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7800 Greensand Filter Installation & Startup Guide
Maintaining Your Greensand 2510 Filter System
Adding Potassium Permanganate:
Add one 5-lb jug of potassium permanganate every 3 - 4 months. Check the potassium permanganate
solution tank and when you see the mound of potassium permanganate disappear after a few months,
just add another 5-lb jug. In some cases, you won't see the mound; you might just see solution after a
couple of weeks. This is OK; you still only need to add the potassium permanganate every 3 months in
most cases. If you have it set to regenerate (backwash cycles) every 1 – 3 days, you might need to add it
more frequently, perhaps every 2 months.
Troubleshooting the 7800 Greensand Filter
PROBLEM / SYMPTOM
Iron or manganese or sulfur odor in
treated water after Greensand Filter
Page 14
POSSIBLE
CAUSE
No permanganate in
solution tank
Not backwashing often
enough
Water being used
when Greensand Filter
is in regeneration.
Permanganate
solution is not being
sucked in during the
regeneration brine
cycle.
www.cleanwaterstore.com
SOLUTION
Add permanganate powder to tank and
regenerate greensand filter
Set to backwash more frequently.
Backwash twice in one day and re-check
water.
If any water is used during the 90 minute
regeneration cycle, untreated water will
enter household piping. Set time
Greensand Filter regenerates to a time
when no one will be using the water.
Clean brine injector
Clean potassium permanganate tank
Replace permanganate support pad in
permanganate tank
Inadequate backwash flow. Make sure
there that Greensand Filter is backwashing
at the correct backwash flow rate (5 to 10
gallons per minute depending on size of
filter).
Low water pressure. Increase water
pressure to unit by adjusting well pump
pressure switch, or replacing well pump.
Rev 120214
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