Steps to Use a Fire Extinguisher (PASS Method) P: ull: Pull the safety pin at the top of the extinguisher. A: im: Aim the nozzle or hose at the base of the fire, not the flames. S: queeze: Squeeze the operating lever to release the extinguishing agent. S: weep: Sweep the nozzle from side to side, moving forward as the fire diminishes. Basic Fire Extinguisher Types & Uses Class A: For ordinary combustibles like wood, paper, and cloth. Class B: For flammable liquids, such as gasoline and oil. Class C: For electrical fires, like those involving appliances and wiring. Class D: For flammable metals, typically found in industrial settings. Class F (or K): For cooking oils and fats, commonly in kitchens. Multipurpose (ABC): A versatile type that can handle fires involving ordinary materials, flammable liquids, and electrical equipment.