This rating is a number from 1 to 40 for Class A fires and 1 to 640 for Class B fires. The rating will appear on the label. The larger the number, the larger the fire extinguisher can put out. Higher-rated models are often heavier. Installation and Maintenance Extinguishers should be installed in plain view above the reach of children near an escape route and away from stoves and heating appliances.
Extinguishers require routine care.
Read your operator's manual and ask your dealer how your extinguisher should be inspected and serviced. Rechargeable models must be serviced after every use. Following manufacturer's instructions, check the pressure in your extinguishers once a month. The Pass Word Stand 6 to 8 feet away from the fire and follow the four-step PASS procedure. If the fire does not begin to go out immediately, leave the area at once.