Sediment buildup in the tank bottom will create varying amounts of noise and may cause premature tank failure. Drain and flush the tank as directed under " Draining and Flushing".
内胆底部累积的沉淀物会产生变化不定的噪音，并可能造成内胆过早老化。按照“ 排水和冲刷”地说明排泄并冲刷内胆。
If you are replacing the bottom element, remove the accumulated sediment on the bottom of the tank.
如果是拆卸下部加热元件，需要清除累积在内胆底部的沉淀物。
Drain it at least once a month. Failure to do this may result in noisy operation and lime and sediment buildup in the bottom of the tank.
至少每个月要排水一次。如果没有这样做，可能会导致热水器运转有噪音，在内胆底部沉淀石灰和水垢。
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