On the pump body, an in-boat fast opening manhole is installed on the upper of the casing. Via this hole, you can check if the impeller is clogged or worn.

• 泵体上布置了艇内快速启闭式检视孔，设置在泵壳的上方，通过该检查孔可检查叶轮是否堵塞、叶轮是否磨损等情况。