Aqua-Pure AP-RO5500 User Manual

Installation, Operation and Maintenance Instructions For:

Aqua-Pure® AP-RO5500 Reverse Osmosis
Drinking Water Filtration System

Installer: Please leave manual with homeowner.
Homeowner: Please retain for operation and future

maintenance instructions.

98-880043 1210

SAFETY INFORMATION

CAUTION

WARNING

CAUTION

Read, understand, and follow all safety information contained in these instructions prior to in­stallation and use of the AP-RO5500 Reverse Osmosis (RO) Drinking Water Filtration System.
Retain these instructions for future reference.

Intended use:

The Aqua-Pure® AP-RO5500 Reverse Osmosis Drinking Water Filtration System is intended for use in fi ltering
drinking water in residential locations and has not been evaluated for other uses. The system is typically installed
beneath or near a kitchen sink, and it is recommended that the installation be performed by a qualifi ed installation
specialist or a licensed plumber.

EXPLANATION OF SIGNAL WORD CONSEQUENCES

CAUTION

Indicates a potentially hazardous situation, which, if not avoided, could result in
death or serious injury and/or property damage.

Indicates a potentially hazardous situation which, if not avoided, may result in
minor or moderate injury and/or property damage.

Indicates a potentially hazardous situation, which, if not avoided, may result in
property damage.

WARNING

To reduce the risk associated with choking:

• Do not allow children under 3 years of age to have access to small parts during the installation of this product.

To reduce the risk associated with ingestion of contaminants:

• Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection be-
fore or after the system. Systems certifi ed for cyst reduction may be used on disinfected water that may contain
fi lterable cysts. EPA Establishment Number 070595-CT-001

To reduce the risk associated with a hazardous voltage due to an installer drilling through existing
electric wiring or water pipes in the area of installation:

• Do not install near electric wiring or piping which may be in the path of a drilling tool when selecting the
position to mount the fi lter bracket.

To reduce the risk associated with the ingestion of contaminants:

• An approved air gap must exist between the RO system reject drain line and the drain opening to comply
with state and local plumbing codes.

To reduce the risk of physical injury:

• All hydro-pneumatic pressurized tanks must have an appropriate pressure relief valve installed.

To reduce the risk associated with irritation from Sodium Metabisulfi te during installation:

• Sodium Metabisulfi te (CAS 007681-57-4) is used in a 1% preservative solution within the reverse osmosis
membrane.

• Do not put this system into service before the RO tank is fl ushed as specifi ed in the installation instructions.
Wear eye and face protection during installation.

• To request an MSDS relating to this product call 203-238-8965 or visit the web at http://solutions.3m.com/
wps/portal/3M/en_us/msds (click MSDS search). For emergencies, call 800-364-3577 or 651-737-6501 (24
hours).

1

WARNING

To reduce the risk associated with eye, skin and respiratory and digestive tract burns from
Calcium Hypo chlorite during installation:

• Calcium Hypo-chlorite (CAS 7778-54-3) granules are used for tank sanitization in this product.

• During installation, do not get in eyes or on skin or clothing. Do not ingest. Wear eye and face protection.
Keep out of reach of children.

• To request an MSDS relating to this product call 203-238-8965 or visit the web at http://solutions.3M.com/
wps/portal/3M/en_us/msds (click MSDS search). For emergencies, call 800-364-3577 or 651-737-6501 (24
hours).

To reduce the risk associated with ingestion of water contaminated with sanitizer:

• After installation, sanitizer MUST be fl ushed from the system before fi rst use as directed within the
installation instructions.

To reduce the risk of eye injury while drilling counter-tops for faucet installation:

• Safety glasses MUST be worn during sink hole drilling operations.

CAUTION

To reduce the risk associated with property damage due to water leakage:

• Read and follow all Instructions before installation and use of this system.

• Installation and Use MUST comply with all state and local plumbing codes.

• Protect from freezing. Drain fi lter when temperatures drop below 40°F (4.4°C).

• Do not install systems in areas where ambient temperatures may go above 110° F (43.3°C).

• Do not install if water pressure exceeds 125 psi (862 kPa). If your water pressure exceeds 80 psi, you
must install a pressure limiting valve. Contact a plumbing professional if you are uncertain how to check
your water pressure.

• Do not install where water hammer conditions may occur. If water hammer conditions exist you must install a
water hammer arrester. Contact a plumbing professional if you are uncertain how to check for this condition.

• Where a backfl ow prevention device is installed on a water system, a device for controlling pressure due to
thermal expansion must be installed.

• Do not install on hot water supply lines.
(37.8°C).

• Do not use a torch or other high temperature sources near fi lter or plastic fi ttings.

• Do not install in direct sunlight or outdoors.

• Do not install near water pipes which will be in path of a drilling tool when selecting the position to mount
the bracket.

• Ensure that the location and fasteners will support the weight of the system when installed and full of water.

• Mount fi lter in such a position as to prevent it from being struck by other items used in the area of installation
(waste baskets, etc).

• On plastic fi ttings, never use pipe sealant or pipe dope. Use PTFE thread tape only, pipe dope properties may
deteriorate plastic.

• Take care when using pliers or pipe wrenches to tighten plastic fi ttings, as damage may occur if over

-tightening occurs.

• Ensure all tubing and fi ttings are secure and free of leaks.

• Do not install unit if collet is missing. Contact 3M PI if collets are missing from any fi ttings.

• SHUT OFF FUEL SUPPLY TO WATER HEATER after water is shut off.

The maximum operating water temperature of this system is 100°F

2

CAUTION

• Shut off inlet water supply and depressurize system as shown in manual when changing cartridges or servicing

• All hydro-pneumatic pressurized tanks must have an appropriate pressure relief valve installed.

• The disposable fi lter cartridge MUST be replaced every six (6) months, at the rated capacity or sooner if a
noticeable reduction in fl ow rate occurs.

IMPORTANT NOTES

• Failure to follow instructions will void warranty.

• Allow a minimum of 2” (5 cm) clear space under fi lter to facilitate cartridge change.

• Do not crimp copper tubing.

3

Installation, Operation and Maintenance Manual

Introduction

This manual explains installation and operation of the Aqua-Pure® AP-RO5500 Reverse Osmosis (RO) Drinking
Water Filtration System. Please read each section of this manual carefully.

The Aqua-Pure AP-RO5500 RO Drinking Water Filtration System is designed to connect permanently to a home
plumbing system. To ensure that the installation conforms to your state and local plumbing codes, it is recommended
that the installation be performed by a qualifi ed installation specialist for RO drinking water fi ltration systems or a
licensed plumber.

IMPORTANT NOTES

• Failure to follow instructions will void warranty.

The RO module is shipped with a preservative solution. Make sure that you fl ush the system thorough­ly as directed before the fi rst use.

Installation Checklist and Table of Contents

1. Determine System Location ..................................................................................................................... 5

2. Prepare the Area for Installation ............................................................................................................... 5

3. Prepare the Filtration System for Installation ............................................................................................ 5

4. Install the Feed Water Valve and Tubing ................................................................................................... 6

5. Prefi ll and Sanitize the Storage Tank ........................................................................................................ 6

6. Install the Drain Connection...................................................................................................................... 7

7. Install the Faucet ...................................................................................................................................... 7

8. Make the Faucet Mounting Hole ............................................................................................................... 8

9. Mount the Faucet ...................................................................................................................................... 9

10. Make Initial Faucet Tubing Connections ................................................................................................... 9

11. Install the RO Assembly and Storage Tank ............................................................................................ 10

12. Make Final Tubing Connections .............................................................................................................. 10

13. Install Icemaker Hookup (optional) ......................................................................................................... 11

14. Install Filter Cartridges ........................................................................................................................... 11

15. Start Up the System ............................................................................................................................... 11

16. Installation Troubleshooting .................................................................................................................... 12

17. Maintenance ........................................................................................................................................... 13

18. Parts List ................................................................................................................................................. 15

19. Installation Diagrams (Figures 1-6) ......................................................................................................... 16

20. Limited Warranty ..................................................................................................................................... 19

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Installation, Operation and Maintenance Manual

1. Determine System Location (see Figures 1 and 2)

The Drinking Water Filtration System can be located under a sink or in a basement depending on space avail­ability and preference. If a basement installation is selected, additional tubing, hardware and fi ttings may be
needed and a hole will have to be made from inside the cabinet, through the fl oor, to the basement.

Space Requirements

14 5/8" NOM

6 1/2"

NOTE: Never install the fi ltration system in an area of the home
where the temperature may drop below 40° as damage to the
system will result.

The exact placement of the various components of the fi ltration
system will vary from installation to installation. The installer must
decide on where to place the faucet, storage tank and Reverse
Osmosis (RO) assembly by balancing convenience with ease of
installation and servicing.

CAUTION

To reduce the risk associated with property damage due to
water leakage:

• Protect from freezing. Drain fi lter when temperatures drop below
40°F (4.4°C).

• Do not install if water pressure exceeds 125 psi (862 kPa). If
your water pressure exceeds 80 psi, you must install a pressure
limiting valve. Contact a plumbing professional if you are uncer­tain how to check your water pressure.

Minimum Distance

Required To Remove

Cartridges

14 1/8" NOM

2"

Considerations for an icemaker or other remote hookup should be predetermined, including plumbing
routing and any additional tools, fi ttings and tubing that may be required.

Feedwater Conditions Parameter Feedwater Conditions Parameter

pH 4-11 Manganese < 0.05 ppm (mg/L)
Hardness < 350 ppm (mg/L) Hydrogen Sulfi de None allowable
Iron (FE) < 0.1 ppm (mg/L) Organics < 1 ppm (mg/L)
Free Chlorine Up to 3 ppm (mg/L) Turbidity < 1 NTU
TDS Up to 2,000 ppm
Temperature 40-100°F (4-38°C)

Min./Max. Feedwater pressure 30-125 psi (207 -862 kPa)

2. Prepare the Area for Installation

Determine where components will be located and how they will be mounted. Special mounting brackets
and hardware may be necessary to secure the system to a wall or ceiling joists if a basement installation is
called for. Inspect the cold water supply line and drain to determine if any additional fi ttings are required.

NOTE: It is a good idea at this time to check the condition of the under counter plumbing for any existing
or potential leaks.

3. Prepare the Drinking Water Filtration System for Installation

Open the shipping carton and remove components. Check that all of the installation parts are present which
include the reverse osmosis (RO) assembly, storage tank, faucet, installation hardware, and tubing located
in box under storage tank. (See Parts List on page 15)

If an optional percent rejection monitor is used, the probes should be installed at this time. Follow the in­structions that come with the monitor.

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Installation, Operation and Maintenance Manual

4. Install the Faucet Adapter and Tubing (see Figure 3)

Locate the cold water stem on the underside of the faucet fi xture. Unscrew the cold water feed tube from the
faucet stem. Locate the 1/4” Faucet Adapter that came with your Drinking Water System. Insert the black
gasket into the threaded adapter and tighten onto the Faucet Cold Water Stem under the sink, making sure
that 1/4” fi tting is accessible and not facing the wall. Make sure not to over tighten. Take the Cold Water Feed
Tube and attach to the Faucet Adapter, making sure not to over tighten.

Locate the 1/4” Faucet Tube and insert into the 1/4” Faucet Adapter. See Figure 4, Page 17.

5. Prefi ll and Sanitize the Storage Tank

Prefi lling the tank is always recommended so there is pressure to check for leaks and water to fl ush the
carbon fi lters. Tanks are furnished with a special disinfection capsule which sanitizes the tank when it is
fi lled with water. It is important to use a sanitizer when prefi lling tank so the solution can sanitize the tubing,
fi ttings and faucet at the time of installation and startup.

WARNING

To reduce the risk associated with eye, skin and respiratory and digestive tract burns from Calcium Hypo­chlorite during installation:

• Calcium Hypochlorite (CAS 7778-54-3) granules are used for tank sanitation in this product.

• During installation, do not get in eyes or on skin or clothing. Do not ingest. Wear eye and face protection. Keep

out of reach of children.

• To request an MSDS relating to this product call 203-238-8965 or visit the web at http://solutions.3M.com/wps/
portal/3M/en_us/msds (click MSDS search). For emergencies, call 800-364-3577 or 651-737-6501 (24 hours).

A) Place tank on stand.

B) Remove the soft rubber cap from the tank inlet fi tting.

C) Wrap PTFE tape to the right (clockwise) onto threads.

D) Pour sanitizer into tank.

E) Thread ball valve onto tank.
F) Insert one end of 3/8” yellow tubing into ball valve.
G) Connect supplied 3/8” x 1/4” adaptor to other end of yellow tubing.
H) Connect free end of orange feed water tubing to 1/4” side of adaptor.
I) Open feedwater valve and tank valve and allow tank to fi ll (about 3 minutes).
J) To open feedwater valve, turn handle to the left (counterclockwise).
K) Turn off feedwater valve and tank valve.
L) Remove orange tubing from adaptor then remove adaptor from yellow tubing. The tubing may need to

be cut for removal due to line pressure. Refer to Figure 4 on page 17.

M) Set tank aside for at least 15 minutes for disinfection.

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Installation, Operation and Maintenance Manual

6. Install the Drain Connection (Figure 5)

For basement installations, the drain saddle is generally not used. Instead, the RO reject line is routed so
that it drains into a laundry sink, fl oor drain or standpipe through an approved air gap.

Under counter Installations:

IMPORTANT NOTES

• Before starting the under counter installation procedure, inspect the condition of the drain piping, especially in
older homes where the traps and tailpieces can be deceptively thin and frail.

• Some state and local plumbing codes may prohibit the use of saddle-type valves and/or drain connections. See
page 2 for list of states. Optional feed valve assemblies can be purchased.

The drain saddle assembly is designed to fi t around a standard 1 1/2” O.D. drain pipe. For smaller (lavatory
type) or larger (ABS pipe) drains, consult your Aqua-Pure® distributor.

NOTE: The drain saddle should always be installed above (before) the trap and on the vertical or horizontal
tailpiece. Never install the drain saddle close to the outlet of a garbage disposal or dishwashing drain be­cause plugging of the RO drain line may occur.

A) Remove backing on foam seal and place over hole on threaded half of the drain saddle. Place drain

saddle at the selected location and mark the pipe through the threaded opening.

B) Drill a 1/4” hole at the marked spot through one side of drain tailpiece.

C) Position both halves of drain saddle on drain pipe so the threaded opening lines up with the hole in the

drain pipe.

D) Use bolts and nuts to clamp drain saddle onto drain pipe. Do not overtighten and make sure that there

is equal space between saddle halves on each side. CAUTION: Overtightening could result in damage
to the drain line, which may lead to fl uid leaking.

E) Wrap PTFE tap on thread of drain saddle elbow and tighten into drain saddle. Orient elbow in the direc-

tion of RO faucet location.

7. Install the Faucet

NOTE: Under counter installations require a faucet with faucet air gap module. See Figures 1 and 2.

A wide variety of RO faucet mounting situations can be encountered, the most common being stainless
steel and ceramic on metal sinks.

The faucet should be positioned so that it empties into the sink and the spout swivels freely for convenience.
If the sink already has a hole provided that can accommodate the RO faucet, then no drilling is required and
you can proceed to the section on mounting the faucet.

NOTE: Sprayers can be disconnected to provide a suitable hole for the RO faucet. A pipe cap or plug will
be required to seal the sprayer connection on the existing faucet.

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Installation, Operation and Maintenance Manual

8. Make the Faucet Mounting Hole

CAUTION

To reduce the risk of eye injury while drilling counter-tops for faucet installation:

• Safety glasses MUST be worn during sink hole drilling operations.

Before starting the hole making operation, always check below the sink so that nothing interferes with
mounting the faucet such as reinforcing ribs, support brackets or cabinet construction.

Stainless Steel Sink, faucet with or without air gap module.

Recommended Tools:

• Center punch

• Variable speed drill and high speed drill bits

• Greenlee chassis punch 7/8” hole size
(alternate 9/16” size may be used for faucets without air gap module)

• Protective gloves

Procedure:

A) Center punch a small indent at the desired faucet location.
B) Slowly drill the required pilot hole for the chassis punch.
C) Set up the chassis punch per instructions and tighten nut to cut the desired hole size.
D) Clean up sharp edges with a fi le if necessary.

Porcelain/Enamel/Ceramic on sheet metal or cast iron base;
faucet with or without air gap module:

Recommended Tools:

• Variable speed drill

• Relton porcelain cutter set 7/8” size
(alternate 9/16” porcelain bit may be used for faucets without air gap module)

• Plumbers putty

Procedure:

It is important to understand what is involved in this procedure. First, the glassy layer of porcelain must be
penetrated through to the base metal. Second, a center disc of porcelain must be removed while protecting
the surrounding porcelain against chipping or fracturing. Third, the base metal must be drilled through to
complete the hole.

IMPORTANT NOTES

• Always operate drill with light pressure at slow speed (300-400 rpm).

• When using a porcelain cutter, it is critical to take the precaution that it is always in a sharpened condition. Dull
cutters are known to chip sinks.

A) Mark the center for the 7/8” hole.

B) Form a shallow putty dam around hole area and fi ll with enough water to lubricate carbide drill bit.

C) Carefully drill pilot hole through porcelain/enamel and base metal using carbide type pilot drill.

D) Insert pilot tip of spring loaded porcelain cutter into pilot hole.

E) Drill porcelain/enamel using spring loaded porcelain cutter, making certain a complete ring has been

cut through the porcelain/enamel to the base metal.

F) Change to the metal cutter. With slow speed and light pressure, cut away the inner porcelain/enamel

disc down to the base metal. Make certain that the cutter does not touch the outer rim of the cut por­celain/enamel. Continue with this bit to cut through metal until sink has been completely penetrated.

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Installation, Operation and Maintenance Manual

9. Mount the Faucet (see Figure 6)

IMPORTANT NOTES

• The Uniform Plumbing Code dictates that there must be an air gap between the RO reject line and the waste
drain. The faucet air gap module connections can be eliminated only if an air gap is provided elsewhere in the
drain line (i.e. basement installations).

Installation With Faucet Air Gap Module:

A) Familiarize yourself with all components shown in the air gap faucet diagram (Figure 6).

B) Slide stainless base plate and rubber washer up tube and brass threaded stem of faucet.

C) Connect length of standard green 1/4” tubing to smaller barb on air gap faucet. Push on fi rmly until it seats.

D) Connect length of black 3/8” tubing to larger barb on air gap faucet.

E) Feed both the green and black tubing and threaded nipple through sink/counter mounting hole and

orient the faucet.

F) From below sink/counter, assemble the white spacer (open end up, open side toward air gap), fl at

washer and hex nut on threaded nipple and tighten by hand.

G) Back off on hex nut just enough to slide slotted washer between white spacer and underside of sink/

counter (with open side of slotted washer closest to air gap tubes.)

H) After rechecking faucet orientation, tighten hex nut (9/16” wrench) until faucet feels secure.

I) From above the sink, make any minor orientation corrections by turning the faucet with a padded ad-

justable wrench. NOTE: Flats on chrome faucet may be used for tightening with an adjustable wrench.
Use care not to mark chrome fi nish.

10. Make Initial Faucet Tubing Connections (see Figure 1)

A) The orange 1/4” tubing should have already been connected to the Faucet Adapter with 1/4” brass

compression nut, insert and plastic sleeve.

B) Connect the 3/8” x 1/4” adapter that was used to fi ll tank to the 1/4” blue faucet tube.

C) Route black 3/8” tubing from faucet air gap module to drain saddle so that it slopes continuously

downward without loops or low spots. Cut to proper length and connect to drain elbow by pushing tub­ing into fi tting. Refer to Figure 4 on page 17. If basement installation, route standard green 1/4” tubing
from an appropriate drain connection (e.g. laundry sink, fl oor drain, stand pipe) to intended location of
fi ltration assembly. An air gap must be installed between outlet and drain connection.

CAUTION

To reduce the risk associated with property damage due to water leakage:

• Ensure all tubing and fi ttings are secure and free of leaks.

• Installation and Use MUST comply with all state and local plumbing codes.

• Do not install if water pressure exceeds 125 psi (862 kPa). If your water pressure exceeds 125 psi, you
must install a pressure limiting valve. Contact a plumbing professional if you are uncertain how to check
your water pressure.

• Do not use a torch or other high temperature sources near fi lter or plastic fi ttings.

• Mount fi lter in such a position as to prevent it from being struck by other items used in the area of installation
(waste baskets, etc).

• Shut off inlet water supply and depressurize system as shown in manual when changing cartridges or servicing.

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Installation, Operation and Maintenance Manual

11. Install the Purifi cation Assembly and Storage Tank

WARNING

To reduce the risk associated with a hazardous voltage due to an installer drilling through existing electric
wiring or water pipes in the area of installation:

• Do not install near electric wiring or piping which may be in the path of a drilling tool when selecting the position

to mount the fi lter bracket.

Under counter Installation:

The RO assembly is usually mounted to the right or left sink cabinet sidewall, taking into consideration the
space available and the tank location. Generally, the tank is placed in the rear of the sink cabinet while the
RO assembly is positioned toward the front for better accessibility.

To mount the RO assembly, elevate it at least 2” off the cabinet fl oor (with cartridges installed) and, while
keeping level, mark the location of the mounting holes on the cabinet sidewall. Make small pilot holes with
an awl or drill and screw in the two mounting screws, leaving just enough protruding to allow bracket mount­ing slots to slide over them.

NOTE: If the cabinet sidewalls are not of solid construction, the RO assembly can be set on the cabinet
fl oor and held against the sidewall with the mounting screws. However, the RO assembly will then need to
be lifted from the mounting screws in order to remove fi lter cartridges.

The tank can be oriented either vertically or horizontally. It is generally placed to the rear of the cabinet but
can be set in the from center (between the sink basins) for ease of access if space permits.

Basement Installation:

The RO assembly is generally mounted to the basement wall (using wall anchors) or to wood ceiling sup­ports. To mount the RO assembly, keep bracket level and mark the location of the mounting holes. Install
wall anchors and/or mounting screws as required. Leave screw heads protruding to allow bracket mounting
slots to slide over them.

The tank may be oriented either vertically or horizontally and can be placed on a shelf, on the fl oor, or sus­pended from the ceiling supports using sturdy brackets.

An effort should be made to minimize the distance between the tank and RO assembly to help assure an
adequate fl ow rate to the faucet.

12. Make Final Tubing Connections (see Figure 1)

With all of the components in place, the fi nal tubing connections can be made. When routing tubing be­tween components, several guidelines should be observed.

Tubing runs should generally follow the contour of the cabinets rather than interfere with the cabinet stor­age area. Strive for neatness and an orderly tubing “fl ow” using fasteners (e.g. insulated staples) to secure
the tubing. Arrange the tubing so there are no sharp bends and leave some “play” in the tubing for ease of
servicing, then cut tubing to desired length.

Try to keep the tubing from the RO assembly to the tank and faucet as short as practical for good fl ow.

Undersink Installation:

A) Connect orange 1/4” tubing from feedwater valve to “Feed” connection on RO assembly.
B) Connect one end of blue 3/8” tubing to faucet adapter and the other end to the “faucet” connection on

the RO assembly.
C) Connect yellow 3/8” tubing from storage tank to the tee on the RO assembly.
D) Route special red “SFC” tube from RO assembly module (factory made connection) toward faucet. Do

not cut this special SFC tube. Its length is important to maintain proper effi ciency and performance.
E) Remove white plug from coupling fi tting on end of red SFC tube. Connect SFC tube to one end of 1/4”

x 1/4” coupling fi tting.
F) Connect the green 1/4” tubing from faucet air gap to 1/4” coupling fi tting on the end of SFC tube

(See Figure 4 on page 17).

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Installation, Operation and Maintenance Manual

13. Install Icemaker Hookup (optional)

The RO drinking water fi ltration system can be connected to any standard refrigerator icemaker or ice­maker/water dispenser. It should never be connected to a commercial type bar icemaker.

Hooking up an icemaker involves connecting a tee with shutoff valve into the blue 3/8” faucet tubing and
routing tubing over to the refrigerator. Hooking up to existing copper tubing is generally not recommended.
If copper tubing must be used, then installation of a small in-line carbon fi lter at the refrigerator connection
is recommended.

CAUTION

To reduce the risk associated with property damage due to water leakage:

• Ensure all tubing and fi ttings are secure and free of leaks.

Before turning off the existing tap water supply to the refrigerator icemaker, always shut off the icemaker fi rst
(usually by lifting the lever arm above the bin to the uppermost position). The icemaker should only be turned
on again after the RO system has been drained several times and the tank has a full supply of water.

IMPORTANT NOTES

• Before any service is performed on the RO system, always turn off the icemaker valve and the icemaker unit.
Only turn on when the system is operating and the tank is full.

®

NOTE: High capacity residential refrigeration icemakers (e.g. Sub-Zero
of 20 psi (138 kPa). In some instances, this unit will not provide 20 psi (138 kPa) or greater pressure. In that
case, a second storage tank will be required. Please call technical services for installation advice.

) may require a minimum pressure

14. Install Filter Cartridges

A) Remove new fi lter cartridges from the box.

B) Using tap water, wet the o-ring seals to make insertion easier.

C) Line up the cartridge ears, insert cartridge and push into the head until fully seated. Twist the cartridge

1/4 turn to the right (clockwise) to lock into place.

15. Start Up The System

A) Double check that all connections are secure.

B) Turn on feedwater saddle valve and check for leaks. If any leaks are noted, turn off valve and correct

before proceeding. NOTE: If a leak occurs at a “Push-In” fi tting, refer to Figure 4 on page 17.

C) Lift faucet handle and allow tank to drain completely of sanitizing solution. Do not use this water. When

tank is empty, the faucet will steadily drip. This is the rate water is processed by the RO system. Ap­proximately 2-3 drops per second.

D) Close faucet. Wait at least 4 hours and drain tank again. The water should be discarded as it may con-

tain some disinfectant solution.

E) The system should be ready to use as soon as the tank refi lls. If any objectionable taste is noticed after

the second tank draining, wait and drain tank the following day. Only when the tank is full should an
icemaker be turned on if one is connected to the system.

WARNING

To reduce the risk associated with ingestion of water contaminated with Calcium Hypochlorite sanitizer:

• After installation, sanitizer must be fl ushed from the system before fi rst use as directed within the installation
instructions.

NOTE: When the system is fi rst turned on, water may intermittently “spurt” from the air gap module. This is
perfectly normal and is caused by air trapped in the system. This will usually disappear within a short time.

11

Installation, Operation and Maintenance Manual

16. Installation Troubleshooting

Problem:

Water leaks from opening in air gap module.

Possible Causes:

A) Drain line blocked or drain not drilled through completely.

B) Air lock in air gap outlet.

C) Drain line has loop or is not vertical enough.

Solutions:

A) Check that drain line is clear of obstructions and remove drain saddle fi tting to verify that the hole is

drilled through completely.

B) Blow air into air gap outlet using short length of tubing.

C) Shorten tubing so that run is as vertical as possible.

Problem:

Noise in drain (“gurgling” or “dripping” sound)

Possible Cause:

Reject water dripping into standing water in the drain trap.

Solutions:

A) Make sure the 3/8” black tubing from faucet air gap module slopes continuously downward to drain

saddle without loops or low spots.

B) Angle drain piping so reject water runs down side of drainpipe.

C) Change location of drain saddle to horizontal drain pipe or alternate vertical drain pipe farther from the

trap. Properly plug original hole. CAUTION: Make sure drain saddle is always installed above (before)
the trap.

Problem:

System is not producing water.

Possible Cause:

A) Need a minimum of 30 psi (207 kPa) incoming water pressure.

B) Too little or no reject water.

C) Incorrect tank pressure.

Solutions:

A) Increase pressure by adding pressure pump.

B) Disconnect special SFC reject tubing from faucet air gap inlet tubing and check reject fl ow rate which

should be approximately 175 ml/min.

C) Empty water from tank. Lift tank to verify that it is empty. Adjust pressure to 5-7 psi (34-48 kPa).

Problem:

System is not producing enough water.

Possible Cause:

Incorrect tank pressure.

Solutions:

Empty water from tank. Lift tank to verify that it is empty. Adjust pressure to 5-7 psi (34-48 kPa).

12

Installation, Operation and Maintenance Manual

17. Maintenance

Reverse Osmosis drinking water fi ltration systems contain treatment components that are critical for effec­tive reduction of Total Dissolved Solids as well as inorganic chemical contaminants. We strongly recom­mend that the user test the water periodically (every six months minimum) to verify that the system is per­forming satisfactorily. A Percent Rejection (PR) Water Quality Monitor is available to provide the user with
a means to test the water at any time. Routine maintenance is necessary in the form of prefi lter, postfi lter
and membrane replacement.

Replacing Filter Cartridges

The life of fi lter cartridges generally depends on local water conditions (i.e., dirt, rust and/or chlorine levels)
and by the length of service.

CAUTION

To reduce the risk associated with property damage due to water leakage:

• The disposable fi lter cartridge MUST be replaced every six (6) months, at the rated capacity or sooner if a

noticeable reduction in fl ow rate occurs.

When to Replace Filters

A) Every six months, at the rated capacity or sooner if a noticeable reduction in fl ow rate occurs.

B) A noticeable decrease in water production is an indication that the fi lters require changing.

C) A decrease in water quality would be an indication.

How to Replace Prefi lter and Postfi lter Cartridges

A) Lift up on the faucet handle to drain the tank. Close the cold water feed valve. Wait fi ve (5) minutes for

the fi ltration assembly to completely depressurize.

B) Twist the fi lter cartridge 1/4 turn to the left (counterclockwise) so that the ears on the cartridge are

able to disengage from the head. Then pull cartridge from the head. (It may be necessary to twist the
cartridge slightly from side to side to help free it.)

C) Remove new fi lter cartridges and the sanitary sealed wrapper from the box. Double check to see that

it is the correct replacement fi lter cartridge by comparing the labels.

D) Using tap water, wet the o-ring seals to make insertion easier.

E) Line up the cartridge ears, insert cartridge and push into the head until fully seated. Twist the cartridge

1/4 turn to the right (clockwise) to lock in place.

F) Open the cold water feed valve and carefully check for leaks.

G) RO System Flush Instructions:

Prefi lters — Close tank. Lift the faucet handle and fl ush at least one (1) gallon of water through the
system (approximately 10 minutes).
Postfi lters — Install. Open tank. Lift the faucet handle and fl ush at least one (1) gallon of water through
post fi lter (approximately 30 minutes with tank empty or 5 minutes with tank full). It may be necessary
to continue fl ushing until water becomes clear.

Replacing RO Membrane Module

The life of the RO membrane depends on local water chemistry and proper maintenance, e.g., regular fi lter
changes. Under typical conditions, the RO membrane life ranges from eighteen (18) months to three (3)
years because of its self cleaning feature.

The RO membrane should be replaced as determined by an optional percent rejection (PR) monitor. The
monitor is factory preset so that a green light will be displayed when the water quality is good, and a red
or yellow light indicates that replacement may be necessary. If a red or yellow light is displayed, the faucet
should be opened and the storage tank drained. After it has refi lled, check the system again. If a red or yel­low light is still displayed, the membrane should be replaced.

Recommended service life of the RO membrane is 36 months, maximum.

13

Installation, Operation and Maintenance Manual

How to Replace the RO Membrane Module

Replacement of the RO Membrane Module generally requires:
New replacement membrane module of the same type and performance and supplies for sanitizing.

A) Open faucet, shut off tank and turn off feedwater. Wait fi ve minutes for RO assembly to completely

depressurize.

B) Disconnect tubing from all three connections on membrane module (refer to Figure 4). Please note

the tube color and respective fi tting for re-connection.
C) Remove RO membrane module from clips and discard.
D) Position replacement module above clips and push into place. If necessary, rotate module so fi ttings

are aligned with respective tubing.
E) Insert each tubing end into respective “Push In” connector as far as it will go. Refer to Figure 4. Please

note that the blue tubes attach to center fi ttings on module.
F) Follow the sanitizing and start up procedures for the storage tank and purifi cation assembly outlined in

the next section.

Sanitizing The RO Filtration System

For the highest quality water from your Aqua-Pure® RO drinking water fi ltration system, it is important to
routinely sanitize both the storage tank and the RO assembly.

IMPORTANT NOTES

• The sanitizing procedures are intended to be part of a routine maintenance program only and not designed to
sanitize systems that have become highly contaminated from misuse.

When to Sanitize the Storage Tank

A) Upon start-up as described in Section 5 of the Installation Manual. NOTE: Standard Aqua-Pure RO

storage tanks need a special sanitizing agent which is activated when the storage tank is initially fi lled.
(See Section 5 in the Installation Manual.)

B) After any servicing or routine maintenance which involves the prefi lter(s) or membrane.

Refer to Section 5 Steps D through K to Sanitize Storage Tank.

How to Sanitize the RO Assembly

Sanitizing the RO Assembly generally requires:

• New pre and post cartridge

• Common household bleach (5.25% NON-scented)

• Standard eyedropper or equivalent

A) Shut off feedwater valve and tank ball valve.
B) Follow instruction for changing prefi lter and postfi lter.
C) Before attaching new cartridge(s), use eye dropper to inject one teaspoonful (approximately 5 ml) of

household bleach into the center of each fi lter cartridge.
D) Turn on feedwater valve and tank ball valve.
E) Open faucet to allow tank to drain.
F) Close faucet valve and allow system to run for at least one hour.
G) Drain tank and discard water. NOTE: If any objectionable taste is noticed, drain tank again and allow

to refi ll.
H) Allow the system to run into the sink for the remainder of 24 hours to fl ush the membrane.
I) Close faucet. The fi ltration system should be ready to use as soon as the tank refi lls.

14

Installation, Operation and Maintenance Manual

Long Term Non-Use

If the RO fi ltration system is left unused for long periods (>30 days), follow this procedure:

A) Open faucet to drain tank and turn off feedwater valve. Wait fi ve minutes for RO assembly to depressurize.

B) Remove all cartridges. Turn cartridges upside down in sink or container to drain out as much water as

possible.

C) When RO fi ltration system is ready to be put into service, reinstall cartridges in the RO assembly

heads and sanitize storage tank as described in Section 4. The RO assembly can also be sanitized at

this time, if desired.

D) Follow start up procedure outlined in Section 4.

18. Parts List

1

4

3

2

Item No. Description Part No.

1 RO Membrane Module 56084-01

2 Replacement Cartridges

(Pre and Post fi lters # AP5527)

3 Shut Off Valve 60-90119

4 SFC Tubing 52-318212

5 Storage Tank (not shown) 56-18125

55981-01

15

Installation, Operation and Maintenance Manual

General Under counter Installation Schematic (Figure 1)

Faucet with
Air Gap

For best flow, tubing must

1/4” Green

3/8” Blue

be as vertical as possible.

3/8” Black

Red SFC Tubing

3/8” Yellow

3/8” Yellow

1/4” Orange

Cold Water
Supply Only

For best flow, keep
tubing from Tank
to RO Assembly as
short as possible.

RO

Assembly

Sink
Drain

General Basement Installation Schematic (Figure 2)

Faucet without
Air Gap

Undersink Area

3/8” Blue

3/8” Yellow

1/4” Orange

RO

Assembly

To laundry sink
standpipe or floor
drain

Floor

Red SFC Tubing

Cold Water
Supply Only

1/4” Green

Air gap device
(eg. Gap-A-Flow)

Sink
Drain

Storage

Tank

For best flow, keep
tubing from Tank
to RO Assembly as
short as possible.

Storage Tank

Plastic Faucet Adapter Installation (Figure 3)

Locate the cold water stem on the underside of the faucet fi xture.
Unscrew the cold water feed tube from the faucet stem. Locate the 1/4”
Faucet Adapter that came with your Drinking Water System. Insert the
black gasket into the threaded adapter and tighten onto the Faucet Cold
Water Stem under the sink, making sure A 1/4” fi tting is accessible and
not facing the wall. Make sure not to over tighten. Take the Cold Water
Feed Tube and attach to the Faucet Adapter, making sure not to over
tighten. Locate the 1/4” Faucet Tube and insert into the 1/4” Faucet

Adapter. See “Using Push-In Fittings.”

16

Faucet Stem

Under Sink

Faucet Tubing

Feedwater

Tube

Installation, Operation and Maintenance Manual

Using Push-In Fittings (Figure 4)

This product is equipped with user-friendly “Push In” connectors. Proper use of the connectors is shown in the dia­grams. It is most important that the tubing selected for use with the connectors be of high quality, exact size and round­ness, and with no surface nicks or scratches. If it is necessary to cut the tubing, use a plastic tubing cutter or sharp
razor knife. Make a clean square cut. Should a leak occur at a Push In connector, the cause is usually defective tubing.

To fi x: 1. Relieve pressure. 2. Release tubing. 3. Cut off at least 1/4” from end.

4. Reattach tubing. 5. Confi rm connection is leak-free.

To Attach Tubing

Push tubing in as far as it will go. Tubing must be in­serted past o-ring and hit backstop. Pull tube to ensure
it is secured.

To Release Tubing

Push in grey collet to release tubing. With collet
held, pull tubing straight out.

CAUTION

To reduce the risk associated with property damage due to water leakage:

• Ensure all tubing and fi ttings are secure and free of leaks.

Collet

Backstop

CAUTION

To reduce the risk associated with property damage due to water leakage:

• Ensure all tubing and fi ttings are secure and free of leaks.

• Do not install unit if collet is missing. Contact 3M PI if collets are missing from any fi ttings.

Drain Connection Installation (Figure 5)

Drain saddle elbow

Garbage
Disposal

NEVER mount here

Mount drain saddle at

either location

17

Hole should be

located on top

of the pipe

Drain saddles

Drain Connection

(horizontal example)

Installation, Operation and Maintenance Manual

Faucet Installation (Figure 6)

Back ViewSide View

Base plate

Rubber washer

Air gap hole

C.L.

Slotted washer

Spacer

Threaded nipple

Flat washer

Hex nut

Blue 1/4” Product
water tubing

1/4" Standard green tubing

Special red "SFC"
tubing from RO

Black 3/8" Reject tubing to drain

Blue 1/4" Product water tubing

3/8" Tubing from storage tank

18

19. Limited Warranty

3M Purifi cation Inc. warrants this Product will be free from
defects in material and manufacture for one (1) year from
the date of purchase. This warranty does not cover failures
resulting from abuse, misuse, alteration or damage not
caused by 3M Purifi cation Inc. or failure to follow installa­tion and use instructions. No warranty is given as to the ser­vice life of any fi lter cartridge or membrane as it will vary
depending on application. 3M PURIFICATION INC. MAKES

NO OTHER WARRANTIES OR CONDITIONS, EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY
IMPLIED WARRANTY OR CONDITION OF MERCHANT­ABILITY OR FITNESS FOR A PARTICULAR PURPOSE
OR ANY IMPLIED WARRANTY OR CONDITION ARISING
OUT OF A COURSE OF DEALING, CUSTOMER OR US­AGE OF TRADE. If the Product fails to satisfy this Limited

Warranty during the warranty period, 3M Purifi cation Inc. will
replace the Product or refund your Product purchase price.
This warranty does not cover labor. The remedy stated in

this paragraph is Customer’s sole remedy and 3M Puri­fi cation Inc.’s exclusive obligation.

Limitation of Liability: 3M Purifi cation Inc. will not be liable

for any loss or damage arising from the use of the Product(s),
whether direct, indirect, special, incidental, or consequential,
regardless of the legal theory asserted, including warranty,
contract, negligence or strict liability. Some states do not al­low the exclusion or limitation of incidental or consequential
damages, so the above limitation may not apply to you.

Please visit www.aquapure.com to register your product.

3M Purifi cation Inc.

400 Research Parkway
Meriden, CT 06450 USA
Toll Free: 1-800-222-7880
Worldwide: 203-237-5541
Fax: [phone]
www.aquapure.com • www.3Mpurifi cation.com

Visit www.nsf.

org for the claims

associated with

products that are

NSF listed.

System tested and certifi ed by NSF International
against NSF/ANSI Standards 42 and 58 and CSA
B483.1.

3M is a trademark of 3M Company.

Aqua-Pure is a trademark of 3M Company used under license.

Sub-Zero is a trademark of Sub-Zero, Inc.

NSF is a trademark of NSF International.

© 2011 3M Company. All rights reserved.