What maintenance should be performed on fire extinguishers in postal vehicles?

Regular checks for pressure levels are crucial for maintaining the effectiveness of fire extinguishers in postal vehicles. Fire extinguishers rely on a pressurized agent to function properly, and if the pressure drops below a certain level, the extinguisher may not operate effectively in an emergency. Ensuring that the pressure is within the recommended range helps confirm that the equipment is in operational condition.

While cleaning of exterior surfaces and inspecting for color fading may contribute to the overall appearance and readiness of the extinguisher, they do not directly relate to its functional reliability in an emergency. The need for annual replacement of extinguishing agents could lead to unnecessary expense and potential misunderstandings about the frequency of service needed, as many extinguishers are designed for longer lifespans if properly maintained. Therefore, systematic pressure checks provide a reliable means of ensuring that fire extinguishers in postal vehicles remain effective at all times.