Fire hydrants are fixed fire tools and should be used as follows:
Open the fire hydrant door and press the internal fire button (the button is the alarm and start the fire pump).
It is best for two people to operate and remove the fire hose. One person picks up the gun head and the hose toward the fire point.
Another person connected the hose and the valve port and connected the water source.
One person opens the valve counterclockwise, remembering to slowly unscrew and loudly advising the other person (water pressure is high, a person holding the water gun may be hit when opening the valve quickly), and the other person can hold the water pipe and the water pipe to extinguish the fire.
Note: The electric fire must be determined to cut off the power.