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7800 Greensand Filter Installation & Startup Guide
Permanganate tank not filling with permanganate solution
Potassium permanganate is a powder that is poured on top of the "grid pad" in the pot perm tank.
During the brine fill cycle, water is added to the pot perm tank to make up the pot perm solution
required for the next regeneration.
If your pot perm does not have ½" to 1" of solution above the grid pad, the first to check is to make sure
it is filling the tank:
1.
Disconnect the 3/8" black poly line at the pot perm tank or at the control valve.
2.
Put the system into a regeneration cycle by holding down the manual regen button. You can
advance to the Brine Fill cycle by turning the regeneration cycle further. Advance to the BF cycle.
3.
If it IS filling, remove the safety float and make sure the air check ball is moving free and not
stuck. A stuck float is often the cause of this problem and can be easily fixed. If the float is
defective or older than 5 years, replace float.
4.
If it is NOT filling during the Brine Fill (BF) cycle, then make sure there are enough minutes. It
should be set for 12 minutes for standard size Clack pot perm tanks. If you have a larger
commercial size tank, set for 20 minutes.
5.
If it is still not filling, the brine valve may need to be cleaned. In the 7800 manual, in the
diagram "Valve Assembly", disconnect the parts listed and clean them thoroughly.
Page 17
www.cleanwaterstore.com
Rev 120214
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