Lubricated bearings
"220V Cooling Fan" transport the most important parts is bearing a long time the lack of oil, will generate noise such high-speed rotation. Therefore, we only need a few drops on the fan bearing lubricant, sewing machine if you do not use to be replaced. But be careful, do not use oil instead, because of its relatively large particles, easy to damage the bearings.
Fixed blades
Vibration noise is also a "220V Cooling Fan" an important part of the noise, because the leaves loose in the bearing and bearing wear resulting in the gap becomes larger and so, so only need to remove the sub-sector, the screws tight button, so firmly fixed after , it will not shake.
Polished blades
In addition the use of poor quality "220V Cooling Fan", in the production of this type of fan due to defects in workmanship, the center of gravity may not be in the blades of the axis, forming a "eccentric" and use over time, fans of "eccentric "phenomenon will become more serious, it will not only produce noise, serious damage may also CPU. In this regard, can be removed altogether, and then thread hanging from its center position, let it sink still to see which direction to put an end to sink in light grinding a few times, and then tested, has been After the fan can be installed in a horizontal position and then go to.