A.J. Antunes & Co UFL-440 9700475 - Manual (Page 15)

UFL-420/440 WATER FILTRATION SYSTEM
15 P/N 1011055 Rev. F 12/13
MAINTENANCE
System Sanitization
The system and downstream plumbing should be sani-
tized at least every six months. When necessary, follow
the procedure in Sanitizing the System and Lines in
the Installation section of this manual.
Replacing the Ultra Filter Cartridge
1. Turn off water to the system by closing the inlet
valve.
2. Press the FLUSH button to flush the system and
relieve pressure. Repeat several times.
3. Place a bucket under the “T” or cross fitting at the
inlet connection to the system. Open the valve or
unscrew the cap to drain the system.
NOTE: Make sure there is enough room next to the
system to remove the cartridge.
4. Close the inlet drain valve or reattach the cap on
the “T” fitting when the water flow stops.
5. Unplug the system.
6. Remove the Snap Ring from the Ultra Filter
Housing. Grab the raised lug with a pair of pliers
and pull towards the center of the End Cap and
away. The Snap Ring should lift out of its groove.
7. Remove the End Cap, End Cap O-ring, and
Cartridge from the housing (Figure 5).
NOTE: If the Cartridge does not easily come out
of the Housing, remove the opposite End Cap for
assistance.
8. Inspect the Large End Cap O-rings and End Cap
O-ring for nicks or cuts. Replace as needed.
9. Lubricate all O-rings with a food-grade silicone
lubricant. Apply a light coating of lubricant to the
inside center tube at both ends of the new car-
tridge.
10. Record the serial number of the new cartridge.
The cartridge serial number is engraved on one
end of the outer tube (for example: 05K 12013).
11. Install the End Cap O-ring on the End Cap and
insert the Large End Cap into the end of the new
cartridge.
12. Position the new cartridge and End Cap at the
housing and gently insert into the housing.
13. Press the End Cap into position until it is fully
seated and the Snap Ring groove is visible.
14. Install the Snap Ring by guiding the non-lugged
end into the groove first, pushing outward and
working around the ring until it snaps into place.
NOTE: Make sure that the Snap Ring is fully seated
before turning the water on.
15. Rinse the new Ultra Filter Cartridge before
placing the system back into operation. Follow
the Rinsing the Ultra Filter Cartridge and
Sanitizing the System and Lines procedures in
the Installation section of this manual to complete
the cartridge change.
16. When rinsing is complete, repressurize the
system.
Figure 5. Replacing the Ultra Filter Cartridge
Ultra Filter
Cartridge
End Cap
O-Rings
End Cap
Snap Ring
Cartridge
O-Ring