Today explain, when using "220V Cooling Fan" matters should be noted, is the use of forced cooling fan thermal convection cooling, which by virtue of their diversion effect, making the air to a certain speed, a certain way through the heat sink. "220V Cooling Fan"take advantage of the heat exchange between the air and the heat sink away the accumulation of heat, so that" forced convection "cooling mode. When handling or operation, such as the fan falling from the height of 1500px, will have some impact on the balance of "220V Cooling Fan" of the blade, especially ball bearings to avoid falling.