"Micro Cooling Fan" long-term use will make the more you use the greater voice of the fan, the main reason is that the oil bearing fan sucked dry break a lot of noise and dust, the fan stator and rotor produced during the turn. Then we use the tool first wash the dust inside and remove the fan behind the label, and then remove the fan inside the collar, shake "Micro Cooling Fan" Let blades fall, clean the inside of the dust, cleaning is completed, again on some oil to the stator mounted fan, the placement of the snap ring, net fans came back to the quiet. In this process, do not ruin the snap ring, because the individual fan has only one snap ring, snap ring would not be able not fixed blades, "Micro Cooling Fan" not functioning.