| 摘要 |
<p>When it is judged that an abnormality occurs to an electric dust collector (1) in step S2, it is then judged whether the abnormality intermittently occurs a predetermined plurality of times or more within a predetermined second measuring time in step S3. If the judgment in step S3 is affirmative, the supply of high voltage electric current to one pair of opposing electrodes ofthe electric dust collector (1) is temporarily stopped in step S5, and after the passage of a first standby time, the supply of high voltage electric current to the one pair of opposing electrodes is resumed in step S7. If the judgment in step S2 is negative, it is judged whether or not the abnormality of the electric dust collector (1) is continued during a predetermined first measuring time in step S3. If the judgment in step S3 is affirmative, an abnormal time procedure is carried out with respect to the electric dust collector 1 in step S4. <IMAGE></p> |
