| 摘要 |
PURPOSE:To make maintenance easy by providing the action detecting means of a protecting means and distinguishing a state due to imperfect setting of a door from an abnormality detection state due to cutting of the electrode wire of an electric charge part. CONSTITUTION:A relay contact 7 is turned on by turning on an operation switch. When the opening and closing of a door are imperfect and a protection switch 2 is turned off, voltage is not impressed to an electric charge part 4 and both the action detection signal of a protecting means and an abnormality detection signal are made to H and a luminous LED is flashed after the elapse of a prescribed time. Therefore an air cleaning function is actuated by making the protection switch 2 to an on-state. On the other hand, when abnormality is caused in the electric charge part and only the abnormality detection signal is made to H, the relay contact 7 is turned off after the elapse of a prescribed time and the luminous LED is flashed with a different pattern and this state is continued until a power source is cut and maintenance is performed. Therefore both an objectionable point and judgement of a measure therefor are extremely made easy. |
