1, the pressure switch and the flow indicator alarm with the control room through the host (automatic) to start the spray pump?
If so, the three modules is not set in the host between the logical relationship?
2, the fire occurs, the general is waiting for the pressure switch action automatically start the spray pump, or the central control room to start manually, it is in the central control room between the straight panel is what is the relationship between?
Automatic sprinkler system in the pressure switch, the control room and the relationship between the three spray from the action of the linkage.
The pressure switch is always in the normal state.
Only in the linkage in the control room and spray pump at the same time in an automatic state, will be linked to the pump.
In the fire control center was 24 hours on duty, the linkage in the control room in a manual state.
Pump station main pipe installed relief valve, when the pressure exceeds the safety settings, will automatically open valve pressure relief, drainage to the fire pool. So the pipe will not burst over pressure.
After the nozzle action, should be directly connected by the pressure switch automatically start the water pump. Pre-action system, rain system and automatic control of the water curtain system, the fire alarm system should be automatically alarmed immediately after the water supply to the distribution pipeline.
The control room should be able to show the water flow indicator, pressure switch, signal valve, water pump, fire pool and water tank level, pressure gas pipeline pressure, and power and standby power is in the normal state of the feedback signal, and should be able to control the pump, Valves, electric valves and other operations.
In the wet system wet alarm valve on the back of the nozzle action, the system test debugging water or pipeline leakage, etc., through the wet alarm valve part of the flow from the wet alarm valve valve chamber to the delay device; once the delay device filled with water, Hydraulic alarm action, while the pressure switch to send the action signal.
When a fire occurs, the shower head blasting, water flow indicator action, the pressure switch action, the feedback signal back to the host, the host linkage Kai spray pump. When the host is in the linkage state, the pressure switch is generally the action, but can not start the pump, the artificial hard to start the spray pump
1, the pressure switch is directly to start the spray pump, the flow indicator is just to provide a nozzle action signal to the fire alarm controller. (Because it is automatic sprinkler system), even if there is no fire alarm controller, itself can start the spray pump. Pressure switch is a hard start directly connected to the spray control cabinet, there are pressure switch is a double contact, the other contact fire alarm system alarm signal. The flow indicator and the pressure switch do not have a logic to start the spray pump. The host to get a remote pump can send a pump can be manually start the spray.
2, manual confirmation of fire, can be directly through the fire alarm system to start spraying
