Watts OneFlow OF744-10-EK Manual De Instalación, Operación Y Mantenimiento página 11

Replacing the Media
NOTICE
Your OneFlow media should be replaced every 3 years as
indicated by the U-M311 elapsed time monitor. Dispose of
old media and/or container in accordance with local, regional,
national, and/or international regulations.
1. Shut off the primary water supply going to the OneFlow
tank.
2. Open up a downstream spigot or faucet to release pressure
in the tank and in the distribution lines before and after
the system.
3. Close the inlet and outlet isolation valves immediately before
and after the tank.
4. If you have installed optional By-Pass Valve model #
CK-V3006 (EDP #0002167), place into By-Pass position.
5. Disconnect the unions on the inlet and outlet fittings of the
tank, and then disconnect from head.
6. Using a strap wrench, remove the threaded head assembly
connection (turning counter-clockwise) and remove the
complete upper assembly including upper basket. Rinse
these parts in a nearby sink or bucket of water. Do not drain
the tank.
7. Remove the distributor tube with the bottom strainer. Rinse
these parts in a nearby sink or bucket of water.
8. Get a 6ft length of 3/4" sch. 40 PVC pipe and a length of 1"
polyvinyl hose. The length of hose depends on the distance
to the nearest floor drain. (Both of these can be acquired at
a local hardware store.)
9. Insert one end of the pipe inside the hose and put the other
end of the pipe into the top of the tank and down into the
media. Put the other end of the hose inside a woven bag
and put the woven bag on the floor drain.
10. Get a garden hose and put it on the open end of the poly-
vinyl hose to fill the hose and pipe with water. Air will bubble
out of the tank. Once all the air is out of the hose and pipe,
you can start a siphon to remove the media. Put the garden
hose in the top of the tank and turn it on to keep the tank
full of water. Push the pipe up and down in the media to get
it all out. The woven bag will catch the media and allow the
water to go down the drain.
11. Try not to be too aggressive when extracting the media. You
need to take it out in small bites. If you let the whole pipe/
hose fill with media it will plug up. You need to let slugs of
water flush out the pipe as you go.
12. When all the old media is removed turn off the garden
hose and continue to siphon until the tank is about half full
with water.
13. Reinstall the distributer tube with bottom strainer that was
removed in step #7. Center the distributor tube in the bottom
of the tank. Make sure the distributor tube is between flush
to no more than 1/2" above the top of the tank. Keeping
any and all media from entering the distributor tube,
cap the top open end of the distributor tube with plastic
sheeting and tape. Test it to make sure it will not come off
during the media loading process. Carefully pour-in a new
container of media that specifically meets the replacement
requirement of the tank. For example, an OF1054-20 -EK
system requires (x1) OF1054RM Replacement Media.
14. Inspect the threaded connection on the top of the tank to
ensure no loose beads of media are stuck to the internal
threads. If visible, wipe away the beads with a damp cloth,
then remove the plastic sheeting and tape from the top of
the distributor tube.
15. Re-attach the head assembly onto the distributor tube and
thread the head assembly back onto the tank. Hand-tighten
head until the connection is tighten.
16. Reconnect inlet and outlet union connection fittings.
17. If you have installed optional By-Pass CK-V3006
(EDP #0002167), place into Service position.
18. Open the primary water supply valve, slowly open the outlet
water isolation valve and slightly open the inlet isolation valve
to fill the tank with water.
19. Allow water to flow from a downstream faucet until all air
has been purged from the plumbing system, then close the
faucet.
20. Once the tank is full of water, wait 4 hours for media
to "hydrate".
21. Fully open the inlet isolation valve.
22. Reset the life of the media back to full capacity on the
U-M311 elapsed time monitor by touching the bottom right
MENU icon. Touch "New Media Reset". Touch "Reset Now"
and confirm reset by touching "Yes". The system is now
restored to 100% capacity and ready for operation.
1" HOSE
BAG
FLOOR DRAIN
Alternative Method for
Replacing Media
Follow steps 1 – 6 then,
• Remove center distributor tube and lower basket and siphon
all water from tank
• Lay tank down on its side and tip upside down while using
hose to flush media out
• When all the old media is removed, stand tank back up and
install in original position. Fill the tank so that it is about half full
with water.
Then continue with steps 13 – 22.
11
3/4"
PVC PIPE