Which of the following actions is necessary for maintaining a chlorinator?

Maintaining a chlorinator is crucial for ensuring effective disinfection in wastewater treatment processes. One of the fundamental actions necessary for maintaining a chlorinator is cleaning and inspecting the injector system. The injector system is responsible for introducing chlorine into the water stream. Over time, this system can accumulate buildup from chlorine and organic materials, which can lead to reduced efficiency or malfunction. Regular cleaning helps to ensure that the system operates optimally and delivers the correct dosage of chlorine, thereby maintaining water quality.

While monitoring the flow rate of the water supply is important for overall system performance and ensuring that the chlorinator is functioning correctly, it does not directly relate to the maintenance of the chlorinator itself. Regularly changing the chlorinator brand is not a maintenance practice; instead, consistency in the brand used can help ensure predictable performance. Replacing the chlorine cylinder every month may not be necessary depending on the usage and capacity, as it could lead to unnecessary costs without contributing to effective maintenance.