| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a floor working machine including a collection tank, a squeegee connected to the collection tank, and an electric vacuum pump for sucking air of the collection tank, wherein the vacuum pump is accurately prevented from sucking a collected object, irrespective of the characteristics of the collected object, while preventing an increase in size of the collection tank and securing a desired collection amount. Ž<P>SOLUTION: The floor working machine has a capacitance sensor 20 for detecting the full capacity of the collection tank 5. The capacitance sensor 20 has a sensor electrode 22 provided from a full capacity level L of the collection tank 5 to a level higher than the full capacity level L. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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