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Time：2021-08-04Views：0
There are abnormal noises and abnormal noises in the cooling fan. Many customers have responded to this problem. Therefore, there are many reasons for the abnormal noise of the cooling fan, which is basically the quality problem of the cooling fan itself. But there are exceptions. The installation of the cooling fan also has a backhand that can cause abnormal noise.
The black wire of the cooling fan in the picture above is outside the wire trough. Therefore, the black wire will be higher than the other wires and higher than the plane that runs through the bottom frame. When the label of the cooling fan is fixed against the cover panel, lock the screw. When this point is raised by the wire bump, when the screw hole below is locked, it will pass through the plane, from the position of the wire to the opposite corner from high to low, so the motor will naturally bulge. The leaves were raised along the way, beyond the other side of the outer frame, and hit the cover panel, causing abnormal noises
For this kind of problem, for a cooling fan with a relatively large leaf and close to the edge of the outer frame, if the first screw is locked with too much force when the lock screw is fixed, the outer frame will be deformed if the other three screws are locked in one step. The high side is low, which will cause the fan blades to scratch the inside of the outer frame and produce abnormal noise. The correct way is to do not fully tighten the first screw, leave a little space, and then lock the diagonal screw, and then lock the other two. Finally, lock the first one
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