Prefiltering air Problem: Keeping fans and coils in machine tools and other equipment clean improves their operating efficiency and reduces maintenance expenses. Filters are typically installed by the original equipment manufacturer to remove dirt and other contaminants before they hit the fan or coil. Can more be done?
Solution: Add a second layer of protection to prefilter incoming air. Take rolls or pieces of polyester filter material and apply them to the outside perimeter of the air intake of the OEM muffinfan, coils, etc. Equipment operators can replace the material when it gets dirty, which is obvious because the filter material is available in light blue or white. Use Velcro (hook portion only) with an adhesive backing and apply it around the outside perimeter of the OEM filter or fan to hold the polyester material.
The prefilter keeps the OEM filter cleaner, extends its life dramatically, and reduces maintenance costs.