1. "24V DC Cooling Fan" bigger than the specified capacitance will cause the motor operating current is increased, it is easy to use because of overheating the motor. If the capacity does not exceed 15% of the original capacity can still be used.
 2. "24V DC Cooling Fan" small capacitance change: 2.5UF now changed to 1.2UF, can be used, in which the error is smaller torque, speed decreases. Replace the small capacitance can start the fan, that is, people often say little horse-drawn carts, the capacitor life impact, the impact on the motor that should start up in 30 seconds "24V DC Cooling Fan" because you replaced small capacitors may take one minute to start up, imagine the motor heat. Life will be shortened. Capacitance is used to start the motor, the pace is by the governor to control the size of the current. I'm talking about the heat because you replaced the small capacitance caused by "24V DC Cooling Fan" motor starter prolonged heat generated. Long impact on the motor. We recommend that you do not change too small is the reason.