Microline T.F.C.-300 Manual

R.O.DRINKING WATER SYSTEM
MODEL T.F.C.-300
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.
DO NOT USE WITH WATER THAT IS MICROBIOLOGICALLY UNSAFE OR OF UNKNOWN QUALITY,
WITHOUT ADEQUATE DISINFECTION BEFORE OR AFTER THE SYSTEM.

TABLE OF CONTENTS
Page
SECTION I. INTRODUCTION ................................................................................3
SECTION II. SPECIFICATIONS ...............................................................................5
SECTION III. INSTALLATION STEPS.......................................................................6
A. Faucet Installation ..................................................................................... 6
B. Feed Water Saddle Valve Installation ....................................................... 8
C. Drain Clamp Installation........................................................................... 8
D. R.O. Manifold Assembly Installation........................................................ 9
E. Position the Drinking Water Holding Tank
and Make the Final Hose Connections.....................................................9
F. Start Up ................................................................................................... 10
SECTION IV. OPERATION AND MAINTENANCE ...............................................10
A. Normal Operation ................................................................................... 10
B. Changing Filters....................................................................................... 11
SECTION V. TROUBLE SHOOTING GUIDE ........................................................12
EXPLODED VIEW AND PARTS LIST ................................................................................14

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 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. Activated carbon particles
contain 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 chlorine as well as
other substances that contribute to taste and odors.
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 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 POST FILTER–The
product water from the Holding Tank passes
through the Activated Carbon Post Filter on the
way to the Dispensing Faucet. The Activated
Carbon Post Filter has been designed to reduce
tastes and odors that may pass through the system.
It adds a final “polish” to the water.
AUTOMATIC SHUT–OFF 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.
TYPICAL T.F.C.–300 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
3
4
5
6

4
OPTIONAL T.F.C.–300 BASEMENT INSTALLATION DIAGRAM
DISPENSING
FAUCET
PRODUCT
(3/8” Blue)
NOTE: FOR BEST FLOW RATE,
KEEP TUBING FROM R.O.
MANIFOLD TO DISPENSING
FAUCET AS SHORT AS
POSSIBLE
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
NOTE: FOR BEST FLOW RATE, KEEP
TUBING FROM HOLDING TANK TO R.O.
MANIFOLD AS SHORT AS POSSIBLE
FEED WATER
SADDLE VALVE
(COLD WATER
LINE ONLY)
INLET
(1/4” Red)
DRAIN
(1/4” Black)
1” AIR GAP
REQUIRED

5
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 Production140-60 gpd 151-227 lpd
Membrane TDS Reduction193% minimum 93% minimum
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
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 600 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.
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 to 12 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. 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.
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.

7
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.

8
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.)
FEED WATER SADDLE VALVE
Cold Water
Line
Saddle
Valve
Handle
Insert
Plastic
Ferrule
Tubing To
Manifold
Inlet
Compression
Nut
Tightening
Screw
Reversible
Back Plate
Figure 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.
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.
C. Drain Clamp Installation
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
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.
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.

9
3. Locate the 3/8" Black Drain Tubing which is
attached to the faucet.
NOTE: When cutting the polytubing make
clean, square cuts, failing to do so could result
in poor connections and possible leaks.
NOTE: 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.
•Route the tubing to the Drain Clamp and
trim to length.
•Insert the tubing into the Drain Clamp. Make
sure the tubing is pressed all the way in.
D. R.O. Manifold Assembly Installation
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 particle
board 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 (5 mm) 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 attached
to the faucet. 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.
4. Locate the 3/8" Blue Product Water Tubing
attached to the faucet. Remove the blue plug
from the the elbow connected to the fitting
labelled “Out” on the manifold. Route the
tuning to the elbow fitting and trim to length.
Insert the tubing into the elbow fitting.
5. Locate the 3/8" Yellow Tubing. Remove the
yellow plug from the fitting on top of the
manifold labelled “Tank” and insert the tubing.
(Refer to Fig. 1.)
6. Hang the Manifold Assembly on the
mounting screws and tighten. DO NOT
OVERTIGHTEN.
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.
2. Pull the cap/plug off the top of the tank where
the Tank Shut–Off should go. (Refer to Fig. 1.)
3. Wrap Teflon tape 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 which is attached
to the elbow on top of the manifold and run
the tubing along its course to the tank and trim
to length. Insert the tubing into the Holding
Tank Shut–Off Valve fitting. Make sure the
tubing is pressed in all the way past the O–ring.
The fitting will grab the tubing and seal it in
place.

10
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. IV, 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 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 Activated Carbon Post Filter to be
rinsed out. This is normal for the first tank
of water or after the Activated Carbon Post
Filter is changed.
SECTION IV. 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 Filter. After this water is rinsed to drain,
the removal rate should stabilize at a value of
greater than 75%.
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 Shutoff 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.

11
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 Sediment/Carbon Prefilter and the
Activated Carbon Post Filter.
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 6 to 12
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. III, 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 3 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.
•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
Manifold (see Fig. 1). Put 50 drops of bleach
(this is ½ tsp. or 3 ml) into the tubing and
reconnect it.
•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.
•When the Faucet is first opened, expect air
and carbon fines (very fine black powder),
from the new Activated Carbon Post Filter to
be rinsed out. This is normal for the first tank
of water.

12
SECTION V. 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/Carbon Prefilter or
Activated Carbon Post Filter.
Replace filters.
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.
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 flow, the Drain Restrictor is
plugged.
Clear or replace Drain Restrictor.
No drain flow, the drain orifice 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
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 refill (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/Carbon Prefilter. Replace Filter.
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,
find and correct the problem.
Replace Membrane.

13
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 flow, Drain Restrictor is
clogged.
Clear or replace Drain Restrictor.
No drain flow, the drain orifice 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 Activated Carbon Post Filter 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 Activated Carbon Post Filter is
exhausted.
Replace Filter.
There is foreign matter in the Holding
Tank.
Clean, flush and sanitize the system.
Replace the filters.
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.
Drain Water overflows 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 flow 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 fitting. Before replacing a fitting, re–cut the tubing
and re–insert into the fitting to see if that solves the leak. If pipe threads are
leaking, remove and retape with Teflon tape.

14
MADE IN USA



1
2
3
4
5
6
7
8
9
10
11
12
13
14
17
19
18
EXPLODED VIEW & PARTS LIST
16
15
15

15
DRAWING NO. PART NO. DESCRIPTION
1...................... S2009 ..................................... Self Tapping Screw
2...................... S2005-01................................ ASO Cap
3...................... S2013 ..................................... ASO Cap O–Ring
4...................... S2011 ..................................... ASO Diaphragm – Large
5...................... S2007-01................................ ASO Piston
6...................... S2006-01................................ ASO Piston Ring
7...................... S2010 ..................................... ASO Diaphragm – Small
8...................... NSSTF0405M38PP ............... Manifold Plate Assembly
(Includes diagram numbers 1 through 10, 15, 16)
9...................... S1276 ..................................... Check Valve
10...................... S1277 ..................................... Check Valve Retainer
11...................... S7028 ..................................... Sediment/Carbon Prefilter
12...................... S1764RS ................................ T.F.C. R.O. Membrane 50 gpd (189 lpd)
13...................... S3069 ..................................... Housing O–Ring
14...................... S7029–09 ............................... Housing
15...................... PK–A6TEU4–MG................. 1/4" Post X 3/8" Polytube Elbow
16...................... S2116–5 ................................. Drain Restrictor 50 GPD (189 lpd) Green
17...................... S7025 ..................................... Activated Carbon Post Filter
18...................... S3072 ..................................... Wrench for Housing
19...................... S1405 ..................................... 1/4"–3/8" Fitting Wrench
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
4...................... S1118–01 ............................... Feed Water Saddle Valve
5...................... C2000F .................................. Holding Tank
6...................... S1037 ..................................... Holding Tank Shut–Off Valve

Form No. S1462-03
4/21/08
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 R.O. Drinking Water System when
installed and operated within recommended parameters, with the exceptions stated below.
How Long Does The Coverage Last?
The manufacturer 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 The Manufacturer Do?
The manufacturer 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 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 the manufacturer's replacement parts since improper parts or incorrectly
performed maintenance or repair voids this warranty.
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.
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.
Your Water Treatment Professional: