| 摘要 |
A dishwasher is provided. The dishwasher has a wash motor for pumping wash liquid, upper and lower spray arm for spraying the wash liquid pumped by the wash motor, and a control unit. The control unit operates the wash motor to perform a lower wash cycle by the lower spray arm and an upper wash cycle by the upper spray arm. The control unit operates the wash motor at a preset first rpm and operates the wash motor at a second rpm for a predetermined duration during the upper wash cycle.
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