Document yopk6MVZ0JDvnD48rQ17yz1E

For CLASS B AND C FIRES--Oil, paint, and electncal Also for small Class A fires Operation. Remove locking pin, then press down on charging lever Remove nozzle from holster, squeeze to operate Dis charge is controlled by nozzle on end of hose When the fire is out and extinguisher is not needed, invert the container, hold nozzle in the air, and squeeze lever to release residual pressure and to clear out the hose Maintenance. Periodically check pressure gauge and look for physical damage or corrosion To recharge, remove cap assembly by turning retaining ring counterclockwise until arrow in notched recess aligns with locking device on release lever, cap is released when lever returns to its normal position Remove gaskets, clean, coat with silicone grease Clean out dry chemical from cap and gasket seats, replace gaskets in cap, reassemble unit To pressurize, remove hose and attach adapter and pressurizing equipment Dry nitrogen is the most common pressunzing gas Caution. Pressunzing gas must be dry because if moisture enters the container, dry chemical can harden and not flow freely from nozzle Fic 43-22-Dry-chemical fire extinguisher, stored pressure type (Style discontinued m 1974 ) For CLASS B AND C FIRES--Oil, paint, and electrical Also for small Class A fires Operation Hold m upright position, pull locking nngpin, squeeze the discharge lever On all fires, direct discharge at base of flame and continue even after fire has gone out to minimize the possibility of reflash For best results on Class B fires, applv in a slow sweep ing action, from side-to-side, start at the near edge of the fire and work toward the back of the burning area Fire-fighting effective ness is reduced under windy conditions because C02 is a gas and dissipates Maintenance Should be recharged by an outside agency Every 6 months inspect for visible defects and weigh unit, recharge if loss is more than 10 per cent Caution In confined areas, atmosphere may become oxygen deficient The discharge horn becomes very cold during use, therefore, do not touch it Do not install in areas subject to tem peratures over 120 F 1*it 4J-23 --Oilion choside file estingvnshei 1357