Rockwell Automation Publication 7000-UM202D-EN-P - May 2018 127
Power Component Definition and Maintenance Chapter 2
If rear panel access is not possible, follow this procedure:
1. Remove the DC Link barrier and impeller access panel (Figure 105 on
page 122). Remove electrical components in front of the inlet ring access
panel.
2. Remove bolts from the inlet ring; do 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. You may have to shift the DC link.
4. To install the new ring, reverse the above procedure. Rotate the fan
impeller by hand to check clearance inside the inlet ring.
Move the ring and retighten bolts to eliminate interference.
5. Replace access panels and electrical components.
Replacing Air Filters
Air filters are located at the cooling air intake grill mounted on the door in
front of the converter, line reactor, and transformer cabinets.
You must periodically remove and clean, or remove and replace, the filter
material. The frequency with which you renew the filters depends on the
cleanliness of the available cooling air.
You can replace filters in an operational drive, but the procedure is easier to
perform while the drive is shut down.
Procedure (see Figure 109 on page 128
):
1. Using an 8 mm Hex key, loosen the ¼ turn fasteners and swing open the
hinged grill assembly.
2. Remove filter material. If the drive is running, you must replace the filter
as soon as possible to prevent foreign material from falling into the drive.
Be careful when removing the filter to prevent accumulated dirt on the inlet
side of the filter from being sucked into the drive. The filter may be difficult to
remove the filter material without tearing it due to the suction at the air inlet.
IMPORTANT The fan must not make contact with the inlet ring.
ATTENTION: For arc resistant drives, equipment is not rated as arc resistant
while the filter covers are open. Filter covers must be bolted closed to
maintain arc resistant structural integrity.
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