Table of Contents
Advertisement
7500-M Neutralizer Installation & Startup Guide
Alternatively, you can manually backwash it several times on a given day, etc. Secondly, you
can open up the bypass valve slightly, and allow some untreated water to lower the pH by
blending in some of the lower pH water. In 6 – 12 months or next service just add less Corosex.
pH is Too Low!
This can happen if the water entering the neutralizer has a pH less than 6.0. Generally the
water after your neutralizer should have a pH of 7.0, and the pH reagent in your pH test kit
should turn a light green to darker green depending on the pH.
Give your neutralizer some time, and after several weeks, if the pH is still coming out less than 7
and the test reagent is yellowish in color, you may need to add some Corosex to the neutralizer
tank to raise the pH. Contact our office if you don't have any Corosex on hand and/or you
ordered a Calcite‐only system.
The Calcite‐only systems work best if your water's pH is between 6 and 6.9 and are desirable as
they add fewer minerals to the water, so it is best to start out with a Calcite only system if your
pH is 6.0 to 6.9. This works for a majority of our customers.
White Spots on Fixtures and Glasses
Calcite neutralizers work by adding natural calcium minerals to the water. Many natural well
or spring waters that are acidic (with a pH of less than 7.0) are low in minerals and are
considered "soft" water.
This lack of natural buffering calcium minerals contribute to the corrosive nature of these
waters. After the water has passed through the neutralizer, the water will be higher in calcium
and "harder" but not hard enough to warrant a water softener, which removes hardness.
It is more common to see some white film or spotting on fixtures if you are using a blend of
Calcite and Corosex. It might be that too much Corosex was used originally in the mix of media.
If you are starting to see white spots and films on surfaces after the neutralizer has been
installed, you might want to take these steps:
Set the backwash frequency for every 3 days for a couple of months.
Check the hardness level before and after. If your hardness is higher than 5 grains per gallon
after the neutralizer, your neutralizer may be adding more minerals than is needed, and you
can open up the bypass valves a slight amount in order to blend in some untreated water.
Check the pH before and after. You only need the pH to be in the 7.0 to 7.5 range. If the pH is
higher than that, you may be adding more minerals than is necessary.
Page 14
www.cleanwaterstore.com
Rev 12222019
Advertisement
Table of Contents
