Replacing air filters – Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) User Manual
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Rockwell Automation Publication 7000-UM151E-EN-P - January 2013
Chapter 3 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.
):
1. Using an 8mm 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. It 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 Clean – 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.