| 摘要 |
<p>PURPOSE: To easily check the failure of an ozone lamp and an ozone sensor by executing a maintenance mode by a maintenance means by operating a maintenance switch, so that the operating conditions of the ozone lamp and the ozone sensor can be confirmed. CONSTITUTION: Human sensors 4 and 5, the output of an ozone sensor 17, and a maintenance switch 27 are connected to the output of an arithemetic circuit 26. Further, power-supply display lamps 28, ozone sensor display lamps 29, ozone lamp indicating lamps 30, or the like are connected thereto. The arithemetic circuit 26 comprises a maintenance circuit by which a maintenance mode is executed in the open/close condition of the contacts, for instance, of dipping switches A to C that constitute a maintenance switch 27. In other words, a prescribed maintenance mode of the maintenance circuit is executed by the combination of the switches A to C. For instance, a human sensor check mode is obtained by the combination of the switches A and C.</p> |
