Express Water 300GPD User manual

Light Commercial
Reverse Osmosis
System
Installation Manual

2
Overall System Connections
Hello!
You’ve taken the rst step to having healthier and better from now on thanks to Express Water’s Light Commercial
Reverse Osmosis Water Filtration System. Your new ltration system protects you and any appliances from
contaminants with hundreds of gallons of perfectly pure water every day.
If at any point in the installation process you have questions just give us a call from 10am-5pm (Pacic Time) at
1-800-992-8876 Monday - Friday
Reverse Osmosis

3
READ THIS FIRST
Please pay attention to the following in󰍰allation and safety recommendations:
Read the in󰎤allation manual before in󰎤alling this sy󰎤em.
NOTE! Please make sure your in󰍰allation location has enough room and access to a 110v power supply.
Incoming Water
Incoming water pressure mu󰍰 be between 10 PSI and 100 PSI. Te󰍰 your water occasionally to make sure the sy󰍰em is
performing. If your water is microbiologically unsafe or of unknown quality do not use this sy󰍰em without adequate
disinfection before or after the sy󰍰em. Extremely hot or cold incoming water will damage the sy󰍰em and cannot be
used. Your Untreated Water Inow quality will determine your needs for pretreatment and ltration.
Leaks
Inspect all connections after the in󰍰allation to make sure no leaks occur, wait until after the sy󰍰em is pressurized to
inspect again. Check the sy󰍰em occasionally after in󰍰allation or maintenance to make sure no leaks have developed.
In󰍰all the sy󰍰em in a location with adequate drainage.
General
This Light Commercial RO Sy󰍰em is for climate controlled indoor use only. Exposure to overly high or low
temperature ranges will damage the unit. Follow all of your 󰍰ate and local laws and codes regarding plumbing even
if they dier from what is 󰍰ated in this manual. If your 󰍰ate law requires it or you prefer to we recommend using
a professional licensed in󰍰aller or plumber who meets the requirements of this sy󰍰em. All O-Rings, ttings, lter
cani󰍰ers, and teon tape wears out after a certain period of time. The lifetime of your components are subject to
change with the quality of the water supplied. Do not handle an unwrapped lter directly with your bare hands as this
can cause early lter failure. Use appropriate eye protection when performing any drilling.
Maintenance
The owner/user is obligated to properly inspect and maintain the Commercial RO Sy󰍰em when necessary, at lea󰍰
every 1 year. This includes the following:
Replace the O-Rings on the lter housings, membrane housing, boo󰍰er pump, ttings, and lter cartridges.
Replace any connectors and lter housings with proper replacement parts.
Sanitize your sy󰍰em as often as needed (this changes with the prole of your area’s incoming water).
Always use proper replacement lter cartridges with the correct size and length replacements.
Replace the Teon Tape on all threaded connections and ttings.
Copyright © 2020 by Express Water Inc.
All rights reserved. No part of this publication may be reproduced, di󰍰ributed, or transmitted in any form or by any
means, including photocopying, recording, or other electronic or mechanical methods, without the prior written
permission of the publisher, except in the case of brief quotations embodied in critical reviews and certain other
noncommercial uses permitted by copyright law.
Conditions

4
Table of Contents
Introduction
In󰍰allation Notes
Components Li󰍰
Sy󰍰em Components
Sy󰍰em Guide
Tubing Quick Connect Guide
In󰎣allation
Feed Water Adapter Valve
Drain Saddle
Filter Housing Assembly
Water Storage Tank
Sy󰍰em Connections
Sy󰎣em Startup
Sy󰎣em Maintenance
Filter Change In󰍰ruction
How to Sanitize your RO Drinking Water Sy󰍰em
FAQ
Warranty
Page 5
Page 6
Page 6
Page 7
Page 8
Page 9
Page 10
Page 12
Page 13
Page 14
Page 15
Page 16
Page 16
Page 17
Page 18
Page 19
Page 21

5
Introduction
You have purchased the ne󰍰 residential Light Commercial Reverse Osmosis Water Filtration Sy󰍰em
available for your water purication. When properly maintained this sy󰍰em will provide you with years of
great ta󰍰ing pure drinking water and trouble-free service.
Please read the manual section regarding the proper care and maintenance of your new RO Sy󰍰em
before proceeding with your in󰍰allation. Also, please make sure to inspect the package for any missing
components or shipping damages.
Simply read through the manual and complete the 󰍰eps in order and you’ll have your sy󰍰em up and
running in no time. If you nd any issues or have que󰍰ions please contact Express Water from 10am to
5pm (Pacic Time) at: 1-800-992-8876 Monday - Friday
Visit ExpressWater.com for lter replacements.
Stage 1
5 Micron
Sediment Filter
Stages 2, 3 and 5
Activated Carbon
Block Filter
Stage 4
RO Membrane Booster Pump
Part
Model
Service Life
FLTWH1025C02FLTWH1025S
Custom Order
Please contact us
for these items
300GPD Membrane
Replacements Table
6 Months6 Months 6 Months - 1 Year

6
• Box Cutter / Tube Cutter
• Phillips-Head Screwdriver
• Power Drill
• 3/8” Drill Bit (for Drain Saddle)
• Adjuable Wrench
• Teon Tape
19ft of 3/8” Tubing
Feed Water Adapter Valve
Filter Housing Wrench
Membrane Housing Wrench
Installation Notes
Tools Required
Components List
Your new Elite RO should include the following items. If any item is missing please contact Express Water. Please
take a few moments to check all the following components:
Before you begin, please make sure you have all of the following tools ready to use:
Accessories and Connections
Drain Saddle Package
Foam Gasket 2 Drain Clamp Halves 2 Nuts
2 Bolts
Valve
Body

7
Sy󰎣em Components
1. Feed Water Adapter Valve
2. Solenoid
3. Stage 1 Sediment Filter
4. Stage 2 Carbon Block Filter
5. Stage 3 Carbon Block Filter
6. Male Tee (3/8”)
7. Male Elbow (3/8”)
8. Low Pressure Switch
9. Flow Splitter (3/8”)
10. Adapter (3/8” to 1/4” QC)
11. Adapter (3/8” male to 3/8” QC)
12. Incoming Pressure Gauge
13. Operating Pressure Gauge
14. Male Membrane Elbow
15. Check Valve (3/8”)
16. High Pressure Switch
17. Flow Restrictor
18. Union Tee (3/8” 3/8” 1/4”)
19. Post Carbon Filter
20. RO Membrane Housing
21. Booster Pump
1
3
in
out
Stage
1
Stage
2
Stage
3
in in
out out
45
6
7
7
8
10
11 11
11 11
11 11
12
13
15
16
20
21
17
14
14
9
7777
7
7
Drain Line
(Optional)
Tank Connection
7
in out
18
Pure Water
Outow
6
6
19
Pure Water
Outow
2
Stage
5

8
Sy󰎣em Guide
Working Pressure Gauge
This will show the pressure
at which your Boo󰍰er
Pump is operating.
Incoming Pressure Gauge
This will show the pressure
of your incoming water.
Untreated Water Inow
This is where your untreated or “tap” water
enters the sy󰍰em. The water then proceeds
through the ve 󰍰ages of ltration.
Pure Water Outow
This is where the sy󰍰em
delivers your puried water,
this can be routed into a
faucet or directly into an
appliance or other device.
Drain Line
This is where the impure water rejected by the Reverse
Osmosis Membrane (the 4th 󰍰age of ltration) is ushed
out. This should go to a drainage pipe or other outlet. This
water is not safe for consumption, but can be used for
purposes like watering plants. The sy󰍰em rejects between
1 and 3 gallons of water on average.

9
Tubing Quick Connect Guide
To Cut Tubing
Make your cuts again󰍰 a at cutting surface with a razor blade, or use a handheld tube cutter. Any cuts to your
Tubing mu󰍰 be perfectly 󰍰raight.
NOTE! Improperly cut Tubing may leak water or fail to lock into Fittings.
Wait until all elements of your RO Sy󰍰em are in their nal locations before cutting your Tubing.
Make sure you measure the length you will need before cutting. Please avoid unnecessary additional tubing as it will
aect the eciency of your water production and delivery.
Attach Tubing
Push Tubing in 󰍰raight and level with
the Collet. The Tubing will go 13/16ths
of an inch into the Collet before the
lock is activated. Pull out on the Tube to
make sure the lock has activated and the
Tubing is secure.
NOTE! Once connected, make sure to
check tubing is secure.
13/16”
13/16”
The tubing in your RO Sy󰍰em uses a
Quick Connect locking mechanism to
lock the Color Coded Tubing in place. Be
careful not to damage your tubing as you
unpack it.
NOTE! Make sure to remove any
plugs before attempting to insert
tubing.
Release Tubing / Plugs
Push and hold the Collet in to release the
lock while pulling out on the Tube / Plug.
NOTE! Collet mu󰎤 be held down while
pulling up on the tube to release the
tube.
Hold
Down
Plug
Collet
Fitting

10
Feed Water Adapter Valve
NOTE!
If your Cold Water Valve is too old or weak to connect
to directly Option A you can connect at the top of the
line where the faucet connects Option B (if applicable,
some sinks do not have this connection point).
2. Locate the Cold Water Valve underneath the sink
and turn it o completely. Next, open the cold water
handle on your sink to release pressure by expelling
any exi󰍰ing water. Check to make sure the water has
󰍰opped owing completely before proceeding.
CAUTION!
The water supply to the unit MUST be from
the COLD WATER LINE. Using HOT WATER will
severely damage your RO Sy󰎣em.
Do Not Connect To
Hot Water Line!
NOTE!
On single-handle faucets the hot water may have to
be turned o to prevent hot water crossover (only
during your r󰍰 in󰍰allation).
If water 󰍰ill continues to come out of the faucet with
the Cold Water Valve turned o, then the main water
supply mu󰍰 be turned o as well.
1. Fir󰍰 you will assemble the feed water adapter. Wrap
the threading of the smaller portion of the adapter
(with the red handle) with 10-14 wraps of teon tape.
Then screw the smaller portion of the adapter into the
side of the larger portion as shown.
Hot Water
Line
Cold Water
Line
A
B
Teon Tape

11
3. The Feed Water Adapter Valve can be used 1/2” feed line plumbing. If your feed line is another size you will need
an adapter for setup.
Using the Feed Water Adapter Valve
During in󰍰allation leave your Feed Water Adapter Valve in the CLOSED position until Sy󰍰em Startup.
The Feed Water Adapter Valve controls all water coming into your RO Sy󰍰em. If for any reason you need to 󰍰op
incoming water turn the Feed Water Adapter Valve to the CLOSED position. Always turn this valve o before replacing
lters, if a leak is discovered, or when shutting down the sy󰍰em.
CLOSED CLOSEDOPEN
Next, use an adju󰍰able wrench to secure the Adapter Valve either directly to the Cold Water Valve Option A or
further up in the line before the faucet Option B (if applicable).
Make sure your Adapter Valve is in the closed position when in󰍰alling.
NOTE!
Do Not Use Teon Tape!
Use your wrench to tighten the connection, be careful not to over tighten.
WARNING!
INCOMING WATER PRESSURE SHOULD NOT EXCEED 100 PSI
1/2” Connection

12
Drain Saddle
The Drain Saddle is used to connect the Drain Line to a drain pipe under the sink, or other drain plumbing. The Drain
Saddle is designed to t around a 󰍰andard 1.5 inch OD (outer diameter) drain pipe.
NOTE! Adju󰍰able drain saddles are available upon reque󰍰 if the saddle does not t your pipe.
The Drain Saddle should always be in󰍰alled above (before) the P-Trap and on a 󰍰raight vertical or horizontal section
of pipe. To avoid clogging the drain line with debris do not in󰍰all the Drain Saddle after the drain pipe meets a
garbage disposal or dishwasher drain. The image below shows ideal Drain Saddle locations.
1. Once you have found where your Drain Saddle will go on the Drain Pipe make a mark for the opening there with a
marker or pencil.
2. Use your drill and 3/8 inch (9.525mm) drill bit to drill a hole at your mark. Be careful to drill through one side of the
pipe only and 󰍰abilize your pipes while drilling to avoid damaging them.
3. Find the half of the Drain Clamp with a hole in its center. Then remove the backing from the Foam Gasket (the
foam circle at the center of the Gasket is disposable). Make sure to align the Foam Gasket hole with the Drain Clamp
hole and 󰍰ick the adhesive side of the Gasket to the inner wall of the Drain Clamp half.
4. Take the half of the Drain Clamp without the Foam Gasket and insert a nut into the recess on each side.
5. Position both halves of the Drain Clamp on the drain pipe with the clamp’s opening aligned over the drilled hole.
The Foam Gasket will be between the drain clamp and the drilled hole. Push your 3/8 inch drill bit through both holes
(the Drain Clamp hole and the hole in the Drain Pipe) and remove to verify that the clamp is properly aligned with the
hole you drilled.
6. Secure the Drain Clamp halves together in place on the Drain Pipe. Screw the bolts through the Drain Clamp half
with the Foam Gasket and into the half you in󰍰alled the nuts. Do not over tighten. When tightening bolts make sure
there is equal space on both sides between the Drain Clamp halves.
*Adju󰍰able drain saddles are available if the saddle does not t your pipe
P-Trap
Garbage
Disposal
Nut
Drain Line Tube
Foam Gasket
Drain
Clamp
Drain Pipe
3/8” Hole
Bolt
Mount Drain Saddle
at either location
OK
OK
OK
WARNING!
Never mount there!
X
X
X

13
Filter Housing Assembly
NOTE!
The Sediment Filter will be on the far right
The 3 Carbon Block Filters will be on the opposite side.
Filter
Filter
Housing
Tighten Filter Housings
The housings may need little or no tightening. You can expect to make a quarter turn at mo󰎣. The majority
of sy󰎣ems will need no tightening. Be careful not to overtighten.
2. The RO Membrane cap is already on the sy󰍰em.
To make sure the cap is secure, tighten the RO
Membrane Housing Cap with the (smaller) membrane
housing wrench. DO NOT OVERTIGHTEN!
1. Finish tightening each prelter housing using the
(larger) lter housing wrench.
Housing O-Ring

14
Water Storage Tank
If you are using a water 󰎣orage tank with this sy󰎣em you will connect it here. If not you can skip this page.
1. Identify the 󰍰em tee on the inow side of the PAC lter and remove the plug from the quick connect arm of the
tee. (refer to the Quick Connect Guide on Page 9).
2. Use 3/8” tubing to connect this tting to your water tank.
3. Keep the Tank Valve in the Closed Position until Sy󰍰em Startup.
NOTE! The Tank Valve only controls water leaving the Water Storage Tank. To 󰍰op all incoming water use the Feed
Water Adapter Valve.
Tank Connection Point
Tank Connection Point

15
Sy󰎣em Connections
You may have already completed some or all of these connections in previous 󰍰eps. Make sure to remove any plugs
before in󰍰alling Tubing. Use the provided Locking Clips to secure any Tubing connections.
A to B Connect the 3/8” tubing to the Feed Water Adapter Valve (point A), remove plug then connect to the open
inlet of the branch tee on the sediment lter (point B).
To connect tubing to the Feed Water Adapter Valve, r󰎣 remove the Lock Nut by unscrewing it from
the valve. You will then push the tubing over the ridge on the end of the valve. Then the lock nut will go
through the other end of the tube until you can screw it back onto the valve.
Drain
The drain line is this piece coming
o of the Membrane Housing at
the back of the sy󰍰em.
Use the provided tubing to direct
your drain ow to your desired
location.
You can direct the drainage into
a drain saddle on a sink pipe, into
a oor drain, or another option.
that will allow for unre󰍰ricted
water ow.
Output
The outgoing ow line is this
elbow coming o of the PAC. This
delivers Pure Water Outow to
your desired source.
This can be connected to a faucet
or any point of use to supply with
your pure RO water.
NOTE! If you are using a tank,
this is not where you connect the
tank.
B
A
Lock Nut
Drain Line
Pure Water

16
Sy󰎣em Startup
Sy󰎣em Maintenance
NOTE! Do not drink water from your new sy󰎣em until you have completed Sy󰎣em Startup. The ushing
process is needed for your lters to begin working.
NOTE! Do not send water through any appliance until ushing is complete, carbon nes ushed during
󰎣artup will clog appliances.
1. [SKIP IF NOT USING A TANK] Turn the Tank Valve to the Closed position.
2. Open the water supply to the RO Sy󰍰em (use Cold Water Supply and Feed Water Adapter Valve refer to pages 10
and 11) (Make sure the main water supply is also on)
3. Open your sy󰍰em’s pure water outow and wait up to 10 minutes for water to 󰍰art owing. Let the water ow for
30 minutes. [if your outow is connected to an appliance in󰍰ead of a faucet remove the line from the appliance and
allow water to ow into a bucket or drain]
4. Stop your outow (by either closing the faucet handle or closing the outow line) and wait 10-15 minutes for
pressure to build. Then carefully check your RO Sy󰍰em for any leaks. Feel or visually inspect every connection point
for leaks. If a leak occurs, turn the Feed Water Adapter Valve OFF.
[If not using a tank simply let pure water ow for 30 minutes, then proceed to 󰍰ep 12]
[SKIP 5-11 IF NOT USING A TANK]
5. Turn the Tank Valve to the Open position.
6. Allow the Water Storage Tank to ll completely (the time will vary depending on the size of your tank and your
incoming water quality).
7. Flush the sy󰍰em by opening pure water outow until the water in your water 󰍰orage tank is completely emptied
and the ow is reduced to a trickle or 󰍰ops (about 1-5 minutes).
8. Stop your pure water outow and allow the Tank to ll again.
9. Repeat 󰍰eps 6-8 again. Occasionally check for leaks during this time
10. After the 2nd tank is lled you may drink the water.
11. Check for leaks daily during the 1󰎣 week of use and periodically thereafter.
NOTE! You may notice that the water has a milky color during the 1󰍰 week. This is an indication of air bubbles in the
water. This is normal during this period and the water is safe to drink.
These recommendations are intended for maximum eciency of your Light Commercial RO Sy󰍰em.
Filter and RO Membrane Storage
Store unopened lters in an airtight container to prevent them from absorbing air. This prolongs the shelf life of the
lters and avoids any possible odors or contamination from the air.
Store in a cool, dry, dark place (avoid heat and moi󰍰ure contamination).Using this method it is okay to 󰍰ore lters for
several years.
Extended Sy󰎣em Non-Use
If you will not be using the RO Sy󰍰em for two weeks or more you will need to follow the “Vacation Mode” guide on
page 20.

17
Filter Change In󰎣ructions
This Commercial RO Sy󰍰em contains Filters that mu󰍰 be
replaced at regular intervals to maintain proper performance.
Use only authentic Express Water lters.
How to Change the SED and 2 ACB’s (Prelters)
(Recommended about every 6 months, depending on water use)
1. You will need a clean cloth, dish soap, and appropriate Sediment and
Carbon Block Filters. (We also recommend a bin large enough for the
sy󰍰em to sit in. The sy󰍰em will release water when it is disassembled.)
2. Turn o the Cold Water Supply connected to the RO Sy󰍰em (refer to page 10), the Feed Water Adapter Valve (page
11), and the Tank Valve [if you are using a tank].
3. Place the RO Sy󰍰em in the bin and unscrew the 3 Prelter Housings using the Filter Housing Wrench. Remove old
lters and dispose of them.
4. Wash the Prelter Housings with dish soap then proceed to rinse until all soap is removed.
5. Ensure that your hands are washed clean before unwrapping the new lters. After unwrapping, place the new lters
inside their correct housings (refer to page 13). Make sure each Housing has an O-Ring rmly in place in the Housing’s
lower groove (ju󰍰 below the threading).
6. Tighten the Prelter Housings using the Filter Housing Wrench. Do not overtighten. If these are the only lters you
are replacing continue to the Re󰍰arting the Sy󰍰em section on Page 18.
How to Change the RO Membrane
(Recommended about every 6 months to 1 year.
Lifespan varies based on quality of incoming water.)
NOTE! Make sure you have shut down
the RO Sy󰎣em (Step 2 in the above section).
1. Open the RO Membrane Housing by unscrewing the cap. Pull out the RO Membrane with a pair of pliers. Be sure
to note which side is the front and which side is the back.
2. Wash out the RO Membrane Housing. In󰍰all the new RO Membrane in the Housing in the correct direction you
noted earlier. Make sure to push the Membrane in rmly, then close the Housing by tightening the cap with your
hand. If this is the only/la󰍰 lter you are replacing continue to the Re󰍰arting the Sy󰍰em section on Page 18.
SED
Make sure the O-Ring is in place before
you tighten the Membrane Housing Cap
How to Change the Po󰎣 Activated Carbon Filter
(Recommended about once a year)
NOTE! Make sure you have shut down the
RO Sy󰎣em (Step 2 in the Prelters section).
1. Unscrew the lter housing and remove the old lter.
2. Wash the housing, unwrap the ACB lter and place it in the lter housing.
3. Making sure the O-ring is in place, tighten the housing.
ACB ACB

18
Re󰎣arting The Sy󰎣em
1. Fully open the Feed Water Adapter Valve, Cold Water Supply, and the Tank Valve [if you are using a tank].
[If not using a tank simply let pure water ow for 15 minutes]
[SKIP 2-5 IF NOT USING A TANK]
2. Open the Pure Water Outow and fully empty the tank before turning your outow o.
3. Let the sy󰍰em rell with water (the time will vary depending on the size of your tank and your incoming water
quality). You can open your Pure Water Outow briey to release any air trapped inside the sy󰍰em while it’s lling. (Be
sure to check for new leaks during the r󰍰 24 hours after re󰍰arting)
4. After the Water Storage Tank has lled CLOSE the Feed Water Adapter Valve and drain the entire sy󰍰em by
opening your Pure Water Outow until water ow 󰍰ops. Then 󰍰op your outow.
5. Repeat 󰍰eps 3 and 4 again to fully ush the sy󰍰em.
NOTE! If the RO Sy󰍰em is connected to an appliance do not drain the sy󰍰em through these devices. The excess
carbon nes from the new carbon lter can clog or damage your appliance.
(Recommended Once a Year)
1. Before you begin you will need a new Sediment Filter, 2 Carbon Block Filters, RO Membrane, Po󰍰 Activated Carbon
Filter, Filter Housing Wrench, and a container to mix water and bleach. We also sugge󰍰 using a bin large enough for
the sy󰍰em to sit in (the sy󰍰em will release a lot of water when it is disassembled).
2. Close any incoming water (Feed Water Adapter Valve page 11).
3. Open pure water outow and drain the sy󰍰em completely (wait until water ow 󰍰ops completely), then close the
outow.
4. Use the Filter Housing Wrench to open the Filter Housings, then remove and dispose of ALL lter cartridges.
5. Mix 1 gallon of water with 2 tbsp of household bleach. Do not add bleach directly to the lter housing.
6. Fill up the Prelter Housings (Sediment and the 2 Carbon Block Housings) with your mixed solution and close the
housings using your Filter Housing Wrench.
7. Open the incoming water to the sy󰍰em (Feed Water Adapter Valve page 14) and let it run for 10 minutes.
8. Open your Pure Water Outow and let it drain for 10 minutes.
9. Close the Pure Water Outow and wait for 10 minutes then open the Outow again and wait for it to drain
completely.
(If you smell bleach from your pure water outow repeat 󰎣eps 7-9)
10. You are now ready to replace all lters and re󰍰art your sy󰍰em. Please refer to page 13 for detailed in󰍰ructions,
ignore any additional sanitation 󰍰eps therein.
How to Sanitize your RO Sy󰎣em

19
FAQ’s
Do you need a tank?
No, you can directly use water as the Commercial RO sy󰍰em produces it, however, for immediacy you may wish to use a
tank as this will increase your supply of in󰍰antly available water.
Does this sy󰎣em lter Fluoride, Lead, Pharmaceuticals, and Arsenic?
Yes, as well as Cyanide, Phosphate, Pe󰍰icides, Sodium, Cadmium, Sulfates, and many other contaminants up to certain
levels. You may need other changes to media for high levels of these sub󰍰ances.
What PSI do I need? What is the operating pressure?
The minimum PSI for the sy󰍰em is 10 and the maximum PSI is 100. If your PSI is too high you can purchase a Pressure
Regulator to reduce your pressure to acceptable levels. Let us walk you through these options; call us at 1-800-992-8876
or visit expresswater.com
Does this unit soften water?
Your Commercial RO Sy󰍰em will soften water. However, hard water does reduce the lifespan of your Filters.
Can I in󰎣all this sy󰎣em in the basement? If so, will it aect the eciency of the RO Sy󰎣em?
Yes, the Commercial RO Sy󰍰em can be in󰍰alled in a basement or other locations that are indoors with adequate water
pressure, drainage, and power supply.
What is the discharge rate?
The typical discharge range is one to three gallons for every one gallon produced. Your water pressure, incoming water
quality, and water temperature will aect your RO Sy󰍰em’s discharge rate.
How often do I change Filters? Is there an indicator?
The Sediment and Carbon Block Filters should be changed every 6 months. The RO Membrane and Po󰍰 Activated
Carbon Filter should be changed every one year at the same time as the second change of the 6 month lters. There is
no direct indicator for lter changes. However, if you notice a drop in water quality before the 6 months or 1 year mark
this may mean that due to your water quality your lter has degraded. If you reach 6 months or 1 year without noticing
a change in ta󰍰e you should 󰍰ill change your lter at this point as they are no longer viable.
Can I reuse discharge water?
Never consume discharge water. With proper in󰍰allation it is possible to utilize your discharge water. Contact Express
Water to speak with a qualied representative who can give you more information based on your situation.
Why are there bubbles in the water?
Bubbles in your water is a common issue, but it only aects the appearance of your water and poses no risk. Frequently
air can be trapped inside any plumbing sy󰍰em, so the air may be coming from your home’s plumbing and not the RO
Sy󰍰em. Trapped air happens frequently when you change a lter, when there is a leak in your plumbing, or even when
there is con󰍰ruction in your area. Check your sy󰍰em carefully for any leaks or unexplained moi󰍰ure. You may need to
carefully tilt the sy󰍰em various directions then set it back in place to help release trapped air.
Why do I need to ush the sy󰎣em?
New lters (or lters that have experienced extended disuse) can develop carbon residue. One hour of direct Pure Water
Outow or two Water Storage Tank empties are recommended to release any extra carbon before the water is safe to
drink.
What if I need to produce more water?
There are a lot of solutions to this problem, it’s possible to upgrade your water sy󰍰em with some specialty equipment or
we can help you with other solutions. Ju󰍰 contact us and we can help you nd the solution that be󰍰 ts your project.

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When you plan to not use your Commercial RO Sy󰍰em for 2 weeks to 1 month it should be Turned O. Locate the red
Feed Water Adapter Valve connected to your Cold Water Supply (refer to page 10).
Turn O Sy󰎤em: Turn the red Feed Water Adapter Valve to point away from the Tubing connection (in the Closed
position, page 11) to close the water supply to the sy󰍰em.
Turn On Sy󰎤em: Turn the red Feed Water Adapter Valve to point towards the Tubing connection
(in the Open position, page 11) to open the water supply to the sy󰍰em.
For deactivation of 1 month or more:
1. Shut the incoming water supply and drain the entire sy󰍰em of water through your Pure Water Outow.
2. Remove each lter and place vertically on a clean surface until dry.
3. Place each lter individually in a sealed air tight pla󰍰ic wrap and place in the refrigerator for the duration (if lter is
reusable and less than 3 months old).
4. You may leave the Sy󰍰em and Filter Housings disassembled to ensure it 󰍰ays dry to prevent bacteria growth.
5. You should wash the lter housings before replacing the lters, when you are ready to re󰍰art the sy󰍰em.
NOTE! Depending on your area’s water you may not be able to reuse some or all of your lters. Please contact us if
you need more information.
Vacation Mode