| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize an air pump device capable of corresponding to a sewage cleaning tank having various operation patterns. SOLUTION: A memory means for storing a plurality of operation patterns and a selection means for selecting these operation patterns are provided to a control unit and respective data, that is, air amount data at the time of aeration, air amount data at the time of backwashing, backwashing start time data and backwashing finish time data are stored in the memory means as a data group at every operation pattern and operation is controlled according to the data group of the operation pattern selected by the operation pattern selection means.</p> |
