Main drain purpose - ANSWER-remove sediments and is located at the deep end of the pool
the pressure differential pressure between gauges on a pressure
... [Show More] filter shouldn't exceed - ANSWER-10 psi
which of the following conditions attribute to accelerated growth of algae in a pool - ANSWER-sunlight hot weather and high bather load
chlorine can be used in which of the following forms - ANSWER-gas liquid powder
There are complaints of red eyes in the swimmer nd chlorine odors are present. the alkalinity is 100ppm, the harness is 240ppm, the ph is 7.4 and the chine level is 1.0 what should the pool operator do - ANSWER-shock the pool with chlorine
to raise ph what may be adde to the pool - ANSWER-soda ash
low calcium hardness in the pool water will cause - ANSWER-corrosion of the pool fixtures
bromine is sometimes used as a disinfectant because - ANSWER-it is more stable at a higher temperature than chlorine
components and materials used for commercial swimming pools spas and hot tubs must comply with what standard - ANSWER-ansi/nspa standard 5
a pool should be free from - ANSWER-floating debris, sediment and dirt, algae
a shepherds hook must be attached to a - ANSWER-16 foot one piece pole
filtration is - ANSWER-the process of removing suspend particles form the water
the volume of water going through filter system is measured - ANSWER-in gallon per minute
if a pool has a volume of 75000 gallons and the turnover rate is 8 hours the minimum required flow rate is - ANSWER-156.25 gallons per minute
microorganisms can be shielded from disinfectants if they are in suspended particles. this situation is caused by - ANSWER-high turbidity levels
the chemical name for dry chlorine is - ANSWER-calcium hypochlorite
adding liquid or dry chlorine to the pool water has the following effects on ph - ANSWER-will raise the ph
alkalinity of swimming pool water is recommended to be maintained at - ANSWER-80-140 ppm
chlorine is used in pool water to not only kill germs but to - ANSWER-oxidize organic matter
to becoming a certified pool operator a person must - ANSWER-successfully complete training course in pool operations approved by local jurisdictions
handrails should be anchored into the - ANSWER-pool deck and bottom step
an aid in removing small particles from the pool water is - ANSWER-a flocculent
to clean a cartridge filter - ANSWER-soaked in degreaser and hosed off [Show Less]