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The common controller for fire pump is fabricated from mild steel and epoxy powder coated to red color and have all the required controls complying with the applicable standards (NFPA).
Manual starting: If set up for the”Manual”position with the black 2# three-way switch on the control panel mode,That you can use “Manual” start button and “Manual” stop button to control diesel engine pump start or stop. when the black three-way switch to the”stop”position,diesel pump can’t work.
Automatic starting: If set up for the”Auto”position with the black three-way switch on the control panel mode,it will receives an effective fire alarm signal to control diesel pump start or stop. Through the pressure controllers on the common outlet pipe to achieve pressure control.First, use two 1” 1.5 square signal lines to connect between the pressure controller normally open contacts and the control cabinet’s terminal No. 111 and 127. Then, set a low-value and high-pressure for pressure controller to achieve low-voltage to start pump and high-pressure to stop pump. Last,if the electric main pump is overload,the diesel engine pump will start.