| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems with a conventional automatic washing machine that the switching of a water feed and a hot water feed is not possible and therefore washing is often carried out by water alone. SOLUTION: A water feed electric signal in washing and a water feed electric signal in rinsing are fetched from the automatic washing machine and a solenoid valve is activated, by which the water feed is automatically switched to the hot water in washing and to the water in rinsing.
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