Danfoss VLT HVAC FC 100, Руководство по обслуживанию, Страница: 157 / 220

7. Remove the 4 (10 mm) retaining nuts at the top of the IGBT bus bar assy.
8. Remove the 12 retaining screws (6 on each module) on the upper portion of the IGBT
modules. These screws also attach the snubber capacitors to the IGBT modules (see
Figure 7-23, item 5 for snubber capacitor location). Remove the snubber capacitors.
9. Remove the 10 mm retaining nut from the IGBT bus bar assy.
10. Remove the IGBT bus bar assy.
11. At the bottom end of the IGBT module, remove the 12 retaining screws (4 each for U,
V, and W intermediate IGBT output bus bars).
12. Remove the retaining nut (8 mm) from the 3 intermediate IGBT output bus bars. Remove
the intermediate IGBT output bus bars.
CONTINUED ON NEXT PAGE
130BX98.10
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Figure 7.24: D2/D4 IGBT Modules (2 of 3)
1 Intermediate IGBT output bus bar BB30 (Step 12) 7 IGBT bus bar assembly BB29 (Steps 7 & 10)
2 Retaining nut (Step 12) 8 Retaining nut (Step 7)
3 Retaining screws (Step 11) 9 IGBT module
4 IGBT module 10 BB30
5 Retaining screws (shown removed) (Step 8) 11 BB31
6 Retaining nut (Step 9)
7 D-Frame Sizes Disassembly and Assembly
Instructions
High Power Service Manual for VLT
®
FC Series
Adjustable Frequency Drives
7-26
MG.90.L1.22 - VLT ® is a registered Danfoss trademark
7