During a monthly inspection, what should you verify about a Class K extinguisher’s gauge?

• A. The gauge shows a full charge
• B. The pressure indicator is in the operable range
• C. The gauge shows a valid charge
• D. The extinguisher must be replaced if the gauge is unreadable

Answer: (B)

During a monthly check, the important thing is that the pressure indicator on the Class K extinguisher is within its operable range. That range represents the pressure level at which the extinguisher can reliably discharge its agent. It doesn’t have to read full, just within the green or designated operable zone to be ready for use. If the gauge is unreadable or shows pressure outside this range, the unit needs servicing to restore proper operability.