Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive - Air-Cooled (A Frame) - Manual (Page 297)

Component Definition and Maintenance 5-55
7000 “A” Frame 7000A-RM001A-EN-P – January 2011
DC Link / Fan Section
NOTE: If rear panel access is possible, remove rear middle panel of
the DC link / fan portion of the cabinet and remove the inlet ring
from the back.
Procedure
If rear panel access is not possible, follow this procedure:
1. Remove bolts and swingout low voltage panel (see Fig. 5.30).
2. Remove bolts from the inlet ring being careful not to allow the ring to
fall.
3. Remove inlet ring via the bottom access panel by moving it around
the DC link and diagonally out the door. Shifting of the DC link may
be required.
4. To install the new ring, reverse the above procedure. Rotate the fan
impeller by hand to ensure that there is no contact with the inlet ring.
Move the ring and retighten bolts to eliminate interference.
5. Replace all panels and barriers opened or removed during inlet ring
replacement.
Top of Integral Isolation Transformer Section
1.
Remove fan as described in “Fan Replacement”.
2.
Disassemble bolts and remove inlet ring.
3.
To install new ring, reverse the above procedure. Rotate the fan
impeller by hand to ensure that there is no contact with the inlet ring.
Move the ring and retighten bolts to eliminate interference.
4.
Replace all panels and barriers opened or removed during inlet ring
replacement.