How should maintenance be performed on stored pressure type extinguishers?

Maintenance on stored pressure type extinguishers should be performed according to the manufacturer's guidelines. This is crucial because each extinguisher model may have specific requirements based on its design, components, and intended use. By adhering to the manufacturer's guidelines, technicians ensure that the extinguisher remains effective and compliant with safety regulations. Manufacturer specifications cover inspection intervals, maintenance procedures, and necessary repairs, which are essential for the proper functionality and reliability of the extinguisher in an emergency.

Other choices, while they may present maintenance intervals or requirements, do not encompass the comprehensive approach that the manufacturer's guidelines provide. Simply conducting external maintenance alone does not ensure the internal mechanisms are functional or that the extinguishing agent is effective. Choosing a fixed maintenance period, such as every 5 years or monthly inspections, could overlook specific recommendations that might necessitate more frequent checks or additional services according to the conditions in which the extinguisher is used. Therefore, the safest and most effective approach is to follow the manufacturer's instructions, ensuring each extinguisher is maintained according to its unique specifications.