AMI AAA-RO-200 Owner's manual

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Manual for Installation, Operation, and Maintenance of
5 Stage Point of Use Reverse
Osmosis Drinking Water System
Document ID #: AAARO200
Revision: 08/02/2023
AAA-RO-200

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 1
About Your RO Water Treatment System
Thank you for your purchase of the AMI home RO reverse osmosis water treatment system. This drinking
water system has been designed for quick and simple installation and maintenance. By carefully reading this
instruction manual and following the operational guidelines you will ensure a successful installation and reliable
operation. Routine maintenance is essential to the longevity and performance of the system. Filters should be
changed every three to six months depending on the quality of the feed water supply.
Notice: Please read this entire service guide prior to beginning installation.
5 Stages of Water Treatment
Stage1: Sediment Filter Cartridge Replace every 3-6 months
The first filter the water passes through is a five micron filter cartridge. This cartridge removes
sediment including dirt, sand, rust, grit, and other suspended matter from water. This protects the rest
of the filtration stages and equipment from damage and clogging due to buildup of sediment.
Stage 2 & 3: Carbon Block Filter Cartridges Replace every 3-6 months
Next, the water passes through two stages of carbon filters to remove chlorine, chemicals, and
objectionable tastes and odors from water. These filters also protect the membrane from exposure to
chlorine, which would damage the membrane.
Stage 4: Reverse Osmosis Membranes (2 in Parallel) Replace every 12 months
The fourth stage is the reverse osmosis membrane, which is the heart of the RO system. The RO
membrane substantially reduces the total dissolved solids (TDS) from the water, including arsenic,
barium, cadmium, chromium (hexavalent), chromium (trivalent), copper, turbidity, fluoride, lead, radium
226/228, and selenium, while washing the rejected contaminants down the drain. The treated water is
directed to the storage tank.
Stage 5: Post Carbon Filter Replace every 3-6 months
The last stage of filtration occurs as the water flows from the storage tank directly before being
dispensed from the faucet. The in-line carbon post filter (also known as polishing filter) removes any
remaining tastes or odors from the water, improving the flavor.
Notice: Replacement frequency varies based upon incoming water quality and use patterns.
Generally speaking, filters should be changed when there is a loss of performance or
after an extended period of non-use.
System On/Off Valves
Your RO System is equipped with two on/off ball valves. The system feed valve (to be installed into the cold
water supply line) can be used to turn the water to the system on and off for maintenance without disrupting
the water supply to the sink. The tank valve can also be closed to prevent water in the tank from draining out
during maintenance. Both can be opened by turning counterclockwise, and closed by turning clockwise.
System Feed Valve in
OPEN Position
System Feed Valve in
CLOSED Position
Tank Valve in
OPEN Position
Tank Valve in
CLOSED Position

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 2
Table of Contents
About Your RO Water Treatment System.........................................................................................................1
5 Stages of Water Treatment ............................................................................................................................1
System On/Off Valves.......................................................................................................................................1
Conditions for Operation ...................................................................................................................................3
Warnings .............................................................................................................................................................3
System Flow Diagram ........................................................................................................................................4
Preparing For Installation ..................................................................................................................................5
Recommended Tool List: ..................................................................................................................................6
Check Location .................................................................................................................................................7
Assemble Filter Housings onto System Manifold..............................................................................................7
Prepare Tubing .................................................................................................................................................8
Quick Connect Fittings and Tubing Connections ..............................................................................................8
Installation Steps
Step 1 - Drill a Hole into the Sink for the Faucet..............................................................................................9
Step 2 - Faucet Installation ..............................................................................................................................10
Step 3 - Drain Saddle Installation....................................................................................................................11
Step 4 – System Feed Line Installation ..........................................................................................................12
Step 5 – Installing the RO Storage Tank.........................................................................................................13
Additional Point of Use Connection (Optional) .............................................................................................14
System Mounting..............................................................................................................................................14
Turning the System On for the First Time......................................................................................................15
Replacement Parts ...........................................................................................................................................16
System Maintenance ........................................................................................................................................17
Membrane Replacement Instructions .............................................................................................................17
Filter Replacement Instructions.......................................................................................................................17
Sanitizing.........................................................................................................................................................17
Troubleshooting Chart .....................................................................................................................................18
RO Basics………………………………………………………………………………………………………………...19
Maintenance Schedule and Log……………………………………………………………………… Back Cover

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 3
Conditions for Operation
Source Water Supply
Community/Private Non-Chlorinated or chlorinated as long as the carbon filters (standard)
are in place and replaced every 6 months. Chlorine will damage
membranes if not removed properly.
System Pressure 45 psi minimum - 80 psi maximum
For pressure below 45 psi, a booster pump is necessary to raise the
incoming water pressure and improve the RO efficiency.
Temperature 41 – 104ºF (5 – 40ºC) (This RO system is NOT designed for HOT
water). The RO process will be slightly faster the warmer the source
water is and vice versa.
Maximum Supply TDS Level 1500 ppm (mg/L)
Warnings
System must be installed indoor away from possible environmental damage including
hot/cold weather and direct sunlight.
Never use hot water or allow the unit to freeze.
Avoid hitting, dropping, or dragging the system as this can cause cracks and leaks.
Only use this system on potable water supplies. Do not use this system where the
water is microbiologically unsafe or of unknown quality without adequate disinfection
before or after system.
Incorrect installation or operation will void the warranty.
Excessive incoming water pressure can cause leaks, flooding and property damage. It
is highly recommended to monitor your home’s incoming water pressure over a period
of 24 hours to determine if a pressure regulator is required.
Manufacturer assumes no responsibility for damages incurred through improper
installation or use of these products.
Ensure that all tubing and fittings used for RO product water are poly material, and not
copper. Due to RO product water being very pure, it can leach the minerals from
copper tubing which will cause a metallic taste in the water or ice and cause the copper
tubing to develop pinhole leaks over time.
Installation needs to comply with state and local laws and regulations.
This reverse osmosis system contains a replaceable treatment component critical for
effective reduction of total dissolved solids. The product water shall be tested
periodically to verify that system is performing satisfactorily.
Important! Please TURN OFF the main cold water supply to the RO system when the
unit is not in use during a vacation or extended leave. During very cold or freezing
weather conditions, please also TURN OFF the main cold water supply and completely
drain all of the water from the RO system and water storage tank.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 4
SystemFlowDiagram
A Water supply to the first housing
B Water supply to the second housing
C Water supply to the third housing
D Housing with the RO Membrane
E Fou
r
-way Valve
F In-Line Cartridge with Activated Carbon
G Flow Restricto
r
H Tank Valve
I Tank
J Faucet
1 Clean Water Outlet
2 Pollutants Outlet
3
Water Supply to the 4-way valve from the elbow
connector “OUT” in the third housin
g
4
Clean water supply to the 4-way valve through
the membrane
5
Water outlet from the valve to the membrane
6
Clean water outlet from the valve to the in-line
cartrid
g
e with activated carbon

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 5
Preparing For Installation
Components Included
Open the box and remove all of the components. Inspect them to ensure nothing was damaged during
shipping. If any part is cracked or broken, please immediately contact our Customer Support. Identify and get
familiar with the components. Check the following list of components to ensure that all parts are packed with
your system.
RO Assembly Pre-Filter Housing Sumps Pre-Filter Cartridges
Storage Tank RO Faucet w/ Installation Kit 3/8” Feed Water Adapter Valve
with 1/2" Connection Adapters
Color-Coded Tubin
g
Se
t
Drain Saddle ¼” Tank Valve
Housing Wrench Spare O-Rings and Fittings

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 6
System Component Identification
RO Unit
Top Part Components
Post Carbon (T33) Filter
RO Membrane Filter
Bottom Part Components
Filter Housings
Sediment Filter
CTO Carbon Block Filters (2)
1. Sediment filter (1
st
stage filter)
2. Carbon filter (2
nd
stage filter)
3. Carbon filter (3
rd
stage filter)
4. Bracket
5. Membrane housing
6. Post carbon filter
7. Pressure storage tank
Recommended Tool List:
Have the below tools on hand before beginning installation. These are not included with the system.
Variable speed drill with three bits: ⅛” & ¼” (for drilling a hole on
PVC drain pipe), ½” hollow diamond (for drilling a hole on
countertop for drinking faucet).
½” and
7/16” open-end wrenches (or two adjustable wrenches)
Phillips screwdriver
Utility knife
Teflon tape
Masking tape or duct tape

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 7
Determine Installation Location
Space: Make sure there is sufficient space under the counter for installation (an area of about 16”L x 6”W
x 18”H for the system, 11”D x 18”H for tank).
The RO system is best installed under the kitchen sink. But if that is not feasible you can install the system
anywhere where there is a cold water supply with sufficient water pressure for the chosen RO model, and
an outlet to drain off the drain water from the system. Avoid locations where the system might come in
contact with hot water pipes or other hazards.
Mounting: No need to mount the RO system on the wall. The RO system can stand in the sink cabinet
without mounting, this makes future filter change easy and convenient. If you prefer to mount the system to
the wall, please make sure it can be taken down easily for filter replacement.
Determine the location of the cold water feed line to use for the system supply.
Notice: Accidentally hooking up the system to the hot water supply line will permanently
damage the membrane (see conditions for operation). To assure you are using the
cold water line, turn on both the hot and cold faucet. After the water is warm to the
touch, feel the pipes under the sink. It will be easy to identify the hot and cold pipes.
Determine the location for the faucet. Check to see that drilling the faucet hole will not damage pipes or
wires running underneath the sink.
Determine the location for the storage tank. A maximum distance from tank to faucet of 15 feet is possible
(additional tubing will be needed). The system will produce a faster flow at the faucet with the shortest
tubing run from tank to faucet. The storage tank can lay on its side if needed.
Assemble Filter Housings onto System Manifold
Note: The RO Membrane Element has already been pre-installed
Remove plastic/paper wrappings on the 3 filters and housings, put filters into the 3 housings, and assemble the
housings onto the main system as follows:
1. Stand the 3 housings upright. Make sure each housing has a rubber O-ring in its groove.
2. Put the sediment filter into the “1st stage” housing on the right. Put the CTO filters into the “2nd and
3rd stage” housing in the middle and left.
3. Starting from the 3rd stage housing on the left, hand twist the housing onto the main system turning
counterclockwise, one by one, for all 3 housings.
4. Use the wrench provided to completely tighten the housing starting from 1st-stage. Repeat this step
for the 2nd stage housing in the middle, and for the 3rd stage housing on the left.
Note: For some people it is easier to use the wrench with the system laid down (face up).

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 8
Prepare Tubing
Notice: Make your cuts against a flat cutting surface with a razor
blade, or use a handheld tube cutter. Any cuts to your
Tubing must be perfectly straight. Improperly cut tubing
can fail to lock into fittings and cause leaking.
When cutting tube lengths, it is important to ensure the system is
accessible for maintenance. During installation and measuring, it is
recommended to complete all of the tubing connections to the system
with the system in front of the cabinet (before mounting) to allow
enough slack for easy removal of the system for easier maintenance.
Measure and cut (4) lengths of tubing in the appropriate lengths for:
Feed line (cold water) to system pre-filter inlet (White Tube)
Post filter inlet (tee) to tank (Blue Tube)
Post filter outlet (elbow) to faucet (Blue Tube)
Membrane outlet flow restrictor to drain (Yellow Tube)
Quick Connect Fittings and Tubing Connections
To ensure a secure seal using quick connect fittings:
Cut tubing with the end square. An angled cut or distortion of the
tubing will not provide an efficient seal and may cause leaks.
Remove blue locking clip from fitting before installing tubing. Push
down on the fitting collet and remove the plug. Keep the clip. The plug
may be discarded.
Push the tubing into the fitting, to the pipe stop. The collet (gripper)
has teeth which hold the tubing firmly in position while the 'O' Ring
provides a permanent leak proof seal.
Check the Seal: Pull on the tubing to check it is secure. It is good
practice to test the system prior to leaving site and/or before use.
Replace blue locking clip after tubing is installed.
 To Disconnect: Ensure system is depressurized before removing
fittings. Push in the collet against the face of the fitting. With the collet
held in this position the tube can be removed. The fitting can then be re-
used.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 9
Step 1 - Drill a Hole into the Sink for the Faucet
Notice: There are several options which do not require drilling. Check to see if any of these
are feasible before proceeding to drill. If you do not require drilling for your
installation, proceed to step 2.
a) Spare hole: If there is a spare hole in the sink covered by a chrome cover, simply remove
the chrome cover and install the RO faucet there.
b) Spray hose: If the spray hose is not in use, remove the hose, and mount the RO faucet
there. Remember to plug up the outlet under the main faucet. If the spray hose uses a
diverter at the base of the spout, be sure to remove it to avoid trouble later on.
c) Hanging faucet: If drilling a hole is not feasible (i.e. rental home, drill tool not available
etc.), the faucet can just hang on the cabinet door or wherever that is convenient. Be
creative!
Notice: Manufacturer assumes no responsibility for damages resulting from installing faucets
into any surface. It is recommended to use a licensed contractor for this step.
For this, step, you will need:
Masking tape or duct tape
Variable speed drill with ⅛” and 7/16” drill bits
½” hole saw bit for faucet opening – appropriate for the surface you are drilling
Determine the desired location for your RO Faucet
When drilling a hole for the RO faucet, choose a location that looks good, works well, and is most
convenient for dispensing pure water. An ample flat area is required for the faucet base so that the faucet
can be drawn down tightly.The faucet may be installed on any flat surface at least 2” in diameter. Check
the underside of the location for interference. The standard faucet that is supplied with the system requires
a ½” diameter hole. The optional air-gap faucet requires a larger hole of ¾” to allow for the additional
tubing connections required.
Stainless Steel Sinks
Begin by placing a piece of masking tape or duct tape on the determined location where the hole is to be
drilled. Make a small indent to mark the desired drilling location using a center punch. Drill a pilot hole with
a ⅛” metal drill bit. Enlarge the hole using a ¼” metal drill bit, using factory approved method or approved
plumbing practice.
Porcelain/Enamel Sinks or Tile Countertop
Sinks of this type are very easy to damage due to the nature of the materials of construction. A successful
installation into these sinks requires a knowledgeable technician with the proper cutting tools. We strongly
recommend the use of a “Relton” type device. Follow the directions that accompany the tool carefully.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 10
Step 2 - Faucet Installation
For this step, you will need:
Faucet assembly kit included with System
Blue Tubing, cut to the appropriate length
Wrench
Install the faucet onto the
countertop/sink:
Find and identify all of the parts in the faucet bag, as
shown in the diagram.
Add the metal washer (2), and then the rubber seal
(3) onto the threaded nozzle of the faucet (1).
Place the faucet nozzle through the previously drilled
hole in the countertop or sink top, and let it rest on the
sink top.
From the underside of the sink, slide the washers
onto the threaded stem as shown in the diagram.
- (4) & (5) - made of rubber
- (6) - made of metal
Secure the assembly by threading on the locking nut
(7).
Check the orientation and alignment of the faucet and
washers, adjust as necessary, then use a wrench to
tighten the locking nut securely
Notice: Do not overtighten fittings.
Install the Tubing
Slide the metal nut (10) over the end of the tubing
with the threads facing up.
Add the plastic clamp (9).
Press the plastic insert (8) into the end of the tubing.
Slide the tubing (until it stops) inside the faucet nozzle
and screw it in by hand with
the nut that was placed on
the tubing earlier (10).
Connect the other end of the
tubing to the elbow in the
“out” end of the post filter.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 11
Step 3 - Drain Saddle Installation
Notice: Some states require the use of an air gap faucet. Check your local plumbing code to
assure compliance.
For this step you will need:
oMasking tape or duct tape
oVariable speed drill w/ ⅛” and ¼" drill bits
oPhillips Screwdriver
oDrain saddle assembly supplied with system
oYellow tubing cut to appropriate length
Select Location for Drain Saddle Installation
Select a location for the drain hole based on the design of the plumbing.
It should be installed above the trap and on the vertical or horizontal tail
piece. To avoid possible drainage noise, mount drain line as low as
possible on the vertical tailpiece.
Notice: Do not install downstream of a garbage disposal,
as this can cause contamination and system
fouling.
Drill a ¼” Hole in the Drain Pipe
Starting with the ⅛” drill bit, drill a ⅛” hole in the drain pipe. Use the ¼” drill bit to enlarge the hole. Clean the
debris from the pipe and the hole before continuing.
Notice: Take extreme caution to not drill through to the other side of the drain pipe.
Install the Drain Clamp
Apply the foam gasket inside the front half of the drain saddle: Punch out the cut-out hole in the center of
the pad, remove the adhesive backing, and adhere to the inside of the drain saddle, ensuring the holes
are aligned.
Place one half of the plastic drain saddle assembly on each side of the drain pipe with the fitting, and
clamp loosely using the nuts and bolts included.
Align the hole drilled in the drain pipe with the hole in the drain saddle. Make sure to align the drain
saddle hole to the drilled hole perfectly. Mis-aligning these two holes will block the drain water and
cause membrane damage. A drill bit or other long narrow object may be used to help align correctly.
Use Phillips screwdriver to tighten the clamp. Avoid over-tightening.
Connect Drain Line to RO System Reject Line
Insert the yellow tubing to the pipe stop in the quick connect
fitting on the drain line and check the seal.
Connect the other end of the yellow tubing to the flow
restrictor outlet coming from the membrane brine port.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 12
Step 4 – System Feed Line Installation
For this step you will need:
½” and
7/16” open-end wrenches (or two adjustable wrenches)
Teflon Tape
Feed Adapter Valve Kit
White Tubing
Locate and Turn Off the Cold Water Supply
Locate the valve in the cold water feed line you use for the supply.
Notice: Accidentally hooking up the system to the hot water supply line will permanently
damage the membrane (see conditions for operation). To assure you are using the
cold water line, turn on both the hot and cold faucet. After the water is warm to the
touch, feel the pipes under the sink. It will be easy to identify the hot and cold pipes.
Close the cold water valve.
Turn on the sink faucet to drain water and relieve pressure from the lines.
If no shut off valve is located under the sink, or if water continues to come out of the faucet, turn off the
main supply at the entry to the house, then turn on the sink faucet to drain water and relieve pressure from
the lines.
Assemble the Ball Valve & Adapter Kit
Use Teflon tape to wrap the threads of the adapter – approximately 3 wraps.
If your cold water feed line is ½”, use the ⅜” to ½” adapters provided.
oIf your feed line is ⅜”, you do not need these adapters.
f
Install the Feed Adapter into the Cold Water Supply
Wrap the slip joint adapter with Teflon
tape, approximately 3 wraps.
For Flex Line: Loosen nut and
separate cold water riser tube from
faucet shank. Gently bend riser rube
so that slip joint fits onto faucet shank.
Make sure the flat washer is on top
and the cone washer is on the bottom.
Reinstall riser tubes onto slip joint
adapter and tighten.
For Solid Copper Riser Tube: Same
procedure as flex tubing except you
must cut a piece of the riser tube about
¾” to 1” so the slip joint adapter can fit
between faucet and riser tube.
(Continued on next page)
For Flexible Line For Solid Line

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
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Page 13
Connect the Feed Line Tubing
Unscrew the nut from the ball valve. Slide the nut onto the tubing, threaded
sides facing the end of the tubing.
Feed the nipple on the ball valve into the tubing, pushing the tubing until it
slides over the lip.
Slide the nut to the threads on the ball valve, and tighten the nut down over
the tubing.
Use a wrench to tighten ¼ turn past finger-tight.
Connect the other end of the tubing to the feed port on the RO System.
Step 5 – Installing the RO Storage Tank
For this step you will need:
Storage Tank
Tank Valve
Blue Tubing cut to the appropriate length.
Notice: Do not tamper with the air valve on the low side of the storage tank.
It has been factory charged to 8psi and covered with a black cap.
Install the Tank Valve & Tubing
Remove the blue cap on top of the tank to expose the threaded in/out
connection. Connect the tank ball valve by threading onto the fitting. Do not
over-tighten.
Notice: Do not add Teflon tape to the tank fitting. This will
prevent seals from engaging and may cause leaking.
Insert the tubing into the quick connect fitting on the ball valve.
Connect the other end of the tubing to the inlet tee of the post-carbon filter on the
RO system.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 14
Additional Point of Use Connection (Optional)
Notice: Ensure that all tubing and fittings used for RO product water are poly material, and
not copper. Due to RO product water being very pure, it can leach the minerals from
copper tubing which will cause a metallic taste in the water or ice and cause the
copper tubing to develop pinhole leaks over time.
An additional connection may be made to other equipment such as an icemaker, refrigerator, coffeemaker, or
other equipment. This requires an additional tee fitting and extra tubing. It is also strongly recommended to
install an in-line ball valve between the RO system and the equipment, to be closed during startup and
maintenance.
Suggested Parts
¼” Union Tee ¼” Tubing (10 Feet) ¼” In-Line Ball Valve
Part Number: PI0208S Part Number: TUBE-10FT-14-WH Part Number: PPSV040808
W
Installation
Cut tubing between the faucet and the outlet of the post-filter. Insert the line into both branches of the tee.
Run line from the stem of the tee to the equipment and connect according to manufacturer’s instructions.
Install the ball valve in an accessible location on the line by cutting the line and inserting the tubing into
both sides of the ball valve.
SystemMounting
Wall mounting is optional for this system. Dry wall anchors and screws may are included with the system, but
check for the appropriate mounting equipment needed for your mounting surface.
Mark screw locations at the desired positions. Use the two holes on the back of the RO System mounting
bracket for marker guides.
Screw the screws into the mounting wall on the marked positions. Use an anchoring device appropriate for
the type of material you are screwing into.
Hang the purification system onto the screws by the holes on the back of the unit.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 15
Turning the System On for the First Time
Make sure all water supply and drain line connections are secure and free from leaks.
Slowly turn on the cold water supply valve. Then slowly turn the feed valve counterclockwise until fully open
(the handle should be in line with the tubing as it enters the connection).
Check for leaks! If any leaks occur, turn off the cold water supply and feed valve, and fix the leaks as
needed. (Tighten nuts, re-seat quick connect tube connections, and/or apply more thread tape as needed.)
Turn storage tank valve one quarter turn counterclockwise to open the valve (the handle should be in line with
the tubing as it enters the connection).
Open the product water faucet and let the water flow until all the air has been expelled from the system. This
will take about an hour.
Close the product water faucet. In 30 minutes, check the system and connections for leaks and correct if
necessary.
Do Not Use the First Two Reservoirs of Water
Allow the reservoir to fill for 4-6 hours. Dispense this water to drain. This process
removes the factory installed sanitizing solution from the entire system and sends it to
the drain. Repeat this process one more time. Allow the tank to fill for 4-6 hours and
dispense this water to the drain. Do not drink this water!
Notice: Air bubbles may be present in the product water after initial system startup, causing
a milky color in the water. This is normal and safe to drink. The air bubbles will
disappear within a few days of regular use.
Notice: Check back frequently in the first 24 hours to ensure no leaking has occurred.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 16
Replacement Parts
Unopened filters can be stored for several years if kept in an airtight container to prevent them from absorbing
air. Store in a cool, dry, dark place (avoid heat and moisture contamination).
Sediment Pre-Filter,
5 Micron.
Stage 1
Model: H-F1005CF
Qty. 1 Per System
Replace every 3-6 months
Carbon Pre-Filter,
Extruded Carbon
Stage 2 & 3
Model: H-F2510AC
Qty. 2 Per System
Replace every 3-6 months
Replacement Filter Kits:
RFK-5: Pre & Post Filters
RFK-5-PRE: Pre-Filters Only
Membrane Element
Stage 4
Model: M-T1812A100
Qty. 2 Per System
Replace every 12 months
Carbon Post-Filter,
GAC Inline
Stage 5
Model: H-F1032-43A
Qty. 1 Per System
Replace every 3-6 months
Other Replacement Components
Part Image
H-H14FWWQC
Filter Housing
Standard 10”
White, ¼” QC
PV2012PME
Membrane Housing
⅛” FNPT
H-S4010ANW
Storage Tank
3.2 gallon
Requires new tank valve:
PPSV500822W
H-R2068QC
50 GPD Flow Restrictor
H-R1000QC
100 GPD Flow Restrictor
H-J2021KW
Clip, Membrane Housing
to In-line Filter
H-J2025PW
Clip, Membrane Housing
to Bracket
Part Image
H-T5000
Faucet, Non-Airgap,
Long-Reach
H-V1050W-QC
Auto Shut-Off Valve
H-S3200TV
Tank Shut-Off Valve
(For tank included in
system)
H-V1010-38-12
3/8” Feed Connector
& Valve with ½”
Adapters
H-D3000M
Drain Saddle
H-C9200FWWA
Wrench for Filter
Housing
H-H14FWWQC-OR
O-Ring for Filter
Housing.
Part Image
TUBE-10FT-14-WH
White Tubing
10 foot pack
PN-4-P
¼” Hex Nipple
(connects filter housing
to filter housing)
F-4MBT44QC
¼” Male to ¼”QC
Branch Tee (for post
filter inlet)
PI480822S
Elbow Fitting
¼” MNPT × ¼” QC (for
filter housings & post
filter outlet)
PI480821S
Elbow Fitting
⅛” MNPT × ¼” QC (for
membrane housing)
H-V1003
Check Valve, installed
in ¼” Elbow
(membrane permeate)
H-B2031W
Mounting Bracket

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 17
System Maintenance
Notice: If your RO system is connected to an icemaker or other equipment, you must turn off
the connection to the equipment before performing any maintenance.
Filter Replacement Instructions
All pre and post-filters should be replaced every 3-6 months.
Before starting, shut off cold water supply to unit. Lift the handle on the faucet to drain out the storage tank
completely and allow the system to stand for 10 minutes in order to fully decompress the tank, reserving some
of the RO water to use to rinse the filter housings. Leave the faucet open until the filter change is complete.
1. Remove pre-filters from filter housings. Use a filter wrench if the housings are too tight.
2. Discard used filters, but save o-rings for re-use.
3. Clean inside of all housings with a mild soap solution, and then rinse with RO water.
4. Lubricate the o-ring and replace in filter housing.
5. Insert the new filters into the appropriate housings and replace the housings onto the system.
6. Disconnect the post-filter by removing the fittings on either end. Replace with new post-filter and re-use
the existing fittings. (Feed end tee is connected by a short length of tubing, remove this and use to connect to new filter.)
7. (If replacing the membrane as well, skip this step and proceed to the next section.) Follow the normal
Start-up Procedures. (Drain the first tank of water after changing the filters before drinking.)
Membrane Replacement Instructions
The membrane should be replaced every 1-2 years, depending on the water quality.
Before starting, shut off the cold water supply to the unit. Lift the handle on the faucet to drain out the storage
tank completely and allow the system to stand for 10 minutes in order to fully decompress the tank. Leave the
faucet open until the membrane change is complete. Repeat steps 1-7 for each membrane element.
1. Unscrew the fitting to the cap of the membrane housing. Use the membrane wrench if the cap is too tight.
2. Using pliers, pull out the old membrane from the housing.
3. Remove the new membrane from its bag.
4. Insert the membrane in the housing in the same direction as the old membrane.
5. Push the membrane firmly into the housing until it seats on the far end.
6. Screw the housing cap back on, making sure the o-ring is positioned correctly.
7. Screw the fitting (with tubing) back onto the housing.
8. The system is ready. Turn on the water supply. Check for any leaks.
9. Drain the first two tanks of water before drinking.
Sanitizing
We recommend sanitizing the system at least once a year. This can be done while changing your filters. Shut
down the system. If you have an icemaker hook-up installed, be sure the ball valve in the line to the
refrigerator is in the closed position during this procedure. Open the faucet to drain the system, including the
tank. Remove the pre-filter cartridges and RO Membrane from the system, leaving the old post-filter cartridge
in place. Wash the internal filter housing & membrane housing areas with warm soapy water and rinse well to
remove the soap. Pour about ¼ teaspoon of Hydrogen Peroxide or household bleach into each filter housing
and replace housings on the RO system. Open the feed water valve and open the RO faucet until water flows
freely from the spout. Close the faucet and hold the solution in the system for a minimum of 10 minutes.
Drain the tank completely, close the faucet to allow tank to fill again, and then drain again. Replace filters and
membrane as indicated in the replacement instructions. The post filter should be changed after sanitizing the
system.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 18
Troubleshooting Chart
Symptom Possible Cause Remedy
No water in the storage
tank
Filter Cartridges have
clogged.
Replace filter cartridges as indicated in
maintenance section.
System Feed Valve and/or
Tank Valve Closed
Ensure the cold water supply, feed valve, and
tank valve are in the fully open position.
No pressure in storage tank. Check pressure with pressure gauge. Refill or
reduce pressure to max 8 psi. Note: Tank must
be empty of water when checking the air
pressure.
Automatic shut-off valve
malfunctioning.
Check lines to valve for correct hook-up and
check water running into the drain. Replace if
necessary.
Kinked lines. Straighten lines if necessary.
Getting low flow Incoming water pressure too
low.
Check source of feedwater (city water, well
water, etc.) for pressure. A booster pump may
be required.
Change in feedwater
temperature.
The reverse osmosis membrane used in your
unit is rated at 77ºF and 60psi. Water
production will decrease approximately 1.5%
for each degree that your incoming water is
below 77ºF. It may be necessary to change to
a higher flow membrane (and flow restrictor).
Storage tank pressure is too
low.
Check pressure with gauge and refill to
maximum 8 psi. Note: Tank must be empty of
water when checking the air pressure.
Filters are clogged. Replace Filters.
Water Leaking from Fittings Tubing not properly seated Remove tubing. Check that the tubing cut is
completely straight and re-seat tubing. (Page 8)
Water leakage at filter
bowls
Filter bowls are loose. Retighten.
Burr on edge of filter bowl. Remove burr with emery cloth or sand paper.
O-Ring in filter bowls is
missing, damaged, or not
sealed properly
Replace or position correctly.
Water backing up to air gap
in faucet (Systems w/ air
gap faucets only)
Line is clogged. Clean out the line.
Line is too long. Must be as short and straight as possible.
Drain line is clogged. Disconnect 3/8” dia. Line and clean out with
probe or by flushing.
Faucet spout is dripping Handle sticking or worn. Replace the faucet
Milky colored water Air in the system Air in the system is normal after startup of the
RO. Water should lose the milky look within a
few days of normal usage.

Installation and Service Manual – Under-the-Counter Point of Use 5 Stage Reverse Osmosis System
Copyright © 2023 Applied Membranes, Inc.
All Rights Reserved.
Page 19
RO BASICS
This section provides basic concepts on how an RO system works, how it performs in relation to your house’s
water condition. We hope this information helps keep your RO system running at top performance for years to
come.
Basic Terms
GPD = Gallons Per Day (flow rate)
PSI = Pounds per Square Inch (pressure)
TDS = Total Dissolved Solids (contaminants)
PPM = Parts Per Million (unit used to measure TDS level)
TDS Meter = A digital meter for measuring the TDS level in the water
Flow Diagram for 5-Stage or 6-Stage RO System:
The diagram below shows how water flows through the RO system from Feed point to Output point.
Input water starts from Main Water Supply, going through stages 1, 2, 3 pre-filters, then enters the stage-4
membrane. Product (filtered) water from the membrane feeds the storage tank; the “brine water” from the
membrane drains out through the drain line. Product water from the tank passes through stage-5 filter (then
optional stage-6 filter) before reaching the dispensing faucet.