Following manufacturer's instructions, check the pressure in your extinguishers once a month. Using your Extinguisher Stand about 6 feet from the fire and follow the four-step PASS method to extinguish the fire. If the fire does not go out immediately, leave the area at once. Even if the fire does go out, you should still call the Fire Department. P ull the pin out to unlock the operating lever and allow you to discharge the extinguisher.
Some extinguishers have other devices, such as a lock latch, that prevent inadvertent operation.
A im low, pointing at the base of the fire. S weep the nozzle from side to side at the base of the fire until the flames appear to be out. Watch the fire area. If the fire re-ignites, repeat the process. You have the proper extinguisher, and it is in working order.