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1. Use an extended Phillips screwdriver to remove the four screws from the inside and separate the two parts of the machine housing.
2. Do not break the upper case circuit board. There are two buckles on both sides of the upper case. Use a flat-blade screwdriver to gently pry it out and slowly pull it outward to remove it. the case.
1. First disconnect the power supply and make sure the fan stops working. You need to unscrew the screws and release the buckle.
2. Then use the corresponding tools, wrenches and screwdrivers to loosen the fixing screws connecting the wind wheel.
3. Finally, be careful when disassembling the wind wheel to avoid damaging the fan and other circuit components.