In the hot summer, industrial large ceiling fans play an unparalleled role in our lives. However, large ceiling fans will also fail after a period of use. The most obvious is that the speed of the ceiling fans is slow. There are many reasons for the slow speed of the ceiling fan, but there are four main reasons for the summary.
1. The governor is broken
If it is new, it may be that the ceiling fan governor is broken.
2. Bearing lack of oil
If the fan bearing is short of oil, you can add some oil (use butter). If it is short circuit between the turns, if the motor overheats, it should be re-wound. The bearing problem is judged whether the bearing has a problem can listen to the sound, the bearing has a problem called professional maintenance personnel maintenance
3. Capacitance capacity drops
Most household appliances are powered by single-phase power supplies, but electric motors must have two or more phases of power supply. What should I do? Designers have long thought of it. In single-phase circuits, parallel ones. Capacitance, because the large capacitor has a hysteresis effect on the current for the AC power supply (the circuit with the capacitor is 90 degrees after the circuit current without the capacitor), so that the original one-phase input becomes two-phase, and the motor can work normally. . The household appliances we use (single-phase) are all based on this principle.
Capacitance capacity becomes small or oil-free friction is large or short-circuit between turns, the capacitance value becomes smaller, and the capacitance value can be appropriately increased, but it cannot be too large, otherwise the motor temperature rises and affects the life of the motor. This is a synchronous motor. The speed is determined by the frequency of the power supply. If it is not loaded with 100 turns, it will be 100 turns after loading the blade. If you install a few more leaves, the load will be too heavy, the motor will not start, and the spring will repeat the help. start up.
In addition, the slow speed is not necessarily a problem of capacitors and bearings. The capacitor is to ensure that the fan can rotate in the pre-rotation direction. Check if the blades are deformed and the wind surface is reduced, which will affect the air volume. Also check if the governor is not in good contact, so that the gear is in the low position.
Technical support: 哲商科技