Pool Operator's Test Study Guide Rated A+

valves {Ans: control the flow of water in the system: ex. gate, floating, ball, butterfly}gauges {Ans: used to measure the pressure in the system}chloramines {Ans: aka combined chlorine. chlorine that has already connected with ammonia or nitrogen and is no longer useful for disinfection, high levels leave strong odor and cloudy water}influent lines {Ans: lines that bring water into the system (main drain, skimmers, vacuum)}causes of corrosion {Ans: too low pH, alkalinity or calcium hardness}15 minutes {Ans: maximum time someone should spend in a spa}