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12. For the 2.5 cubic foot and larger systems only: use external drain backwash flow control. If you have
a smaller size neutralizer, then the flow control is internal and there is no external flow control. Wrap
some Teflon tape on the black drain fitting, and screw on the flow control.
Fig 6 – Stainless Steel Backwash Drain Flow Control (2.5 Cubic Foot Systems Only)
13. Plug your Fleck 2510 control valve into an outlet. Your Neutralizer 2510 control valve is already pre-
programmed. All you need to do is to set the time of day, and then set the number of days the
Neutralizer filter will run before it backwashes and regenerates automatically. The default number of
days between back wash is 7.
14. Press and hold either the Up or Down button until the programming icon replaces the service icon
and the parameter display reads TD. Set the time of day by pressing the up or down arrows until it is
the current time of day. When the desired time is set, press the Extra Cycle button to resume normal
operation, or wait 5 seconds and the unit will return to normal operation if no button is pressed.
15. Hold down the Up and Down buttons at the same time for 5 seconds. Set the number of days
between backwashes, typically for 7 days. If your water is very clean (no sediment or iron) you can
set the backwash frequency to as little as every 14 days, but if not it is best to leave it to backwash
every 7 days.
16. Press the Extra Cycle button once. Set the time of night that you want the Neutralizer filter to
backwash; the default time is 2:00 am. Adjust the time by pushing the up or down arrow if desired.
17. Now press the Extra Cycle button once more. You are done programming!
18. Now you are ready to turn the water on. Turn the water on, leave the neutralizer on bypass and
check for leaks. Leave the ball valve after the Neutralizer filter closed, so water is still off to the
house, but connect a garden hose and open up the hose bib after the Neutralizer filter and allow the
water to run for several minutes. This important step clears out any foreign material that may be in
the pipes from the piping installation. If you do not have a valve installed after the Neutralizer filter
and you do not have a hose bib, you will need to turn the water on inside the house and let it run.
Use a bath tub, laundry sink or other fixture that does not have an aerator screen.
Page 8
Fleck 2510 Neutralizer Installation & Startup Guide
www.cleanwaterstore.com
Rev 062714
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