Which of the following is NOT a component of the fire extinguisher maintenance procedure?

The process of maintaining a fire extinguisher involves several key components to ensure that it operates effectively and safely in emergencies. Among these components, inspecting the extinguishing agent, checking the physical condition of the unit, and examining mechanical parts are all essential parts of a comprehensive maintenance procedure.

Training of staff on the usage of fire extinguishers, while critical for ensuring that personnel can effectively use them in the event of a fire, is not a direct component of the maintenance procedure itself. Maintenance focuses on the physical and functional integrity of the fire extinguishers, ensuring they are in proper working order, rather than on the education or training of users. Therefore, training falls under the realm of preparedness and response, rather than maintenance, making it the correct answer in this context.