If the chlorination injector is not drawing solution effectively, which component should be checked first?

• A. The chlorine cylinder valve
• B. The feed pump
• C. The injector
• D. The reservoir level

Answer: (C)

The device that actually pulls the chlorine solution into the line is the injector, so when it isn’t drawing effectively, the first thing to check is the injector itself. Inspect for a clogged or worn nozzle, improper seating or misadjustment, and any air leaks or restrictions in the suction line that could break the vacuum the injector needs. Also confirm there’s chemical in the reservoir and that suction connections are tight so the injector can draw properly. If the injector checks out, you’d then look at the feed pump or reservoir level as the next potential causes, but the immediate, most likely source of the problem is the injector.