Fire pressure switch directly from the pump is how the wiring? Ask everyone to answer
As for the two pumps with a prepared, it can be in the control cabinet, respectively, with two pumps to control the work of the relay and contactor, connected to "interlock" form, and then access the switch (which can be connected into a pump 2 Pump, or 2 pump with a pump, you can also manually open the pump function) to achieve. If it is required to contact with the fire control system monitoring signal or other equipment, it should be from the fire control center (that is, fire automatic monitoring and control equipment display, control center equipment) connected to the control signal to the required regulator pump control loop on
Pressure pump is generally connected to the fire sprinkler pipe and fire hydrant pipe on the pump, not for the main water supply, just to ensure that the water within the pipeline and set. The working mode of this type of pump is usually controlled by the electrical contact pressure gauge on the pipe. Below the lower limit of the setting range of the pressure gauge, the electrical contact of the pressure gauge is closed, the control relay is connected, and then the relay is connected So that the control of the pump contactor work (pull), automatically Kai pump pressure. When the pressure value reaches the upper limit of the setting value of the electrical contact pressure gauge, the pressure gauge disconnects the signal circuit, causes the relay and the contactor to lose power, and the pump stops working.
It is mainly in the wet alarm valve in the hydraulic alarm and the delay between the pressure switch, the signal module to the control center alarm, another alarm valve outlet on the pressure switch directly or by the module control spray pump The
