Abnormal noise in the pump. Pump could not suction water.
水泵内部声音反常，水泵吸不上水。
Pay attention to if there is vibration and abnormal noise.
注意运转时有无振动，异常响声。
And abnormal noise will appear if sponges are jammed by dust.
消声海绵被粉粒堵塞，会出现不正常的噪声。
And abnormal noise will appear if sponges are jammed by dust.
消声海绵被粉粒堵塞，会出现不正常的噪声。
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