and keep close when you run it again for the first few hours. just to make sure any residual shit burns off given that condenser heats up quite hot.
i forget who said it, but they raised a very valid point about dust being a serious safety issue. apparently they had a growmie that had this big box fan, all caked in shit, in their living room. told the people they should clean it given the hazard. they didn't, a house fire ensued, and they ended up going to prison because their grow was in the house, and well, you can't very well hide a grow when the fucking walls burned down around it.
just a cautionary tale. i myself throw fans away primarily because of the dust, and will likely do the same with my dehuey when it gets to a questionable level. that'll hurt, pricey mofo, but fires are no bueno. you go through it once and never want to do it again. kinda like rolling a car.