Clean Water Systems Fleck 2510-XST Installation manual

Clean Water Made Easy
www.cleanwaterstore.com
Fleck 2510-XST Sediment Filter
Installation & Start-Up Guide
Thank you for purchasing a Clean Water System! With proper installation and a little
routine maintenance your system will be providing neutral pH water for many years.
Your new system comes with a printed Fleck Service manual, which along with this
start-up guide will help guide you in the installation and start-up of your new system.
The Fleck service manual covers other types of systems as well such as water
softeners and filters, so there may be information in your Fleck service manual that
does not pertain to your system. Please review this start-up guide entirely before
beginning to install your system and follow the steps outlined for best results.
SEDIMENT MEDIA CONTAINS DUST. USE PAPER MASK AND VENTILATE TO AVOID
BREATHING DUST.
Questions?
Call us toll-free: 1-888-600-5426 or 1-831-462-8500
Email us: [email protected]
See more information on our website: www.cleanwaterstore.com/resources

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Table of Contents
Packing List ........................................................................................................................................................3
Pre-Installation ..................................................................................................................................................4
Best Practices for Piping & Drain Installation .....................................................................................................4
How Your Sediment Filter Works .......................................................................................................................5
Fig 1 ...........................................................................................................................................................5
Fig 2: ..........................................................................................................................................................6
Fig 3 ...........................................................................................................................................................7
Fig 4: ..........................................................................................................................................................7
Assembly and Installation Instructions............................................................................................................... 8
Troubleshooting the Fleck 2510-XST Sediment Filter ....................................................................................... 12
Low Water Pressure:.................................................................................................................................... 12
Does NOT remove sediment: ....................................................................................................................... 12
What to Do If Your Filter Tank Does Not Sit Level on the Floor: ................................................................... 12

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Packing List
Sediment Filter 1.0 cubic foot size
Quantity 1 Fleck 2510-XST Backwash Control Valve with Bypass Assembly and Pipe connector kit (1”or ¾”)
Quantity 1 10” x 44” filter tank with distributor tube
Blue media funnel for adding the Chemsorb media
1 cubic foot of Chemsorb media
Sediment Filter 1.5 cubic foot size
Quantity 1 Fleck 2510-XST Backwash Control Valve with Bypass Assembly and Pipe connector kit (1”or ¾”)
Quantity 1 10” x 54” filter tank with distributor tube
Blue media funnel for adding the Chemsorb media
1.5 cubic foot of Chemsorb media
Sediment Filter 2.0 cubic foot size
Quantity 1 Fleck 2510-XST Backwash control Valve with Bypass Assembly and Pipe connector kit (1” or ¾”)
Quantity 1 12” x 52” filter tank with distributor tube
Blue media funnel for adding the Chemsorb media
2.0 cubic foot of Chemsorb media
Sediment Filter 2.5 cubic foot size
Quantity 1 Fleck 2510-XST Backwash Control Valve with Bypass Assembly and Pipe connector kit (1”or ¾”)
Quantity 1 13” x 54” filter tank with distributor tube
Blue media funnel for adding the Chemsorb media
2.5 cubic foot of Chemsorb media

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Pre-Installation
1. Review your packing list and make sure you have received all the parts before beginning installation.
2. If you are going to be turning off the water to the house and you have an electric water heater, shut
off the power to the water heater before beginning installation in case water heater is accidentially
drained.
3. Pick a suitable location for your filter system on a dry level spot where it won’t be exposed to freezing
temperatures. A minimum of 20 PSI is required. Maximum pressure is 90 PSI.
4. Get all of your plumbing parts together before beginning installation. Installation typically takes 3 to
5 hours. However after installation the Sediment Backwash Filter must be allowed to run through a
complete backwash and rinse cycle.
5. After the system is installed and running, your water may be discolored, or full of sediment or rust,
particularly if this is older or corroded piping. Typically this clears up over a day or two.
Best Practices for Piping & Drain Installation
1. See typical installation (see Fig 2). The Sediment Filter is installed after the pressure tank.
2. Make sure to follow to connect the in pipe to the Fleck 2510-XST inlet and the outlet to the outlet
(see Fig 2). As you face the Fleck 2510-XST control from the front, the water enters on the right and
exits on the left. From the back (see Fig 2) the water enters on the left. The inlet and outlet are
attached to the bypass valve which is marked with arrows as well.
3. Make sure there is a working gate or ball valve before the Fleck 2510-XST Sediment Filter and also
one after as shown in the diagram Fig 2. The pressure gauges are optional and perhaps not
necessary but a hose bib (which is a faucet that you can attach a garden hose to) is strongly
recommended after the Sediment Filter before the second ball valve. This makes it easy to rinse your
new Sediment Filter on start-up and gives you a place to test the water before it enters your
household plumbing.
4. If you will be using copper piping, do not sweat the copper pipe directly on to the Fleck 2510-XST
control valve. Avoid heating up the Fleck 2510-XST control valve plastic with the torch.
5. You do not need unions to install your Fleck 2510-XST control. If you need to remove it, the Fleck
2510-XST has quick-release couplings that make it easy to put the Sediment Sediment Filter on by-
pass and remove the filter system from the piping.
6. The drain line tubing (not supplied) is connected to a drain from the drain outlet using flexible ½” ID
tubing. Note that the drain can run up above the Fleck 2510-XST control and into a drain, it does not
have to drain down, as the filter backwashes under line pressure from your well pump. Most

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plumbing codes require an air-gap connection, so that if your sewer or septic tank backs up, it cannot
cross connect with the drain tubing.
How Your Sediment Filter Works
See Fig 1. In your Sediment Filter the water enters the top of the tank and flows down through the media and
up the distributor tube. The downflow type Sediment Filter removes sediment and can be backwashed,
which cleans and re-classifies the Sediment, preventing channeling. During backwash, the water flow is
reversed and water flows down the distributor tube and up through the media, lifting and expanding the
Sediment media. During the backwash the Sediment is cleaned by the action of the water flowing through it.
Fig 1:Sediment Filter Tank
Free space allows Chemsorb media
can expand during backwash
Distributor tube
Chemsorb media
Filter distributor bottom
screen (built-in to tank)

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Fig 2: Typical Sediment Filter Fleck 2510-XST piping installation with ball valve and hose bib after the filter

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Fig 3: Fleck 2510-XST from the rear showing the inlet and outlet end-connector fittings 1” or 1-1/4” NPT in
Noryl plastic. Brass end-connectors are also available for connecting to copper tubing.
Fig 4: Fleck 2510-XST side view
Inlet
Outlet
Bypass Knobs
Inlet
Outlet
Bypass
Connectors
Drain Line
Brine Line for Softening
Systems—NOT USED WITH
YOUR SEDIMENT FILTER

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Assembly and Installation Instructions
1. Unscrew by hand the entire Fleck 2510-XST control valve from top of tank if it was shipped screwed
on. Place distributor tube in tank if not already inside tank. If not already done, make sure blue cap is
on top of distributor tube, or wrap the top of distributor tube with electrical or duct tape. You do not
want Sediment to go down the distributor tube.
2. Next add Sediment filter media (Chemsorb). The tank will be about 2/3rds full of media.
3. Remove cap or tape from top of distributor tube. Be careful not to pull up distributor tube when
removing cap or tape.
4. If possible at this point, fill tank completely with water. This will allow the Sediment Filter media to
settle and eliminate the need of “purging” the air out of the tank later.
5. Screw on Fleck 2510-XST control valve carefully. Do not use pipe-joint compound, Teflon tape, or
Vaseline or other petroleum greases to lubricate tank threads.
6. Lubricate the by-pass valve o-rings with some vegetable oil or silicone grease and connect the bypass
assembly to the Fleck 2510-XST control by sliding the bypass valve firmly into the body of the Fleck
2510-XST. Secure each side with metal adapter coupling and screw.
7. Now install your water pipes to the Fleck 2510-XST bypass end connectors. Make sure inlet is
installed to the 'In" pipe connector on the bypass valve and outlet is on the “Out” connector. Note:
Arrows on bypass valve should be visible from the top of the bypass valve.

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8. Note that the Fleck 2510-XST is usually shipped in the bypass position. You can easily tell if it is in
bypass when the knobs are perpendicular to flow. When in service position, knobs are parallel to
water flow (note above).
9. Connect some flexible tubing from the drain connection on the Fleck 2510-XST control valve to a
suitable drain such as a septic tank or drain to a sewer. It is OK to run the drain line up and over the
Fleck 2510-XST Sediment Filter up to 4 feet above the top of the tank. If the drain line will be more
than 20 feet, use larger diameter tubing such as ¾” or 1”. Note that it is desirable to be able to run
the drain line into a bucket in order to test the backwash flow rate in the future. This is why hard
piping the drain line is discouraged, however, if you do use hard PVC piping for the drain line, and you
are able to remove the hard PVC drain piping and attach flexible tubing should you ever desire for
testing purposes, it is OK to use rigid PVC pipe for the drain. Make sure the drain tubing is firmly
clamped to the barbed fitting with a hose clamp to prevent leaks.
10. For the 2.0 and 2.5 cubic foot systems only: these larger tank systems have an external stainless
steel flow control that comes with the system. This must be installed. If you have a 1.0 or 1.5 cubic
foot system, the flow control is internal and there is no external drain flow control.
Stainless Steel Flow Control (2.0 and 2.5 Cubic Foot Systems Only)
11. Plug in your Fleck 2510-XST control valve to an outlet. Your Sediment Filter 2510-XST control valve is
already pre-programmed. All you need to do is to set the time of day, and then set the number of

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days the Sediment Filter will run before it backwashes and regenerates automatically. The default
number of days between back wash is seven.
12. Press and hold either the Up or Down buttons 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.
13. Hold down the up arrow and down arrow at the same time for 5 seconds. Set the number of days
between backwashes, typically for 1 to 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 its best to leave it to backwash every
1 to 7 days. If there is a lot of sediment in the water, you might want to set to backwash every 1 to 3
days, and if there is moderate sediment and low water use, once a week is fine.
14. Press the Extra Cycle button once. Set the time of the night that you want the Sediment Filter to
backwash. The default time is 2:00 am. Adjust the time by pushing the up or down arrow if you
want.
15. Now press the Extra Cycle button once more. You are done programming!
16. Now you are ready to turn on the water. Turn on the water and leave the Sediment Filter on bypass
and check for leaks. Leave the ball valve after the Sediment Filter closed, so water is still off to the
house, but connect a garden hose and open up the hose bib after the Sediment 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 Sediment Filter
and you do not have a hose bib, you will need to turn the water on inside the house to let the water
run. Use a bathtub or laundry sink or other fixture that does not have an aerator screen.
17. Press the Extra Cycle button for a second or two which will start a manual backwash.
18. Now you can slowly turn the bypass valve to the service position. You do NOT remove the red clips
on the bypass knobs in order to turn the bypass valves from the bypass to the service position. First
open the Inlet Side of the bypass valve. Second slowly open the Outlet Side of the bypass until it is in
the full service position. The Fleck 2510-XST bypass valve knobs are a little stiff, so you can use a
screw driver placed in the holes to turn the knobs. Make sure you are turning the bypass valve knobs
in the correct direction which is counterclockwise as you face the bypass valve knobs.
19. There should be no Sediment media coming out of the drain line, but the water will be gray or dirty
looking. At this point the Sediment Filter will be in a backwash cycle. The backwash takes 10
minutes. If the water slows down or stops during the first 10 minutes of backwash, press the Extra
Cycle to move the Fleck 2510-XST control to the next cycle, the Rinse cycle. Then repeat the
backwash and rinse after the rinse cycle is done, by pressing the Extra Cycle again. If you have high
water pressure you may need to turn on the water slowly to the Sediment Filter at first to prevent
some Sediment fines from coming out the backwash. However it is normal for some small amount of
fines to come out during the backwash, although you do not want to see a large amount of media

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coming out, which would mean you have very high water pressure, or the drain flow for the Fleck
2510-XST is missing.
20. If possible verify that the backwash flow is 7 gallons per minute, which is the recommended backwash
flow rate for 1.0 and 1.5 cubic foot models. The 2.0 cubic foot models require 10 GPM an if you have
a 2.5 cubic foot Sediment Filter it should be backwashing at 12 gallons per minute. You can easily run
the drain hose to a bucket and using a watch verify the flow rate in gallons per minute. An adequate
backwash is critical to properly clean the Sediment media and prevent it from cementing together.
21. The next cycle is the Rinse cycle and this also runs for 10 minutes.
22. After the Sediment 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
Sediment media in the future, that is, the Sediment media must be thoroughly backwashed and
rinsed.
23. Refer to your Fleck 2510-XST service manual for more information about how your control valve is
programmed if desired.

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Troubleshooting the Fleck 2510-XST Sediment Filter
Low Water Pressure:
Make sure it is backwashing frequently enough, in some cases every 1 to 2 days is necessary.
Check backwash flow rate: One problem that may occur is if you do not have enough backwash flow rate to
properly clean the Sediment Filter. You can verify the backwash flow rate by running the drain line into a
bucket and timing it when the Fleck 2510-XST is in Cycle 1 or backwash. A 1.0 or 1.5 cubic foot system should
have 7 gallons per minute and a 2.5 cubic foot system should have 10 gallons per minute of backwash at a
minimum.
Check programming: In some cases, the Fleck 2510-XST may not be programmed correctly. See the Fleck
2510-XST service manual for instructions on how to access the master programming.
Does NOT remove sediment:
Make sure it is not on bypass, see bypass valve positions (page 6)
Fleck 1.03” adapter when using a Vortech tank is missing. Remove control valve and make sure o-ring on
Fleck 2510-XST valve that seals around distributor tube is present, and is sealing tightly around distributor
tube.
In some cases the sediment may be too small to be removed by the filter. One way to determine that the
filter system is working is to run it for one or two weeks until the pressure drops after the filter. Then
manually backwash and observe the backwash water. If the filter has been removing sediment, the backwash
water will be quite dirty and full of sediment. If the backwash is clean, then the particles are less than 5 to 10
microns, and a alum injection system is required to clump the particles together into a larger 5 to 10 micron
form.
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.
How To Remove Media From the Control Head
Sometimes, when doing the Initial Backwash, the media gets lifted up into the control head. You can tell this
happened because you will have little or no flow, either going out to drain while in the backwash positon, or
when in the service positon.
To remove media from a control head, do the following:
1) Put the Inlet Bypass in the Closed position.

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2) From the Service Mode, initiate a manual regeneration, by pressing and holding the regen button (button
on far left).
3) The valve will advance to the BW (backwash) position, and start counting down. Press the Regen button
again, and wait for the valve to advance and stop at the Rapid Rinse (RR) position.
4) With the valve in the RR position, open and close the Inlet Bypass valve several times. After the third or
fourth time, leave it in the open position and check the drain line- do you have a good solid flow? 90% of the
time, the answer is yes, but sometimes, even after opening and closing the valve many times, you still don’t
have good flow… But, in either case (good or no flow), continue…
5) With the Inlet Valve OFF, Advance the valve back to Service position again, and again press and hold the
Regen button, we are putting the valve back to the Backwash position.
6) Open the Inlet valve just enough so you can hear the water passing thru the valve- you should notice a
corresponding slow flow out of the drain line. After a minute, if there are no air bubbles present, open the
valve about another quarter inch- again, you should see a corresponding increase in the flow… And you will
continue until the valve is full open.
IMPORTANT:
Any time that you are in the Backwash or Rapid Rinse position, you may need to unplug the power- this will
hold the valve in its current position, so it doesn’t ‘time out’ and go to the next position. When you plug the
valve back in, after a minute it will return to where it was when you unplugged it (i.e. 2:32 remaining in BW).
Understand, it is not possible to jam media into the head while in Rapid Rinse, or Service, just in the
Backwash, when the flow direction is reversed.
What you are trying to accomplish, after you have pushed the media back in to the tank in the Rapid Rinse
position, is to get the Inlet valve all the way open in the Backwash position, without it jamming media back in
the head, and this is the part where you have to go slow, open up the Inlet valve a little bit at a time and let it
run for a few minutes- this is why you may have to unplug it- and then, once you have done that, finally, do
one more backwash, starting with the Inlet valve open, just as it will be when it does it automatically at night.
Once it does that successfully, you are done.