Common maintenance misconceptions and correct practices for fans
Mar 05,2026
In the daily maintenance of fans, many users have misconceptions that not only fail to maintain the fan, but may also shorten its lifespan and even pose safety hazards. One common misconception is to "wipe the motor directly with a damp cloth": the motor is the core component of the fan, which contains precision structures such as coils and bearings. When wiping with a damp cloth, moisture can easily seep into the interior of the motor, causing short circuits in the coils, rusting of the bearings, and leading to electric leakage or motor burnout. The correct approach is to first cut off the power when cleaning the motor, and gently brush off the dust on the motor housing and heat dissipation holes with a dry soft bristled brush. If the housing has a lot of oil stains, you can first use a dry cloth dipped in a small amount of neutral cleaning agent to wipe it off, and then dry it with a dry cloth to ensure that there is no residual moisture.
The second misconception is "ignoring the balance problem of the fan blades": some users only wipe the surface of the fan blades when cleaning, ignoring the accumulation of dust on the edges or back of the fan blades, resulting in the center of gravity of the fan blades shifting when rotating, causing vibration and noise, which will worsen the wear of the motor bearings in the long run. The correct approach is to thoroughly wipe all surfaces of the fan blades when cleaning, ensuring that the dust on the surface of the blades is evenly removed; If the fan blades are deformed or cracked, they should be replaced in a timely manner to avoid affecting the operation of the motor due to balance issues; When installing the fan blades, ensure that the fixing screws are tightened and the fan blades are firmly connected to the motor shaft without looseness.
The third misconception is "not replacing lubricating oil for a long time or using the wrong lubricating oil": motor bearings require lubricating oil to reduce friction, but some users believe that fans do not need to be refueled, or they casually use engine oil, edible oil, etc. instead of specialized lubricating oil. Long term lack of oil can lead to severe bearing wear and increased noise; Wrong lubricating oil (such as edible oil) has high viscosity and is prone to deterioration, which can block bearings and affect motor rotation. The correct approach is to add specialized lubricating oil (such as sewing machine oil or motor specific lubricating oil) to the motor bearings every 6-12 months. When adding, only 2-3 drops are needed to avoid excessive oil spills; If the bearing is severely worn, it needs to be replaced in a timely manner.
The fourth misconception is "not protecting the fan when it is idle": many users place the fan in a corner without any protection after the season changes, resulting in dust accumulation and parts rusting due to moisture. The correct approach is to thoroughly clean the fan blades, protective net, base, and other components before leaving the fan idle. After drying, wrap it with a dust cover or plastic bag to prevent dust from entering; Store in a dry and ventilated place, away from humid environments and corrosive substances; If it is idle for a long time (more than 1 year), it is recommended to regularly power on and run for 10-15 minutes to lubricate the motor bearings and prevent the coils from getting damp.
Misconception 5 is "disassembling the motor for repair on their own": Some users may disassemble the motor for inspection when encountering motor faults (such as non rotation or abnormal noise). Due to a lack of professional knowledge, it may damage components such as coils and bearings, and even pose a risk of electric shock. The correct approach is to first cut off the power when the motor malfunctions, check for simple problems such as loose screws or lack of oil, and if they cannot be solved, contact professional maintenance personnel for inspection. Do not disassemble the internal structure of the motor by yourself.
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