Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control (PanelView 550) - Manual (Page 161)

Component Definition and Maintenance 4-35
7000 “A” Frame 7000A-UM151D-EN-P – March 2013
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.
Procedure (see Figure 4. 24 ):
Using an 8 mm (5/16”) Hex key, loosen the ¼ turn fasteners and
swing open the hinged grill assembly.
Remove filter material.
Note that if the drive is running, the filter must be replaced as soon as
possible so that foreign material is not drawn into the drive.
Care must be taken in removing the filter, to prevent dirt that has
accumulated on the inlet side of the filter from being sucked into the drive.
It may be difficult to remove the filter material without tearing it due to
the suction at the air inlet.