Change the carbon-brush every 400hours and change the air. The sale of this item may be subject to regulation by the U. Food and Drug Administration and state and local regulatory agencies.
Or replace item for you. The item "Dental Lab Digital Single-Row Dust Collector Vacuum Cleaner for Laboratory New" is in sale since Thursday, August 10, 2017. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical & Lab Equipment, Devices\Dental Dust Collectors". The seller is "luckymall88" and is located in CA. This item can be shipped worldwide.