Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control - Manual (Page 111)

Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014 111
Component Definition and Maintenance Chapter 3
DC Link / Fan Section
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 swing-out low voltage panel (see Figure 80 ).
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.
Replacement of Air Filters Air filters are located at the cooling air intake grille mounted on the door in front
of the converter, line reactor and transformer cabinets.
It is necessary to periodically remove and clean, or remove and replace the filter
material. The frequency with which the filters are renewed depends on the
cleanliness of the supplied cooling air.
It is possible to renew the filters while the drive is running, but the procedure is
easier to perform while the drive is shut down.
1. Using an 8 mm (5/16”) Hex key, loosen the ¼ turn fasteners and swing
open the hinged grill assembly.
2. Remove filter material.