There’s a small fan on the top of the C3D VFD. Should it run continously, or is it controlled by internal temperature?
Mine seems to go on and off with internal temperature. I noticed it running quite a bit this past summer and only occasionally lately.
I keep wondering if it should have a filter on it, or if there should be some maintenance schedule for cleaning out dust and such.
I’ve been considering something like this. I used them on my offroad vehicles for years to keep the air filters from loading up.
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