www.aquasafecanada.com | Maximus II + Remineralization Installation Instructions 09/13 | page 19
Testing to see if your R.O. Membrane needs replacing.
Step 1. How to depressurize your system
(Fig 27)
Step 2. Test your permeate water
(Fig 28)
The PPM count should be 15% or less from that of your unfiltered tap water that can be gathered from
any cold water tap in your home.
• Example: if your unfiltered tap water is 200ppm then the purified permeate water coming out of
the R.O. Membrane should be 30ppm or less (200 x 0.15).
If your R.O. Membrane is not producing the 85% or better in PPM reduction as depicted above, you
need to change this membrane.
Are you unsure when you replaced the R.O. Membrane Last?
Aquasafe™ highly recommends you replace your Reverse Osmosis Membrane if you have never
changed the R.O. Membrane of your system and your system is more than 3 years old or if you cannot
remember the last time you have replaced your R.O. Membrane. If you are not sure it is better to be
safe than sorry. The R.O. Membrane is the most important filter in your system, therefore, ensuring it is
operating properly is key to producing the ultra purified, healthy water you desire
1
2
3
Shut off the flow of water to the feed
water supply line of your system via the
Manual Shut Off Valve found spliced
into the feed water line.
Turn the tank top valve,
found on top of your
water holding tank,
to its “OFF” position.
feed
water line
Manual Shut-Off Valve
in OFF position
PURE
PRO
Remineralization
Press down on
your kitchen faucet
until the flow of
water stops to
complete the
depressurizing
process.
Tank Valve in OFF position
ON
OFF
Manual Shut-Off Valve (top view)
TOP VIEW OF SYSTEM
Final P
olishing Filt
er
1
4
Depressurize your system (see Fig. 27)
2
Remove (see Fig 10) the blue tubing coming out
of the R.O. Membrane housing from
where it connects into the D.I. Resin Canister.
Gather some water coming from the
disconnected blue tube and test the PPM count
with your TDS Meter. The PPM count should be
15% (or less) than that of your unfiltered water.
Turn the feed
water back ON
with the Manual
Shut-Off Valve
NOTE:
Back View -
hanging
bracket
not shown
for clarity
Manual
Shut-Off Valve
in “OFF” position
E-Z Flush
Flow Restrictor
feed water in
yellow tubing
to discharge
saddle clamp
3
TDS Meter
Figure 27
How to
depressurize
your system
Figure 28
Testing your
permeate water
with the TDS
meter