Document V3NMMjXgpGJ1YerbJqMxOED6o

Fire Extinguishment and Control CAP AMO CARRY!MR HANDLE Operation Contains a small metal cylinder of carbon dioxide gas under pressure To release the gas, which provides the pressure to expel the water, invert the extinguisher and bump it gently on the floor while holding it by the bottom handle (In some models, bumping is not necessary because the weight of the gas cartridge causes it to fall against a puncturing device ) Direct the stream at the base of the fire, then follow up after the flames while working from side-to-side or around the fire if possible Maintenance. Annually inspect for corrosion of shell, proper liquid level, defects m rubber gasket, clogging or damage to hose or nozzle, and bent discharge elbow Weigh the gas cartridge, replace if it has lost `/j oz of the weight stamped on the shell See that cartridge slides freely in its cage when inverted Alter use, simply refill with water or antifreeze solution Caution. Protect from freezing Do not charge unit above the level mark because unless the gas has room to expand, it may burst the shell Do not refill with loaded-stream charge unless extin guisher is designated as loaded-stream type Fig 36-13 --Gas cartndge water extinguisher May be labeled "loaded stream" if charged with a special alkali-metal salt solution instead of water Operation. Invert extinguisher, hold by bottom handle The lead stopple will drop from the bottle and allow the two chemicals to mix, C02 gas will be generated and will supply the pressure necessary to discharge contents through the hose and nozzle Di rect the stream at the base of the fire, then follow up after the flames while working from side-to-side or around the fire if possible Maintenance Penodic external inspection and yearly discharge and recharge During recharge, check hose and nozzle for ob structions and defects, bent discharge elbow, corrosion, or other mechanical injury, and thoroughly wash out metal shell, hose, and nozzle Mix sodium bicarbonate and water solution in separate, clean container and strain into extinguishei The loose-fitting lead stopple must be on acid bottle to reduce hydroscopic action Caution Store m heated cabinet because antifreeze solution can not be used to protect from temperatures below 40 F, do not sub ject to temperatures above 120 F Fig 36-14--Soda-acid fire extinguisher 1098