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7500-M Neutralizer Installation & Startup Guide
Maintenance
Check level of neutralizer media in the tank by shining a flashlight from behind. When new or recently
serviced the media should be about 2/3rds full in the tank.
When level of media drops to 50% or less add more neutralizer media to bring back up to 2/3rds full and
then backwash and rinse 2 ‐3 times to clean the new media.
Using your pH test kit, check pH before and after the neutralizer.
Troubleshooting the 7500 Neutralizer Filter
Backwash Flow Rate
One problem that may occur is if you do not have enough backwash flow rate to properly clean
the Neutralizer filter. You can verify the backwash flow rate by running the drain line into a
bucket and timing it when the 7500 is in Cycle 1 or backwash. A 1.0 or 1.5 cubic foot system
should have 5 gallons per minute and a 2.5 cubic foot system should have 10 gallons per minute
of backwash.
In some cases, the 7500 may not be programmed correctly. See the 7500 service manual for
instructions on how to access the master programming.
What To Do If Your Filter Tank Does Not Sit Level On the Floor
Your black filter tank base is not glued to the bottom of your tank. Occasionally tank bases will
become crooked during shipment. If you find that that your tank does not sit level on the floor,
you can easily adjust it by holding the empty tank and rapping it on a concrete or solid floor
once or twice in order to level it.
pH is Too High!
If the pH after your neutralizer is greater than 8.5, your pH kit may turn the color of the
reagent, a purple color. This is nothing to be alarmed about. In some cases, too much Corosex
added to the neutralizer‐Calcite‐Corosex blend can cause this problem; it almost never happens
with Calcite only systems.
If this happens, set the backwash cycle frequency to every night for a couple of weeks, which
will cause the media to be washed more thoroughly and use up the excess Corosex.
Page 13
www.cleanwaterstore.com
Rev 12222019
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