One of the most important things a woodworking facility can do is engage in housekeeping and fugitive dust control. If underlying surface colors are not readily discernible on your equipment, there could be a dust deflagration hazard.
Do not ignore the wood dust. Clean it up, but do not blow it off with an air gun as that simply releases and stratifies the dust – use a vacuum to collect it. Then investigate to determine the source of the dust. For example, if the ductwork is not airtight, seal joints to prevent the release of dust. When inspecting the workplace for dust accumulations, consider all flat surfaces including rectangular-shaped ductwork, overhead beams, lighting fixtures and areas such as hung or suspended ceilings.