泵的轴封采用机械密封，泵体顶部和底部分别装有注水、放泄的螺塞。
Pump shaft seals use mechanical seal, pump top and bottom, respectively, equipped with water injection plug and the drain plug.
当锅内水量不足时，打开注水管顶部上盖， 从管口倒入液体水，对锅内进行补水便可。
When the steamer is insufficient in water inside, the upper cover on the top of the water injection pipe is opened, and liquid water is poured in from a nozzle so as to replenish water in the steamer.
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