How To Choose A Good Electric Fan

Look at the attached documents. The attached documents of each electric fan include the operation manual, product certificate, electrical circuit diagram, and packing list. When purchasing, check the quantity and quality of parts according to the packing list.
Check whether the net cover and fan blade have obvious deformation. On the assembled electric fan net cover, point a pen to the highest point of a fan blade, slowly move the fan blade, and the distance between the corresponding points of other fan blades and the pen tip should be very close, then rotate the fan blade, pay attention to whether the rotation is light and flexible, and can stop at any position.
See whether the control mechanism is flexible: the control mechanism includes a speed control switch, timing knob, shake head switch, lighting switch, etc. These control mechanisms should be flexible in operation and reliable in contact. For speed control gear, it is not allowed that two gears are connected at the same time or one gear cannot be pressed down. Press the stop key, and the speed shift keys should be reset normally.
Look at the performance of the movable part: the fan head can operate flexibly at all angles of pitching and pitching, and it can be locked firmly. Adjust to the maximum pitching angle or shake the head to the final position, and the net cover shall not collide with the fan pillar. When the fan is running, it has good stability and can’t topple. The shaking angle should not be less than 60-80 degrees.
Starting performance: starting performance is an important quality index of an electric fan. During the inspection, it should be adjusted to the breeze gear, and the electric fan should be started when the rated voltage of the power supply is 85%, that is, the voltage regulator is used to reduce the voltage from 220 V to 187 v. the electric fan should be able to start from static state and operate normally. The shorter the time from starting to the normal operation of an electric fan, the better the starting performance of the fan.
Look at the performance of the operation and speed regulation: after power on, rotate the shaking head switch back and forth several times to check whether it is out of order or the assembly is too tight. In this process, there should be no abnormal noise in the mechanical transmission part of the fan. When the electric fan is running in micro, medium, and strong wind, the motor and fan blade should be stable, with small vibration and low noise. The fan should shake and stop quickly without intermission, stagnation, and shaking. The speed difference of each gear should be obvious. The larger the air supply angle, the better. When the fan stops, the axial clearance of the shaft is not more than 0.5cm. If the clearance is too large, it will cause axial movement and impact sound.
Check whether there is leakage: after the electric fan is powered on, if the hand touches a strong inductance, use the test pen to test, and the test pen will also light up, which can determine the leakage of the shell and cannot be selected.

Related Electric Fans

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A wall fan is a small electric fan mounted on a wall for the purpose of saving space.

How to use an electric fan

How to store electric fans

What is a electric fan

An electric fan is referred to as a fan. It is a kind of use of an electric motor to drive the fan blade rotation, to accelerate the air circulation of household appliances, mainly used for cooling and air circulation.

Electric fan type

Single-phase capacitor
single-phase shaded pole.
three-phase induction.

Common Faults Of Electric Fan

The fan shaft is to ensure that there is lubricating oil, otherwise, the fan blade on the top of the motor can not drag.