Look startup performance start performance advantages and disadvantages are "220V Cooling Fan" is an important indicator of quality. Inspection, should be adjusted in a slow gear, and start fan in the power supply 85% of rated voltage, namely with the regulator down to 187 volts to 220 volts, the electric fan should phoenix from a standing start, and the normal operation, A fan from the start to the shorter the time required for the normal operation, start-up performance "220V Cooling Fan" of the motor as possible. See activity part of the performance fans fan head stoop, Yang each angle flexible operation, reliable locking, adjusted to the maximum depression or shake his head to the final position, grille shall collide with fan pillars. When "220V Cooling Fan" operation, better stability, not dumping, shaking his head angle of not less than 60-80 degrees.