VZN V SERIES
17
P/N 1011266 Rev. D 11/16
MAINTENANCE (continued)
System Sanitization
The system and downstream plumbing should be sanitized
every six months. When necessary, follow the procedure in
Sanitizing the System and Lines
in the Installation section
of this manual.
O-ring
TAC
Housing
TAC
Cartridge
TAC
Head
Red Pressure
Relief Button
Gasket
TAC
Housing
TAC
Cartridge
Figure 10. Removing the TAC Housing (VZN-441VE-T5 only)
Figure 11. Replacing TAC Cartridge (VZN-441VE-T5 only)
Rinsing and Replacing the TAC Cartridge
(VZN-441VE-T5 ONLY)
NOTE: Do not perform this procedure with a new Carbon
Element Installed.
1. Turn off water to the system by closing the Inlet
Ball Valve and then close the Outlet Ball Valve.
2. Press the
FLUSH
button to initiate the flush cycle.
Repeat several times to ensure the permeate tank
is empty.
3. Press and hold the Red Pressure Relief Button on
the top of the TAC Housing (Figure 4) to lower the
water level inside the housing by 2 to 3 inches.
4. Remove the TAC Housing (Figure 3).
5. Empty any water into a drain and discard the old
TAC Cartridge (Figure 4).
6. Inspect the O-ring on the TAC Housing. Replace
the O-ring if it is cracked, twisted, or missing.
7. Lubricate the O-ring with an approved food grade
lubricant and install into the TAC Housing.
8. Install the new TAC Cartridge into the TAC Hous-
ing with the arrow on the cartridge pointing up.
NOTE:
Make sure the End Seal gaskets are in place in
the recessed grooves on both ends of the TAC
Cartridge (Figure 4).
9. Screw the TAC Housing (containing the TAC Car-
tridge) into place on the TAC Head. The Housing
will come to a hard stop at the end of the thread.
Use a Filter Wrench if necessary.
10. Direct water from the Rinse Ball Valve to drain.
NOTE:
It is important to direct the Rinse Ball Valve to
a drain as the water resulting from the flush
should NOT be used.
11. Turn on the water to the system by slowly open-
ing the Inlet Ball Valve and allow water to flow
through the TAC Cartridge and Housing to clear
out trapped air and any carbon fines that may be
present.
12. To help remove trapped air from the TAC Housing,
press the Red Pressure Relief button on the top of
the Housing until water just begins to come out.
13. Rinse the TAC Cartridge for at least 5 minutes.
NOTE:
Do NOT consume the water used for rinsing the
TAC Cartridge.
14. When the TAC Cartridge rinsing is complete, close
the Rinse Ball Valve and open the Outlet Ball
Valve.
15. Reconnect the water to service. The system is
now ready for use.
