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农用550W或750W单相清水电泵最忌空转。如果不加引水就让其空转3～5分钟,准会将水泵的水封磨热损坏,造成漏
Agricultural 550W or 750W single phase water pump most likely to idling. If you do not add water to let it idle for 3 to 5 minutes, will pump water seal heat damage, resulting in leakage