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2.5 Cubic Foot Model: 13.0 GPM minimum 15 GPM recommended
24. The next cycle is the Rinse cycle and this runs for 6 to 8 minutes. After the backwash, the Fleck
7000 will automatically advance to the rinse cycle.
25. After the MangOX filter has gone through the backwash and rinse, press the Extra Cycle button
and repeat the backwash and rinse. This is the same procedure that needs to be done each
time you add MangOX media in the future, that is, the MangOX media must be thoroughly
backwashed and rinsed.
26. Refer to your Fleck 7000 service manual for more information about how your control valve is
programmed if desired.
Maintaining Your MangOX Filter System
There is little or no maintenance required. Every 6 – 10 years the MangOX media can be replaced for
best results.
If your water has a lot of hydrogen sulfide odor or iron and manganese levels over 10 ppm, a chlorine
feed pump may be needed to inject a small amount of chlorine before the well pressure tank and
MangOX filter. The MangOX will remove any chlorine tastes or odors. In most cases this is not
necessary but chlorination (or ozone, or peroxide injection) before the MangOX filter can greatly
enhance the ability of the media to remove iron, manganese and hydrogen sulfide.
Troubleshooting the Fleck 7000 MangOX Filter
One problem that may occur is if you do not have enough backwash flow rate to properly clean the
MangOX filter. You can verify the backwash flow rate by running the drain line into a bucket and timing
it when the Fleck 7000 is in Cycle 1 or backwash.
In some cases, the Fleck 7000 may not be programmed correctly. See the Fleck 7000 service manual
for instructions on how to access the master programming. Your Fleck 7000 should be set for FLtr or
Filter mode and have two cycles, backwash and rinse.
If you are still getting some iron through the system, you can adjust the filter to backwash every 1 or 2
days.
In some cases if the untreated water is high in hydrogen sulfide, or the iron level is over 5 ppm, a
chlorinator system may be needed before the iron filter, in order for the MangOX media to work
properly.
Page 11
MangOX 7000‐SXT Installation & Startup Guide
www.cleanwaterstore.com
Rev 051912
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