Air filters are designed to capture contamination while allowing air to pass through. As a filter loads up with contamination, the air passages are reduced. This results in higher "static pressure" which leads to restricted air flow.
All filters have published data that explain the initial and final static pressure (measured in "inches of water column"). When the final resistance is reached, the filter must be changed. A loaded filter that is left unchanged will allow particles to pass through. A blower equipped with a variable speed drive can increase the RPM's to accommodate the changing conditions.
There are many types of filters used in a paint system and we will recommend the best type of filter and also provide a schedule for replacing them. This can be used as a starting point but careful monitoring and data tracking is necessary to develop your filter changing schedule.
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