128 Rockwell Automation Publication 7000-UM202H-EN-P - November 2023
Chapter 2 Power Component Definition and Maintenance
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 129
):
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.
Recommended cleaning method of filters:
• Vacuum – A few passes of a vacuum cleaner on the inlet side of the filter
will remove accumulated dust and dirt in seconds.
• Blow with compressed air – point compressed air nozzle in opposite
direction of operating air flow (Blow from exhaust side toward intake
side)
• Cold water rinse – Under normal conditions the foam media used in the
filters, require no oily adhesives. Collected dirt is washed away quickly
and easily using just a standard hose nozzle with plain water. (Ensure
filter is completely dry before reinstalling)
• Immersion in warm, soapy water – Where stubborn air-borne dirt is
present, the filter may be dipped in a solution of warm water and mild
detergent. Then simply rinse in clear clean water, let stand until
completely dry and free of moisture, and return to service.
Use only Rockwell Automation supplied or approved replacement filters.
Replace the filters in the reverse order of its removal. Check that there are no
openings to allow foreign matter to enter the drive.
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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