How to choose an electric fan?Heater Fan sales

　　1. Check whether there is leakage of electricity After the fan is powered on, if there is a strong hemp inductance when the hand touches it, use a test pen to test it, and the test pen will also glow and display, which can determine that the casing is leaking and cannot be used. Look at the start-up performance The start-up performance is an important quality indicator of electric fans. During the inspection, it should be adjusted to the slow gear, and when the rated voltage of the power supply is 85%, that is, the electric fan should be started when the voltage regulator reduces the voltage from 220 volts to 187 volts. The electric fan should be able to start from a standstill and operate normally. The shorter the time required for an electric fan to start to operate normally, the better the starting performance of the fan motor.

　　2. Look at the performance of the movable part. The fan head of the electric fan runs flexibly at various angles of elevation and elevation, and locks firmly. Adjust to the large depression angle or shake the head to the final position, and the grille shall not touch the fan prop. When the fan is running, the stability is better, and it cannot be tipped over. The angle of the head should not be lower than 60-80 degrees. Look at the random documents. The random documents of each electric fan include the instruction manual, product certificate, electrical circuit diagram and packing list. When purchasing, check and check the quantity and quality of parts and components according to the packing list.

　　3. Whether the grille and fan blades are obviously deformed On the assembled electric fan grille, use a pen to point to a high point of the fan blade, slowly move the fan blade, and the distance between the corresponding points of the other fan blades and the tip of the pen It should be very close, and then turn the fan blade, pay attention to observe whether the rotation is brisk and flexible, and can stop at any position. See if the control mechanism is flexible. The control mechanism includes speed control switch, timing knob, rocker switch, lighting switch, etc. These control mechanisms should be flexible in operation and reliable in contact. For the speed control gear, it is not allowed to have two gears connected at the same time or the phenomenon that the first gear cannot be pressed. Press the stop button, and each speed gear button should be reset normally.

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