Pool Operator Study Guide

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Ideal bromine level in a pool and spa is:
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3ppm to 6ppm
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Ideal chorine level for a pool is:
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1ppm to 5ppm
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Maximum level of chlorine in a pool is:
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5ppm
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If you see bubbles coming up from a return, the possible cause could be
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a bad seal on the hair/lint strainer – it is not properly closed, or air is in the filter, or water level is too low
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The hypochlorinator doesn’t work. What could be a possible cause for this? a) no chlorine in the vat b) the injection fitting is clogged c) the tube assembly needs to be changed d) all of the above
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d) all of the above
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You go to the pool in the morning and notice the chlorine is at zero. You hand-feed chlorine, how long to do you have to wait to allow people to go into the pool. a) no time b) 15 minutes c) 30 minutes d) One day
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c) 30 minutes
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When doing the pH test and the sample turns yellow, what does it mean?
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pH is too low
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When doing the pH test and the sample turns purple, what does it mean?
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pH is too high
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What do you do if a patron complains of a chlorine smell and their eyes are stinging?
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Raise the chlorine to Breakpoint Level.
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If the telephone at the pool doesn’t work
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close the pool
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What should you use when handling chemicals?
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Personal Protective Equipment – Gloves, Goggles, Apron
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What happens if the alkalinity level is too low?
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pH is difficult to maintain, the water will cause damage to the pool walls
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ADD CHEMICALS TO WATER; DO NOT ADD WATER TO CHEMICALS
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How do you lower the Calcium Hardness Level?
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Drain water out and add fresh water. Dilute the water.
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What should you have if the water is deeper than 5 ft?
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Put up a safety line
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If the chlorinator is working and you have chlorine in the vat, what is a possible reason for the chlorine reading being 0?
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The test could be bleached (chlorine level is too high)
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What kind of filter media filters the smallest particles?
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Diatomaceous Earth (DE)
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To be a pool operator you must
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complete pool operators training course
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The strongest suction in the pool is
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the main drain
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Electrical system at pool must have
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GFI’s
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The skimmer
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weir prevents floating material from re-entering the pool.
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Filtration is the
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physical process of water moving through the system.
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The time it takes for all the water to go through the filter system is the
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turnover rate
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In most jurisdictions the turnover rate is
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6 hours
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Algae forms because of
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poor circulation and/or low chlorine levels
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Most common form of algae
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green
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Worst type of algae
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black
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What is responsible for stains in the pool?
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copper, iron, magnesium and other metals
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To remove stains from the pool surface
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drain and acid wash the pool
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Adding chlorine to the pool to the pool
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raises the pH
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Adding bromine to a pool or spa
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lowers pH
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The formula for area is
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length x width
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formula volume is
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length x width by depth by 7.48 (num. x num. x num. x 7.48)
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To measure the area for circular pool
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3.14 r^2
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Flow Rate=
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Turnover Rate/Filter Media Rate
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Flow Rate=
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number of gallons divided by hours of turnover (multiply hours by 60 to get minutes)
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CDC states that the number of accidents related to swimming are:
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140,000
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Minimum number of ladders required in a pool are:
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2
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Stairs in a pool must be accompanied by a
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handrail must be anchored in the pool deck and in the bottom step
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When a pool has deep water more than 5 feet must have
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a safety line and a slope line mark
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Channeling means
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over the course of time the filter and sand is bad and deep channels are formed in the sand causing it to filter poorly
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As the dirt in the filter accumulates the flow of water going through the filter
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decreases while filter pressure increases
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removing dirt/particles from filter
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backwashing
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High speed sand filters are able to filter how much water per minute per square foot?
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15-20
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The flow of water through the filter is
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gallons per minute
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Breakeven point level of chlorine at a pool you must have
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10 times the level of chloramines
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If a patron smells chloramines (bad chlorine) you should
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shock the pool
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Maximum temperature in a spa is
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104 degrees fahrenheit
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Maximum bromine level in a spa is
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6ppm
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pH levels should be
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7.2-7.8 (like a pool)
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If you are using gas chlorine at a swimming pool the filter room must be
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WELL VENTILATED.

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