www.aquasafecanada.com | Maximus II Installation Instructions 05/13 | page 23
page 22 | Maximus II Installation Instructions 05/13 | www.aquasafecanada.com
R.O. Membrane – How to change the R.O. Membrane of your system.
The fourth stage of your system is the Reverse Osmosis Membrane (Dow Filmtech Material R.O. 0.0001
Micron). For your convenience, the Reverse Osmosis Membrane offered by Aquasafe will fit perfectly
into any Reverse Osmosis System Aquasafe has offered in the past.
Step 1. Depressurize your system.
(see Fig. 29)
Step 2. Remove R.O. Membrane housing Cap
(Fig. 33)
Step 3. Removing the old R.O. Membrane and inserting the new R.O. Membrane
(Fig. 34)
Please note: The R.O. Membrane needs to be inserted as
firmly as possible to ensure a proper seal is formed. For the
R.O. Membrane to function properly it is extremely important
for the two small “O” rings on the tip of the R.O. Membrane
to seal properly inside the R.O. Membrane housing. To gain
added leverage you can use a pair of needle nose pliers (or
the like) to grab hold of the 1 inch white cylinder protrud-
ing from the base of the R.O. Membrane to push in and twist
slightly. You will notice the membrane slip further into its
housing forming the necessary seal described.
Next, screw the R.O. Membrane housing Cap back into place
using the small canister wrench and reinsert the white tubing
(Fig. 35).
AquARIuM II DuAL SYSTEM FILTER CHANgE INSTRuCTIONS
Pre-Filters – How to conduct a filter change.
Step 1. Changing the pre-filters
(Fig. 31)
Please note: After completing Fig 31 (Steps 1-5), you will need to conduct a “pre-filter flush” so don’t
repressurize your system yet!
Step 2. Flushing the Pre-Filters
(Fig. 32)
All water filters throughout the water filtration industry should be flushed out before final use to rinse
away any initial loose particulates from the manufacturing process. This process is very easy.
Congratulations. You have just completed a full change of your systems three pre-filters ensuring the
purest of water for you and your aquatic pets and the continued performance of your system. Remem-
ber to mark on your calendar when to change the pre-filters again and check for any other filters that
may need changing at this time in the Aquarium II Dual Filter Change Schedule starting on page 19.
Figure 32
Flushing the
pre-filters
Figure 33
Removing the
R.O. Membrane
Housing cap
NOTE:
Back View -
hanging
bracket
not shown
for clarity
1
2
3
Disconnect (see Fig. 10) the white tubing from the third
pre-filter housing and the yellow tubing from the output
side of the E-Z Flush Flow Restrictor
Connect the yellow tubing to the last
pre-filter housing. The flush water will run
through this tube into your drain.
Manual
Shut-Off Valve
in “OFF” position
E-Z Flush
Flow Restrictor
feed water in
yellow tubing
to discharge
saddle clamp
Turn Manual
Shut-Off Valve
back ON and flush
new pre-filters for
10-15 minutes
4
5
feed water in
yellow tubing
to discharge
saddle clamp
DONE!
After the 10-15 minute flush turn Manual Shut-Off
Valve back OFF and reconnect the white and
yellow tubes to their original positions.
If this is the only filter change you are doing at this
time, you can turn the Manual Shut-Off Valve and Tank
Top Valve back ON and you are
to faucet
3 Way T
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Final Polishing Filter
to tank
1
Remove white tubing (see Fig. 10) from
the elbow adaptor found on the cap of
the Reverse Osmosis Membrane Housing.
Using the small
canister wrench that
came with your system,
remove the cap of the
R.O. Membrane
housing. Twist the cap
counter clockwise.
Please note: Have a
cloth at hand... some
water will come out
when taking the cap
off the R.O. Membrane
housing and removing
the membrane itself.
elbow
un
scr
ew
NOTE:
Side View
disconnected
white tube
Small Canister
Wrench
2
to
aquarium
sump
tank
white
tubing
Figure 34
Removing the old
R.O. Membrane
and inserting the
new one
Figure 35
Screw on the
R.O. Membrane
housing cap and
re-insert the
white tubing
1
2
Removing The Old Membrane: You will now be able to
see the Reverse Osmosis Membrane inside the R.O.
Membrane Housing. The membrane can swell inside its
housing making it difficult to remove by hand. Use a pair
of needle nose pliers (or the like) to grab hold of the
1 inch white cylinder protruding from the base of the
membrane and pull out the old R.O. Membrane.
RO
MEMBRANE
Inserting the new R.O. Membrane: Your R.O.
Membrane comes sealed for freshness in a clear
protective plastic. Remove your new membrane
from its protective plastic. Insert your new R.O.
Membrane into the R.O. Membrane housing of your
system. The end of the R.O. Membrane that has the
two small “O” rings gets inserted first.
NOTE:
Side View
re-connect
this white tube
to the elbow
Small
Canister
Wrench
Screw the R.O. Membrane
housing cap back onto it place
and reinsert the white tubing.
to faucet
elbow
scr
ew on
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2
1
Depressurize your system (see Fig. 29)
3
4
5
large canister
wrench
NOTE: R.O. Membrane, filters
and hoses not shown for clarity
Remove and discard old filter. Remove
protective plastic from the replacement
SED (sedimentary) filter and insert into
housing. There is no up or down to this
filter.
SED
GAC
CCB
Make sure the new SED pre-filter is centered in the
pre-filter housing. Screw the first pre-filter housing
back on and tighten using the large canister
wrench. Use reasonable force to ensure a proper
compression seal.
Unscrew the first pre-filter housing with the large
canister wrench. Please note: There will still be
water in the housings of the filters so it will be
helpful to have a cloth at hand.
GAC filter
has a white
gasket at
the top and
mesh on
the bottom.
Replace the second (GAC -
Granular Activated Carbon) and
third (CCB - Coconut Carbon Block)
pre-filters in the same way. The
only filter for which direction
matters is the GAC filter.
Move on to the pre-filter flush.
Figure 31
Changing the
pre-filters
