After use, what must be done before a Class K extinguisher is placed back into service?

• A. It can be recharged by the user
• B. It must be inspected and recharged by a qualified technician
• C. It can be reused after a simple reset
• D. It must be discarded

Answer: (B)

After use, a Class K extinguisher must be inspected and recharged by a qualified technician before it goes back into service. This type of extinguisher is a pressurized, specialized device containing a wet chemical agent for commercial kitchen fires. Discharging it can leave the cylinder with reduced or uneven pressure and can damage components like the horn, hose, or valve. A simple reset or attempting to recharge it yourself won’t restore the correct pressure, replenish the agent, or verify the system’s integrity. A trained technician will perform a thorough inspection for any damage, replace or service parts as needed, recharge the extinguisher to the proper pressure with the correct Class K agent, and Update the service tag. Discarding is only appropriate if the unit is damaged beyond repair or cannot be serviced.