Recharging a previously used cartridgeoperated drychemical extinguisher is accomplished by______．A.authorized fire equipment servicing personnel onlyB.replacing the propellent cartridge and refilling with powderC.puncturing the cartridge seal after installationD.recharging the cartridge and refilling it with powder
Recharging a previously used cartridgeoperated drychemical extinguisher is accomplished by______．
A.authorized fire equipment servicing personnel only
B.replacing the propellent cartridge and refilling with powder
C.puncturing the cartridge seal after installation
D.recharging the cartridge and refilling it with powder
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