Instructions for in-depth cleaning (no disassembly of the disc drum required):
I have been using this Xiaomi SmartMi Evaporative Humidifier 24h for 1 year and 3 months and I am satisfied, but in the end I got so stoned that it stopped working properly. Especially that my water is self-pouring and after 8 weeks it is concentrated at about 1:60, which results in accelerated calcification to the power of
.Symptoms:
- false alarms of zero water level (which results in stoppage) and that "cover removed" which also stops work. Not to mention that false alarms happen at night when we suddenly get awakened by the chirping of our cell phone
- rotation of the disc drum a quarter turn to the right, after 5 sec. change of the direction of the drum rotation - and so on and on, with temporary stoppages. You can see what it was like for me
* I will add something that has not happened to me, but:
- causes complete and irreversible stoppage of operation due to burnout of the electronic water level measurement module (electronic board, not its physical part, which can be easily removed from the bottom tank). Here, only a visit to an authorized service center (CCS Warsaw) and module replacement, although for those who have a version straight from China, even this service is unattainable - they do not accept it. I will mention it at the end, how to bypass this blockage yourself by forcing the indication of the water level, so that the humidifier is not thrown into the garbage.
In the instructions received with the humidifier, there is talk of a weekly cleaning of the interior, possibly disassembling the drum and washing (very laborious), in addition, such simple washing does not remove the build-up of scale, even with Domestos Zero or 10% vinegar, if there is more of it. Nowhere on the Internet there is no way to get rid of the stone yourself, not to mention the instructions for dismantling or on the forum, and even on the Internet, although in the end I found the movie somewhere on the 3rd or 4th page of the search engine, with the entry in English.
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1.Buy KAMIX powder, 1 kg, from Kamix / shop or Allegro
2.Disassemble the humidifier according to the movie instruction in order to take out the small, petrified plastic gear (drive, on the axis of the motor):
3. dissolve KAMIX in warm water with a temperature of approx. 50 degrees C in the ratio of 0.5 kg: 5 l. water (1:10). There may be a small plastic bowl to allow the drum to be inserted up to the level of the solution slightly above the centerline of the drum
4. put a toothed wheel into the bowl. Place the disc drum in the bowl for 5-10 minutes. (we will notice immediate foaming). After 5-10 min. remove the toothed wheel from the bowl (if it is already free of scale), and at the same time turn the drum 180 degrees to descale its other part.
Note: the solution, although extremely effective, is not corrosive, although slightly irritating to the eyes and lungs. It is best to use rubber gloves.
5. Pour the remaining Kamixu solution into PET bottles (for this amount of limescale is still active) for a typical weekly wash interiors (soapy water) i the drum if a limescale is visible (Kamix, for 30 sec / minute). I personally clean the interior every 2 months, but when I use the Ag + silver electrode, which is lying on the bottom.
After assembling, at first I had false positives for a while, but then they disappeared. The humidifier is like straight from the store again, it works flawlessly. Until the next in-depth cleaning combined with dismantling, in a year.
best regards
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PS.
The case of burning the plate and forcing the water level to operate with a level emulator (although artificial, 5 lamps, but allowing the humidifier to start working again), this is the idea of Tomas Vilda "Xiaomi SmartMi Humidifier water level sensor emulator":
https://i.imgur.com/yUf0Oiw.jpg
https://www.youtube.com/watch?v=Pm4rbp3xFk0
The ATTiny85 modulik to bypass the electronic circuit can be purchased on Aliexpress for $ 1.
The plates and gears twisted into eighth notes and they are useless. I tried to straighten them with a heater, but that only made matters worse.