Should car fire extinguishers be replaced annually?
2 Answers
Car fire extinguishers are mostly dry powder extinguishers with a shelf life of one year. They use liquid carbon dioxide or nitrogen as the driving force to expel the dry powder for fire suppression. Car owners should check annually whether the gas in the extinguisher is leaking and if the dry powder has clumped, in order to recharge the gas or replace the powder. Otherwise, an expired extinguisher may fail to discharge the powder or have a significantly reduced discharge time, directly affecting its normal use. Below are precautions for car fire extinguishers: 1. Purchase extinguishers produced by reputable manufacturers to prevent potential malfunctions from the source. 2. After six months of use, regularly check if the dry powder has clumped and whether there is any leakage of carbon dioxide gas in the storage cylinder. 3. Inspect whether the extinguisher's safety pin is intact, if the cylinder is deformed or corroded, and if the nozzle is clogged with oil or dirt.
A car fire extinguisher doesn't necessarily need to be replaced every year - it depends on the specific situation. I always keep a dry powder extinguisher in my car, checking the pressure gauge every few months. As long as the needle stays in the green zone indicating normal pressure, it's fine. Typically it can last two to three years. During last summer's heatwave, I checked it more frequently due to concerns about pressure changes. Storage location is also crucial - don't bury it at the bottom of the trunk, keep it within easy reach. If the extinguisher has been used or the cylinder shows impact damage, replace it immediately. Just check it during regular vehicle maintenance - simple and safe. Don't neglect this small item, it can be lifesaving in emergencies. Especially ensure it's in good condition before long trips.
