PDF User Manual

  1. Home
  2. Manuals
  3. 3M 3MRO401 Installation And Operating Instructions Manual

3M 3MRO401 Installation And Operating Instructions Manual

Made by: 3M
Type: Installation And Operating Instructions
Category: Water Dispenser
Pages: 12
Size: 1.2 MB

 

Download PDF User Manual


Related Product Video

 

Full Text Searchable PDF User Manual



background image

Installation and Operating Instructions For 

3MRO401 Reverse Osmosis Drinking Water 

Filtration System

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

future maintenance instructions.

APPLICATION:

 

Premium Reverse Osmosis Drinking Water

1

Drinking and hydration 

 Hot and cold beverages 

 Cooking and food preparation 

 Pet hydration 

 Aquatic aquariums 

Optimized For 

Reduction Of

Select Volatile 

Organic Compounds 

(VOCs)!*

System tested and certifi ed by NSF International against 
NSF/ANSI Standard 42, 53 and 58 for the reduction of 
claims specifi ed on the Performance Data Sheet.

1

 

Based on higher fl ow rate, higher daily production rate and additional VOC claims com-

pared to the previous 3MRO401 model.
* See Performance Data Sheet for additional details.

 


background image

SAFETY INFORMATION

Read, understand and follow all safety information contained in these instructions prior to installation and use of 

the 3MRO401 Reverse Osmosis Drinking Water Filtration System. Retain these instructions for future reference.
Intended use:

The 3M

 Reverse Osmosis Drinking Water System (Model 3MRO401) is intended for use in filtering potable water and 

has not been evaluated for other uses.  The product is installed at the point of use and must be installed as specified in 

the installation instruction by a qualified professional.

EXPLANATION OF SIGNAL WORD CONSEQUENCES

WARNING

CAUTION

NOTICE

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.

2

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 before 

or after the system.  Systems certified for cyst reduction may be used on disinfected water that may contain filter-

able cysts. EPA Establishment #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 path of a drilling tool when selecting the position to 

mount the filter bracket.

To reduce the risk of physical injury:
 •De-pressurizesystemasshowninmanualpriortocartridgeremoval.
To reduce the risk associated with a hazardous voltage:

 •Ifthehomeelectricalsystemrequiresuseofthecoldwatersystemasanelectricalsafetyground,ajumpermust

be used to ensure a sufficient ground connection across the filter installation piping — refer installation to quali-

fied personnel.

 •Do not use the Filter if the power cord is damaged — contact qualified service personnel for repair.
To reduce the risk associated with back strain:

 •Followsafeliftingprocedures.

 


background image

3

• Failure to install or operate your filter system in accordance with these use instructions or any 

other installation or use instructions accompanying this product may result in product failure and 

property damage, including water leakage and will void warranty.

To reduce the risk associated with property damage due to water leakage or flooding:
 • Read and follow allInstructions before installation and use of this system.
 • InstallationandUseMUST comply with all state and local plumbing codes.
 • Protect from freezing, remove filter cartridge when temperatures are expected to 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 on hot water supply lines.  The maximum operating water temperature of this filter system is 100°F (37.8°C).
 • Do not install if water pressure exceeds 100 psi (689 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.

 • Whereabackflowpreventiondeviceisinstalledonawatersystem,adeviceforcontrollingpressureduetothermal

expansion must be installed.  Contact a plumbing professional if you are uncertain how to select/install/maintain a 

thermal expansion device.

 •Whereaboosterpumpisinstalledonawatersystem,youmustmaintainandinspecttheattachedpressureswitch

regularly in accordance with the booster pump manufacturer’s instructions.  Contact a plumbing professional if you 

are uncertain how to maintain your booster pump system.

 •Whereaboosterpumpisinstalledonawatersystem,youmustinstallanappropriatepressurereliefvalve.Pres-

sure relief valve must be maintained and inspected every 6 months.  Contact a plumbing professional if you are 

uncertain how select/install/maintain a pressure relief valve.

 • Do not use a torch or other high temperature sources near filter system, cartridges, plastic fittings or plastic plumbing.
 • Do not install system where water lines could be subjected to vacuum conditions without appropriate measures for 

vacuum prevention.

 • Onplasticfittings,neverusepipesealantorpipedope.UsePTFEthreadtapeonly,pipedopepropertiesmaydete-

riorate plastic.

 • Takecarewhenusingpliersorpipewrenchestotightenplasticfittings,asdamagemayoccurifovertighteningoccurs.
 • 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.

 • Mountfilterinsuchapositionastopreventitfrombeingstruckbyotheritemsusedintheareaofinstallation.
 • Ensurethatthelocationandfastenerswillsupporttheweightofthesystemwheninstalledandfullofwater.
 • Ensurealltubingandfittingsaresecureandfreeofleaks.
 • Do not install unit if any fitting if collet is missing. Contact 3M if collets are missing from any fittings.
To reduce the risk of water leakage or flooding, and to ensure optimal filter performance:
 •Changethedisposablefiltercartridgeevery12monthsorsoonerifyouobserveanoticeablereductioninwaterflowrate.
 •Changethedisposablefiltermembraneevery36monthsorsoonerifyouobserveanoticeablereductioninmem-

brane production rate.

 •Failuretoreplacethedisposablefiltercartridges&membraneatrecommendedintervalsmayleadtoreducedfilter

performanceandcracksinthefilterhousing,causingwaterleakageorflooding.

 •Forquestionsorconcerns,pleasecontactCustomerServiceat1-855-3M-WATER.

NOTICE

 


background image

INTRODUCTION

  This manual explains the installation, operation and maintenance of the 3MRO401 Reverse Osmosis Water Filtration 

System.  Please read each section of this manual carefully.  

 TheROdrinkingwatersystemisdesignedtoconnectpermanentlytoahome’splumbingsystem.TheinstallationMUST

conform to your state and local plumbing codes.  Advanced plumbing skills are required to complete your installation.  

Failure to install the system as instructed will VOID the warranty.

TABLE OF CONTENTS

I. Installation Instructions

A.   Determine the system location ........................................................................................................5

B.   Prepare the area for installation ......................................................................................................5

C.   Determine faucet mounting location ...............................................................................................5

D.   Make the faucet mounting hole .......................................................................................................5

E.   Mount the faucet .............................................................................................................................6

F.   Prepare the system for installation .................................................................................................6

G.   Install the feed water connection and tubing ..................................................................................7

H.   Prefill and sanitize the storage tank ................................................................................................7

I.    Install the drain connection .............................................................................................................7

J.   Install the filtration assembly and storage tank ...............................................................................8

K.   Make the tube connections .............................................................................................................8

L.   Start up the system .........................................................................................................................8

M.   Flush the system and check the operation ......................................................................................8

N.   Installation troubleshooting.............................................................................................................9

II. Operation & Maintenance Instructions

A.   Important water quality assurance requirements ............................................................................10

B.   Replacing the filters ........................................................................................................................10

C.   Replacing the RO membrane module .............................................................................................10

D.   Sanitizing the RO system ................................................................................................................11

E.   Long term non-use .........................................................................................................................12

III. Limited Warranty

 ..........................................................................................................12

4

• Installation may require drilling a hole in your sink top.  A variable speed drill and specialized drill bits 

may be needed.  We highly recommend professional installation.

 


background image

A.  DETERMINE THE SYSTEM LOCATION

 

The system should be located under a sink.  The exact placement 

of the various components will vary from installation to installation.  

You must decide where to install the faucet, tank and filtration 

assembly by balancing convenience with ease of installation and 

servicing.  (See Fig. 1).

B.  PREPARE THE AREA FOR INSTALLATION

 

Inspect the cold water supply line and determine if any special 

fittings, in addition to what is included in the kit, are required.

IMPORTANT NOTE:

It is a good idea at this time to check the condition of the undercounter 

plumbing for any existing or potential leaks. Make sure to perform any 

necessary repairs prior to the installation of the drinking water system.

I. Installation Instructions

Drain

Saddle

Sink Drain

Storage Tank

Filtration System

1/4" Orange

Tubing

Storage Tank

Valve

Red SFC Tubing

1/4" Green

Tubing

3/8" Black

Tubing

Feedwater

Connection

Placement

3/8" Blue

Tubing

3/8" Yellow

Tubing

Fig. 1

C.   DETERMINE FAUCET MOUNTING LOCATION

 

If the sink already has a hole provided that can accommodate the 

RO faucet, then no drilling is required.  Additionally, a sprayer may be 

disconnected to provide a suitable mounting hole for the RO faucet.  A 

pipe cap or plug will be required to seal the connection.  

 

If drilling is required we strongly recommend you contact a 

professional installer.  The faucet should be positioned so that it empties 

into the sink and the spout swivels freely for convenience.  

 

Before drilling the hole, always check underneath the sink to ensure 

that nothing will interfere with mounting the faucet such as reinforcing 

ribs, support brackets or the cabinet construction.

 

If drilling a hole in your sink is required, the professional installer 

should follow the instructions below.

D.   MAKE THE FAUCET MOUNTING HOLE

Drilling 7/8” diameter hole through countertop or stainless steel sink:

1.  Locate area to be drilled.  Mark center of hole with center punch.

2.  Drill hole with 7/8” drill bit suitable for countertop materials or cast 

iron/stainless steel.

3.  With grinding wheel or file, smooth out any rough edges.

To reduce the risk of eye injury while drilling countertop for faucet 

installations:

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

CAUTION

 •

Thedrinkingwatersystemfaucetshouldbelocatedonaflatsurface,

conveniently located near the sink, so that it empties into the sink.  

Most sinks have pre-drilled holes designated for sprayers, soap 

dispensers, and other accessories.  If your sink does not have an 

extra hole, we highly recommend professional installation.

 •

Porcelain, enamel, and ceramic sinks require special procedures for 

drilling holes.  Professional installation is highly recommended.

IMPORTANT NOTES

5

(FLOOR)

Faucet without

Air Gap

3/8” Blue 

Tubing*

For refrigera-

tor icemaker or 

water dispenser 

hookup, tee into 

tubing

Faucet Adapter

Cold Water 

Supply Pipe

3/8” Yellow 

Tubing*

Storage

Tank**

black tubing with

the optional connection

to a basement floor drain

Air Gap Device

(e.g. Gap-A-Flow,

not included)

Laundry Sink, 

Standpipe or 

Floor Drain

(Basement

 Floor)

Storage Tank

Valve

Red SFC Tubing

Filtration 

system

* For best flow, keep the tubing as short as possible

** Mount the storage tank on a shelf or strap it between two floor joists

1/4” Orange 

Tubing

 


background image

Drilling hole through Porcelain/Enamel/Ceramic Sinks

If you are reading this section, professional installation is highly 

recommended.
Recommended Tools:
• VariableSpeedDrill
• PorcelainCutterToolSet(7/8”Size)
• Plumber’sPutty
Note: It is important to understand this procedure.
1.  The glassy layer of porcelain/enamel/ceramic must be scored 

through to the metal base, creating a disk.

2.  This disk must be removed while protecting the surrounding deco-

rative coating against chipping or fracturing.

3.  The base metal must be drilled through to complete the hole.
Procedure:
1.  Mark center for 7/8” hole.
2.  Form a dam of shallow putty around hole location and fill with 

enough water to lubricate carbide drill bit.

3.  Carefully drill pilot hole through porcelain/enamel/ceramic and base 

metal using a carbide pilot drill bit.  Always operate drill with light 

pressure at slow speed (300 - 400 rpm).

4.  Drill porcelain/enamel/ceramic using special 7/8” cutting tool, 

making certain a complete ring has been cut through to the sink’s 

metal base.

5.  Change to metal cutting drill bit and drill out the center of the ring, 

making sure not to contact other rim of decorative coating.  Cut 

through metal sink base.

E.   MOUNT THE FAUCET

Undercounterinstallationsrequireafaucetwithabuilt-inairgap

such as the one included with the system.  

Undercounter Installation With An Air Gap Faucet (Air Gap is provided 

by hole 1” above faucet base):
1)  
Familiarize yourself with all of the components shown in the air gap 

faucet diagram. (See Fig. 2)

2)  Slide the chrome base plate and rubber washer up the threaded 

base of faucet.

3)  Connect the 1/4” green tubing supplied in the installation kit to the 

smaller barb on the air gap faucet. Push it on firmly until it seats.

4)  From above the sink counter-top, feed the air gap tubing and the 

threaded nipple through the faucet washer, escutcheon plate and 

bottom washer into the faucet mounting hole and position the 

faucet spout over the sink.

5)  From below the sink/countertop, install the slotted washer, plastic 

spacer, base nut and hex nut onto the threaded nipple and tighten 

it by hand.

6)  After rechecking the faucet orientation, tighten the base nut until the 

faucet feels secure, then tighten the hex nut.

F.  PREPARE THE SYSTEM FOR INSTALLATION

 

Check to see that the air charge in the empty tank is approximately 

7 psi (48 kPa). Note: Check the storage tank air pre-charge. Adjust it if 

necessary.  To help keep the membrane as clean as possible, the RO 

membrane cartridge has been shipped separately in a sealed plastic bag.  

6

Fig. 2

Faucet with Air Gap

Side View

Back View

Air Gap hole

1/4” Standard  

green tubing

Special red “SFC” 

tube from RO

Black 3/8” Reject  

tubing to drain

Blue 3/8” Product  

water tubing connection

Blue 3/8” Product  

water tubing

Faucet washer

Countertop

Bottom washer

Escutcheon plate

Mounting spacer

Threaded nipple

Hex nut

Slotted washer

Base nut

Mounting spacer

1/4” x 3/8” Tube Connector

1/4” x 3/8” Tube Connector

 


background image

G.   INSTALL THE FEED WATER CONNECTION AND TUBING 

1)  Open faucet and turn off cold water supply to relieve pressure. 

2)  Locate the cold water stem on the underside of the faucet fixture. 

Unscrewthecoldwaterfeedtubefromthefaucetstem.Locatethe

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” side 

connection is accessible and not facing the wall. Make sure not to 

overtighten.

3)  Take the Cold Water Feed Tube and attach to the Faucet Adapter, 

making sure not to over tighten.

4)  Locate the 1/4” Orange Tubing and insert into the 1/4” outlet of 

FaucetAdapter.SeeFigure3and“UsingPush-inFittings”below.

5)  Leave cold water supply off. 

H.   PREFILL AND SANITIZE THE STORAGE TANK

 

Prefilling the storage tank is always recommended so that there is 

pressure to check for leaks as well as sufficient water to flush the carbon 

block post-filter. It is important to use a sanitizer when prefilling the tank 

so the solution can sanitize the tubing, fittings, and the faucet at start up.

1)  Removeprotectivecoverfromstoragetankanddiscard.Usingan

eye dropper, dispense 2 drops of ordinary household bleach into the 

end of the tank. Apply PTFE tape (not included) to threaded tank 

connection and install tank valve onto connection. Do not over 

tighten. Open the tank valve so that the tank valve handle is parallel 

to the valve body. 

2)  Connect one end of the 3/8” yellow tubing into quick connect tank 

valve. Connect the other end of the 3/8” yellow tubing to the included 

3/8” x 1/4” union connector.

3)  Connect the free end of the 1/4” orange feedwater tubing to the other 

end of the 3/8” x 1/4” union connector.

4)  Open the cold water supply (making sure the tank valve is still open) 

and allow the tank to fill (about 3 minutes).

5)  Close the cold water supply and the tank valve.  Disconnect the orange 

and yellow tube from the union connector, setting the tank aside while 

proceeding with the rest of the installation (the sanitizing solution 

shouldbekeptinthetankforatleast15minutes).Refertothe“Using

Push-In Fittings” section.

NOTE:  If you encounter difficulty in removing the tubing from the 3/8” x 

1/4” union connector, 

make sure the tank 

valve is closed and 

cut the yellow tubing 

approximately 1” away 

from the tank valve 

fitting to relieve the 

pressure.  Remove the 

1” piece from the tank 

fitting.

IMPORTANT:   After 

the installation 

is complete, it is 

recommended that 

the 3/8” x 1/4” union 

connector be saved 

for future use in tank 

sanitization.

I. INSTALL 

THE DRAIN 

CONNECTION

IMPORTANT:  

Before starting this 

procedure, inspect the 

condition of the drain 

piping, especially in 

older homes where the 

traps and tailpieces can be deceptively thin and frail.  If they are in poor 

condition, replace prior to installing the drain connection.

IMPORTANT:  Some local plumbing codes may prohibit the use of 

saddle-type drain connections.  

Undercounter Installation:

 

The drain saddle assembly is designed to fit around a standard 

1-1/2” OD drain pipe.  For smaller (lavatory type) or larger (ABS pipe) 

drains, consult your professional installer for special drain saddles.

MOUNT

HERE

NEVER

MOUNT

HERE

GARBAGE

DISPOSAL

Fig. 4

7

Vertical Position

Horizontal Position

Nut

Screw

Drain Saddle

Elbow

IMPORTANT:

Hole should be located on

top of the pipe if drain saddle

is positioned horizontally.

Drain Saddle

Halves

Fig. 5

Fig. 3

1/4” Orange 

Tubing

Faucet Stem

Undersink

Faucet Adapter

Cold Water

Feed Tube

Collet

Backstop

“Using Push-In Fittings”

CAUTION

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. 

To reduce the risk associated with property damage due to 

water leakage:

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

Correct

Incorrect

Cut Tubing Straight

 


background image

 

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 because plugging of the RO 

drain line may occur.  (See Fig. 4)

1)  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.

2)  Drill a 1/4” hole at the marked location through one side of the  

drain tailpiece.

3)  Position both halves of the drain saddle on the drain pipe so that the 

threaded opening is lined up with the hole in the drain pipe.

4) Use the screws and nuts to clamp the drain saddle onto the 

drain pipe.  Make sure that there is equal space between saddle  

halves on each side.  Do not overtighten (See Fig. 5).

5)  Screw in elbow and orient toward the RO faucet.

J. INSTALL THE FILTRATION ASSEMBLY AND STORAGE TANK

Undercounter Installation:

 

The filtration assembly is usually mounted to the right or the left 

side wall inside of the sink cabinet, taking into consideration the space 

available and the tank location.  Generally, the storage tank is placed in 

the rear of the sink cabinet while the filtration assembly is positioned 

toward the front for replacement filter accessibility.

 

Install screws and washers halfway, so you can easily slip the 

bracket to wall before firmly setting screws.  NOTE: If you are mounting 

onto sheetrock or drywall, use anchors or screws (not included).
NOTE: It is essential that the filters be installed in the correct location.  

Use the icon coded labels to match the replacement filters with their 

corresponding filter heads.

STEP 1:  Cut open the sealed plastic bag and remove the RO membrane 

module.  

STEP 2:  Remove the white plug from the fitting at the bottom of the 

module by pushing in the small white collet and pulling out the plug 

simultaneously.See“UsingPush-inFittings”onpreviouspage

STEP 3:  Remove the sanitary protective cap from the top of the module.

STEP 4:  Connect the red SFC reject tubing by inserting it into the fitting 

as far as it will go, located at the bottom of the RO membrane module. 

Line up the module ears (See Fig 7), insert the module and push it into 

the head until it is fully seated. Twist the module 1/4 turn to the right to 

lock it into place. The final orientation should be such that the module 

fitting is located towards the rear.

STEP 5:  Install remaining replacement filters into their respective filter 

heads using the icon coded labels, matching the replacement filters with 

their corresponding filter heads (See Fig 9).

 

To mount the filtration assembly, elevate it at least 2” (5 cm) off 

of the cabinet floor and, while keeping it level, mark the location of the 

mounting holes on the cabinet side wall.  Make small pilot holes with an 

awl or a drill and screw in the two mounting screws; leaving just enough 

protruding to allow the bracket mounting slots to slide over them.

 

NOTE:   If the cabinet side walls are not of solid construction, the 

filtration assembly can be set on the cabinet floor and held against the 

side wall with the mounting screws.  However, the filtration assembly 

will then need to be lifted from the mounting screws in order to remove 

the replacement filters.

 

The storage tank may be oriented either vertically or horizontally.  It is 

generally placed to the rear of the cabinet but can be set in the front 

center (between the sink basins) for ease of access if space permits.

K.  MAKE THE TUBING CONNECTIONS

 

With all of the components in place, the tubing connections can 

be made. When routing the tubing between the components, several 

guidelines should be observed.

• Tubingrunsshouldgenerallyfollowthecontourofthecabinet

 

rather than interfere with the cabinet storage area.

• Striveforaneatandorderlytubing“flow”byusingfasteners(e.g.

 

insulated staples) to secure the tubing.

• Arrangethetubingsothattherearenosharpbends.Leavesome

 

“play” in the tubing for ease of servicing, then cut the tubing to the 

desired length.

• Trytokeepthetubingfromthefiltrationassemblytothetank

 

and faucet as short as practical for good flow.

Undercounter Installation:

 

The filtration system will use 1/4” orange, 1/4” green, 3/8” blue, 

3/8” black and 3/8” yellow tubing supplied with the system.

1)  The 1/4” orange tubing should have already been connected to  

 the feedwater connection under Section G. Insert the other end into 

the “Feed” connection labeled on the filtration system (right side).

2)  Attach the 1/4” x 3/8” union to 1/4” blue tubing on faucet.

3)  Insert one end of the 3/8” blue tubing into the “Faucet” connection 

labeled on the filtration system (left side), and the other end into  

 the 1/4” x 3/8” union per Step 2.

4)  Connect the 3/8” black tubing from the air gap faucet to the  

 drain saddle so that it slopes continuously downward without any  

 loops or low spots. Cut the tubing to the proper length and connect  

 it to the drain elbow.

5)  Insert one end of the 3/8” yellow tubing into the “Tank” 

connection labeled on the filtration system, and the other end into  

 the tank valve.

6)  Route the special red SFC tubing with 1/4” union connector from 

the RO membrane module to the 1/4” green tubing connected 

to the faucet. Do not cut this special SFC tubing. It’s length is 

important to maintain proper efficiency and performance.

L.  START UP THE SYSTEM

1)  Double check to see that all of the connections are secure.

2)  Open the cold water feed valve and check the system for 

 

 

leaks. If any leaks are detected, close the valve and correct the  

 

problem before proceeding.  NOTE:  If a leak occurs at a “Push In”  

plasticfitting,thenrefertopage7,“UsingPush-InFittings”.

3)  Lift the faucet handle and open the storage tank valve until a  

 steady 

stream of water flows.  Close the faucet, wait at least five (5)  

 

minutes and carefully check for leaks. Correct them as necessary.

M.  FLUSH THE SYSTEM AND CHECK OPERATION

1)  With the tank valve closed (the tank should still contain the 

sanitizing solution at this point), open the faucet (set the faucet 

handle in the “up” position) and feedwater valve. Water should 

begin to drip from the faucet within several minutes. Continue 

to flush the system for 24 hours. Water will steadily drip from 

the faucet at the time. During this procedure, the tank is being 

intentionally bypassed in order to thoroughly sanitize the tank and 

also flush the membrane of any sanitizers.

2)  After flushing for 24 hours, shut off the faucet. Open the tank valve, 

lift the faucet handle again and allow the tank to completely empty.    

When the water begins to drip steadily from the faucet the tank 

should be empty.

3)  Close the faucet and reinspect the system for leaks. Allow the tank 

to fill completely (it will take approximately 4 hours), then drain the 

tank again. The water should be discarded because it may contain 

small amounts of sanitizer or sanitizing solution.

4)  The system should be ready to use as soon as the tank refills.  

If any objectionable taste is noticed after the second tankful is  

drained, drain the tank the following day. 

8

 


background image

9

N.  INSTALLATION TROUBLESHOOTING

Problem:  Leak at the drain saddle.

Possible Cause:  Drain saddle not clamped tightly enough.

Solution:  Tighten the drain saddle screws evenly and firmly.

Problem:  Leak at the fittings threaded connection.

Possible Cause:  Fitting is improperly taped or not tightened sufficiently.

Solution:  Retape the threaded portion with PTFE tape and thread it in 

firmly.  Do not over tighten.

Problem:  Leak at the fittings push-in connection.

Possible Cause:  Tubing is damaged if there is a tubing misassembly.

Solution:  Remove the tubing.  Squarely cut off 1/4 inch from the end 

of the tubing using a sharp razor knife and reinsert it into the fitting.  

Make sure that the tubing is pushed in completely until it seats. Refer to 

“UsingPush-InFittings”Sectiononpage7.

Problem:  Leak at the replacement filter head.

Possible Cause:  Damaged or misaligned O-ring.

Solution:  Close the cold water feed valve and the storage tank valve.  

Lift up on the faucet handle and drain the system a minimum of five (5) 

minutes.  Remove the replacement filter where leak is found.  Ensure 

both o-rings are present on the replacement filter and are seated into 

grooves; moisten o-rings with water.  DO NOT use any petroleum 

products to lubricate the o-rings. 

Problem:  The faucet leaks from the spout with the handle down.

Possible Cause: An obstructed or damaged valve seat in the faucet 

mechanism.

Solution:  Call Customer Care team at 855-3M-WATER (855-369-2837) 

for assistance in attempt to repair.

Problem:  No steady drip from the open faucet after the tank is drained.

Possible Causes:

The cold water feed valve is not open.

A leak from any product water fitting connection.

Air is still trapped in the system.

Solutions:

Open the cold water feed valve completely.

Correct the fitting leak as outlined above.

Wait for the air to be purged from the system.

Problem:  Water leaks from air gap module opening.

Possible Causes:

The drain line is blocked or the drain hole is not drilled through 

 completely.

The drain line has a loop in it.

Air is locked in the air gap outlet.

There is excessive RO reject flow.

Solutions:

Check to see that the drain line is clear of any obstruction and 

 

remove the drain saddle fitting to verify that the hole is drilled 

 

through completely.

Shorten tubing so that it is as vertical as possible.

Blow air into the air gap outlet using a short length of tubing.

Disconnect the red SFC reject tubing from the faucet air gap inlet 

 

tubing and check the reject flow rate.  It should be less than 5.9 

 

ounces/min.  If it is greater than 5.9 ounces/min., replace the red SFC  

 

reject tubing with the new one of proper length.

Problem:  Too little or no reject flow.

Possible Causes:

Red SFC reject tubing is plugged or damaged.

The cold water feed valve is not open.

Solutions:

Replace the SFC reject tubing with one of proper length.

Open the cold water feed valve completely.

Problem:  Chlorine or other unpleasant taste/odor is evident after the 

initial tank filling.

Possible Cause: Residual sanitizer is still in the water.

Solution: Drain and fill the storage tank several times if necessary.

Problem:  Noise in the drain (gurgling or dribbling sound).

Possible Cause:  The reject water is dripping into the standing water in the 

drain trap.

Solutions:

Make sure that the 3/8” black drain tubing from the faucet air gap 

 

module slopes continuously downward to the drain saddle without 

 

any loops or low spots.

Angle the drain piping so that the reject water runs down the side 

 

of the drain pipe.

Change the location of the drain saddle to the horizontal drain  

 

pipe or any alternate vertical drain pipe which is farther from the  

 

trap.  Properly plug the original hole.  Caution:  Make sure the drain  

 

saddle is always installed above (before) the trap.

Drill larger hole in drain pipe.

Problem:  Little or no water available.

Possible Cause:  

Tank has not had time to fill.

Tank has little or no air charge.

ROmembranemoduleoutputsignificantlybelownormal.

Solutions:

Wait.  The tank will take approximately 4 hours to fill.

An empty tank with the ball valve open to atmosphere, should have 

a 7-8 psi air charge.

Contact our Customer Care Team at 855-3M-WATER (855-369-

2837) for instructions.

 


background image

A.  IMPORTANT WATER QUALITY ASSURANCE 

 REQUIREMENTS

 

Reverse Osmosis drinking water filtration systems contain 

treatment components that are critical for the effective reduction of 

Total Dissolved Solids (TDS) as well as some inorganic chemical 

contaminants.  It is strongly recommended that the user test the water 

periodically (every six (6) months minimum) to verify that the system is 

performing satisfactorily. Routine maintenance is necessary in the form 

of sediment, granulated carbon filter and membrane module, based on 

the following guidelines:

• Sediment Replacement Filters, Granulated Carbon Replacement

Filters&CarbonBlockReplacementPost-Filters:Changeevery

 

twelve (12) months, at the rated capacity or sooner if a noticeable 

reduction in flow rate occurs.

• ROMembrane Replacement Module:  Change it as required based 

on 90 Percent Rejection.  The recommended maximum service 

life is thirty-six (36) months, at the rated capacity or sooner if a 

noticeable reduction in flow rate occurs.

How Much Water Should the Tank Hold?

 

The amount of water the storage tank will hold is determined by the 

air precharge and the feed water pressure.  The RO system will fill the 

tank until the pressure in the tank reaches two-thirds of the feed water 

pressure.  With an air precharge of 7-8 psi (48-55 kPa), the following 

chart lists approximate storage capacities when the tank is full:
Feed Water Pressure 

Tank Capacity

80 psi (552 kPa) 

 2.2 gallons (8.3 liters)

60 psi (414 kPa) 

 2.1 gallons (7.9 liters)

40 psi (276 kPa) 

 1.5 gallons (5.7 liters)

B.  REPLACING THE FILTERS

NOTE: It is essential that the filters be installed in the correct 

location.  Use the icon coded labels to match the filter cartridges with 
their corresponding filter head.

 

The life of the filters generally depends on the local water conditions 

(i.e., sediment, rust and/or chlorine levels) while the life of the post-filter 

is generally determined by the length of service.

When to Replace the Sediment Replacement Filter

Every twelve (12) months

 or sooner depending on local water conditions.

Anoticeabledecreaseinwaterproductionisanindicationthatthe

 

filter requires changing.

When to Replace the Granulated Carbon Replacement Filter

 

The granulated carbon replacement filter reduces free chlorine in the 

feed water supply to protect the TFCM membrane from chlorine attack. To 

find out the chlorine level in a water supply, call the public water supplier.

When to Replace the Carbon Block Replacement Post-Filter

• If the filter is being used to control tastes and odors, replace it every 

twelve (12) months or sooner depending on local water conditions.

How to Replace the Filters (See Fig. 9 for filter identification)

1)  Lift up on the faucet handle and close the cold water feed valve.  Wait 

five (5) minutes for the filtration assembly to completely depressurize.

2)  Remove cover.

3)  Twist the existing filter 1/4 turn to the left so that the ears on the 

filter are able to disengage from the head.  Firmly pull the filter from 

the head.  It may be necessary to twist the filter slightly from side 

to side to help free it.

4)   Remove the new replacement filter from its protective wrap.  

(Double check to see that it is the correct replacement by 

comparing the labels.)

5)   Remove the protective sanitary cap from atop the replacement filter.

6)  Ensure both o-rings are present on the replacement filter and are 

seated into grooves; moisten o-rings with water.  DO NOT use any 

petroleum products to lubricate the o-rings. 

7)  Line up the filter ears, insert the filter and push it into the head until it 

is fully seated.  Twist the filter 1/4 turn to the right to lock it into place.  

(See Fig 7)

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

9)  RO System Flush Instructions

Sediment&GranulatedCarbonReplacementFilters—Closetank.

Lift the faucet handle and flush at least two (2) gallons of water 

through system (approximately 10 minutes). 

 

Carbon Block Post-Filter — Open tank. Lift the faucet handle 

and flush at least two (2) gallons of water through post-filter 

(approximately 30 minutes with tank empty or 5 minutes with 

tank full). It may be necessary to continue flushing until water 

becomes clear.

C.  REPLACING THE RO MEMBRANE MODULE

 

The life of the RO membrane module depends on the local water 

conditions and proper maintenance, e.g., regular module changes.  

Undertypicalconditions,theROmembranemodulelifeisthirty-six(36)

months or sooner.  Unlike the replacement filters, the RO membrane

module life is not determined by the amount of water used because of 

its self-cleaning feature.

How to Replace the RO Membrane Module

1)  Lift up on the faucet handle and close the cold water feed valve. 

Wait five (5) minutes for the filtration assembly to completely 

depressurize.

2)  Remove cover.

3)  Make sure that there is some slack in the red SFC tubing 

 

connected to the fitting at the bottom of the RO membrane  

module.  Twist the module 1/4 turn to the left (counterclockwise) 

so that the tubing connection is accessible.  (See Fig 7)

4)  Remove existing red SFC tubing from faucet adapter and membrane 

module by depressing the small collet and pulling the tubing away 

from the fittings.

II. Operation & Maintenance Instructions

10

Failure to install, operate or maintain your filter system in accordance with these use instructions or 

any other installation or use instructions accompanying this product may result in product failure and 

property damage, including water leakage and will void warranty.

 •

Replacement of filters will result in the need to sanitize the filtration 

system and/or the storage tank.  Please refer to Section D “Sanitizing 

the RO System” on page 11 for further instructions.

IMPORTANT NOTES

 


background image

5)  Firmly pull the module away from the head.  (It may be 

 

necessary to twist the module slightly from side to side.)

6)  Remove the new RO membrane module from its protective 

wrap.  (Double check to see that it is the correct replacement by  

comparing the labels.)  

7)  Remove the sanitary plastic cap on top of the module.

8)  Ensure both o-rings are present on the replacement filter and are 

seated into grooves; moisten o-rings with water.  DO NOT use any 

petroleum products to lubricate the o-rings.

9)  Connect the new red SFC reject tubing (supplied with replacement 

membrane module) by inserting it into the fitting at the bottom of 

the new RO membrane module as far as it will go, and into the 

faucet adapter.  Line up the module ears, insert the module and 

push it into the head until it is fully seated.  Twist the module 1/4 

turn to the right (clockwise) to lock it into place.

10)  Open the cold water feed valve, and carefully check for leaks.  Carefully 

inspect the fitting at the bottom of the new RO membrane module.

11)  For sanitization of RO system please follow instructions below in 

Section D.

12)  Flush membrane module - refer to Section M, Step 1 and 2 on 

page 8.

D.  SANITIZING THE RO SYSTEM

Follow the sanitizing procedure for the storage tank and the filtration 

assembly outlined below, followed by 24 hour flush with tank empty 

and faucet open.

To help provide you with the highest quality water from your RO 

Drinking Water Filtration System, it is important to routinely sanitize 

both the storage tank and the filtration assembly as noted below.

IMPORTANT NOTE:  These procedures are only intended to be part of 

a routine maintenance program only and are not designed to sanitize 

systems that have become highly contaminated from misuse.

When to Sanitize the Storage Tank

•  Uponstart-upasdescribedinthebeginningofthismanual.

•  After any servicing or routine maintenance which involves the RO 

 

membrane module, carbon block post-filter, storage tank or faucet.

When to Sanitize the Filtration System

•  After any servicing or routine maintenance which involves the 

 

sediment and granulated carbon replacement filters or the RO    

 

membrane replacement module.  

How to Sanitize the Storage Tank and Filtration System

Sanitizing the storage tank generally requires:
•  Common household bleach (5.25% non-scented)

•  Eye dropper or plastic oral syringe

1)  Close the cold water feed valve and lift up on the faucet handle to  

 

empty the water in the storage tank.  It should feel light when  

 empty.

2)  Disconnect the 3/8” yellow tubing (system tank) from the ball 

valve on top of the storage tank.

3)  Insert into the yellow tubing 1/2 teaspoon (3 ml) of household 

bleach.  (See Fig 8)

4)  Reconnect the yellow tube to the tank ball valve.

5)  Close the RO faucet and open the cold water feed valve.

6)  Wait 4-5 hours.

7)  Life up the handle of the RO faucet and allow contents of tank to 

drain completely into the sink.

8)  Sanitizing is now complete.

9)  If there is any residual chlorine/bleach taste in the next tank full, 

drain tank completely a second time.

E. LONG TERM NON-USE

 

If the RO system is to be left unused for a long period of time  

(greater than 30 days), install new replacement filters.

11

Remove the red SFC tubing from

the fitting before completely

removing the RO membrane module

Fig. 7

WARNING

To reduce the risk associated with ingestion of water contaminated 

with sanitizer:

 •Afterinstallation,sanitizersmustbeflushedfromthesystem

before first use as directed within the installation instructions.

 


background image

12

Fig. 8

Fig. 9

Carbon Block (post)

Membrane

Granulated Carbon

Sediment

III. Limited Warranty

Limited Warranty:  3M Purifi cation Inc. warrants this Product will be free 

from defects in material and manufacture for the following periods from 

the date of purchase. Twelve (12) year for the Product, except for the re-

placement fi lter cartridges and membrane, which are warranted for one (1) 

year. 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 with local water condi-

tions and water consumption. 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.    

This warranty gives you specifi c legal rights, and you may have other 

rights which may vary from state to state, or country to country.  For any 

warranty questions, please call 

855-3M-WATER (855-369-2837)

 or mail 

your request to: Warranty Claims, 3M Purifi cation Inc., 400 Research 

Parkway, Meriden, CT 06450.  Proof of purchase (original sales receipt) 

must accompany the warranty claim, along with a complete description of 

the Product, model number and alleged defect.
Limitation of Liability:  3M Purifi cation Inc. will not be liable for any loss 

or damage arising from this 3M product, whether direct, indirect, special, 

incidental, or consequential, regardless of the legal theory asserted, includ-

ing warranty, contract, negligence or strict liability.  Some states and coun-

tries do not allow the exclusion or limitation of incidental or consequential 

damages, so the above limitation or exclusion may not apply to you.   

3M is a trademark of 3M Company.

© 2014 3M Company.  All rights reserved.

34-8714-4684-4

3M Purifi cation Inc.

400 Research Parkway

Meriden, CT 06450

855-3M-WATER (855-369-2837)

www.3MWater.com