Maintenance - Whirlpool WHAROS5 Installation And Operation Manual

PREFILTER / POSTFILTER MAINTENANCE
NOTE: It is recommended to replace the battery,
prefilter, and postfilter cartridges at least every
6 months of product water use. Replace more often if
they begin to plug with sediment.
The prefilter and postfilter are replaceable sediment
cartridges with activated carbon in their composition.
See Fig. 26. You must periodically replace the prefilter
and postfilter cartridge. This will protect the RO
membrane from being destroyed by chlorine. It will
also keep the filters from plugging with sediment.
You may notice a slower output of product water as
the prefilter and postfilter build up with sediment.
Replace the prefilter and postfilter cartridges when this
occurs. You should replace the battery whenever you
replace the cartridges.
RO MEMBRANE CARTRIDGE MAINTENANCE
The Reverse Osmosis cartridge is a tightly wound
special membrane. See Fig. 26. The membrane
reduces the dissolved solids and organic matter. The
life of the Reverse Osmosis membrane cartridge
depends mostly on the pH and hardness of the supply
water (see Specifications). Cartridge life is shorter with
higher pH. For example, if supply water pH is from 6.8
to 7.7, the cartridge may last for well over one year.
However, cartridge life may be as short as 6 months if
the pH is as high as 8.5 to 10. Higher pH weakens the
cartridge membrane and causes pin-hole leaks. It's
time to replace the Reverse Osmosis cartridge when
the production rate and/or quality of product water
drops. Product water may begin to taste different,
indicating solids and organics are passing through the
Reverse Osmosis membrane. See Reverse Osmosis
cartridge replacement.
NOTE: You may notice some

Maintenance

water under the system
during filter change.
Turn filter cartridges
counterclockwise
to remove from manifold
Turn filter cartridges
clockwise
to attach to manifold
Register for reminders to change filters
at whirlpoolwatersolutions.com
REVERSE OSMOSIS CARTRIDGE
REPLACEMENT
Complete the following steps to replace the cartridges.
1. Remove (turn counterclockwise) the prefilter
cartridge from the manifold to stop flow to the
Reverse Osmosis cartridge.
2. Remove the Reverse Osmosis cartridge.
3. Remove the postfilter cartridge.
4. Discard the cartridges in a proper manner.
5. Install new cartridges in reverse order: post filter,
Reverse Osmosis and then prefilter. Turn cartridges
clockwise to reattach to the manifold. Do not
overtighten.
6. Remove and replace the timer battery. See page 16.
7. Purge the Reverse Osmosis system. See page 20
for instructions.
PREFILTER / POSTFILTER CARTRIDGE
REPLACEMENT
Complete the following steps to replace the cartridges.
1. Remove (turn counterclockwise) the prefilter
cartridge from the manifold. Then remove the
postfilter cartridge.
2. Discard the cartridges in a proper manner.
3. Install new cartridges in reverse order: postfilter first,
then prefilter. Turn cartridges clockwise to reattach
to the manifold. Do not overtighten.
4. Remove and replace the timer battery. See page 16.
5. Purge the Reverse Osmosis system. See page 20
for instructions.
Prefilter
Cartridge
RO
Cartridge
23
Manifold
Postfilter
FIG. 26
Cartridge