Microline T.F.C. - 435 Manual

R.O.DRINKING WATER SYSTEM
MODEL T.F.C. - 435
INSTALLATION, OPERATION & SERVICE MANUAL
IMPORTANT NOTICES:
This reverse osmosis system contains replaceable treatment components critical for effective performance. It is the user's
responsibility to, and the manufacturer strongly recommends that the user, periodically test the product water to verify the system is
performing satisfactorily. See the test kit(s) for sampling instructions.
This system is acceptable for treatment of influent concentrations of no more than 27 mg/L nitrate and 3 mg/L nitrite in
combination measured as N and is certified for nitrate/nitrite reduction only for water supplies with a pressure of 280 kPa (40 psig)
or greater.
This system conforms to NSF/ANSI Standard 58 for pentavalent arsenic reduction. See the Performance Data Sheet and Arsenic
Facts section for an explanation of reduction performance.
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 filterable cysts.
Drink With Confidence!
Tested and Certified by NSF International against
NSF/ANSI Standard 58 for the reduction of the claims
specified on the Performance Data Sheet.
MICROLINE®

TABLE OF CONTENTS
Page
SECTION I. INTRODUCTION ................................................................................3
SECTION II. SPECIFICATIONS ...............................................................................5
SECTION III. PREPARATION ....................................................................................6
A. Major System Components ....................................................................... 6
B. Tools Recommended for Installation......................................................... 6
C. Site Selection For Major System Components .........................................6
SECTION IV. INSTALLATION STEPS.......................................................................7
A. Faucet Installation ..................................................................................... 7
B. Feed Water Saddle Valve Installation ....................................................... 9
C. Drain Clamp Installation........................................................................... 9
D. R.O. Manifold Assembly Installation...................................................... 10
E. Position the Drinking Water Holding Tank
and Make the Final Hose Connections................................................... 10
F. Start Up ................................................................................................... 11
SECTION V. OPERATION AND MAINTENTANCE .............................................12
A. Normal Operation ................................................................................... 12
B. Changing Filters....................................................................................... 12
C. Changing the In–Line Activated Carbon Post Filter ............................. 13
SECTION VI. TROUBLE SHOOTING GUIDE ........................................................14
EXPLODED VIEW AND PARTS LIST ................................................................................16
CAUTION:
The Centers for Disease Control and Prevention (CDC) and the Environmental Protection Agency (EPA) have issued guidance to people with
severely weakened immune systems who may want to take extra precautions to reduce the risk of infection with Cryptosporidium from drinking
water. This guidance pertains to people with HIV/AIDS, patients receiving treatment for cancer, recipients of organ or bone marrow transplants,
transplant patients taking immunosuppressive drugs, and persons who have congenital immunodeficiencies.
The EPA has stated that they do not know the significance of drinking water compared to other possible sources of Cryptosporidium to determine
how most people become infected. The CDC-EPA guidance suggests that immunosuppressed individuals discuss their risks with their health care
provider.
This drinking water system is tested and Certified by NSF International to NSF/ANSI Standard 58 for cyst reduction. It meets the NSF/ANSI
standard of reducing at least 99.95%* of cysts (including Cryptosporidium), however, because this is not 100%, immunosuppressed individuals
should take the extra precaution of boiling their drinking water. According to the CDC-EPA, bringing water to a rolling boil for one minute is the
most certain approach for killing Cryptosporidium.
All individuals should take adequate precautions when changing the filter cartridges, including wearing protective gloves, to avoid direct contact
with the exhausted cartridges.
*For complete specifications, refer to the Performance Data Sheet.

3
SECTION I. INTRODUCTION
Your new Reverse Osmosis (R.O.) Drinking Water
System uses a combination of filtration technologies
to reduce unwanted contaminants in a water supply.
The following steps combine to give you the best in
clear sparkling drinking water:
MECHANICAL FILTRATION/ACTIVATED
CARBON–The sediment prefilter has been
designed to help reduce the larger particles such as
silt, rust and scale. Its 5 micron (equal to 0.0002
inch) nominal rating helps to give maximum life
to the R.O. Membrane. The activated carbon
in the Prefilter has been designed to reduce any
chlorine that may be present in the feed water.
This pretreatment is also necessary for membrane
protection.
REVERSE OSMOSIS MEMBRANE–The R.O.
Membrane is the heart of the filtration system.
It is designed to reduce the dissolved mineral
content of the water. Minerals picked up in the
environment by the water are measured as Total
Dissolved Solids (TDS). In the Reverse Osmosis
process, dissolved minerals are separated from
the incoming water (Feed Water) to produce the
product water (the Permeate). The excess minerals
are rinsed to drain (the Reject Water).
The membrane is a specially constructed, fully
aromatic polyamide film and is classified as a Thin
Film Composite (T.F.C.).
The spiral wound construction of the R.O.
Membrane provides maximum surface area for
water production and is less susceptible to fouling
by particulate matter, turbidity and colloidal
materials.
ACTIVATED CARBON–The Activated Carbon
Post Filter contains carbon particles with a vast
network of pores. The tremendous surface area
of these pores (typically 800–1200 square meters
per gram of carbon) gives the carbon very good
adsorptive sites for substances that contribute to
tastes and odors.
IN–LINE ACTIVATED CARBON POST
FILTER–The In–Line Activated Carbon Post
Filter is located after the Holding Tank and has
been designed to reduce the tastes and odors that
may pass through the system. It adds a final polish
to the water.
AUTOMATIC SHUTOFF VALVE–The
ASO Valve senses when the Holding Tank is full
and closes the feed water supply to prevent excess
reject water from going to drain when the unit is
not producing water.
WATER QUALITY MONITOR–The optional
Water Quality Monitor has been integrated into
TYPICAL T.F.C.–435 UNDER SINK INSTALLATION DIAGRAM
Figure 1
DISPENSING
FAUCET WITH
AIR GAP
DRAIN CLAMP
DRAIN
(3/8" Black)
PRODUCT
(3/8" Blue)
RO MANIFOLD
DRAIN
(1/4" Black)
INLET
(1/4" Red)
TANK
(3/8" Yellow)
DRINKING
WATER
HOLDING TANK
HOLDING TANK
SHUTOFF VALVE
(Open Position)
FEED WATER
SADDLE VALVE
(Cold Water Line Only) LOCATE DRAIN CLAMP
ABOVE "P" TRAP
4" MIN
ACTIVATED
CARBON
POST FILTER
HOUSING
REVERSE
OSMOSIS
MEMBRANE
HOUSING
SEDIMENT/
CARBON
PREFILTER
HOUSING
1
2
4
7
8
9
(1/4" Yellow)
POLYTUBE
TEE
IN-LINE
ACTIVATED
CARBON
POST FILTER
5
6
COVER
3
FOR COVER WITH
OPTIONAL WATER
QUALITY MONITOR
SEE EXPLODED VIEW
AT THE END OF THIS
MANUAL

4
OPTIONAL T.F.C.–435 BASEMENT INSTALLATION DIAGRAM
DISPENSING
FAUCET
PRODUCT
(3/8” Blue)
NOTE: FOR REFRIGERATOR
WATER DISPENSER OR
ICE MAKER HOOKUP, TEE
INTO 3/8" BLUE TUBING TO
DISPENSING FAUCET.
HOLDING TANK
SHUTOFF VALVE
(Open Position)
TANK
(3/8” Yellow)
RO MANIFOLD
DRINKING
WATER
HOLDING
TANK
MOUNT HOLDING
TANK ON SHELF OR
STRAP BETWEEN
FLOOR JOISTS
(shelf or straps not
included)
ACTIVATED
CARBON
POST FILTER
HOUSING
REVERSE
OSMOSIS
MEMBRANE
HOUSING
SEDIMENT/
CARBON
PREFILTER
HOUSING
BASEMENT
FLOOR
PLEASE NOTE: IF AIR GAP IN FAUCET IS NOT USED IN BASEMENT
INSTALLATIONS, A PROPER AIR GAP MUST BE CREATED. PLEASE
CHECK WITH LOCAL PLUMBING CODES. SEE EXAMPLE ABOVE.
FLOOR
FEED WATER
SADDLE VALVE
(COLD WATER
LINE ONLY)
INLET
(1/4” Red)
DRAIN
(1/4” Black)
1” AIR GAP
REQUIRED
POLYTUBE
TEE
IN-LINE
ACTIVATED
CARBON
POST FILTER
(1/4" Yellow)
FOR COVER WITH OPTIONAL WATER
QUALITY MONITOR SEE EXPLODED
VIEW AT THE END OF THIS MANUAL
COVER

5
the system cover for instant monitoring at the
touch of a button. The monitor compares the level
of the total dissolved solids in the incoming (feed)
water versus the product water and calculates
the percent rejection. The monitor is preset to
indicate a level of 75% rejection. NSF/ANSI
Standard 58 requires a 75% total dissolved solids
rejection to pass the requirement of the standard.
A green light indicates that the percent rejection
is at or above the set (desired) value and that the
system is producing quality water.
An amber light indicates that the product
water quality is less than acceptable. Because
the Water Quality Monitor was designed to
operate best while the system is making water,
a false reading may occur if tested when your
R.O. drinking water system is not making water.
Please empty the Holding Tank, wait 15 minutes
for the system to begin making water, and test
your water quality again. If the Water Quality
Monitor light is still amber, please contact a water
treatment professional for service. The Water
Quality Monitor requires a 9 volt battery, which
is included. Systems not equipped with a Water
Quality Monitor contain a Water Quality Test Kit.
SECTION II. SPECIFICATIONS
TABLE A – QUALIFIED SYSTEM PERFORMANCE
Because the performance of an R.O. Membrane is highly dependent upon pressure, temperature, pH and TDS, the
following should be used for comparison purposes only.
U.S. Metric
Membrane Production141-53 gpd 155-201 lpd
Membrane TDS Reduction196% minimum 96% minimum
System Production² 14 gpd 53 lpd
Recovery Rating² 38% 38%
Efficiency Rating² 22% 22%
TDS Reduction² 90%+ typical 90%+ typical
Drain (reject water) Flow 3–5 x product flow 3–5 x product flow
Empty Storage Tank Precharge 5–7 psig air 35–48 kPa air
Storage Tank Capacity2 1.8 gallons 6.8 liters
1Industry standards measure R.O. Membranes performance with no backpressure on the product water, at 65 psig (448kPa) and 77°F (25°C). Further
conditions on the above are 250 ppm TDS. Production rate and TDS reduction figures are for a new Membrane that has been rinsed for 24 hours. The production
rate of a new Membrane can decrease by 10% per year or more, depending upon the scaling and fouling tendencies of the Feed Water.
2Measured at 50 psig, 77°±2° F, 750±40 mg/l TDS per section 6 of NSF/ANSI Standard 58. Recovery rating means the percentage of the influent water to the
membrane portion of the system that is available to the user as reverse osmosis treated water when the system is operated without a storage tank or when the
storage tank is bypassed. Efficiency rating means the percentage of the influent water to the system that is available to the user as reverse osmosis treated
water under operating conditions that approximate typical daily usage. This reverse osmosis system contains a replaceable component critical to the efficiency of
the system. Replacement of the reverse osmosis component should be with one of identical specifications, as defined by the manufacturer, to assure the same
efficiency and contaminant reduction performance.
TABLE B – RECOMMENDED OPERATING LIMITS FOR FEED WATER
Specifications T.F.C. Membrane
Water Pressure 40–100 psig (280–690 kPa)
TDS 2000 ppm (also mg/l) max.
Temperature 40–100°F (4–38°C)
pH 4–11 (optimum rejection at pH 7.0 - 7.5)
Hardness Less than 10 gpg (170 mg/l) or soften
Iron Less than 0.1 ppm (also mg/l)
Manganese Less than 0.05 ppm (also mg/l)
Hydrogen Sulfide None
Chlorine See note
Bacteria Must be potable**
NOTE: Chlorine will damage a T.F.C. Membrane. The Sediment/Carbon Prefilter has been designed to reduce chlorine from the incoming
water. Change filter every 6 months, more often if the water contains more than 1 ppm chlorine.
**DO NOT USE WITH WATER THAT IS MICROBIOLOGICALLY UNSAFE OR OF UNKNOWN QUALITY, WITHOUT ADEQUATE
DISINFECTION BEFORE OR AFTER THE SYSTEM.

6
SECTION III. PREPARATION
A. Major System Components
The following components comprise the R.O.
Drinking Water System. (Refer to Fig. 1, page 3 for
general system layout.)
• An R.O. Manifold assembly.
• Housings and Housing O–rings.
• A Drinking Water Holding Tank.
• A Dispensing Faucet.
• A Feed Water Saddle Valve.
• A Drain Clamp.
• Plastic Tubing and tube connectors.
• A Reverse Osmosis Membrane sealed in a
plastic bag.
• A Sediment/Carbon Prefilter, shrink wrapped.
• An Activated Carbon Post Filter, shrink
wrapped.
• An In–Line Activated Carbon Post Filter,
shrink wrapped.
• R.O. System Cover with or without optional
Water Quality Monitor.*
• Water Quality Test Kit for systems without the
Water Quality Monitor.
• Other items necessary for installation may
include wood screws or machine screws and
nuts for mounting the manifold, or concrete
anchors for hanging on basement wall.
Additional tubing or tube connectors. Plastic
wire ties for organizing tubing.
* The Water Quality Monitor may be necessary to conform
to state or local codes, check with the local plumbing
authority.
B. Tools Recommended for Installation
The following tools will cover most of the
installation sites encountered:
1. 3/8" variable speed electric drill.
2. Extension work light with outlet.
3. Safety glasses.
4. 1¼" porcelain hole cutter kit.
5. 1¼" Greenlee hole punch and 1/8" and ½"
metal drill bits for pilot hole.
6. Center punch and hammer.
7. 1¼" wood bit.
8. Concrete drill bits.
9. Assorted wood and metal drill bits including
7/32" metal drill bit.
10. Phillips head and flat blade screwdrivers.
11. ½", 9/16" and 5/8" open end wrenches.
12. 10" Crescent wrench with jaws taped to hold
faucet.
13. Basin wrench or 10" pipe wrench.
14. Teflon tape.
15. Wide masking tape or duct tape.
16. Plastic tubing cutter.
17. Extra plastic tubing.
18. Low range air pressure gauge.
19. Bicycle hand air pump.
20. Small bottle of liquid chlorine bleach.
21. Graduated measuring cylinder.
22. Paper towels, wisk broom and assorted clean up
materials.
C. Site Selection for Major System Components
The R.O. System was designed to fit under a sink,
however, because of space limitations or other
reasons, the system’s flexible design allows for
other locations. When determining the location
remember that access to a cold water tap line, the
household drain, and ease of filter replacement are
important considerations.
All components and tubing should be located
in an area which is not exposed to freezing
temperatures. If winter temperatures are severe, the
area should be above the minimum temperature
listed in Table B, page 5 for proper performance.
Do not expose unit or tubing to direct sunlight.
1. Dispensing Faucet–The faucet should be
placed near the sink where drinking water is
normally obtained. Convenience of use (filling
of water pitchers and glasses), and an open area
beneath the faucet under the sink for attaching
product and drain tubing are considerations.
A 2" diameter flat surface is required above
and below the installation site. The thickness
of the mounting surface should not exceed
1¼". Watch for strengthening webbing on the
underside of cast iron sinks.
2. Drinking Water Holding Tank–The Holding
Tank may be placed where it is convenient
within 10 feet of the faucet; under the sink or
in an adjacent cabinet are the best choices. If
a longer run of tubing is required, the tubing

7
should be the 3/8" diameter OD size to prevent
a high pressure drop. Remember, these tanks
can weigh up to 30 pounds when full of water;
a firm, level area is required.
3. R.O. Manifold Assembly–The manifold can
be installed on either the right or left side of
the under–sink area or a cabinet. The right
side is recommended because all the tubing
will be to the back of the cabinet and out of
the way. Installation in the basement is also
an option, one location is near the laundry/
utility sink where cold potable water and drain
access is handy. The mounting location should
allow adequate clearance and accessibility for
cartridge changes.
4. Feed Water Connection–The Feed Water
Saddle Valve should be located as close to
the manifold assembly as possible. USE A
POTABLE COLD WATER SUPPLY ONLY.
Softened water is preferred as it will extend the
life of the R.O. Membrane.
5. Drain Connection–The waste water must go to
drain through an anti–siphon air gap. The air
gap is provided for in the base of the faucet. If
discharging into a utility sink or standpipe, an
air gap of greater than 1" above the flood rim
must be provided.
Do NOT connect the system drain line to the
dishwasher drain or near the garbage disposal.
Backpressure from these units may cause the air
gap to overflow.
SECTION IV. INSTALLATION STEPS
All plumbing should be done in accordance with state
and local plumbing codes.
NOTE: Some codes may require installation by a
licensed plumber; check with the local plumbing
authority prior to installation.
In restricted under–sink areas, it may be easier to
install the faucet first. Allow adequate tubing lengths
for any final component position.
A. Faucet Installation – The faucet contains an
anti–siphon air gap. While the system is producing
water, the drain water flows from the R.O.,
through the air gap and then to the household
drain. The purpose of the air gap is to prevent
water in the drain from backing up into the R.O.
Drinking Water System.
The easiest installation is to use an existing spray
attachment hole. If the spray faucet hole is not
available, then the sink top must be drilled.
1. Mark the location of the center of the faucet
base.
2a. Drilling a stainless steel sink:
•Center punch the hole to provide a starting
point for the drill.
•Start with a smaller drill as a pilot, and then
drill a ½" diameter hole to accept the bolt
of a 1¼" Greenlee Hole Punch (1¼" chassis
punch).
•Clean away any chips.
•Install the punch and tighten the nut to cut
the hole.
•Deburr any sharp edges.
2b. Drilling a porcelain sink:
It is best to use a special 1¼" diameter cutter
designed for porcelain. A carbide tipped
masonry bit is a second choice.
•Place a piece of tape over the area to be
drilled to help prevent chipping.
•Drill a pilot hole for the porcelain cutter.
Use the pilot drill supplied with the kit or a
carbide tipped drill.
•When drilling the 1¼" hole, drill slowly and
carefully; the porcelain chips easily.
•After drilling, clean the area well. Iron filings,
if left in place, can cause rust stains.
2c. Drilling a counter top:
NOTE: The counter top must be less than 1¼"
thick. Treat ceramic tile as porcelain until the
tile is penetrated, then use the carbide tipped
metal cutter.
Formica counter tops may be drilled with a
good 1¼" wood bit; drilling a 3/32" pilot hole
will help keep the bit going straight.

8
3. Assemble the 1/8” Screws & Toggle Wings
into the Faucet Base. Adjust the Wings
approximately 1” plus the thickness of the
mounting surface away from the bottom of the
Faucet Base.
4. Place the Base Assembly through the mounting
hole on the sink or counter top.
Drop the handle of the Wrench through the
Faucet Base opening. This will separate and
orient the Toggle Wings. Position the Faucet
Base so that the arrows are pointing in the
direction that the faucet handle will face.
Tighten the 1/8” Screws with a Phillips
screwdriver. When the Toggle Wings make
contact with the mounting surface, adjust
the Faucet Base to the exact desired position.
Tighten the 1/8” Screws an additional 2 –3 turns
while holding the Faucet Base in place.
TAB
HOSE BARBS
3/8” QUICK
CONNECT FITTING
BLACK 3/8” POLYTUBE
(TO DRAIN CLAMP)
BLACK 1/4” POLYTUBE
(TO DRAIN PORT
ON RO SYSTEM)
BLUE 3/8” POLYTUBE
(PRODUCT OUTLET)
5. Connect the tubing to the Faucet. Push
the Blue 3/8” Polytube into the 3/8” Quick
Connect Fitting. Push the Black 3/8” Polytube
onto the large Hose Barb. Push the Black ¼”
Polytube onto the small Hose Barb.
6. Determine which direction the handle should
face (right or left). As shown, it can be
mounted in two directions. With the handle
facing the chosen direction, slide the fastened
Polytubes through the Faucet Base and slide
the Faucet Assembly into the Faucet Base,
lining up the tabs on the Faucet with the slots
on the Base. The Faucet Assembly may have
to rotate slightly to get the tabs into the slots.
When aligned, apply firm downward pressure
to get the Faucet to fully seat. After the Faucet
Assembly is seated, lock it into place by
rotating it clockwise about 30 degrees.

9
2b. To install on (hard) steel or brass tubing supply
line.
•The supply line should now be drained. Use a
battery powered or properly grounded drill to
avoid shock hazard.
•Drill a 3/16" hole in the supply line; (do not
drill through the opposite wall).
•Turn the handle to expose the lance no more
than 3/16" beyond the rubber gasket.
•Place the body of the valve over the hole so
that the lance fits into the hole.
•Assemble and tighten the brass screw.
•Turn the Valve Handle clockwise (inward)
until firmly seated. The valve is closed.
3. With the Feed Water Saddle Valve closed,
open the sink faucet and the water supply and
allow the water to run for a few minutes to
flush any debris caused by the installation.
•Close the faucet and check the Feed Water
Saddle Valve for leaks.
3/8" DRAIN CLAMP ASSEMBLY
Drain Clamp
Front Plate
Drain Pipe 1/4" Nut
1/4" Screw
Drain Clamp
Back Plate
Black Drain Tubing
Figure 4
C. Drain Clamp Installation
Choose the drain outlet location per Sec. III, C.5.
The following are instructions for discharging into
the sink drain pipe. (Refer to Fig. 1.)
1. Position the Drain Clamp on the sink drain
pipe above the drain trap. Allow room for
drilling. Tighten securely.
FEED WATER SADDLE VALVE
Cold Water
Line
Saddle
Valve
Handle
Insert
Plastic
Ferrule
Red Tubing To
Manifold
Inlet
Compression
Nut
Tightening
Screw
Reversible
Back Plate
Figure 3
B. Feed Water Saddle Valve Installation
Decide on location. Do NOT connect to a hot
water feed line. If you are not sure of the supply,
run the hot water and feel the supply piping.
Water over 100°F may cause permanent damage to
the R.O. Membrane. (Refer to Fig. 3.)
1. Shut off the water supply and drain the line.
2a. To install on (soft) Copper Tubing supply
line:
•Turn the Handle of the Feed Water Saddle
Valve counter clockwise (outward) until the
lance does not protrude from the gasket. It
may have to be pushed in.
•Assemble the Feed Water Saddle Valve on
the tubing.
–for 3/8" OD tubing use the back plate side
with the small groove to prevent distortion of
the tubing.
–for larger tubing (up to 5/8" OD) use the large
groove of the back plate.
•Assemble and tighten the brass screw.
•To pierce the tubing, turn the Valve Handle
fully clockwise (inward). A small amount of
water may escape from the outlet until it is
fully pierced.
•When you feel the Valve Handle firmly
seated in the clockwise direction, the copper
tube is pierced and the valve is closed.

10
2. Use a battery powered or properly grounded
drill. Using the Clamp port as a drill guide,
drill a 7/32" hole through the wall of the drain
pipe. Do NOT penetrate the opposite side of
the pipe.
3. Locate the 3/8" Black Drain Tubing connected
to the Dispensing Faucet. Route the tubing to
the Drain Clamp and trim to length.
NOTE: When cutting the polytubing make
clean, square cuts, failing to do so could result
in poor connections and possible leaks.
CAUTION: The lowest point of the line
should be the point of connection to the Drain
Clamp. There should be no sag in the line as
this may cause excessive noise as the reject
water is flowing to drain.
•Refer to Fig. 4. Insert the tubing into the
Drain Clamp. Make sure the tubing is pressed
all the way in to create a pressure-tight
connection.
NOTE: If you want to pull the tubing out for
some reason, push the ring around the tubing
in and pull the tubing out.
D. R.O. Manifold Assembly Instructions
Locate the site per Sec. III, C.3. Various
installation sites will require different types of
mounting fasteners; be sure the fastener selected
will provide a firm, solid mounting. A support
panel may be necessary on thin cabinet walls or
to span between wall studs on particleboard or
drywall.
Do not drill through exterior cabinet walls or
leave sharp wood screw points exposed in readily
accessible cabinet interiors.
The close proximity of a dishwasher or a trash
compactor may require special fabrication of a
mounting plate.
1. The mounting bracket will accept either
#10 or #12 (5mm) mounting screws spaced
on 6" (15 cm) centers. Allow at least 4" (10
cm) of clearance beneath the filter housings
to accommodate filter changes. Mark the
two locations (the bracket can be used as a
template). Install the screws and tighten them
until the heads are about 5/8" from the wall.
2. Locate the ¼" Red Feed Water Tubing.
Remove the red plug from the fitting labelled
“In” on the manifold and insert the tubing.
Reference the special supplement sheet in
the carton for proper connection of all tubing
and removal of plugs. Run the tubing along its
course to the Feed Water Saddle Valve, trim to
length. (Refer to Fig. 1.)
Refer to Fig. 3. To the end of the red polytube
install the Compression Nut, the Plastic
Ferrule, and the Insert. Connect to the Feed
Water Saddle Valve.
3. Locate the ¼" Black Drain Tubing. Remove
the black plug from the fitting labelled “Drain”
on the manifold and insert the tubing. The
end of the Black Drain Tubing that should be
inserted into the “Drain” port will have a green
drain restrictor in it. Run the tubing along its
course to the ¼" Hose Barb on the Dispensing
Faucet, trim to length and connect by firmly
pressing over the barb. Allow the tubing to
relax, then press firmly again to insure proper
seating.
4. Locate the ¼" yellow tubing with the tee
attached to one end. Remove the yellow plug
from the fitting labelled "Out" on the manifold
and insert the tubing.
5. Locate the 3/8" Blue Product Water Tubing.
Firmly press one end into the tee and the other
end into the faucet connector. (Refer to Fig.
1.) The fittings will grab the tubing and seal it
in place. Make sure the tubing is pressed all the
way in to create a pressure tight connection.
NOTE: If you want to pull the tubing out for
some reason, push the ring around the tubing
in and pull the tubing out.
6. Hang the Manifold Assembly on the
mounting screws and tighten. DO NOT
OVERTIGHTEN.
7. Remove the wrapping from the
In–Line Activated Carbon Post Filter. Slice
the 3/8" Blue Polytube where it would be
convenient to install and change the In–Line
Filter. Make a clean straight cut to insure
proper connections. The “Out” port on the
In–Line Filter should be toward the faucet.
Firmly press in the tubing. The fittings will
grab the tubing and seal it in place. Make sure
the tubing is pressed all the way in to create a
pressure tight connection.
E. Position the Drinking Water Holding Tank and
Make the Final Hose Connections.
1. Check the tank precharge pressure. Make sure
it is between 5 to 7 psig. If not, use a bicycle
hand pump or other pump to bring the pressure
up to the 5 to 7 psig range.

11
2. Pull the cap/plug off the top of the tank where
the Tank Shut–Off should go. (Refer to Fig. 1,
page 3.)
3. Wrap Teflon tape three times around the ¼"
male outlet thread. Wrap in the direction of
the threads (clockwise when looking down
on the Holding Tank). The tape will act as a
thread sealant. Screw on the Holding Tank
Shut–Off Valve.
4. Locate the 3/8" Yellow Tubing. Firmly press one
end into the Holding Tank Shut–Off Valve
and the other end into the tee. (Refer to Fig.
1, page 3.) The fittings will grab the tubing
and seal it in place. Make sure the tubing is
pressed all the way in to create a pressure tight
connection.
F. Start Up
At time of start up and each time the filters are
changed the system should be sanitized (also see
Operation and Maintenance Sec. V, B.1–4).
1. Sanitizing the system. Use a drip pan to aid
clean–up.
NOTE: The system should be sanitized
BEFORE installing the Sediment/Carbon
Prefilter, the Activated Carbon Post Filter or
the R.O. Membrane.
•Use a good quality unscented 5¼% liquid
chlorine household bleach.
•Open the Dispensing Faucet and open the
Holding Tank Shut–Off Valve (the handle
should be parallel with the valve body).
•Remove the plug on the underside of
the manifold labelled “SEDIMENT/
CARBON”. Pour one capful of bleach (this is
approximately 2 tsp. or 10 ml) into one of the
white Housings. Insert a Housing O–ring into
the Housing groove, (press firmly in place).
Engage and firmly tighten the Housing hand
tight only.
•Remove the plugs labelled “MEMBRANE”
and “ACTIVATED CARBON” from the
underside of the manifold. To each of the
remaining white Housings, add one capful of
bleach. Insert a Housing O–ring, engage and
firmly tighten the Housings hand tight only.
•Slowly open the Feed Water Saddle Valve
(turning counter clockwise).
•As soon as the water begins to come out of
the Dispensing Faucet, close the Faucet.
•Let stand for 15 minutes.
NOTE: During this time, check the system
carefully for leaks.
•At the end of 15 minutes, CLOSE the Feed
Water Saddle Valve and open the Dispensing
Faucet.
•Allow the Holding Tank to completely
drain, then remove the Sediment/Carbon
Filter Housing (the farthest of the three from
the In–Out ports), empty, and install the
Sediment/Carbon Prefilter. Firmly tighten the
Housing hand tight only.
•Remove the Activated Carbon Filter Housing
(the closest of the three to the
In–Out ports), empty, and install the
Activated Carbon Post Filter. Firmly tighten
the Housing hand tight only.
2. Installing the R.O. Membrane:
•Remove the R.O. Membrane Housing, (the
middle one), and empty.
•Insert the Membrane up into the manifold.
(The O–rings should be up toward the
manifold.) Check the Housing O–ring for
proper position in its groove, engage and
firmly tighten the Housing hand tight only.
3. Rinsing the system:
•Slowly open the Feed Water Saddle Valve
fully counter clockwise.
•The Holding Tank Valve should be open.
•Check the Air Gap Window on the
Dispensing Faucet to be sure that the drain
water is flowing. The R.O. System is now
making water.
•Do not open the Faucet for at least 8 hours.
•Do not use the first three full tanks of water.
CAUTION: The R.O. Membrane is shipped
with a preservative in it. To ensure proper
rinsing of the R.O. Membrane it is important
to wait at least 8 hours before emptying each
tank.
When the Faucet is first opened, expect air
and carbon fines (very fine black powder)
from the In–Line and Activated Carbon Post
Filters to be rinsed out. This is normal for
the first tank of water or after the Activated
Carbon Post Filters are changed.

12
SECTION V. OPERATION & MAINTENANCE
A. Normal Operation
1. It is normal for the Total Dissolved Solids (TDS)
of the water to be higher than normal during
the first 5 gallons of operation; this is due to the
sanitizing solution and the new Post Filters. After
this water is rinsed to drain, the removal rate
should stabilize at a value of greater than 75%.
The optional Water Quality Monitor measures
the TDS reduction and gives an indication of
proper performance. Water pressure affects the
production rate and quality.
2. R.O. systems produce drinking water at
relatively slow rates; it can take up to 5 hours
or more to fill the Holding Tank. Normal
operation is to let the Holding Tank fill with
water and then draw water as needed. When
the pressure in the Holding Tank falls to a
given pressure (as the water is being used) the
Automatic Shut–Off Valve (ASO Valve) will
start water production and the system will refill
the Holding Tank. When the Holding Tank is
full and no water is being used, the ASO Valve
will automatically shut off the feed water to
conserve water. The more water that is used
(up to the capacity of the system) the better the
R.O. system will function. Other uses for the
water are flowers, pets and rinsing glassware.
With each use it is recommended that you
run the faucet for at least 10 seconds prior to
using water. This is especially important if the
system has not been used daily. After periods of
non–use, such as a week of vacation, it is better
to empty the Holding Tank and allow the system
to produce fresh water for use. If the system is not
used for 3–4 weeks or longer, it is a good idea to
resanitize the system and to change the prefilter
and post filters.
B. Changing Filters
THIS R.O. SYSTEM CONTAINS FILTERS
WHICH MUST BE REPLACED AT REGULAR
INTERVALS TO MAINTAIN PROPER
PERFORMANCE. USE ONLY FACTORY
APPROVED FILTERS.
All individuals should take adequate precautions
when changing the filters, including wearing
protective gloves, to avoid direct contact with the
exhausted filters.
The recommended interval for changing the filters
(not the R.O. Membrane) is every six (6) months.
Typical T.F.C. Membrane life expectancy is three
years. Local conditions may dictate more frequent
changes.
NOTE: If the R.O. Membrane is to be replaced,
see Sec. IV, F.1–3 for the proper procedure.
Use a drip pan to catch any water that may spill
when the Filter Housings are removed. Refer to
Fig. 1 page 1 for component location.
1. Close the Feed Water Saddle Valve by turning
fully clockwise and open the Dispensing
Faucet. Allow the Holding Tank to empty.
2. Loosen and remove the Sediment/Carbon
Filter and the Activated Carbon Filter
Housings. Discard the filters.
3. Wash the inside of the Housings using a mild
detergent and a soft cloth. Do not use abrasive
cleaners or pads. Thoroughly rinse all soap
from the Housings before reassembly.
4. To sanitize the system and replace the filters:
NOTE: The system should be sanitized before
installing the Sediment/Carbon Prefilter and
Activated Carbon Post Filter.
•Use a good quality unscented 5¼% liquid
chlorine household bleach.
•Add one capful of bleach (this is 2 tsp. or
10 ml) to the Sediment/Carbon Filter
Housing and temporarily install the Housing
without the Sediment/Carbon Prefilter.
Check the Housing O–ring for proper
position in its groove, engage and firmly
tighten the Housing hand tight only.
•Add one capful of bleach to the Activated
Carbon Filter Housing. Carefully fill the
Housing with tap water and temporarily
install the Housing without the Activated
Carbon Post Filter.
•The Dispensing Faucet should be open, slowly
open the Feed Water Saddle Valve.
•As soon as water begins to drip out of the
Dispensing Faucet, close the Faucet.
•Let the system stand for 15 minutes.
•At the end of 15 minutes, in the following
order, close the Feed Water Saddle Valve,
close the Holding Tank Valve and open the
Dispensing Faucet to release the pressure.

13
•Remove the Sediment/Carbon Filter Housing
and empty. Remove the wrapping and install
the Sediment/Carbon Prefilter. Firmly tighten
the Housing hand tight only.
•Remove the Activated Carbon Filter Housing
and empty. Remove the wrapping and install
the Activated Carbon Post Filter. Firmly
tighten the Housing hand tight only.
•Disconnect the yellow product water tubing
that runs from the Holding Tank to the Tee
(see Fig. 1, page 3). Put 50 drops of bleach
(this is ½ tsp. or 3 ml) into the tubing and
reconnect it to the Tee.
NOTE: Now is the convenient time to
change the In–Line Activated Carbon Post
Filter, see Sec. V, C.1–6.
•Slowly open the Feed Water Saddle Valve.
When water begins dripping out of the
Dispensing Faucet, in the following order,
close the Faucet and then open the Holding
Tank Valve.
•Do not open the Faucet for at least 8 hours.
•Discard the first three full tanks of water
produced, they will contain chlorine.
IN–LINE ACTIVATED CARBON
POST FILTER ASSEMBLY
O
U
T
IN
In-Lin
e
A
c
tiv
a
t
ed
C
arbon P
os
t Filt
e
r
3
/
8
" Blue
T
o
Dispensin
g
F
a
u
ce
t
3
/
8
" Blue
Figure 5
C. Changing the In–Line Activated Carbon Post
Filter
1. Close the Feed Water Saddle Valve by turning
fully clockwise.
2. Close the Holding Tank Valve and then open
the Dispensing Faucet to release the pressure.
3. Remove the In–Line Activated Carbon Post
Filter. Disconnect the used Post Filter by
pressing in the connector’s collar and at the
same time pulling the tube out of the fitting.
4. Firmly reconnect the polytubes to the new Post
Filter. (Refer to Fig. 5). Make sure the tubing is
pressed all the way in to create a pressure tight
connection.
NOTE: If you want to pull the tubing out for some
reason, push the ring around the tubing in and
pull the tubing out.
5. Slowly open the Feed Water Saddle Valve.
6. When water begins dripping out of the Faucet,
in the following order, close the Faucet and
open the Holding Tank Valve. When the
Faucet is first opened, expect air and carbon
fines (very fine black powder), from the new
Post Filter to be rinsed out. This is normal for
the first tank of water.

14
SECTION VI. TROUBLE SHOOTING GUIDE
Problem Possible Cause Solution
Low quantity of Product Water
from Holding Tank
Feed Water Saddle Valve is plugged or
closed.
Open Valve or unclog.
Clogged Sediment Prelter or Activated
Carbon Prelter.
Replace lters.
Low water pressure Feed Water pressure must be above
40 psig.
R.O. Membrane is fouled. See Feed Water operating limits.
Correct cause of fouling, replace
Membrane.
Plugged In–Line Activated Carbon
Post Filter.
Replace Post Filter.
Air precharge pressure in Holding Tank
is too high.
Empty water from Holding Tank,
and with the faucet open, adjust air
pressure to 5–7 psig (35–48 kPa) range.
Air precharge is too low.
Air bladder in the Holding Tank is
ruptured.
Replace tank.
Holding Tank Valve is closed. Open Valve.
No drain ow, the Drain Restrictor is
plugged.
Clear or replace Drain Restrictor.
No drain ow, the drain orice in the
Dispensing Faucet is plugged.
Clear or replace the Dispensing Faucet.
The Check Valve is stuck. Free check.
The ASO Valve is malfunctioning. Replace ASO Valve components.
Low pressure at the Dispensing
Faucet
In-Line Activated Carbon Post Filter
is plugged.
Replace Post Filter.
Air precharge in the Holding Tank is
too low.
Empty water from Holding Tank and
with the faucet open, adjust the air
pressure to 5–7 psig (35–48 kPa) range.
Check for leakage at the Air Valve
Stem.
Holding Tank Valve is partially closed. Open Valve.
The Dispensing Faucet is out of
adjustment or faulty.
Repair or replace Dispensing Faucet.
Heavy water use, Holding Tank is
depleted.
Allow Holding Tank to rell (adding a
second Holding Tank will increase
storage capacity).
Low Water Production. See Low Quantity of Product Water
from Holding Tank section above
High Total Dissolved Solids (TDS) in
the Product Water
Clogged Sediment Prelter or Activated
Carbon Prelter.
Replace Filters.
Low Water Pressure. Feed Water Pressure must be above
40 psig.
Check Feed Water Saddle Valve.
R.O. Membrane O–ring is crimped. Check O–ring.
R.O. Membrane brine seal is not
sealing up into the manifold head.
Check the brine seal.
R.O. Membrane is expended. If Membrane life is unusually short,
nd and correct the problem.
Replace Membrane.

15
Problem Possible Cause Solution
High Total Dissolved Solids (TDS) in
the Product Water (continued)
The Product Water and Drain Water
lines are reversed.
Correct plumbing.
No drain ow, Drain Restrictor is
clogged.
Clear or replace Drain Restrictor.
No drain ow, the drain orice in
the Dispensing Faucet is plugged.
Clear or replace Dispensing Faucet.
The ASO Valve is not closing. Repair or replace the ASO Valve
Components.
New In-Line or Activated Carbon
Prelter not rinsed completely.
Flush with several full tanks of
Product Water.
The Feed Water TDS has increased. An increase in Feed Water TDS will
give a corresponding increase in
Product Water TDS.
Tastes and odors in the Product Water The In-Line or Activated Carbon
Prelter is exhausted.
Replace Filters.
There is foreign matter in the Holding
Tank.
Clean, ush and sanitize the system.
Replace the lters.
The Product Water and Drain Water
lines are reversed.
Correct plumbing.
Dissolved gasses in the Feed Water. Pretreat Feed Water to remove
dissolved gasses.
Increase in Product Water TDS. See high TDS in the Product Water
section.
Amber light on optional water quality
monitor
System not being used for extended
period of time.
Empty storage tank. Wait 15 minutes
for the system to begin making water
and test water quality again.
Filters are plugged or membrane is
fouled or exhausted.
Replace lters and/or membrane.
Drain Water overows at the
Dispensing Faucet
Air Gap is blocked. Clear Air Gap.
Rinse with vinegar for removal of
calcium buildup.
Drain tubing is clogged. Clear tubing.
Drain Clamp hole is misaligned. Align with hole in the drain pipe.
Excessive drain ow rate. Replace Drain Restrictor.
Faucet leaks or drips Leaks from base of the delivery
tube.
O–ring is bad, replace O–ring.
Fitting leaks in general Close the Feed Water Saddle Valve and relieve pressure before disconnecting
any tubing or replacing any tting. Before replacing a tting, re–cut the tubing
and re–insert into the tting to see if that solves the leak. If pipe threads are
leaking, remove and retape with Teon tape.

16
MADE IN USA



EXPLODED VIEW & PARTS LIST
19A .....Water Quality Test Kit
23..........Nitrate/Nitrite Test Kit
1
2
3
4
5
6
7
8
9
10
11
12
13
14
18
21
20
15
16
19
17

17
DRAWING NO. PART NO. DESCRIPTION
1......................S2009..................................... Self Tapping Screw
2......................S2005..................................... ASO Cap
3......................S2013..................................... ASO Cap O–Ring
4......................S2011..................................... ASO Diaphragm – Large
5......................S2007..................................... ASO Piston
6......................S2006..................................... ASO Piston Ring
7......................S2010..................................... ASO Diaphragm – Small
8......................NSCTA0405MNG................ Manifold Plate Assembly without Monitor
(Includes diagram numbers 1 through 10 and 16.)
or 8A ..................NSCTA0305MNG................ Manifold Plate Assembly with Monitor
(Includes diagram numbers 1 through 10, 15 and 16.)
9......................S1276..................................... Check Valve
10......................S1277..................................... Check Valve Retainer
11......................S7028..................................... Sediment/Carbon Prefilter
12......................S1229RS ................................ T.F.C. R.O. Membrane 50 gpd (189 lpd)
13......................S3069..................................... Housing O–Ring
14......................S7029–09............................... Housing
15......................R7078..................................... Optional Water Quality Monitor Board w/Probes
16......................S2116–5................................. Drain Restrictor 50 GPD (189 lpd) Green
17......................S2119–01NN......................... Cover
18......................S7025..................................... Activated Carbon Post Filter
19 or .................R2112..................................... Optional Water Quality Monitor Indicator and Cord
19A ..................S1580..................................... Water Quality Test Kit
20......................S3072..................................... Wrench for Housing
21......................S1405..................................... 1/4"–3/8" Fitting Wrench
22......................S7206W-JG ........................... In–Line Activated Carbon Post Filter
23......................S1447..................................... Nitrate/Nitrite Test Kit
OTHER COMPONENTS AS SHOWN IN FIGURE 1, PAGE 3.
DRAWING NO. PART NO. DESCRIPTION
1...................... R7100-CR.............................. Dispensing Faucet
2...................... S1117–01 ............................... 3/8" Drain Clamp Assembly
6...................... JG-PI301208S........................ 3/8" x 3/8" x 1/4" Union Tee
7...................... S1118–01 ............................... Feed Water Saddle Valve
8 or ................. C2000FP ................................ Plastic Holding Tank
8A .................. C2000F .................................. Steel Holding Tank
9...................... S1037 ..................................... Holding Tank Shut–Off Valve
OUT IN
IN–LINE ACTIVATED CARBON
POST FILTER
22

18
NOTES:

19
NOTES:

Form No. S1299-07
Updated 08/21/07
4462 Duraform Lane • Windsor • WI 53598-9716
Phone [phone]
www.microlinero.com
microline
®
R.O. DRINKING WATER SYSTEM
FIVE/ONE YEAR LIMITED WARRANTY
What Does This Warranty Cover?
This warranty covers any defects in materials and workmanship of the Microline®R.O. Drinking Water System
when installed and operated within recommended parameters, with the exceptions stated below.
How Long Does The Coverage Last?
Microline®will warrant its R.O. Drinking Water System (except for the reverse osmosis membrane), for a
period of five years from the date of purchase. The reverse osmosis membrane is warranted for one year from
date of purchase. All implied warranties including merchantability and fitness for a particular purpose are limited
to five years from the date of purchase for the R.O. Drinking Water System, except for the reverse osmosis
membrane which is limited to one year from date of purchase. Some states do not allow limitations on how long
an implied warranty lasts, so the above limitations may not apply to you.
What Will Microline®Do?
Microline®will repair or replace at its discretion any defective component. You must pay any labor charges. You
must also pay for shipping or travel charges to return the defective part(s).
What Does This Warranty Not Cover?
This warranty does not cover the disposable sediment and carbon filters whose service life depends on feed water
conditions. In addition, the membrane is only warranted if the required feed water conditions are met.
The above warranty will also not apply to any part of the Microline®R.O. Drinking Water System that
is damaged because of neglect, misuse, alterations, accident, misapplication, physical damage, or damage
caused by fire, acts of God, freezing or hot waters or similar causes. Consequential and incidental damages
are not recoverable under this warranty. Some states do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation or exclusion may not apply to you.
We recommend that you use only authorized Microline®replacement parts since improper parts or incorrectly
performed maintenance or repair voids this warranty. In addition, if non Microline®parts are used, contaminant
reduction claims, certifications to/from NSF/ANSI Standard 58, and/or state approvals are no longer valid.
How Do You Get Service?
In order to be eligible for service under this warranty you must (a) contact your local dealer who supplied the
unit or (b) contact the factory for the dealer nearest you.
How Does State Law Apply?
This warranty gives you specific legal rights and you may also have other rights which vary from state to state.