Greenway Home Products Pro Series Service manual

Water Technologies
Water Technologies
Water Technolo
g
ies
Pro Series
Reverse Osmosis Drinking Water System
Installation Instructions & Owner’s Manual

Ta b l e o f Co n T e n T s :
Introduction Page 3
Diagrams Page 4 - 5
Specifications Page 5
Preparation Page 6 - 7
Installation Steps Page 7 - 11
Operation and Maintenance Page 11 - 13
Technical Data Page 13 - 15
Troubleshooting Guide Page 16 - 17
Exploded View and Parts List Page 18
Warranty Back Cover
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.
Your Water Test
Hardness gpg
Iron ppm
pH number
*Nitrates ppm
Manganese ppm
Sulphur yes/no
Total Dissolved Solids

3
In T r o d u C T I o n
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:
The sediment prefilter will remove 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 will remove any chlorine that may be present in the feed water. This pretreatment is also
necessary for membrane protection.
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.
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.
The In–Line Activated Carbon Post Filter is located after the Holding Tank and reduces the tastes and
odors that may pass through the system. It adds a final polish to the water.
The ASO Valve senses when the product water 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.
MECHANICAL FILTRATION/ACTIVATED CARBON
IN–LINE ACTIVATED CARBON POST FILTER
REVERSE OSMOSIS MEMBRANE
AUTOMATIC SHUTOFF VALVE
ACTIVATED CARBON

4
TfC-435 ba s e m e n T In s T a l l a T I o n dI a g r a m

5
TfC-435 Ty p I C a l un d e r sI n k In s T a l l a T I o n dI a g r a m
speCIIfCaTIons
Qualified System Performance U.S. Metric
Membrane Production125 ± 5 gpd 76 - 114 lpd
Membrane TDS Reduction195% minimum 95% minimum
System Production28 gpd 30 lpd
TDS Reduction290%+ 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 Capacity21.8 gallons 6.8 liters
Recommended Operating Limits for Feed Water TFC Membrane
Water Pressure 40 - 100 psig (280 - 690 kPa)
TDS 2000 ppm (also mg/l) max.
Temperature 40 - 100˚F (4 - 38˚C)
pH 3 - 11
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**
Because the performance of an RO Membrane is highly dependant upon pressure, temperature and TDS, the following should be used
for comparison purposes only.
1 Industry standards measure R.O. Membranes performance with no backpressure on the product water, at 60 psig (414kPa) and 77°F (25°C). Further conditions on the
above are 250 ppm TDS and a 15% recovery rate. 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.
2 Measured at 50 psig, 77°±2° F, 717 mg/l TDS per NSF/ANSI Standard 58.
NOTE: Chlorine will damage a TFC Membrane. The Sediment/Carbon Prefilter will remove chlorine from the incoming water. Change filter every 6 months, more often if 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

pr e p a r a T I o n
6
Major System Components
Tools Recommended for Installation
Site Selection for Major System Components
The following components comprise the RO Drinking Water System. (Refer to Fig. 1, page 5 for general system layout.)
1. An R.O. Manifold assembly.
2. Housings and Housing O–rings.
3. A Drinking Water Holding Tank.
4. A Dispensing Faucet.
5. A Feed Water Saddle Valve.
6. A Drain Clamp.
7. Plastic Tubing and tube connectors.
8. A Reverse Osmosis Membrane sealed in a plastic bag.
9. A Sediment/Carbon Prefilter, shrink wrapped.
10. An Activated Carbon Post Filter, shrink wrapped.
11. An In–Line Activated Carbon Post Filter, shrink wrapped.
12. R.O. System Cover with or without optional Water Quality Monitor.*
13. Nitrate/Nitrite Test Kit.
14. Water Quality Test Kit for systems without the Water Quality Monitor.
15. 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.
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.
The RO 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
In s T a l l a T I o n sT e p s
A. Faucet Installation
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.
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.
The faucet contains an anti–siphon air gap. While the system is producing water, the drain water flows from the RO,
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 RO Drinking Water System.
NOTE: For proper installation the Air Gap Faucet has a critical level line “CL” marked on its body and should be
mounted so that the “CL” line is at least one (1) inch (26mm) above the flood level rim of the sink. 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. Choose a convenient location as described on page 6.
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chipping.
• 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
Long Reach Air Gap Faucet With 3/8” Connector
3. Assemble and attach the Faucet (refer to Fig. 2 right).
• AssembletheBodyandSpoutbyremovingtheplasticshippingplug
from the Body and then firmly pressing in the Spout.
• Inthefollowingorder,placetheFacePlate(Escutcheon)onthe7/16”
stud.
• Fromthetopofthecounterplacethestudthroughthemountinghole.
• Fromthebottomofthecountertop,inthefollowingorder,assemble
the Slotted Washer, the Plastic Spacer (with open end upwards), the 7/16”
Washer and the 7/16” Hex Nut.
• Totheendofthe7/16”studscrewonthe3/8”PolytubeQuick
Connect Fitting. Once snug by hand take a pair of pliers and tighten the
fitting an additional half turn. Don’t over tighten.
• RotatetheSpoutandBodyintoposition.AligntheSlottedWasherand
the Spacer to allow access to the Hose Barbs, and tighten the Hex Nut while
holding the faucet in alignment with a padded Crescent wrench.
Do not over tighten.
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 below.)
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clockwise(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.
B. Feed Water Saddle Valve Installation

9
3/8” Drain Clamp Assembly
Choose the drain outlet location per, page 7.
The following are instructions for discharging into the sink drain pipe. (Refer to Fig. 1, page 5.)
1. Position the Drain Clamp on the sink drain pipe above the drain trap. Allow room for drilling. Tighten securely.
2. Use a battery pow ered 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 which is shipped loose in the box.
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. Firmly press one end of the tubing
over the 3/8” drain outlet hose barb on the Dispensing Faucet. Allow the tubing to relax, then press firmly again to
insure proper seating. No connectors are required when attaching hose to Hose Barbs. Route the tubing to the Drain
Clamp and trim to length.
• RefertoFig.4,below.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.
C. Drain Clamp Installation

10
D. RO Manifold Assembly Instructions
Locate the site per page 6. 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 (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, page 5.)
Refer to Fig. 3, page 8. 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 yellow
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, page 5.) 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 wrap ping 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.
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, page 5.)
3. Wrap the white teflon tape, included in the box, 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 5.) 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.

11
F. Start Up
A. Normal Operation
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, page12).
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 RO Membrane.
• Useagoodqualityunscented5¼%liquidchlorinehouseholdbleach.
• OpentheDispensingFaucetbyliftingtheblackhandle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 Prefi lter. 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 RO Membrane:
• RemovetheRO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.(RefertoFigure
2, page 8.) The RO System is now making water.
• DonotopentheFaucetforatleast8hours.
• Donotusethefirstthreefulltanksofwater.
CAUTION: The RO Membrane is shipped with a preservative in it. To ensure proper rinsing of the RO 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.
op e r a T I o n & ma I n T e n a n C e
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 per for mance. Water pressure affects the production rate and quality.

12
2. R.O. systems produce drinking water at relatively slow rates; it can take up to 6 hours or more to fi ll 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 tap for at least 10 seconds prior to using
water. This is especially important if the water tap 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 wa ter 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 postfilters.
THIS RO 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 RO
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 RO Membrane is to be replaced, see page 11, 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 5 for component location.
1. Close the Feed Water Saddle Valve by turning fully clockwise and open the Dispensing Faucet by lifting the
handle. 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Tee(seeFig.1,page5).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 page 13.
• 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.
B. Changing Filters

13
C. Changing the In–Line Activated Carbon Post Filter
A. Water Quality
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. Firmly reconnect the polytubes to the new Post Filter.
(Refer to Fig. 5 above.)
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.
Water quality is normally measured with a special meter that measures the water’s ability to conduct electricity. The
more dissolved solids in the water, the higher the conductivity. The results are usually reported in Parts per Million
(ppm) or Milligrams per Liter (mg/l) of Total Dissolved Solids (TDS). (Although technically they are not exactly equal,
in most discussions ppm = mg/l.)
R.O. Membranes are rated by the amount of dissolved solids that are rejected. This rating is a ratio of the TDS in the
feed water to the TDS in the product water and is reported as Percent Rejection. If the feed water contained 100 ppm
of TDS and the product water contained 10 ppm of TDS, 90 ppm have been rejected and the reject
ratio is 90%.
Percent Rejection =
Feed TDS–Product TDS x 100%
Feed TDS
EXAMPLE: Feed water is 500 ppm TDS and the
product water is 75 ppm TDS.
Percent Rejection = 500 – 75 x 100%
500
Percent Rejection = 0.85 x 100% or 85%
Water quantity is termed Flux or Product Water Rate and is measured as the amount of water produced in one day. It
is reported as Gallons per Day (gpd) or Liters per Day (lpd). The flow of water to drain is the Reject Water Rate and
is measured as Gallons per Day (gpd) or as Milliliters per Minute (ml/min). Milliliters per minute x 0.38 = gallons per
day
EXAMPLE: The drain flow will fill a graduated cylinder to the 150 ml mark in one minute.
150 ml/min. x 0.38 = 57 gpd
If the container available measures ounces, use the following conversion:
Ounces per minute x 11.2 = gallons per day
EXAMPLE: The product flow will fill 2½ ounces in two minutes.
In-Line Activated Carbon Post Filter Assembly
Te C h n I C a l da T a
B. Water Quantity

14
2.5 oz. ÷ 2 min. = 1.25 oz./min.
1.25 oz./min. x 11.2 = 14 gpd
The Reject Ratio is the amount of water produced compared to the amount of water flowing to drain.
Reject Ratio = Reject Rate
Product Rate
EXAMPLE: The product rate is 14 gpd and the reject rate is 56 gpd.
Reject Ratio = 56 ÷ 14
Reject Ratio = 4 or 4 - to - 1
The Percent Recovery is another way to measure the amount of water produced as compared to the amount actually
used.
% Recovery = Product Rate x 100%
Feed Rate
NOTE: The total flow or feed water rate into the system is the sum of the product flow and the drain flow.
EXAMPLE: The product water rate is 14 gpd and the drain water rate is 56 gpd.
Feed Rate = 14 gpd + 56 gpd = 70 gpd
% Recovery = 14 gpd x 100%
70 gpd
% Recovery = 0.20 x 100% or 20%
Most R.O. Membranes are rated at a standardized condition of 77°F (25°C) and 65 psig (450kPa) discharging to
atmospheric pressure.
Product water quality and quantity greatly depend upon the Net Pressure Differential ( p) across the R.O. Membrane.
This pressure differential is a summation of the feed water pressure at the Membrane, which tries to push the water
through, the pressure in the Holding Tank, which tries to push the water backwards and the osmotic pressure, which
also tries to push the water backwards.
The Osmotic Pressure is in proportion to the dissolved minerals in the water and can be approximated by 1 psig for
each 100 ppm of TDS
EXAMPLE: A feed water with 1500 ppm of TDS would exert a backward pressure of about 15 psig on the membrane.
Net Pressure Differential =
Feed Water Pressure – Holding Tank Pressure – Osmotic Pressure
The higher the net pressure differential, the higher the quantity and quality of water produced. Some loss of production
is normal when using a pressurized Holding Tank.
C. Net Pressure Differential

15
D. Water Production Rate Chart
fe e d Wa T e r
es T I m a T e d Wa T e r pr o d u C T I o n ra T e
In ga l l o n s pe r da y (g p d ) a n d lI T r e s pe r da y (l p d ) f o r lI n e pr e s s u r e o f :
Temp TDS* 40 psig
(280 kPa) 50 psig (340 kPa) 60 psig (410 kPa) 70 psig (480 kPa) 80 psig (550 kPa) 90 psig (620 kPa) 100 psig (690 kPa)
˚F ˚C mg/l gpd lpd gpd lpd gpd lpd gpd lpd gpd lpd gpd lpd gpd lpd
40 4 50 4.6 17.4 6.1 23.1 7.5 28.4 8.9 33.7 10.3 39.0 11.8 44.7 13.2 50.0
500 4.0 15.1 5.4 20.4 6.8 25.7 8.3 31.4 9.7 36.7 11.1 42.0 12.5 47.3
1000 3.3 12.5 4.7 17.8 6.1 23.1 7.6 28.8 9.0 34.1 10.4 39.4 11.8 44.7
1500 2.6 9.8 4.0 15.1 5.4 20.4 6.8 25.7 8.3 31.4 9.7 36.7 11.1 42.0
50 10 50 7.0 26.5 9.2 34.8 11.4 43.1 13.5 51.1 15.9 30.2 17.9 67.8 20.0 75.7
500 6.1 23.1 8.2 31.0 10.4 39.4 12.6 47.7 14.7 55.6 16.9 64.0 19.1 72.3
1000 5.0 18.9 7.2 27.3 9.3 35.2 11.5 43.5 13.7 51.9 15.8 59.8 18.0 68.1
1500 3.9 14.8 6.1 23.1 8.2 31.0 10.4 39.4 12.6 47.7 14.7 55.6 16.9 64.0
60 16 50 9.4 35.6 12.4 46.9 15.3 57.9 18.2 68.9 21.1 79.9 24.0 90.8 26.9 101.8
500 8.1 30.7 11.0 41.6 14.0 53.0 16.9 64.0 19.8 75.0 22.7 85.9 25.6 96.9
1000 6.7 25.4 9.6 36.3 12.5 47.3 15.4 58.3 18.3 69.3 21.2 80.3 24.1 91.2
1500 5.2 19.7 8.1 30.7 11.0 41.6 14.0 52.6 16.9 64.0 19.8 75.0 22.7 85.9
70 21 50 11.9 45.0 15.5 58.7 19.2 72.7 22.8 86.3 26.4 99.9 30.1 113.9 33.7 127.6
500 10.2 38.6 13.9 52.6 17.5 66.2 21.2 80.2 24.8 93.9 28.5 107.9 32.1 121.5
1000 8.4 31.8 12.0 45.4 15.7 59.4 19.3 73.1 23.0 87.1 26.6 100.7 30.3 114.7
1500 6.6 25.0 10.2 38.6 13.9 52.6 17.5 66.2 21.2 80.2 24.8 93.9 28.5 107.9
80 27 50 14.3 54.1 18.7 70.8 23.0 87.1 27.4 103.7 31.8 120.4 36.2 137.0 40.6 153.7
500 12.3 46.6 16.7 63.2 21.1 79.9 25.5 96.5 29.8 112.8 34.2 129.4 38.6 146.1
1000 10.1 38.2 14.5 54.9 18.9 71.5 23.3 88.2 27.7 104.8 32.0 121.1 36.4 137.8
1500 7.9 29.9 12.3 46.6 16.7 63.2 21.1 79.9 25.5 96.5 29.8 112.8 34.2 129.4
90 32 50 16.7 63.2 21.8 82.5 26.9 101.8 32.1 121.5 37.2 140.8 42.3 160.1 47.4 151.4
500 14.4 45.5 19.5 73.8 24.6 93.1 29.8 112.8 34.9 132.1 40.0 151.4 45.1 161.2
1000 11.8 44.7 16.9 64.0 22.1 83.6 27.2 103.0 32.3 122.3 37.4 141.6 42.6 170.7
1500 9.2 34.8 14.4 54.5 19.5 73.8 24.6 93.1 29.8 112.8 34.9 132.1 40.0 179.4
*Total Dissolved Solids (TDS) measured in Parts Per Million (ppm)/Milligrams Per Liter (mg/l).
Please Note: This chart is based upon a start–up of a system when the storage tank is empty, (7 psig/48 kPa precharge). As the tank
fills, and backpressure from the tank increases, the GPD rating will decrease.
IMPORTANT! If the water production rate is within the highlighted area (marked with dotted lines), change the drain
restrictor to a 100 gpd (380 lpd) drain restrictor, color-coded black.

16
Tr o u b l e s h o o T I n g gu I d e
Problem Possible Cause Solution
Low Quantity of
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
RO 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 flow, the Drain Restrictor is
plugged. Clear or replace Drain Restrictor
No drain flow. The drain orifice in the
Air Gap Faucet is plugged Clear or replace Air Gap 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 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 or
Activated Carbon Post Filter Replace Filters
Low water pressure Feed Water Pressure must be above 40
psig
Check Feed Water Saddle Valve
RO Membrane O-ring is crimped Check O-ring
RO Membrane Brine Seal is not sealing
up into the Manifold Head Check the Brine Seal
RO Membrane is expended If Membrane life is unusually short, find
and correct the problem
Replace Membrane

Tr o u b l e s h o o T I n g gu I d e Co n ’T
17
Problem Possible Cause Solution
High Total Dissolved
Solids (TDS) in the
Poduct 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 Air Gap Faucet is plugged. Clear or replace Air Gap 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 Hold ing
Tank. Clean, fl ush and sanitize the system. Replace the fi 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 exhaused. Replace fi lters and/or membrane.
Drain Water overflows
at the Air Gap 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 spout. Adjust Faucet by turning the tee bar
just below the handle to provide a
small amount of free play in handle
when shut off.
O–rings are bad, repair or replace
faucet.
Leaks from base of the delivery
tube. O–ring is bad, replace O–ring.
Leaks from beneath the handle. O–rings are bad. Repair or replace
the faucet.
Fitting leaks in general Close the Feed Water Saddle Valve and relieve pressure before dis con nect ing
any tubing or re plac ing any fi tting. Before replacing a fi tting, re–cut the tubing
and re–insert into the fi tting to see if that solves the leak. If pipe threads are
leaking, remove and retape with Tefl on tape.

18
ex p l o d e d VI e W a n d pa r T s lI s T

19
ex p l o d e d VI e W a n d pa r T s lI s T Co n ’T
dr a W I n g no. pa r T no. desCrIpTIon
1. GS2009 Self Tapping Screw
2. GS2005 ASO Cap
3. GS2013 ASO Cap O–Ring
4. GS2011 ASO Diaphragm – Large
5. GS2007 ASO Piston
6. GS2006 ASO Piston Ring
7. GS2010 ASO Diaphragm – Small
8. GS2128–M Manifold Plate
9. GS1276 Check Valve
10. GS1277 Check Valve Retainer
11. GS7028 Sediment/Carbon Prefi lter
12. GS1227RS T.F.C. R.O. Membrane 25 gpd (95 lpd)
13. GS3069 Housing O–Ring
14. GS7029–09 Housing
15A. GPK–A4TPL 1/4" Plug
16. GS2116–6 Drain Restrictor 60 GPD (227 lpd) Yellow
17. GS2119–01NN Cover
18. GS7025 Activated Carbon Post Filter
19A. GS1580 Water Quality Test Kit
20. GS3072 Wrench for Housing
21. GS1405 1/4"–3/8" Fitting Wrench
22. GS7206W-JG In–Line Activated Carbon Post Filter
23. GS1447 Nitrate/Nitrite Test Kit
dr a W I n g no. pa r T no. desCrIpTIon
1. GS1089–08 Long Reach Air Gap Faucet w/ 3/8” Connector
2. GS1117–01 3/8” Drain Clamp Assembly
6. GJG–PI301208S 3/8” x 3/8” x 1/4” Union Tee
7. GS1118–01 Feed Water Saddle Valve
8. GC2233–03 RO Mate 4E Plastic Holding Tank
8A. GC2000 Steel Holding Tank
9. GS1037 Holding Tank Shut–Off Valve
Other Components Shown in Figure 1, Page 5

ro dr I n k I n g Wa T e r sy s T e m fI V e /on e ye a r lImITed Wa r r a n T y
What Does This Warranty Cover?
This warranty covers any defects in materials and workmanship of the Greenway®RO Drinking Water System
when installed and operated within recommended parameters, with the exceptions stated below.
How Long Does The Coverage Last?
Greenway®will warrant its RO 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 RO 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 Greenway®Do?
Greenway®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 Greenway®RO 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 Greenway®replacement parts since improper parts or incorrectly
performed maintenance or repair voids this warranty. In addition, if non Greenway®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 Provincial Law Apply?
This warranty gives you specific legal rights and you may also have other rights which vary from province to province.
Water Technologies
Water Technologies
Water Technolo
g
ies
Engineered for Health - Designed for Life
USA: 1270 Flagship Dr. Perrysburg, OH, 43551
Phone: [phone] Fax: [phone]
Canada: 400 Southgate Dr Guelph, ON, N1G 4P5
Phone:1-888-5-WATER-0 Fax: [phone]
www.greenwaywt.com