I purchased a silicon grease (it comes in a syringe with a needle). Good stuff. First I tested it on an old computer fan, which became very noisy. I suppose it’s bearing was ruined due to extremely long period of work. Anyway when I added some grease inside it, the fan became perfectly silent! This grease works like magic.
Then I decied to do the same thing with the two fans inside P3. I had to spend some time to figure out how to take them out. I must say the internal design of P3 impressed me. It is quite simple, yet beautiful and effective.
Unfortunately it seems like the fans did not like the grease. I’ve been adding little by little while rotating them manually, but it did not seem to work. Than I decided to put them back into P3 and let them work for some time. I turned P3 a few times while it was spinning the fans at their max speed. But it did not help. One of the fans is still making that noise, which sounds like a cricket. It is especially obvious at low RPM, which is the usual way of their operating. The lubrication did not change the noise at all. Maybe I need to wait sometime, until the grease disperses.
So it looks like I have to replace at least this one fan. The problem is I have not found such at my local shops. But the are other models, like:
- Jamicon JF1225-2E (1500 RPM, 48 CFM, 20,4-27,6 V, 0,08 A)
- Jamicon KF1225-2L (1500 RPM, 56 CFM, 20,4-27,6 V, 0,08 A)
I am not sure if any of these may replace current XFan RDL1225B2 (1700 RPM, 60 CFM, 12-27,6 V, 0,13 A), because Jamicon fans support higher voltage (20+ V), while stock XFan fans can operate starting at 12 V. I think I will contact with customer service to make sure what voltage (range) the P3 itself supplies to the fans. I believe it is dynamic, as the speed of the fans may change.