
Firstly, adjust the power supply on the 24v condition. When the current flow, the system and pump will be at off operation. At the same time, led 1 and led 2 will be bright.
Press the switch 1, the system become on condition ,then the led 1 and led 2 will turn off and a led 4 will turn on. Holding switch 1 and press the switch 2 together, the pump will started functionally.
At the same time, the led 3, DC motor and valve will be functionally together also.