR
F-69 F-69
INVERTEC® STT® & STT® II
CAPACITOR REPLACEMENT
NOTE: Capacitors must always be replaced in
matched sets (C1 and C2 as a set).
When replacing Capacitors, remove the entire
FET heat sink assembly, including the capacitors
and switch board, as a unit.
Disassemble and reassemble only one unit at a
time. Use the other unit as a model during
reassembly so that all parts are reinstalled prop-
erly.
14. Remove the two 3/8” hex head nuts from the
top of the through-bolts. The hex nuts are
located on top of the fan shroud. See Figure
F.34.
CAPACITOR REMOVAL AND REPLACEMENT PROCEDURE (continued)
FIGURE F.34 – REMOVING HEX HEAD NUTS OF THROUGH-BOLTS
HEX NUT
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