【 Weak current College 】 my commonly used fire extinguishers and their purposes and what is the use?---Power By 【 China power house network 】

Currently there are four commonly used fire extinguishers. They are the foam fire extinguishers, fire extinguishers, fire extinguishers and fire extinguisher "1211". Foam extinguisher suitable for fighting oil, flammable liquids and flammable solid beginning of fire. Use the fire extinguisher bucket lid down so that the bottle of liquid tank and the tank mixing of liquid, foam from the nozzle. Dry chemical fire extinguisher suitable for extinguishing the flammable and combustible liquids, high-voltage electrical and combustible solids and other small area beginning fire. When the use of hand-held fire extinguishers are referred to the distance from the fire source, select the appropriate good wind, a handheld nozzle at the fire, the other up lifting cylinders on the ring, powder from the nozzle.　　Before use, it is best to move up and down fire extinguisher reversed several of deposition of dry powder, dusting, alignment around horizontal blast, fire, fast forward. Carbon dioxide fire extinguisher suitable for extinguishing book archives, valuable equipment, precision instruments and electrical equipment for the beginning fire extinguishing water substances, jiyong and flammable liquid fires. When you choose to use a good distance and direction of the hand grip spray tube at the fire, the other left turn on the switch, you can emit carbon dioxide. 　　If it is a duck-billed-switch, hand-drawn to insurance sales, hold spray cans, the other-hand will duck beak down pressure. "1211 fire extinguisher suitable for extinguishing" oil, flammable liquids, flammable gases, high-voltage electrical, precision instruments, archival materials and precious equipment beginning fire small area. "1211 fire extinguishers are portable and" trolley. Using hand-held fire extinguisher to put out the fire, the nozzle at the fire, choose good wind direction and distance, hand grip pressure, valve is opened, the gases emitted. If the valve has a safety pin, first unplug the safety pin.