csaba81 Posted March 2 Share Posted March 2 The blades keep slowing down to the point where i can nearly count the revolutions and then speeding up back to normal. After it started happening i took apart the fan and did a clean and lube. Improvement for a day or two but behaviour now back exactly as before. If the problem is a bearing in the fan i would expect a constant speed and some mechanical noise. Can the power in the building be the culprit? It's a modern block of units. I don't notice lights dimming or any fluctuations in supply. Link to comment Share on other sites More sharing options...
Popular Post johng Posted March 2 Popular Post Share Posted March 2 Try changing the capacitor. 1 2 Link to comment Share on other sites More sharing options...
flyingtlger Posted March 2 Share Posted March 2 12 minutes ago, johng said: Try changing the capacitor. The "Flux Capacitor"? 1 2 Link to comment Share on other sites More sharing options...
Peterphuket Posted March 2 Share Posted March 2 46 minutes ago, csaba81 said: The blades keep slowing down to the point where i can nearly count the revolutions and then speeding up back to normal. After it started happening i took apart the fan and did a clean and lube. Improvement for a day or two but behaviour now back exactly as before. If the problem is a bearing in the fan i would expect a constant speed and some mechanical noise. Can the power in the building be the culprit? It's a modern block of units. I don't notice lights dimming or any fluctuations in supply. As 'johng' said it must be a capacitor from about 4,uF and is mounted at the motor. 1 Link to comment Share on other sites More sharing options...
Crossy Posted March 2 Share Posted March 2 Yeah, first port of call would be the capacitor. Small fans are about 1.8uF, make sure you get a proper "run capacitor", they are really cheap on Lazada/Shoppee. It's also worth checking your supply voltage (you can't rely on lights dimming as an indicator these days). 1 1 Link to comment Share on other sites More sharing options...
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