The first step: open "220V Cooling Fan"
There are two small screws, tighten them down, close to the outlet side of the cooling fan on the loose. Gently break apart the metal buckle cooling fan, the fan side of the cover can be opened, pay attention not to break apart snap angle is too large, so as not to lose elasticity, put back when the card is not tight.
Step two: Open the "220V Cooling Fan"
Internal fan is appalling, all kinds of dust clouds, especially on the cooling fan blades is accumulated a thick layer.
Step Three: Clean fan
In a simple brush again with a brush after the ups and downs, we suggest that you use a paper towel or cloth dampened with water carefully wipe it again fan blades, it is best not to use some organic solvent, because that can easily lead blades and their parents and, at high temperatures bake easier to make blades brittle, accelerated aging, the water is more reliable.
STEP 4: "220V Cooling Fan" add oil
After careful patient clean, fan look. The central axis of the cooling fan after a drop of lubricant, before using open approach and reassembled back on the line.