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Cyanuric Acid
Cyanuric Acid acts as water “Stabilizer” or “Conditioner”. This chemical goes by either trade
name and allows your chlorine residual to last longer by protecting it from the UV rays of the sun.
With low cyanuric acid, chlorine can be used up just as quickly as it is generated.
Note: For indoor pools, it is not necessary to maintain a stabilizer level to protect the chlorine
from the UV rays.
Metals
Some metals, i.e. copper and iron, can cause loss of chlorine. Also, metals can stain your pool.
Have your local pool professional check for metals and recommend methods of removal. Metal
content should be 0 ppm (mg/L).
Preparing the Pool Water
Installer please note - When properly sized to the site, the AutoPilot
®
will meet the sanitizer
“maintenance” requirements of the pool/spa. The unit is not designed to chlorine shock treat or
build up a chlorine residual when starting with a zero or very low chlorine level.
Before starting the chlorinator, the water must be properly balanced, and the chlorine level
adjusted to between 2.0 - 4.0 ppm (mg/L) free chlorine. See more on adjusting water balance
and start-up chlorine levels earlier in this section.
Calculating Pool Volume
To determine the approximate number of gallons or liters in a pool or spa:
1.
Determine the surface area.
2.
Multiply the surface area by the average depth and the constant conversion factor of 7.5 to convert
cubic feet to gallons, or 1,000 to convert from cubic meters to liters.
Rectangle
l Area = Length x Width
l Gallons = area x average depth (ft
3
) x 7.5
l Liters = area x average depth (m
3
) x 1,000
Circular
l Area = Radius x Radius x 3.14
l Gallons = area x average depth (ft
3
) x 7.5
l Liters = area x average depth (m
3
) x 1,000
To determine the approximate number of gallons or liters in a more complex shaped pool:
1.
Divide the complex shape into several simple shapes.
2.
Calculate each one separately, and then add back together.
Example: An oblong pool can be divided into two radius measurements and one
rectangular shape. (R = Radius)
l Area = Radius x Radius x 3.14 + (Length x Width)
l Gallons = area x average depth (ft
3
) x 7.5
l Liters = area x average depth (m
3
) x 1,000
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