Hayward W3AQ-TROL-HP AquaTrol-Above-Ground-Chlorine-Generator-Owners-Manual-09 - Page 4

Water Chemistry, Saturation index

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Water Chemistry As with any pool, it is important that you maintain chemical makeup of the pool water. The table on page 2 summarizes the levels that are recommended by the National Spa and Pool Institute (NSPI). The only special requirement for the AquaTrol is the salt level and stabilizer. It is important to maintain these levels in order to prevent corrosion or scaling and to ensure maximum enjoyment of the pool. Test your water periodically. Your local pool store can provide you with the chemicals and procedures to adjust the water chemistry. Be sure to tell the pool store that you are using an AquaTrol chlorine generator. 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 ±.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 equation and chart below to determine the saturation index. Si = pH + Ti + Ci + Ai - TDS °C °F Ti Hardness Calcium Ci Total alkalinity Ai Total Dissolved Solids TDS 12 53 0.3 75 16 60 0.4 100 125 19 66 0.5 150 24 76 0.6 200 250 29 84 0.7 300 34 94 0.8 400 600 39 102 0.9 800 1.5 75 1.6 100 1.7 125 1.8 150 1.9 200 2.0 250 2.1 300 2.2 400 2.4 600 2.5 800 1.9 0-1000 12.10 2.0 2.1 1001-2000 12.29 2.2 2.3 2.4 2001-3000 12.35 2.5 2.6 3001-4000 12.41 2.8 2.9 4001-5000 12.44 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 in 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 0.2 Stain Ok 2 USE ONLY HAYWARD GENUINE REPLACEMENT PARTS

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USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
2
Water Chemistry
As with any pool, it is important that you maintain chemical makeup of the pool water.
The table on
page 2 summarizes the levels that are recommended by the National Spa and Pool Institute (NSPI).
The only special requirement for the AquaTrol is the salt level and stabilizer.
It is important to maintain
these levels in order to prevent corrosion or scaling and to ensure maximum enjoyment of the pool.
Test your water periodically.
Your local pool store can provide you with the chemicals and procedures
to adjust the water chemistry.
Be sure to tell the pool store that you are using an AquaTrol chlorine
generator.
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 ±.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 equation and chart below to determine the saturation index.
Si = pH + Ti + Ci + Ai - TDS
Hardness
Calcium
75
100
125
150
200
250
300
400
600
800
Total Dissolved
Solids
Total
alkalinity
°C
°F
Ti
Ci
Ai
TDS
12
16
19
24
29
34
39
53
60
66
76
84
94
102
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.4
2.5
75
100
125
150
200
250
300
400
600
800
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.8
2.9
0-1000
1001-2000
2001-3000
3001-4000
4001-5000
12.10
12.29
12.35
12.41
12.44
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 in 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.
Corrosion
Stain
Ok
-0.2
0.2