Pool Operator's Test Questions and
Answers| Latest Update
slurry feed adding DE to the filter while the pump is running
sodium hydrochlorite chemical name for liquid chlorine
scaling mineral deposits on the wall or in the pipes
breakpoint the point at which the chlorine is raised to 10 times the combined chlorine
level and all of the chloramines are oxidized
flow rate amount of water per minute that is returning back to the pool
MSDS This stands for Material Safety Data Sheets and are required by OSHA
(Occupational Safety and Health Administration). These sheets provide complete information on
the chemicals being used
impeller instrument inside the motor that creates the vacuum pressure that pulls the water
through the system
backwash the reverse of flow of water through the filter tanks in order to clean the system
, valves control the flow of water in the system: ex. gate, floating, ball, butterfly
free available chlorine chlorine that is available for disinfection in the water
priming the pump process that provides a system enough water to being filtering prior to
the pump being turned on
chloramines 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 lines that bring water into the system (main drain, skimmers, vacuum)
combined chlorine ineffective chlorine (aka chloramines) which level is found by
subtracting the free available chlorine from the total available chlorine
total dissolved solids TDS; matter that is in the water that is unable to be reduced or
eliminated with chemicals
sequestering agent a chemical that is added to water which PREVENTS staining by
keeping minerals and metal in the water color free
hair and lint strainer serves as protection to the motor by preventing large debris from
damaging the impeller; located before motor
Answers| Latest Update
slurry feed adding DE to the filter while the pump is running
sodium hydrochlorite chemical name for liquid chlorine
scaling mineral deposits on the wall or in the pipes
breakpoint the point at which the chlorine is raised to 10 times the combined chlorine
level and all of the chloramines are oxidized
flow rate amount of water per minute that is returning back to the pool
MSDS This stands for Material Safety Data Sheets and are required by OSHA
(Occupational Safety and Health Administration). These sheets provide complete information on
the chemicals being used
impeller instrument inside the motor that creates the vacuum pressure that pulls the water
through the system
backwash the reverse of flow of water through the filter tanks in order to clean the system
, valves control the flow of water in the system: ex. gate, floating, ball, butterfly
free available chlorine chlorine that is available for disinfection in the water
priming the pump process that provides a system enough water to being filtering prior to
the pump being turned on
chloramines 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 lines that bring water into the system (main drain, skimmers, vacuum)
combined chlorine ineffective chlorine (aka chloramines) which level is found by
subtracting the free available chlorine from the total available chlorine
total dissolved solids TDS; matter that is in the water that is unable to be reduced or
eliminated with chemicals
sequestering agent a chemical that is added to water which PREVENTS staining by
keeping minerals and metal in the water color free
hair and lint strainer serves as protection to the motor by preventing large debris from
damaging the impeller; located before motor
