SIGNATURE 2 SERIES
Installation
7
How To Calculate Regeneration Frequency
Note: The quantity of both nitrate and sulfate must be known for proper regeneration calculation.
Step 1: Convert Nitrate (NO3) and Sulfate (SO4) to Calcium Carbonate (CaCO3).
Nitrate Divide ppm (mg/l) of Nitrate by 62
NO
3
and multiply by 50.1
Example :
(50 ppm NO3/62) x 50.1 = 40.4 ppm as CaCO3
Sulfate Divide ppm (mg/l) of Sulfate by 48
(SO
4
) and multiply by 50.1
Example :
(75 ppm SO4/48) x 50.1 = 78.28 ppm as CaCo3
Step 2: Calculate the Nitrate / Sulfate ration (as CaCO3).
NO
3
(Nitrate)
= Ratio
NO
3
(Nitrate) + SO4 (Sulfate)
Example :
40.4 ppm = .34 Ratio
40.4 ppm + 78.28 ppm
Step 3: Calculate the operating capacity per cubic foot of resin at 12 lbs. per cubic foot salting (factory setting).
Figure 3 OPERATING CAPACITY
Note: DO NOT REDUCE SALT BELOW THIS LEVEL!
Operating Capacity = 8,500 grain / cu. ft. of media