Step-9: Reassemble and Pressurize the Extinguisher. Put all the components back together and make sure they are tightly secured. Double-check that the valve or head is correctly attached to the cylinder. Using a suitable pressurizing device, recharge the extinguisher to the recommended pressure level indicated on the pressure gauge.. Next Question ». A carbon dioxide fire extinguisher is required to be recharged if the weight loss exceeds what percentage of the weight of the charge? (small passenger vessel regulations) A) One percent. B) Five percent.
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The most common fire extinguisher uses a dry chemical powder to extinguish flames, while some use pressurized water or wet chemicals. Other extinguishers, such as that pictured in Figure 1, use carbon dioxide. Carbon dioxide extinguishers can be used on electrical fires, as they do not leave a residue which might damage electrical equipment.. According to 2018 NFPA 10 7.8.1.1, all rechargeable-type fire extinguishers shall be recharged after any use or when the need is indicated by an inspection or servicing. For the most commonly used ABC dry chemical fire extinguisher, internal inspection and recharging is required at six and twelve years from the manufacture date.
