A.O. Smith OPAL NW Series User Manual page 15

REPLACEMENT OF POST CARBON FILTER
• Turn off the water supply and open drinking
water faucet.
• Loose tubing unions at inlet and outlet and
discard the used post-carbon.
• Disconnect the union placed at the outlet of the
filter. To prevent leaks, apply teflon tape to the
T-connector on water supply and install the filter.
• Tighten the tube unions.
WARNING: FLOW marking on the filter shows
thedirection of the water outlet. Ensure not to
insert it backwards and do not over-tighten
T-connector and the union on the other side.
A. O. Smith Water Treatment Device is designed
for easy installation and maintenance. It is
essential not to exceed the recommended
replacement periods of cartridge filters and
to use the deviceproperly. When the required
maintenance and repair is not provided, the life
span of the device is shortened and the efficiency
of the membranes is reduced. Such situations
may cause certificate of warranty to be void.
DISINFECTION PROCEDURE
The water treatment device should be disinfected
at least once a year as follows;
• Turn off the water supply.
• Drain all of the water from the tank by opening
the faucet (for the models with tanks).
• Add a teaspoon of chlorine to the filter
housing and screw back onto the cap.
• Turn on the water supply.
• Repeat this process for 2 times and replace all
cartridge filters (for the models with tanks).
Water outlet direction
PRECAUTIONS TO USE YOUR
DEVICE LONGER;
To ensure that your device functions properly
and to prolong the life of the device, the
following pointsmust be taken into consideration.
Otherwise, the warranty will be voided.
• Do not use with water that has temperature
above 40 ˚C.
• Place or fix the device on a flat surface.
• Do not touch the valves on the device except
when necessary.
• It is recommended to install pressure reducer
on water inlet of RO device when installation
pres- sure is high. Ensure that periodical
maintenan- ce is performed on time and by
the authorized service.
• In case of long periods of non-use, turn off
water supply. Follow start-up procedure when
you want to re-operate.
• Keep your device clean by wiping with a wet
cloth periodically and avoid using harsh and
corrosive cleaners.
Water inlet direction
15