Final answer:
Fire extinguishers should be checked on a monthly basis to ensure they are in working order. Annual maintenance should also be performed by a qualified technician to inspect and test all components of the extinguisher.
Step-by-step explanation:
In order to determine how often a fire extinguisher needs to be checked, it is important to follow the guidelines set by the National Fire Protection Association (NFPA). The NFPA recommends that fire extinguishers be inspected on a monthly basis to ensure they are in working order. This inspection involves visually checking the extinguisher for any signs of damage or leakage, verifying the pressure gauge is within the proper range, and ensuring the pull pin and tamper seal are intact.In addition to monthly inspections, fire extinguishers should also undergo an annual maintenance check performed by a qualified technician. This thorough examination involves inspecting and testing all components of the extinguisher, including the valve, hose, and nozzle. The technician will also weigh the extinguisher to ensure it is still within the recommended weight range, and recharge or replace it if necessary. It's important to note that these recommendations may vary depending on local regulations and industry standards, so it's always a good idea to consult with your local fire department or a fire safety professional to determine the specific requirements for checking fire extinguishers in your area.