Correct usage of dry powder fire extinguisher 1 When using a portable dry powder fire extinguisher, you should carry it and get to the fire quickly. 2. Put down the fire extinguisher about 5 meters away from the fire point. When used outdoors, it should be in the windward direction. 3. Before use, turn the fire extinguisher upside down several times to loosen the dry powder in the steel cylinder. 4. If a built-in or pressure-storage dry powder fire extinguisher is used, first unplug the safety pin, hold the nozzle with one hand and press the handle with the other hand, and the dry powder will be sprayed from the nozzle. 5. If an external dry powder fire extinguisher is used, hold the nozzle with one hand and hold the handle with the other hand, and the dry powder will be sprayed from the nozzle. 6. Put out the scattered liquid fire with dry powder fire extinguisher, and put out the fire from the side. Aim at the root of the flame, spray from near to far, from left to right, and advance quickly until the flame is completely extinguished. 7. When using dry powder fire extinguisher to extinguish flammable liquid fire in the container, aim at the root of the flame from the side of the flame and shoot from left to right. When the flame is driven out of the container, it should move forward quickly to put out all remaining fires. When putting out the fire, be careful not to aim the nozzle directly at the liquid level to prevent the impact of dry powder airflow from spilling oil, which will expand the fire and make it difficult to put out the fire. 8. When using dry powder fire extinguisher to put out a solid fire, aim the fire extinguisher nozzle at the place where the fire is the fiercest, shoot from left to right, and spray the dry powder fire extinguisher evenly on the surface of the burning object as far as possible until the fire is completely extinguished. 9, the use of dry powder fire extinguishers should pay attention to always keep upright in the process of fire fighting, do not lie down or stand upside down, otherwise you can't spray powder; At the same time, pay attention to prevent the dry powder fire extinguisher from rekindling after extinguishing, because the cooling effect of the dry powder fire extinguisher is very small, and it is easy to rekindle after extinguishing with hot substances at the ignition point. When the portable dry powder fire extinguisher is used to extinguish the fire of solid combustible materials, it should be sprayed in the place where the quasi-combustion is the fiercest, up and down, left and right. If conditions permit, the user can spray the fire extinguisher along the periphery of the combustion object, so that the dry powder extinguishing agent can be evenly sprayed on the surface of the combustion object until the flame is completely extinguished. Dry powder fire extinguishers should be visually inspected once a month, mainly to check the pressure gauge of the fire extinguisher. When the pressure gauge pointer is lower than the green line area, it should be pressurized for maintenance immediately. The newly purchased ABC dry powder fire extinguisher tank is subjected to five-year water pressure test 1 time, and after the first test, it is subjected to water pressure test 1 time every two years, and the mandatory scrapping period of the tank is 10 year.