| 摘要 |
<P>PROBLEM TO BE SOLVED: To reliably perform water spray in time of fire occurrence by remotely determining that a test water control valve is reliably fully opened. <P>SOLUTION: The test water control valve 14 is provided with an opening/closing detection switch 46 turning on a switch contact at a fully opened position and turning off the switch contact at a closed side position deviating from the fully opened position, the switch contact of the opening/closing detection switch 46 is inserted into and connected to a signal line 44 from a disaster prevention reception panel 36 connected to a pressure switch 28, and a bypass resistor is connected in parallel therewith. The resistance values of the bypass resistor and a terminal resistor are varied, and the disaster prevention reception panel 36 is made to identify and notify that the test water control valve 14 is fully opened or that the test water control valve 14 is not at the fully opened position, and an on signal of the pressure switch 28. <P>COPYRIGHT: (C)2013,JPO&INPIT |
