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Make sure all of the variables in process controller are entered correctly, see Troubleshooting Start-up page if you need to know how to do this.
Dosing
At the Cornell Water Filtration Plant PAC is dosed in parts per million (ppm) relative to the amount of water running through the system at the Cornell Water Filtration Plant. For this reason we can dose our water at the same ratio as the plant. PAC dosage does not vary greatly, so 10 to 15 ppm is a typical range of dosage.
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