Saturation Index - Hayward AquaRite + Owner's Manual

Water Balance
The water must be balanced manually BEFORE the device is started up.
The following table summarises the ideal chemical levels recommended by Hayward. Your water should be checked regularly to maintain
these ideal levels in order to minimise surface corrosion, scaling or deterioration and to ensure maximum performance from your
AquaRite+ Chlorinator.
Salt
Free chlorine
pH
Cyanuric acid
(Stabiliser)
Total alkalinity
Calcium hardness
Metals

Saturation index

Saturation Index
The saturation index (Si) relates to the calcium and alkalinity in the water and is an indicator of the pool water "balance". Your water is
properly balanced if the Si is 0 ± 0.2. If the Si is below -0.2, the water is corrosive and plaster pool walls will be dissolved into the water. If
the Si is above +0.2, scaling and staining will occur. Use the chart below to determine the saturation index.
WARNING –
Chemicals can cause internal and external burns. To avoid death, serious injury and/or damage to equipment,
wear personal protective equipment (gloves, goggles, mask, etc.) when servicing or maintaining this device
treatment products must be installed and/or stored in an adequately ventilated place as per the manufacturer's
recommendations.
WATER CHEMISTRY
CHEMICAL
2.7 to 3.4 g/L
(2700 ppm - 3400 ppm)
1.0 to 3.0 ppm
7.2 to 7.8
30 to 50 ppm max.
(Add stabiliser only if necessary)
0 ppm in indoor pool
80 to 120 ppm
200 to 400 ppm
0 ppm
-0.2 to 0.2 (0 best)
Si = pH + Ti + Ci + Ai - TDS
Hardness
Ti
°C °F
(Calcium)
0.3
12 53 75
100
16 60 0.4
125
19 66 0.5 150
200
24 76 0.6
250
29 84 0.7 300
400
34 94 0.8
600
39 100 0.9 800
Use: Measure the pH of the pool water, the temperature, water hardness, total alkalinity and total
dissolved solids. Use the table above to determine Ti, Ci, Ai and TDS from your measurements. Insert
your values of pH, Ti, Ci, Ai and TDS into the formula shown above. If the Si is equal to 0.2 or more,
stains may appear. If the Si is equal to -0.2 or less, corrosion or deterioration may occur.
- 0.2
CORROSION
USE ONLY HAYWARD
®
IDEAL LEVELS
Total Total
Ci Ai
Alkalinity Dissolved Solids
1.5 1.9
75 0-1000
1.6 2.0
100
1.7 125 2.1
1001-2000
1.8 150 2.2
1.9 2.3
200
2001-3000
2.0 250 2.4
2.1 300 2.5
3001-4000
2.2 2.6
400
2.4 600 2.8
2.5 800 2.9 4001-5000
0 0.2
STAIN
OK
GENUINE REPLACEMENT PARTS
TDS
12.10
12.29
12.35
12.41
12.44
.
The
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