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I went to Qingbaijiang again yesterday for a business trip. The customer described that the fan had abnormal noise. The customer didn’t know what the specific fan was. Let us check it and deal with it by the way. After the on-site inspection, it was determined that the problem was the transformer itself. The rubber sleeve inside the cooling fan is rotten, which makes it impossible to contact the motor, and it will cause abnormal noise when it is running, but this actually has no effect.
After the fan was replaced, when checking other problems in the box, it was found that a circuit fuse of the capacitor compensation cabinet was blown. After a closer look, it was found that the burned-out phase screw was not opened [aru_39]
Since this is a problem discovered during a temporary inspection, I have not brought spare parts with me for the time being, and I will only replace it next time, but it will not affect the use of other circuits.
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