“Mine is making a loud screeching sound, no matter what setting it is on. I have no idea how to fix this, and the company hasn't responded to my emails.”
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So I have found out that that screech noise is due to the bearings being dry of grease so its basically wearing itself out..the company does not disclose ANY information about dry bearings (they are located in the small circle of the fan face). It is tricky and risky to dismantle the entire fan blade face. I had to get help in removing the covers without popping plastic everywhere. Just a few days ago I unscrewed every corner of the 110S cooling unit and found out that unscewing the whole body does not do anything except help eliminate the motor from dust and debris...and when I got to the front fan face and popped off the gray and black small center circle i noticed clumps of grease bellowing out of that circle...grease keeps things from having too much friction...during my clean mode state of I mind, I just blew over any physics lessons in my head that parts that rotate need lubricant so that they dont wear out faster... All in all. If you hear that persistent howl or loud screech as if someone was shoving a wooden plank across a black board. Turn off the Luma completely and wait until you find proper grease like bike chain grease or white lithium grease to get those bearings going normally. I also suggest doing a thorough cleaning of the unit too as you will see a big big increase in air flow once that
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