Common issue with the fan slowing down or working was to the dust and grease started drying. And sometimes due to the damaged capacitor due to its age. Rarely due to the winding damage. Figure 1: Sharp PJS400 fan In the sharp PJS400 fan case, my friend as me to look and fix it for him. Inside Cover of Sharp PJS400? Look what is inside after opening the back cover? Figure 2: Inside the back cover of fan. Too many dust Looks like the fan has not been clean for ages. Why Important to Clean Fan? Dust usually will caused more resistant to the rotation of fan rotor. This is due the dust entering the bearing and mix with grease. Therefore, it is important to have proper maintenance interval or cleaning the blade, front case and back of the fan at regular interval.. Cleaned Fan will have less friction to rotate, less resistance, thus, less energy to rotate and help reduce energy usage...although, it is not as significant. Extra note a...
sharing about diy on vehicles, motorcycles, electrical and electronic devices