Start capacitor size can be changed only "Micro Cooling Fan" startup speed of size. Do not believe it, you can look at the role of the capacitor in the search. Once the fan is started up once the capacitors discharge capacitors only play the role of isolated DC. Will no longer participate in the operation of the fan. Only because the capacitance charging and discharging functions. To determine if "Micro Cooling Fan" capacitor failure can teach you a simple method. If the fan does not turn on the fan switch turn, hand clockwise "Micro Cooling Fan" If you can successfully start, then start capacitor has proved breakdown. There is only used in the two-phase capacitors in power. The three-phase motor can not depend on a change in capacitance start faster.