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Excalibur Water Systems EWR 5075 Service manual
REVERSE OSMOSIS DRINKING WATER SYSTEMS
Model: EWR 5075
INSTALLATION, OPERATION &
SERVICE MANUAL
Barrie, Ontario Canada
www.excaliburwater.com
TABLE OF CONTENTS
Page
INTRODUCTION TO THE REVERSE OSMOSIS DRINKING
WATER SYSTEM
.
1
PREPARATION
A. Major System Components for the Reverse Osmosis Drinking
Water System
Installation Drawings for the Reverse Osmosis Drinking
Water Systems
B. Tools Recommended for Reverse Osmosis Drinking
Water Installation
C. Site Selection For Reverse Osmosis Major System Components
2
3
4
4
REVERSE OSMOSIS INSTALLATION STEPS
A. Reverse Osmosis Faucet Installation
Reverse Osmosis Faucet Drawing
B. Reverse Osmosis Feed Water Ball Valve Installation
C. Reverse Osmosis Drain Clamp Installation
D. Position the Reverse Osmosis Drinking Water Holding Tank
and Make the Final Hose Connections
E. Reverse Osmosis Start Up
5
6
7
8
8
8
REVERSE OSMOSIS OPERATION AND MAINTENANCE
A. Reverse Osmosis Normal Operation
B. Reverse Osmosis Changing Filters
C. Reverse Osmosis Changing the In-Line Activated Carbon
Post Filter
9
10
10
TECHNICAL DATA
A. Reverse Osmosis Water Quality
REVERSE OSMOSIS TROUBLESHOOTING GUIDE
10
11/12
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 importance of drinking water compared to other possible sources of Cryptosporidium to
determine how most people become infected. The CDC-EPA guidance suggest that immunosuppressed individuals discuss their risks with
their health care provider.
All individuals should take adequate precaution 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.
INTRODUCTION
Your new Reverse Osmosis Drinking Water
System uses a combination of filtration
technologies to reduce unwanted contaminants in
your water supply. Your Reverse Osmosis System
uses the following steps combine to give you the
best in clear sparkling Reverse Osmosis water:
The Reverse Osmosis 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 Reverse
Osmosis Membrane provides maximum surface
area for water production and is less susceptible
to fouling by particulate matter, turbidity and
colloidal materials.
REVERSE OSMOSIS MECHANICAL
FILTRATION - The Reverse Osmosis Turbidity
Pre-filter will remove suspended matter that are
larger than 5 micron as well as silt, dirt, scale
and rust. The 5 Micron nominal rating helps
give maximum life to the Reverse Osmosis
Membranes.
REVERSE OSMOSIS IN-LINE ACTIVATED
CARBON COCONUT SHELL POST FILTER –
The Reverse Osmosis In-Line Activated Carbon
Post Filter is located after the Holding Tank and
reduces tastes and odours that may pass through
the Reverse Osmosis system. It adds a final
polish to the water.
REVERSE OSMOSIS CARBON BLOCKS –
The Reverse Osmosis Carbon Block Pre-filters
contains carbon with a vast network of pores.
The tremendous surface area of these pores
(typically 800-1200 square meters per gram of
carbon) gives the Reverse Osmosis carbon very
good adsorption sites for substances that
contribute to tastes and odours. The Reverse
Osmosis carbon block in the Pre-filters will
remove chlorine that may be present in the feed
water. This Reverse Osmosis pretreatment is
necessary for membrane protection.
REVERSE OSMOSIS AUTOMATIC SHUTOFF
VALVE – The Reverse Osmosis ASO Valve
senses when the product water tank is full and
closes the feed water supply to prevent excess
Reverse Osmosis reject water from going to drain
when the Reverse Osmosis System is not
producing water. Premium models with booster
pump utilize solenoid valves as the ASO auto
shut off.
REVERSE OSMOSIS FAUCET –
The reverse osmosis faucet is a designer
brushed nickel high flow 3/8” design
goose neck with ceramic disc valve.
REVERSE OSMOSIS MEMBRANE – The
Reverse Osmosis Membrane is the heart of the
Reverse Osmosis filtration system. The Reverse
Osmosis system 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
(the Permeate). The Reverse Osmosis excess
minerals are rinsed to drain (the Reject Water).
REVERSE OSMOSIS HOLDING TANK –
The reverse osmosis faucet holding tank
is 3.2 gallon plastic designed for the
storage and repressurization of reverse
osmosis pure drinking water with valve.
1
REVERSE OSMOSIS PREPARATION
A. Reverse Osmosis Components
The following components comprise the Reverse
Osmosis Drinking Water System. (Refer to Fig. 1,
below for general system layout.)
9. Reverse Osmosis Sediment Pre-filter,
shrink wrapped.
10.Reverse Osmosis activated Carbon Prefilter, shrink wrapped.
11.Reverse Osmosis In-Line Activated
Coconut Shell Carbon Post Filter.
12.Other items necessary for Reverse
Osmosis installation may include wood
screws or machine screws and nuts for
mounting the manifold, or concrete
anchors for hanging on basement wall.
Additional Reverse Osmosis tubing or
tube connectors. Reverse Osmosis
Plastic wire ties for organizing tubing.
1. Reverse Osmosis Manifold assembly
2. Filter Housings with O-Rings
3. Water Storage Holding Tank
4. Designer Water Dispensing Faucet
5. Self Piercing Feed Water Saddle Valve
6. Reverse Osmosis Drain Clamp.
7. Installation tubing and connections
13. Reverse Osmosis Installation Kit
8. Membrane in sealed bag
BALL
2
BALL
3
B. Tools Recommended for Reverse Osmosis
Installation
C. Site Selection for Major System Reverse
Osmosis Components
The following tools will cover most of the
Reverse Osmosis installation sites
encountered:
The Reverse Osmosis System was designed to fit
under a sink, however, because of space limitations
or other reasons, the Reverse Osmosis system's
flexible design allows for other locations. When
determining the location of your Reverse Osmosis
system remember that access to a cold water tap
line, the household drain, and ease of Reverse
Osmosis filter replacement are important
considerations.
1. 3/8" variable speed electric drill.
2. Extension work light with outlet.
3. Safety glasses.
4. 5/8" Drill Bit and 1/8" and ½"metal drill bits
for pilot hole.
All Reverse Osmosis components and tubing
should be located in an area not exposed to
freezing temperatures. If winter temperatures are
sever, the area should be above the minimum
temperature listed in Table B, page 2 for proper
performance. Do not expose Reverse Osmosis
system or tubing to direct sunlight.
1. Reverse Osmosis Drinking Faucet – The
Reverse Osmosis 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 Reverse Osmosis faucet under the
sink for attaching product and Reverse Osmosis
drain tubing are considerations. A 2" diameter
flat surface is required above and below the
Reverse Osmosis installation site.
6. Center punch and hammer.
7. Wood bits.
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.
2. Reverse Osmosis Holding Tank – The
Reverse Osmosis Holding Tank may be placed
where it is convenient within 10 feet of the
Reverse Osmosis faucet; under the sink, in an
adjacent cabinet are the best choices or in a
basement within 20 feet of the Reverse Osmosis
faucet. If a longer run of Reverse Osmosis
tubing is required, a transfer delivery pump may
be required extra to boost line pressure.
17. Extra plastic tubing.
18. Low range air pressure gauge.
19. Small bottle of liquid chlorine bleach.
20. Paper towels, wisk broom and assorted
clean up materials.
3. Reverse Osmosis Manifold Assembly – The
Reverse Osmosis 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 Reverse Osmosis tubing will be
to the back of the cabinet and out of the way.
Reverse Osmosis Installation in the basement is
also an option; one location is near the
laundry/utility sink where cold potable water and
rain access are handy. The mounting location
should allow adequate clearance and
accessibility for Reverse Osmosis cartridge
changes.
4
4. Reverse Osmosis Feed Water
Connection – The Reverse Osmosis Feed
Water Saddle Valve should be located as
close to the manifold assembly as
possible. USE A POTABLE COLD WATER
SUPPLY ONLY TO YOUR REVERSE
OSMOSIS SYSTEM. Softened water is
preferred as it will extend the life of the
Reverse Osmosis Membrane.
2b. Drilling a porcelain sink:
It is best to use a special 5/8" 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 5/8" hole, drill slowly and
carefully; the porcelain chips easily.
 After drilling, clean the area well. Iron fillings,
if left in place, can cause rust stains.
5. Reverse Osmosis Drain Connection –
The Reverse Osmosis waste water must
go to a drain connection with easy access.
Do NOT connect the Reverse Osmosis
system drain line to the dishwasher drain
or near the garbage disposal.
REVERSE OSMOSIS INSTALLATION
STEPS
All plumbing should be done in accordance
with local plumbing codes.
2c. Drilling a counter top:
NOTE: The counter top must be less than 2¼"
thick. Treat ceramic tiles as porcelain until the
tile is penetrated, then use the carbide tipped
metal cutter.
In restricted under-sink areas, it may be easier
to install the Reverse Osmosis faucet first.
Allow adequate Reverse Osmosis tubing
lengths for any final Reverse Osmosis
component position.
Formica counter tops may be drilled with a good
5/8" wood bit, drilling a 3/32" pilot hole will help
keep the bit going straight.
A. Reverse Osmosis Faucet Installation
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 5/8" diameter hole to accept
the faucet to go through the countertop.
 Clean away any chips.
 Deburr any sharp edges.
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 Reverse Osmosis product water to verify the Reverse
Osmosis system is performing satisfactorily.
The Reverse Osmosis system is acceptable for water treatment of influent concentrations of no more that 27 mg/l nitrate and 3 mg/l nitrate
in combination measured as N and is certified for nitrate/nitrite reduction only for water supplies with a pressure of 40 psig (280 kPa) or
greater.
DO NOT USE WITH WATER THAT IS MICROBIOLOGICALLY UNSAFE OR OF UNKNOWN QUALITY, WITHOUT ADEQUATE
DISINFECTION BEFORE OR AFTER THE SYSTEM. Reverse Osmosis Systems certified for cyst reduction may be used on disinfected
water that may contain filterable cysts.
5
B. Reverse Osmosis Feed Water Ball Valve
Installation
3. With the Reverse Osmosis Feed Water Ball
Valve closed, open the Reverse Osmosis
sink faucet and the water supply and allow
the water to run for a few minutes to flush
any debris caused by the installation.
Decide on location. Do NOT connect
Reverse Osmosis to a hot water feed line.
Water over 100ºF may cause permanent
damage to the Reverse Osmosis Membrane.
(Refer to Fig. 3 page 8.)
1. Shut off the water supply and drain the line
from the Reverse Osmosis system.
2. To install the Reverse Osmosis Feed Water
Ball Valve:

Attach the self piercing saddle valve to
pipe and secure and tighten.

Remove nut from the Reverse Osmosis
feed water ball valve.

Slide the nut onto the ¼” reverse
osmosis tubing.

Insert the ferrule and tube insert onto ¼”
tubing

Place the ¼” tubing onto the exposed
threads of the Reverse Osmosis feed self
piercing saddle valve.

Screw the nut onto the Reverse Osmosis
feed water ball valve.

Close the Reverse Osmosis faucet and
check the Reverse Osmosis Feed
Water Saddle Valve for leaks.

Once installation of Reverse Osmosis
System is completed open Revere
Osmosis feed saddle valve to allow
flow of water.
REVERSE OSMOSIS SELF PIERCING
¼” FEED WATER SADDLE VALVE
6
C. Reverse Osmosis Drain Clamp Installation
3. Locate the 3/8" Drain Tubing connected to
the Reverse Osmosis System. Route to the
Reverse Osmosis tubing to the Drain Clamp
and trim to length.
Choose the Reverse Osmosis drain outlet
location.
The following are instructions for discharging
in the sink drain pipe. (Refer to Fig. 1, page 3)
CAUTION: The lowest point of the line
should be the point of connection to the
Reverse Osmosis Drain Clamp. There
should be no sag in the Reverse Osmosis
tubing as this may cause excessive noise as
the reject water is flowing to drain.
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.
 Refer to Fig. 4, below. To connect the
Drain Tubing, install the Compression Nut
and the Brass Insert.
 Insert the tubing into the Drain Clamp and
tighten the Compression Nut.
Figure 4
7
 Slowly open the Reverse Osmosis Feed
Water Saddle Valve (turning counter
clockwise).
D. Position the Reverse Osmosis Holding
Tank & Make the Final Hose Connections
1. Check the Reverse Osmosis tank precharge pressure. Make sure it is between 5
to 7 psig.
 As soon as the water begins to come out of
the Reverse Osmosis Dispensing Faucet,
close the Faucet.
2. Pull the cap/plug off the top of the Reverse
Osmosis tank where the Reverse Osmosis
Tank Shut-Off should go. (Refer to Fig. 1,
page 2)
 Let stand for 15 minutes.
NOTE: During this time, check the Reverse
Osmosis system carefully for leaks.
 At the end of 15 minutes, CLOSE the
Reverse Osmosis Feed Water Ball Valve
and open the Reverse Osmosis Dispensing
Faucet.
3. Wrap Teflon tape three times around the
¼" male outlet thread. Wrap in the direction
of the threads. The tape will act as a thread
sealant. Screw on the Reverse Osmosis
Holding Tank Shut-Off Valve.
 Allow the Reverse Osmosis Holding Tank to
completely drain. Then remove the Reverse
Osmosis Activated Carbon Pre-filter
Housing, empty, and install the Reverse
Osmosis activated Carbon Pre-filter. Firmly
tighten the Reverse Osmosis Housing hand
tight only.
4. Locate the 3/8" Reverse Osmosis Tubing.
Firmly press one end into the Reverse
Osmosis Holding Tank Shut-Off Valve and
the other end into the tee. (Refer to Fig. 1,
page 2.) The fittings will grab the Reverse
Osmosis tubing and seal it in place. Make
sure the Reverse Osmosis tubing is
pressed all the way in to create a pressure
tight connection.
2. Installing the Reverse Osmosis
Membrane:
 Remove the Reverse Osmosis Membrane
Housing, (the closest of the three to In/Out
ports), and empty.
E. Reverse Osmosis Start Up
At time of start up and each time the Reverse
Osmosis filters are changed the Reverse
Osmosis system should be sanitized.
 Insert the Reverse Osmosis Membrane into
the Reverse Osmosis Membrane Housing.
(The O-rings should be up toward the
Reverse Osmosis Membrane Housing cap.)
Check the Reverse Osmosis Housing O-ring
for proper position in its groove, engage and
firmly tighten the Reverse Osmosis Housing
hand tight only.
1. Sanitizing the Reverse Osmosis system
and installing the Reverse Osmosis
Sediment Pre-filter. Use a drip pan to aid
clean-up.
NOTE: The Reverse Osmosis system should
be sanitized BEFORE installing the Reverse
Osmosis Activated Carbon Pre-filter and the
Reverse Osmosis Membrane.
3. Rinsing the Reverse Osmosis system:
 Slowly open the Reverse Osmosis Feed
Water Saddle Valve fully counter clockwise.
 Use a good quality unscented liquid
chlorine household bleach.
 Open the Reverse Osmosis Dispensing
Faucet by lifting the black handle and open
the Reverse Osmosis Holding Tank ShutOff Valve (the handle should be parallel
with the valve body).
 Remove the Reverse Osmosis Housing on
the side of the manifold labeled
"SEDIMENT". Pour one capful of bleach
(this is approximately 2 tsp. or 10 ml) into
one of the white Housings.. Engage and
firmly tighten the Reverse Osmosis
Housing hand tight only.
 Remove all Reverse Osmosis Housings
add one capful of bleach in each. Engage
and firmly tighten the Housings hand tight
only.
 The Reverse Osmosis Holding Tank Valve
should be open. The Reverse Osmosis
System is now making water.
 Do not use the first three full Reverse
Osmosis tanks of water.
CAUTION: The Reverse Osmosis
Membrane is shipped with a preservative in
it (0.5% sodium metabisulfite). This will be
rinsed out with the first water produced.
Allow the Holding Tank to fill (overnight) and
discard the first three full tanks of production.
When the Faucet is first opened, expect air
and carbon fines (very fine black powder)
from the In-Line Activated Carbon Post Filter
to be rinsed out. This is normal for the first
tank of water or after the In-line filter is
changed.
8
REVERSE OSMOSIS OPERATION &
MAINTENANCE
1. Close the Reverse Osmosis Feed Water Ball
Valve by turning fully clockwise and open the
Reverse Osmosis Dispensing Faucet by
lifting the handle. Allow the Reverse
Osmosis Holding Tank to empty.
A. Reverse Osmosis Normal Operation
1. Reverse Osmosis systems produce
drinking water at relatively slow rates.
Normal operation is to let the Reverse
Osmosis Holding Tank fill with water and
then draw water as is needed. When the
pressure in the Reverse Osmosis 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 Reverse Osmosis
system will refill the Reverse Osmosis
Holding Tank. When the Reverse Osmosis
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 Reverse
Osmosis system will function.
2. Loosen and remove the Reverse Osmosis
Sediment Pre-filter and the Activated Carbon
Pre-filter Housings. Wash the inside of the
Reverse Osmosis Housings using a mild
detergent and a soft cloth. Do not use
abrasive cleaners or pads. Thoroughly rinse
all soap from the Reverse Osmosis
Housings before reassembly.
3. To sanitize the Reverse Osmosis system
and replace the Reverse Osmosis filters:
NOTE: The Reverse Osmosis system should
be sanitized before installing the Reverse
Osmosis Activated Carbon Pre-filter.
 Use a good quality unscented liquid
chlorine household bleach.
 Add one capful Reverse Osmosis
Sediment Pre-filter Housing and install the
Reverse Osmosis Housing O-ring for
proper position in its groove, engage and
firmly tighten the Housing hand tight only.
After periods of non-use, such as a week
of vacation, it is better to empty the
Reverse Osmosis Holding Tank and allow
the Reverse Osmosis system to produce
fresh water for use. If the Reverse
Osmosis system is not used for 3-4 weeks
or longer, it is a good idea to re-sanitize the
Reverse Osmosis system and to change
the Reverse Osmosis pre-filter and post
filters.
 Add one capful of bleach to the
Reverse Osmosis Activated Carbon Prefilter Housing. Install the Reverse Osmosis
Housing without the Reverse Osmosis
Activated Carbon Pre-filter.
 The Reverse Osmosis Dispensing Faucet
should be open, slowly open the Reverse
Osmosis Feed Water Ball Valve.
B. Reverse Osmosis Changing Filters
THIS REVERSE OSMOSIS SYSTEM
CONTAINS REVERSE OSMOSIS FILTERS
WHICH MUST BE REPLACED AT
REGULAR INTERVALS TO MAINTAIN
PROPER PERFORMANCE. USE ONLY
FACTORY APPROVED FILTERS.
 As soon as the water begins to drip out of
the Dispensing Faucet, close the Faucet.
 Let the Reverse Osmosis system stand for
15 minutes.
The recommended interval for changing the
Reverse Osmosis filters (not the Reverse
Osmosis Membrane) is every six (6) months.
Typical T.F.C. Reverse Osmosis Membrane
life expectancy is Five to ten years with
Water Softener prior to Reverse Osmosis
system. Local conditions may dictate more
frequent changes.
 At the end of 15 minutes, in the following
order, close the Reverse Osmosis Feed
Water Ball Valve, close the Reverse
Osmosis Holding Tank Valve and open the
Dispensing Faucet to release the pressure.
 Remove the Reverse Osmosis Activated
Carbon Pre-filter Housing and empty.
Remove the wrapping and install the
Reverse Osmosis Activated Carbon Prefilter. Firmly tighten the Reverse Osmosis
Housing hand tight only.
 Disconnect the Reverse Osmosis tubing
that runs from the Reverse Osmosis
Holding Tank to the Tee (see Fig. 1, page
3). Put 50 drops of bleach (this is ½ tsp. or
9
3 ml) into the Reverse Osmosis tubing and
reconnect it to the Tee.
5. Slowly open the Reverse Osmosis Feed
Water Saddle Valve.
NOTE: Now is the convenient time to
change the In-Line Reverse Osmosis
Activated Carbon Post Filter.
6. When water begins dripping out of the
Reverse Osmosis Faucet, in the
following order, close the Reverse
Osmosis Faucet and open the Reverse
Osmosis Holding Tank Valve. When the
Reverse Osmosis Faucet is first
opened, expect air and carbon fines
(very fine black powder), from the new
Reverse Osmosis Post Filter to be
rinsed out. This is normal for the first
tank of water.
 Slowly open the Reverse Osmosis Feed
Water Saddle Valve. When water begins
dripping out of the Reverse Osmosis
Dispensing Faucet, in the following order,
close the Faucet and then open the Holding
Tank Valve.
 Do not open the Reverse Osmosis Faucet
for at least 5 hours.
 Discard the first three full tanks of water
produced, they will contain chlorine.
C. Changing the In-Line Reverse Osmosis
Activated Carbon Post Filter
REVERSE OSMOSIS TECHNICAL DATA
A. Reverse Osmosis Water Quality
1. Close the Reverse Osmosis Feed Water
Ball Saddle by turning fully clockwise.
Reverse Osmosis water quality is normally
measured with a TDS meter. 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).
2. Close the Reverse Osmosis Holding Tank
Valve and then open the Reverse Osmosis
Dispensing Faucet to release the pressure.
3. Remove the In-Line Reverse Osmosis
Activated Carbon Post Filter. Disconnect
the used Reverse Osmosis Post Filter by
pressing in the connector's collar and at the
same time pulling the tube out of the fitting.
Unscrew the fittings on the In-Line, reTeflon tape them and install them on the
new Reverse Osmosis Post Filter. Do not
over tighten the fittings.
Reverse Osmosis Membranes are rated by
the amount of dissolved solids that are
rejected. This rating is a ration 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 ration is 90%.
4. Firmly reconnect the polytubes to the new
Post Filter. (Refer to Fig. 5 below.)
Percent Rejection =
IN-LINE REVERSE OSMOSIS
COCONUT SHELL CARBON POST
FILTER ASSEMBLY
Feed TDS – Product TDS
Feed TDS
EXAMPLE: Feed water is 500 ppm TDS
and the product water is 75 ppm TDS.
Percent Rejection = 500 – 75 x 100%
OUT
IN
500
From
tank
To Faucet
Percent Rejection = 0.85 x 100% or 85%
In-line Coconut Shell
Carbon Post Filter
Figure 5
10
REVERSE OSMOSIS TROUBLE SHOOTING GUIDE
Problem
Low quantity of Reverse
Osmosis Product Water from
Holding Tank
Possible Cause
Reverse Osmosis Feed Water Ball
Valve is plugged or closed.
Clogged Sediment Pre-filter or
Activated Carbon Pre-filter.
Low water pressure.
Reverse Osmosis. Membrane is
fouled.
Plugged In-Line Activated Carbon
Post Filter.
Air pre-charge pressure in Holding
Tank is too high.
Air pre-charge is too low
Low pressure at the Reverse
Osmosis Dispensing Faucet
Air Bladder in the Holding Tank is
ruptured.
Holding Tank Valve is closed.
No drain flow, the Drain Restrictor
is plugged.
The Check Valve is stuck.
The ASO Valve is malfunctioning.
In-Line Activated Carbon Post Filter
is plugged.
Air pre-charge in the Reverse
Osmosis Holding Tank is too low.
Reverse Osmosis Holding Tank
Valve is partially closed.
The dispensing Faucet is out of
adjustment or faulty.
Heavy water use, Reverse
Osmosis Holding Tank is depleted.
Low Water Production.
High Total Dissolved Solids
(TDS) in the Product Water
Clogged Sediment Pre-filter or
Activated Carbon Pre-filter.
Low Water Pressure.
Reverse Osmosis Membrane Oring is crimped.
Reverse Osmosis Membrane brine
seal is not sealing up into the
manifold head.
Reverse Osmosis Membrane is
expended.
11
Solution
Open Valve or unclog.
Replace Reverse Osmosis filters.
Reverse Osmosis Feed Water
pressure must be above 40 psig.
See Reverse Osmosis Feed Water
operating limits. Correct cause of
fouling, replace Membrane.
Replace Post Filter.
Empty water from Reverse
Osmosis Holding Tank, and with
the faucet open, adjust air pressure
to 5 – 7 psig (35–48 kPa) range.
Replace Reverse Osmosis tank.
Open Valve.
Clear or replace Drain Restrictor.
Free check.
Replace ASO Valve components.
Replace Post Filter.
Empty water from Reverse
Osmosis Holding Tank and with the
faucet open, adjust air pressure to
5 – 7 psig (35-48 kPa) range.
Check for leakage at the Reverse
Osmosis Air Valve Stem.
Open Valve
Repair or replace Reverse Osmosis
Dispensing Faucet.
Allow Reverse Osmosis Holding
Tank to refill (adding a second
Holding Tank will increase storage
capacity).
See Low Quantity of Product Water
from Holding Tank section above.
Replace Reverse Osmosis Filters.
Reverse Osmosis Feed Water
Pressure must be above 40 psig.
Check Feed Water Ball Valve.
Check O-ring.
Check the brine seal.
If Reverse Osmosis Membrane life
is unusually short, find and correct
the problem. Replace Membrane.
Problem
High Total Dissolved Solids
(TDS) in the Product Water
(continued)
Possible Cause
The Product Water and Drain
Water lines are reversed.
No drain flow, Reverse Osmosis
Drain Restrictor is clogged.
The Reverse Osmosis ASO Valve
is not closing.
New In-Line or Activated Carbon
Pre-filter not rinsed completely.
The Reverse Osmosis Feed Water
TDS has increased.
Tastes and odors in the Reverse
Osmosis Product Water
The In-Line or Activated Carbon
Pre-filter is exhausted.
There is foreign matter in the
Reverse Osmosis Holding Tank.
The Product Water and Reverse
Osmosis Drain Water lines are
reversed.
Dissolved gassed in the Reverse
Osmosis Feed Water.
Increase in Product Water TDS.
Reverse Osmosis Drain Water
overflows at the Air Gap Faucet
Drain tubing is clogged.
Drain clamp hole is misaligned.
Excessive drain flow rate.
Reverse Osmosis Faucet leaks
or drips
Leaks from spout.
Leaks from base of the delivery
tube.
Leaks from beneath the handle.
Reverse Osmosis Fitting leaks in
general
Solution
Correct plumbing.
Clear or replace Reverse Osmosis
Drain Restrictor.
Repair or replace the Reverse
Osmosis ASO Valve Components.
Flush with several full tanks of
Product Water.
An increase in Reverse Osmosis
Feed Water TDS will give a
corresponding increase in Product
Water TDS.
Replace Reverse Osmosis Filters.
Clean, flush and sanitize the
system. Replace the filters.
Correct plumbing.
Pre-treat Reverse Osmosis Feed
Water to remove dissolved gasses.
See high TDS in the Reverse
Osmosis Product Water section.
Clear tubing.
Align with hole in the drain pipe.
Replace Reverse Osmosis Drain
Restrictor.
Adjust Reverse Osmosis 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.
O-ring is bad, replace O-ring.
O-rings are bad. Repair or replace
the faucet.
Close the Reverse Osmosis Feed Water Ball 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 re-tape with Teflon tape.
12
5 YEAR WARRANTY
REVERSE OSMOSIS SYSTEM
Thank you for your purchase of our Reverse Osmosis System. For proof of purchase, please retain your Invoice/Sales
Order Copy.
Warranty ~ Offered
Excalibur Water Systems warranties its products to be free from defect in materials and workmanship to the original owner
from the date on the proof of purchase as described below.
Warranty ~ Working Procedures
If during the suitable warranty period, a part is defective, then Excalibur Water Systems will repair or replace that part at no
charge to the original owner, with the exception of charges for nominal shipping, service and/or installation.
Warranty ~ Coverage Outlined
Excalibur Water Systems guarantees, to the original owner, a period of 5 years, the BODY to be free of defects in materials
and workmanship and to perform its proper functions. To the original owner, a period of 5 years, the membrane as well as
all parts to be free of defects in materials and workmanship and to perform their normal functions to the original owner as
long as it is maintained with proper service and maintenance. Cartridges must be changed every 6 months . Reverse
Osmosis pump models, the booster pump has a warranty of 1 year.
Warranty ~ Service
In the event you require service, your local Excalibur Water Systems Dealer will provide all necessary service and
installation for your RO Disinfection System. To obtain warranty service within 30 days of discovery of the defect,
notification must be given to your local Excalibur Water Systems Dealer.
General Provisions
The above warranties are effective provided the Reverse Osmosis System is operated at water pressures not exceeding
125psi and at water temperatures not exceeding 120°F; also provided that the RO system is not subject to abuse, misuse,
alteration, neglect, freezing, accident or negligence; and provided further that the RO system is not damaged as the result of
any unusual force of nature such as, but not limited to flood, hurricane, tornado or earthquake. Excalibur Water Systems is
excused if failure to perform its warranty obligations is the result of strikes, government regulation, materials shortages or
other circumstances beyond its control.
THERE ARE NO WARRANTIES ON THE RO SYSTEM BEYOND THOSE SPECIFICALLY DESCRIBED ABOVE. ALL
IMPLIED WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR OF FITNESS FOR A
PARTICULAR PURPOSE, ARE DISCLAIMED TO THE EXTENT THEY MIGHT EXTEND BEYOND THE ABOVE
PERIODS. THE SOLE OBLIGATION OF EXCALIBUR WATER SYSTEMS UNDER THESE WARRANTIES IS TO
REPLACE OR REPAIR THE COMPONENT OR PART PROVES TO BE DFEFECTIVE WITHIN THE SPECIFIED TIME
PERIOD AND EXCALIBUR WATER SYSTEMS IS NOT LIABLE FOR CONSEQUENTIAL OR INDIDENTAL DAMAGES.
NO DEALER, AGENT, REPRESENTATIVE OR OTHER PERSON IS AUTHORIZED TO EXTEND OR EXPAND THE
WARRANTIES EXPRESSED ABOVE.
Certain provinces or states do not allow limitations on how long an implied warranty lasts or exclusions or limitations of
incidental or consequential damage, therefore limitations and exclusions in this warranty may not apply to you. This
warranty extends you specific legal rights as you may have other rights which vary from province to province or state to
state.
Excalibur Water Systems is a manufacturer of water treatment products.
Barrie, ON
Canada
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