Reo-Pure 90403 Instruction manual

REVERSE OSMOSIS SYSTEM
Installation, Operation & Maintenance Manual
EC 4-Stage RO System
IMPORTANT
Please read this manual carefully before proceeding with installation or maintenance. All work must be conducted by a trained
water treatment professional, familiar with the equipment. Failure to follow instructions or operating parameters, may lead to
personal injury or damage to the equipment and/or personal property. The information provided in this document is solely for
informative purposes. It is the user’s responsibility to ensure the appropriate installation, usage, and maintenance of all equipment.
Do not use this system with water from non-potable water sources, microbiologically unsafe water, or water of unknown quality
without adequate disinfection before and after the system. Feed water parameters must always be followed.
All RO systems contain replaceable water treatment components critical for effective performance. It is the user’s responsibility to
regularly inspect the system and test the product water to verify satisfactory performance. All components should be replaced at the
Manufacturer’s recommended time, or when the component shows signs of needing replacement, whichever occurs first. A leak
detection and supply water shutoff device must always be installed and operational. Failure to take necessary precautions and
properly maintain this RO system may cause a health risk, lead to personal injury, and/or cause damage to the equipment and
personal property.
To maintain the manufacturer’s warranty, an operating log must be maintained and copies will need to be sent to your local dealer
or distributor for review.
Save this manual for future reference.
EC3SUM-181028

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Please fill out the following information at the time of installation.
This information may be important for future reference.
Model:
__________________________
Serial Number:
__________________________
Install Date:
__________________________
Sold By:
__________________________
Installed By:
__________________________
Service Phone Number:
__________________________
This Manual is for the Following Models:
90403 –Jaco Style Model
90514, 90507, 90515
90404 –John Guest Style Model
90516, 90504, 90517

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Table of Contents
Section 1: Introduction...............................................................................................................................................3
Section 2: Important Background Information ............................................................................................................4
What is Reverse Osmosis (RO)................................................................................................................................4
How the Reo-Pure™ RO System Works ...................................................................................................................4
Importance of Pre-Filtration...................................................................................................................................4
Automatic Shut-Off Technology..............................................................................................................................4
Factors That Affect System Performance ................................................................................................................4
How to Make a Proper Quick-Connect Tubing Connection.......................................................................................5
How to Make a Proper Compression Nut Tubing Connection...................................................................................5
Section 3: System Specifications.................................................................................................................................7
Design Specifications..............................................................................................................................................7
Feed Water Parameters .........................................................................................................................................7
Section 4: Getting to Know Your System .....................................................................................................................8
Section 5: Flow Diagram...........................................................................................................................................10
Section 6: Installation Instructions............................................................................................................................10
What You’ll Need.................................................................................................................................................11
What’s Included...................................................................................................................................................11
Step 1: Select an Installation Site..........................................................................................................................12
Step 2: Faucet Installation ....................................................................................................................................12
Step 3: Install Valve to Feed Water Supply............................................................................................................13
Step 4: Install the Drain Saddle Clamp ..................................................................................................................15
Step 5: Install the Tank Shut-Off Valve..................................................................................................................15
Step 6: Install the RO Membrane..........................................................................................................................16
Step 7: Install the Filter Cartridges........................................................................................................................17
Step 8: Mount RO System.....................................................................................................................................17
Step 9: Make Tubing Connections.........................................................................................................................17
Step 10: Ice Maker Connection (Optional).............................................................................................................20
Step 11: Record Information in a System Maintenance & Repair Log .....................................................................20
APPENDIX: Basement Installations .......................................................................................................................21
Section 7: Start-Up Procedure ..................................................................................................................................23
Section 8: Maintenance Procedures..........................................................................................................................24
Filter Cartridge and RO Membrane Replacement ..................................................................................................24
Replacing Filter Cartridges....................................................................................................................................24
Changing the RO Membrane ................................................................................................................................25
Sanitize the RO System and Storage Tank .............................................................................................................26
Section 9: RO Service Record Information.................................................................................................................27
Section 10: System Troubleshooting .........................................................................................................................28
Section 11: Product Warranty...................................................................................................................................30
Section 12: Replacement Parts List ...........................................................................................................................32

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Section 1:Introduction
Thank you for choosing this Reverse Osmosis Drinking Water System! Every Reo-Pure™ RO System incorporates years
of experienced engineering, dedicated workmanship, and high-quality components. Each system is built with pride and
ensures superior performance. We are confident you will find this system to have quick and simple installation, hassle-
free maintenance, and years of reliable, trouble-free operation.
Proper installation and maintenance of your new RO System is very important. Please read and follow this instruction
manual carefully before attempting installation. Failure to do so could result in personal injury or damage to the
equipment and/or personal property. As with all products, the customer has the responsibility to ensure that the RO
System is operated under proper conditions and within design limitations.
IMPORTANT: Improperly installed systems could result in water damage due to leaks or flooding. System installation
must also always comply with local and state laws and regulations. Proper installation of this system requires familiarity
with state and local codes, standard sink plumbing, and proper use of the necessary tools. If you are not familiar with
any of these, or have difficulty with the installation of this system, please contact an experienced water treatment
professional to perform the installation.

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Section 2: Important Background Information
What is Reverse Osmosis (RO)
In the reverse osmosis process, water is forced under pressure through a
semi-permeable membrane to reduce the dissolved mineral content of the
water. The membrane allows water molecules to pass through, but
blocks/hinders the passage of dissolved substances and suspended particles.
This process reduces the levels of dissolved salts, minerals, and suspended
particles, while improving the taste, odor, and clarity of the water.
Certain contaminants found in water are measured as Total Dissolved Solids
(TDS). Unlike the more common standard filtration systems, reverse osmosis
systems divide the feed water into two streams: product water (“permeate”)
and drain/reject water (“concentrate”). The product water is the desired
outcome of the RO System –much cleaner and fresher tasting water! The
drain/reject water is vital for carrying away the dissolved salts, minerals, and
suspended particles. Unlike conventional filtration systems, the majority of
contaminants removed from your water are not held onto within the system,
but instead flushed away.
How the Reo-Pure™ RO System Works
Your new Reo-Pure™ RO System uses a combination of filtration technologies to reduce unwanted contaminants in a water supply.
The model you have chosen incorporates a series of stages to give you the most out of your RO System! For more information on
your unique model, please refer to the “Getting to Know Your System” section to better understand the different stages that work
together in making your RO System great!
Importance of Pre-Filtration
Pre-treatment in a RO System is crucial. By running the feed water through the appropriate pre-filter, the RO membrane is protected
against permanent premature fouling damage. The filter cartridges in this system must be replaced on a regular basis to maintain
efficiency and to ensure high water quality. Any significant change in performance of the system should be investigated promptly to
avoid secondary damage or deterioration to other parts of the system.
Automatic Shut-Off Technology
Every RO System comes equipped with an automatic shut-off valve. This component closes when it senses that the storage tank is
full –immediately shutting off the water supply. As a result, the production of water is paused, and excess reject water is prevented
from draining.
Factors That Affect System Performance
Feed Water Temperature: The ideal water temperature for a RO System is 77°F. The quantity of product water produced increases
with higher water temperatures and decreases with lower water temperatures. Temperatures below 40°F can damage the
membrane, and temperatures above 90°F can cause rapid deterioration of the membrane.
Feed Water Pressure: The greater the water pressure, the better water quantity and quality the system will produce. Water
pressure of 65 psi is ideal.
Total Dissolved Solids (TDS): The higher the amount of dissolved contaminants in the feed water, the lower the quantity of water
produced. A high level of TDS can be overcome with a booster pump.
Bacteria: When RO Systems are used, tested, or operated intermittently, they may be exposed to bacteria. Following a shut down
or storage period, the RO System and storage tank should be sanitized.
Fouling or Surface Coating of the Membrane: Membrane fouling is a common problem resulting from salts, hardness, iron, etc.
collecting on the membrane surface. The pores and channels of the membrane become plugged, reducing the water production
rate. Pre-treatment equipment, such as a water softener, iron filter, and/or turbidity filter, will reduce membrane fouling and extend
its life.

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How to Make a Proper Quick-Connect Tubing Connection
If you have the EC-John Guest model, then your RO System has been designed with the most reliable quick-connect fittings available
(see next section for information on compression nut fittings). It is important that the manufacturer’s instructions are followed
carefully to ensure a leak-free connection.
To make a connection, the tube is simply pushed in by hand; the unique patented John Guest collet locking system then holds the
tube firmly in place without deforming it or restricting flow.

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How to Make a Proper Compression Nut Tubing Connection
If you have the EC-Jaco model, then your RO System has been designed with the most reliable compression nut fittings available (see
previous section for information on quick-connect fittings). It is important that the manufacturer’s instructions are followed
carefully to ensure a leak-free connection.
Always make sure to cut tubing ends square. The cut end must be free of burrs and sharp edges. For soft thin walled plastic tubing,
we recommend the use of a tube stop/insert.
1) Press tube stop/insert into inside end of tubing.
2) Insert the tubing through the back of the nut all the way through the nut assembly to the tube stop in the fitting body. If the
tubing does not enter the nut easily, loosen the nut one turn and then insert the tubing all the way to the tube stop.
3) Turn the nut hand tight.
4) Wrench tighten the nut 1-1/2 to 2 turns.
5) All nuts must be retightenened when the system reaches projected operating temperature.
NOTE: It is not necessary to fully remove the fitting nut for application. Merely loosen the nut enough to insert tubing all the way
into tube stop and tighten nut.

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Section 3:SystemSpecifications
Design Specifications
Production:
RE-1812-25 –25 GPD*
RE-1812-50 –50 GPD*
RE-2012-100 –100 GPD*
RE-2012-LP –150 GPD*
Rejection (NaCl):
96-98%
Recovery:
25%
Feed TDS:
200 mg/L NaCl
Feed Pressure:
65 psi
Feed Temperature:
77°F (25°C)
Feed pH:
6.5-7.0
*Actual system production may vary depending on incoming water temperature and chemistry.
Permeate flow rate for each element may vary but will be no more than 15%.
Feed Water Parameters
Temperature:
Max 90°F (37.8°C), Min 40°F (4.4°C)
Pressure:
Max 80 psi, Min 45 psi
Iron:
Max 0.5 ppm
Hardness:
Max 10 gpg, or 170 mg/l
Chlorine:
< 0.1 mg/L.
Total Dissolved
Solids (TDS):
Max 1,000 ppm
Turbidity:
Less than 1.0 NTU
pH:
3.0-11.0 (optimum rejection at 6.5 –7.0)
Manganese:
Max 0.05 ppm
Hydrogen
Sulfide:
0.00
Bacteria:
Feed water must be potable.
Note: The water pressure in your home should be tested over an extended period to attain an accurate pressure reading. If possible
for water pressure to exceed 85 psi, a pressure regulating device must be used. If the water pressure falls below 45 psi, a booster
pump may be required. A feed water pressure below 45 psi will severely lower the efficiency of your RO System, and may inhibit the
automatic shutoff from properly closing.
Note: The system will operate with hardness over 10 grains, but the RO membrane life may be shortened. The addition of a water
softener will extend the life of the RO membrane.
IMPORTANT: Do not use this system with water that is microbiologically unsafe or of unknown quality without adequate disinfection
before or after the system.

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Section 4: Getting to Know Your System
It is important to familiarize yourself with your new Reverse Osmosis System.
Shown below is a front and top view of your Reo-Pure™ RO System. The stages and main components identified. These components
will be referenced throughout the manual. Noting their location will assist you with the installation and maintenance of the RO
System.

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Stages of Filtration
Get to know the stages of filtration your water is going through. Below is a visual representation of each stage on your Reo-Pure™
RO System.

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Section 5: Flow Diagram
The actual flow diagram of every EC Series RO System may slightly vary based on the number and types of stages. However, the
general concept of the feed water being pre-treated and split into two streams (Product and Reject) after the membrane is
consistent with every model.
Provided below is a detailed flow diagram for your Reo-Pure™ RO System. Please take the time to familiarize yourself with the
placement of major components and the correct flow of water through them. Understanding this will be very important for the
installation and maintenance of your RO System. It is also recommended to reference this diagram again when making your tubing
connections. This will ensure proper identification and placement of connections.

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Section 6: Installation Instructions
What You’ll Need
Extension work-light
Battery operated drill and drill bits
1-1/4” Hole saw bit/punch for faucet
Screw Drivers (Phillips & flathead)
Pliers (needle nose & adjustable)
Utility Knife
Tubing Cutter
Teflon Tape
Safety Glasses
Food Grade Lubricant
TDS Test Meter
What’s Included
MAJOR COMPONENTS
Reo-Pure™
RO System
Sediment
Filter Cartridge
Qty: 1
Carbon
Filter Cartridge
Qty: 1
Carbon
Filter Inline
Qty: 1
RO
Membrane*
Dispenser
Faucet*
Storage
Tank*
PARTS PACKET
Tank
Shut-Off
Valve
Faucet
Connector
Filter
Housing
Wrench
1/4” & 3/8”
Tube Insert
Self-Piercing
Saddle Valve
(Optional)*
Drain Saddle
Clamp*
1/4”
Red Tubing
3/8”
Blue Tubing
John Guest®
Angle Stop
Adapter Valve
(Optional)*
Capillary
Drain Flow
Restrictor*
1/4”
Black Tubing
3/8”
Yellow Tubing
Mur-lok®
RO-Pal
Connector
(Optional)*
NOTE: If an air gap faucet is not used, reject water must go to drain through an anti-siphon air gap. Please check local plumbing
codes.
*Based on order customization, parts may not be included.

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Step 1: Select an Installation Site
This RO System was designed compact enough to fit under most kitchen sinks. However, the RO System may easily be installed in a
basement, closet, crawl space, or wherever it’s most convenient. If a basement installation is selected, note that additional tubing,
hardware, and fittings may be needed, and that a hole must be made from inside the cabinet through the floor to the basement.
When determining the best location to mount the RO System, there must be access to a cold water line and a drain line. Never
install in an area of the home where temperature is freezing as it may result in damage to the system. The water storage tank may
weigh over 35 pounds with a 4 gallon tank, when full of water. Be sure to place it on a firm, level surface.
The exact placement of the RO System and its accessories will vary with each installation. The installer and customer must
coordinate together on determining the most convenient placement of the dispenser faucet, RO System, and storage tank.
Always consider easy maintenance and servicing when choosing an installation site. It’s recommended to mount the RO System at
least 4” off the ground. This will allow ample room to remove the filter housings. However, if the mounting wall is not solid, the
system may sit on the floor with screws used to keep it against the cabinet/wall in a vertical position.
Consideration for an ice maker or additional connections should also be made at this time. Extra routing, tools, fittings, and tubing
may be required.
IMPORTANT: For basement installations, please see the APPENDIX at the end of this section for additional information.
Step 2: Faucet Installation
When selecting a location for your faucet, be sure the stem of the faucet will be accessible for making all connections. Always take
special care and consideration if drilling a new hole for a faucet. We cannot accept any responsibility for damage to sinks or
countertops when you are drilling a hole for your dispenser faucet. The following are only guidelines to aid with the installation for
your dispenser faucet.
Under the counter installations generally require that the faucet be installed with the air gap module. In basement installations, the
air gap module can be eliminated only if one is provided elsewhere in the drain line.
NOTE: The Uniform Plumbing Code dictates that there must be an air gap between the RO line and the waste drain. It is the
responsibility of the installer to ensure compliance with all State and Local laws and regulations
IMPORTANT: For basement installations, please see the APPENDIX at the end of this section for additional information.
Drill Hole for Faucet
Most sinks are predrilled with a hole that’s commonly used for a sprayer or soap dispenser. This could be used for a RO faucet
instead, with no need to drill a new one. However, if your installation site does not have a properly sized hole, or it’s already being
used, an additional hole will need to be drilled. Always check below the sink to make sure nothing will interfere when drilling, and
that a 2” flat surface is available on your sink for mounting the faucet. The faucet should be aesthetically located, positioned to flow
directly into the sink, and able to swivel freely for convenience.
Drilling a Stainless Steel Sink
The faucet opening should be centered between the back splash and the edge of the sink, ideally on the same side as the
vertical drainpipe.
1) Mark the center and drill a 1/4” pilot hole.
2) Continue to enlarge hole with increasingly larger drill bits until the hole is 1/2” in diameter.
3) Smooth any rough edges and sweep away chips.
Note: Air Gap faucets require a 7/8”hole.
Drilling a Porcelain Sink
Porcelain sinks are extremely hard and can crack or chip easily. Always use proper tools and extreme caution when drilling.
1) Place a piece of masking tape over the area to be drilled to help avoid chipping.
2) Mark the center of the hole on the tape.

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3) Drill a pilot hole using 1/4” carbide tipped pilot drill bit.
4) Drill at a slow speed to avoid cracking and chipping.
5) Using a porcelain cutter, drill out 1/2” hole. Keep the drill speed on the slowest speed and use lubricating oil to keep the
drill bit cool.
Note: Air Gap faucets require a 7/8” hole.
6) Remove all sharp edges with a file.
7) Make sure the surroundings of the sink are cooled before mounting the faucet.
Mount the Faucet
1) Slide the 1-1/4” faceplate, rubber washer, and the 1-7/8” rubber gasket onto the faucet stem.
2) Place the stud through the hole in the sink or counter top, and properly position the faucet.
3) From under the counter, slide on the black plastic washer and the metal star washer, and screw
on the faucet lock nut.
4) Tighten securely.
5) At the bottom of the faucet stem, securely tighten the John Guest® faucet connector (provided
in the Parts Packet with your system).
Note: Any remaining faucet parts are replaced by the John Guest® faucet connector and can be
discarded.
Step 3: Install Valve to Feed Water Supply
Locate the cold water supply shut-off valve, and turn it off. Open the cold water sink faucet to release any water and pressure. On
single handled faucets, the hot water may have to be turned off to prevent any hot water crossover. If water continues to come out
of the faucet, with the valve turned off, the main house line may need to be turned off.
The following instructions describe the installation of three different types of valves that can be used on a feed water supply line.
Please take note of which valve you are using, follow those instructions carefully, and skip the step details for the other valve
options.
CAUTION: Do not connect the feed water valve to the hot water pipe. Hot water will severely damage your RO membrane. The
connection must be made with the cold water line.
If Using John Guest® Angle Stop Adapter Valve (Optional)
The John Guest® Angle Stop Adapter Valve has been designed to easily tap
into the cold water supply, right in between the cold water supply valve and
the existing riser faucet line. Installation is fast and easy, without the need
to pierce the feed line.
1) Be sure the water supply is off.
2) Disconnect the riser from the brass/chrome cold water supply valve.
3) Visually inspect the angle stop adapter valve to ensure that the sealing gasket is
properly seated in the female threads.
4) Screw and securely tighten the angle stop adapter valve to the cold water supply
valve.
5) Screw and securely tighten the riser to the angle stop adapter valve.
6) Leave the valve closed at this time.

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If Using C-Style Self-Piercing Saddle Valve (Optional)
The C-Style Self-Piercing Saddle Valve is a great option for copper piping, but can also be used with hard steel, iron,
brass, or CPVC piping. The simple mechanism fits 3/8” and 5/8” copper tubing. When the hand crank is turned, its ease-
of-use technology pierces the cold feed water pipe. This opens the feed water line to its 1/4” compression nut
connection. Self-Piercing mechanism is not intended for flex line tubing.
Installing on Soft Copper Pipe
1) Be sure the water supply is off.
2) Turn the valve handle counter clockwise until the lance (sharp point) does not protrude from the black gasket.
3) Position the valve around the cold water supply line (copper pipe) and insert the back plate. If the pipe is 3/8” in diameter,
the small groove of the back plate must rest against the pipe. If the pipe is
5/8” in diameter, the large groove must be facing the pipe.
4) While holding the valve in place, tighten the screw.
5) To pierce the pipe, turn the valve handle clockwise.
6) When the valve handle becomes firmly seated, the pipe has been pierced
and the valve is closed.
7) With the saddle valve still closed, turn on the sink faucet and water supply.
8) After allowing the water to flush away debris from the installation, turn off
the faucet and check the valve for leaks. Leave the valve closed at this
time.
Installing on Hard Steel, Iron, Brass, or CPVC Pipe
1) Be sure the water supply is off.
2) Drill a 3/16” hole in the cold water supply line. A battery-powered drill should be used to avoid electric shock. Be
extremely careful not to drill through the opposite wall of the pipe.
3) Turn the valve handle until the lance (sharp point) appears no more than 3/16” beyond the rubber gasket.
4) Place the lance over the hole so that it slides into the hole.
5) If the pipe is 3/8” in diameter, the small groove of the back plate must rest against the pipe. If the pipe is 5/8” in diameter,
the large groove must be facing the pipe.
6) While holding the valve in place, tighten the brass screw.
7) Turn the valve handle clockwise until it is firmly seated and the valve is closed.
8) With the valve closed, turn on the sink faucet and water supply.
9) After allowing the water to flush away debris from the installation, turn off the faucet and check the valve for leaks. Leave
the valve closed at this time.
If Using Mur-lok® RO-Pal Connector (Optional)
The Mur-lok® RO-Pal Feed Water Connector is a reliable choice for rigid piping. It works great with copper,
chrome, CPVS, and PEX tubing. Easy installation in five minutes or less, and has an all plastic design to eliminate
corrosion.
1) Be sure the water supply is off.
2) Ensure the pipe or tubing it RIGID.
3) Identify a smooth, even surface, and cut a section of pipe where the RO-Pal will be installed.
4) Remove all burrs from pipe using a sandcloth.
IMPORTANT: Do not use any sealants or Teflon tape on any of the RO-Pal’s fittings.
5) Slide narrow end of nut onto pipe, inside threaded end facing tee.
6) Slide flat side of grab ring toward nut.
7) Push wide end of cone toward grab ring. Make sure narrow portion of cone has 1/4” to 1/2” of
pipe exposed. If cone slides on with difficulty, apply a SMALL amount of DOW III Silicone Lubricant
to the end of the pipe.
8) Slide nut and grab ring towards cone and hand tighten onto tee.
9) Turn nut by hand until tight. Additionally, tighten nut with wrench 1 to 1-1/2 complete turns. Be
sure not to over tighten.
10) Install other nut in same manner as steps 4 through 9.
11) Leave the valve closed at this time.

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Step 4: Install the Drain Saddle Clamp
Drain saddle clamps are used to direct the reject water of a RO System to drain. The provided drain saddle clamp is designed for a
standard 1-1/2” OD drainpipe. Always inspect the condition of drainpipes before install and ensure they are not thin and frail. Drain
saddle valve should not be installed near the garbage disposal; installation must be on the opposite pipe and above the cross bar
pipe.
IMPORTANT: Drain saddle clamps are available with 1/4” and 3/8” tubing connections. Most air gap faucets require a 3/8” drain
connection, while non-air gap faucet systems use a 1/4” drain connection. Identify your drain lines and confirm that your drain
saddle clamp has the appropriate connection size.
IMPORTANT: For basement installations, drain saddle clamps may not be needed. Please see the APPENDIX at the end of this
section for additional information.
CAUTION: Never install the drain saddle valve near the garbage disposal drainpipe. Backpressure caused by either unit may back
water up into the system.
1) Place the small square black felt gasket, with a circle cut out of the middle,
on the inside of the drain saddle. Peel off the sticky tape backing and
adhere it to the inside of the drain saddle.
2) Position the drain saddle around the drain pipe at least 1-1/2” above the
nut of the P-trap, to allow for the removal of the P-trap if necessary. Once
in position, securely tighten the saddle clamp to the drainpipe.
3) Insert a 1/4” drill bit into the opening of the drain saddle and drill a hole in
the drainpipe. Be extremely careful not to drill through the other side of
the pipe.
4) Attach the black compression nut to the drain saddle, but do not tighten at
this time.
Step 5: Install the Tank Shut-Off Valve
Locate the John Guest® tank shut-off valve included in the Parts Packet shipped with your system.
1) Wrap the male pipe threads (clockwise direction) on the top
of the tank with Teflon tape.
2) Hand-tighten the tank shut-off valve to the top of the tank.
Be sure it is tight, but do not over-tighten.
3) Turn the tank valve to the closed position for now.
4) For optimal flow, position the tank within 10 feet of the
faucet.
5) Check the storage tank pre-charge pressure at the stem near
the bottom of the tank. Tank pressure, when empty, should
be 5 to 7 psi.

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Step 6: Install the RO Membrane
While some models may have the RO membrane pre-installed, it’s important to verify this to ensure proper system function.
1) Carefully un-snap the white horizontal membrane vessel from the clips mounted on the metal bracket.
2) Disconnect the tubing from the fitting on the threaded end cap of the vessel. To remove the tubing:
a. John Guest Fitting –push the collet against the fitting and pull on the tubing at the same time.
b. Jaco Fitting –unscrew the compression nut until tubing pulls out.
3) Remove the end cap by turning counter clockwise to loosen.
4) Remove the new RO membrane from the plastic bag. Note: If included and not already installed, flow restrictor may be in
a separate bag and taped to outside of the membrane bag; set aside flow restrictor for later installation –do not discard.
5) Lubricate the o-rings on the product water tube and the brine seal with a clean coating of food grade silicone, or water-
soluble lubricant, canola oil, or vegetable oil. DO NOT use petroleum-based lubricants, such as Vaseline.
6) Gently glide the membrane (o-ring end first) into the membrane vessel.
7) Once the membrane has been inserted into the vessel, you must take your thumb and firmly push to properly seat the
membrane. To be properly seated, the end of the product water tube must be pressed all the way against the end of the
vessel, as shown in the diagram below:
8) Turn the end cap back onto vessel and reconnect the tubing. Snap the membrane vessel back into the plastic clips.

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Step 7: Install the Filter Cartridges
While some models may have filter cartridges pre-installed, it’s important to verify this in order to prevent permanent damage to RO
membrane upon start-up.
1) Using the filter-housing wrench provided with the RO System, unscrew the filter housing
sumps.
2) If not already installed, please remove the filter cartridges from their packaging, and insert the
filter cartridges into their appropriate housing sump.
IMPORTANT: Your RO System may be suitable for a variety of filter cartridges. Always ensure
that the appropriate filters are installed for proper pre-filtration.
3) Make sure that they slip down over the standpipe in the bottom of the filter housing sumps.
4) Verify that the o-ring is properly seated in the groove of the housing sump.
5) Turn the sumps, with the cartridges inside, back onto the appropriate cap –designated by the
corresponding label. Firmly tighten, but do not over tighten.
Step 8: Mount RO System
The mounting bracket of the RO System, has pre-drilled slots for easy mounting.
Depending on the location chosen, additional support may be needed to provide a
firm and solid mounting of the system. To allow for future system maintenance,
ensure there’s at least 4” from the floor.
IMPORTANT: For basement installations, please see the APPENDIX at the end of this
section for additional information.
1) Using the bracket as a template, mark the mounting screw locations.
2) Drill 1/8” holes at each mark.
3) Install the screws and tighten them until the heads are about 1/8” from the
wall
4) Hang the RO System on the mounting screws and hand- tighten up against
the wall.
5) Keep the system in place while making the tubing connections.
Step 9: Make Tubing Connections
Complete all prior steps before making the tubing connections. The RO System has colored plugs inserted into the fittings for easy
identification of the system connections. Please reference “Getting to Know Your System” and “Flow Diagram” in an earlier section
to more easily identify the correct placement of tubing.
IMPORTANT: For basement installations, please see the APPENDIX at the end of this section for additional information.
When making tubing connections, follow these helpful tips:
Attempt to keep tubing lines long enough to service the system later.
Do not cut tubing at an angle. Cuts should be perfectly square.
Insert tubing until it seats against stop inside of fitting. See “How to Make a Proper Quick Connect Tubing Connection” for more
information.
Only remove colored plugs from the fitting when you are ready to make the connection. Make one connection at a time,
removing the colored plugs as you go.
Feed Water Connection (RED Plug)
1) Go back to the feed water valve you chose to install on the cold water supply line.
2) Using the coil of RED 1/4” tubing provided with the Parts Packet, connect one end into the feed water valve. Ensure
connection is secure.
NOTE: If connection uses a compression nut, it’s recommended to use a 1/4” tube insert. The insert is pushed into the end
of the tubing, which supports it from collapsing.
3) Locate the Feed Water Inlet on your RO System. This should be identified with a 1/4” RED plug.

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4) Remove the RED plug from the RO System, and connect the other end of the 1/4” RED tubing into the fitting. Ensure
connection is secure.
NOTE: For basement installations, a longer length of feed water tubing may be needed.
Storage Tank Water Connection (YELLOW Plug)
1) Locate the Storage Tank Outlet, found on the side of the system. This should be identified with a 3/8” YELLOW plug.
2) Using the coil of 3/8” YELLOW tubing provided with the Parts Packet, remove the YELLOW plug and insert one end of the
tubing into the fitting. Ensure connection is secure.
3) Locate the Tank Shut-Off Valve that you installed in an earlier step. Connect the other end of the 3/8” YELLOW tubing to
this shut-off valve. Ensure the connection is secure.
Faucet Connection (BLUE Plug)
1) Locate the Faucet Outlet on your RO System. This should be identified with a 3/8” BLUE plug.
2) Using the coil of 3/8” BLUE tubing provided with the Parts Packet, remove the BLUE plug from the RO System, and connect
one end of the tubing into the fitting. Ensure connection is secure.
3) Locate the Faucet Connecter that was attached to the faucet stem in an earlier step. Connect the other end of 3/8” BLUE
tubing to this fitting. Ensure connection is secure.
IMPORTANT: The product water of any RO System should not flow through copper pipe, as the purity of the water will leach
copper into the water. This may cause an unpleasant taste in the water, and may also result in pinholes to form inside the pipe.
Drain/Reject Water Connection (BLACK plug)
For a RO System to function properly there must be a certain amount of backpressure on the drain/reject line. A drain line flow
restrictor is installed for this purpose. If drain line flow restrictor is missing, water will continually run to drain.
IMPORTANT
AN INTERNAL, CAPILLARY FLOW RESTRICTOR MUST BE INSTALLED WITH EVERY RO SYSTEM.
It is extremely important that the flow restrictor be installed correctly on the drain line tube.
See below diagram for location of flow restrictor.
Connect Drain Line Tubing:
1) Locate the Drain/Reject Outlet on your RO System. This should be identified with a 1/4” BLACK plug. 
2) Using the coil of 1/4” BLACK tubing provided with the Parts Packet, remove the BLACK plug, and insert tubing into the
Drain/Reject Outlet of the RO System. Ensure connection is secure. 
The remaining drain/reject connection instructions will vary depending on whether you have an air gap faucet or a non-air gap
faucet. Please only follow the steps that correspond to your type of faucet:
For a Standard Air Gap Faucet
1) At this point, one end of the provided 1/4” BLACK tubing should be connected to the Drain/Reject Outlet on your RO
System, with the desired Drain Flow Restrictor installed.
2) Connect the other end of the 1/4” BLACK tubing to the 1/4” barb connector, found at the bottom of the air gap faucet.
Ensure connection is secure.

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3) Using the coil of 3/8” BLACK tubing provided with the Parts Packet, connect one end to the 3/8” barb connection, found at
the bottom of the air gap faucet. Ensure connection is secure.
4) Locate the Drain Saddle Clamp (installed in a previous step) and unscrew the attached compression nut.
5) Slip the compression nut over the second end of the 3/8” BLACK tubing – making sure threads are facing the correct
direction.
6) Find the 3/8” tube insert that was enclosed with the Parts Packet. Place this insert inside the second end of the 3/8” BLACK
tubing.
7) Push the 3/8” BLACK tubing with insert into the Drain Saddle Clamp and tighten with wrench until tight. Ensure connection
is secure.
NOTE: When connecting the drain tubing, make a downward slope from the RO System to the drain saddle to allow for proper
drainage. Avoid bending or kinking the drain tubing.
For a Standard Non-Air Gap Faucet
1) At this point, one end of the provided 1/4” BLACK tubing should be connected to the Drain/Reject Outlet on your RO
System, with the desired Drain Flow Restrictor installed.
2) Locate the Drain Saddle Clamp (installed in a previous step) and unscrew the attached compression nut.
3) Slip the compression nut over the second end of the 1/4” BLACK tubing – making sure threads are facing the correct
direction.
4) Find the 1/4” tube insert that was enclosed with the Parts Packet. Place this insert inside the second end of the 1/4” BLACK
tubing.
5) Push the 1/4” BLACK tubing with insert into the Drain Saddle Clamp and tighten with wrench until tight. Ensure connection
is secure.
NOTE: When connecting the drain tubing, make a downward slope from the RO System to the drain to allow for proper drainage.
Avoid bending or kinking the drain tubing.