Indoor use
1. Open the fire hydrant door and press the internal start pump alarm button (the button is to start the fire pump and alarm);
2. One person picks up the gun head and the water belt and rushes to the fire point;
3. Another person connects the other end of the hose to the aluminum port of the bolt;
4. Open the valve counterclockwise and spray it out. Note: The electric fire should be determined to cut off the power.
Outdoor use
1. Open the water bag mouth connection switch of the underground fire hydrant with a wrench;
2. Connect the fire hoses;
3. Open the outlet valve switch of the underground fire hydrant with a wrench;
4. Continuous water hose mouth and water outlet gun head;
5, at least two people holding the spray gun head, spray water to the fire source until the fire is extinguished.