WHEN TO CHANGE CO2 FIRE EXTINGUISHER?
Fire extinguishers have a gauge that tells you if they are fully charged or not. Check monthly, if gauge doesn’t read in the green, or if it looks like the pin is missing, or hose is frayed, or the handle is wobbly, get it serviced. If you have one without a gauge, or it is old have them checked out by a reputable company. Fire extinguishers are good for about 5-15 years.