Clean Water 7500-REV4 User manual

Rev-032023
Clean Water Made Easy
www.cleanwaterstore.com
7500-Rev4
Greensand Filter
Installation Guide

Rev-032023
Thank you for purchasing a Clean Water System!
With proper installation and a little routine maintenance your system will be providing iron free
water for many years.
Please review this start-up guide entirely before beginning to install your system, and follow the
steps outlined for best results.
Minimum pressure of 30 PSI recommended.
Maximum pressure recommended 80 PSI.
For indoor installation only.
Protect from sunlight, rain, and freezing.
GREENSAND MEDIA CONTAINS DUST.
USE MASK TO AVOID BREATHING DUST.
No potassium permanganate granules included.
Order separately.
Questions?
Call us toll-free: 1-888-600-5426 or 1-831-462-8500
Email us: [email protected]
See more information on our website: www.cleanwaterstore.com/resources

Rev-032023
Table of Contents
Packing Lists 4
Pre-Installation 5
Best Practices for Piping & Drain Installation 5
How the Bypass Valve Works 6
Installation of Your System in Copper or Metal Piping Systems 6
How Your Greensand Filter Works 7
Diagram of Typical Installation Well Water 7
Filter Tank Assembly and Installation Instructions 8
Pot Perm Tank Set Up 10
Programming Your Valve and Setting Time and Days for Backwash 11
Set Time of Day 12
Set Date 12
Set Capacity 13
Pink Water After the Greensand Filter 14
Advanced Programming Mode 15
When to Add More Potassium Permanganate 17
Clean the Injector 17
Exploded Parts View 18
7500-Rev4 Water Filters Limited Warranty 20

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Packing Lists
All systems include:
7500-REV4 control valve, small tube of silicone grease, bypass valve, power supply, funnel for
adding media, top screen, start-up guide, and items included in one of the following options:
Find Your Size System to See What is Included:
Greensand Filter 0.75 cubic foot size
8” x 44” lter tank with distributor tube
9 lbs. lter gravel
0.75 cubic foot of Greensand.
Greensand Filter 1.0 cubic foot size
9” x 48” lter tank with distributor tube
12 lbs. lter gravel
1 cubic foot of Greensand
Greensand Filter 1.5 cubic foot size
10” x 54” lter tank with distributor tube
16 lbs. Filter gravel
1.5 cubic foot of Greensand
Greensand Filter 2.0 cubic foot size
12” x 52” lter tank with distributor tube
20 lbs. lter gravel
2.0 cubic foot of Greensand
Greensand Filter 2.5 cubic foot size
13” x 54” lter tank with distributor tube
35 lbs. lter gravel
2.5 cubic foot of Greensand
What to Do if Your Tank is Not Level Out of the Box:
Your black lter tank base is not glued to the bottom of your tank. Occasionally tank bases will
become crooked during shipment. If you nd that that your tank does not sit level on the oor,
you can easily adjust it by holding the empty tank and knocking it on a concrete or solid oor
once or twice to level it.

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Pre-Installation
1. Review your packing list and make sure you have received all the parts before installation.
2. If you are going to be turning o the water to the house and you have an electric water
heater, shut o the power to the water heater before beginning installation in case water
heater is accidentally drained.
3. Pick a suitable location for your lter system on a dry level spot where it won’t be exposed to
freezing temperatures. A minimum of 20 PSI is required. Maximum pressure is 90 PSI.
4. Get all of your plumbing parts together before beginning installation, and make sure you
have received all of your packages before beginning or scheduling an installation.
Installation typically takes 3 to 5 hours. However, after installation the Greensand Filter
must be allowed to run through a complete regeneration (backwash and rinse cycle) with
potassium permanganate.
5. After the system is installed and running, your water may be discolored particularly if you
have older or corroded piping. This typically clears up over a day or two.
Best Practices for Piping & Drain Installation
1. Make sure to connect the Inlet from your water source and outlet,
following arrows on control valve. Connect the External Flow Control
tting onto the Drain line.
2. Make sure there is a working gate or ball valve before the system and also
one after as well as a bypass valve.
3. A hose bib (which is a faucet to which you can attach a garden hose)
is strongly recommended after the Greensand Filter and before the
second ball valve. This makes it easy to rinse your new Greensand Filter
on start-up and gives you a place to test the water.
4. 4If you will be using copper piping, do not sweat the copper pipe directly on to the 7500-REV4
control valve.
5. To connect drain line to drain, use an air-gap connection, so that if your sewer or septic tank
backs up, it cannot cross connect with the drain tubing.
6. The pipe connectors are 1’ male pipe thread but you can add a reducer to reduce to ¾” pipe
with common pipe ttings if needed.
7. Make sure bypass valves are closed (system is in bypass) when you rst start installing and
keep on bypass until you are ready to start it up with the rst backwash.

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7500-Rev4 Greensand Filter Installation & Startup Guide
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How the Bypass
Valve Works
Turn knob so the valve is bypassed
when installing.
When you go to start up system turn
the bypass SLOWLY to let water in
and put in service.
Installation of Your System in Copper
or Metal Piping Systems
If your new lter system is to be installed in a metal (conductive) plumbing system, i.e., copper,
or galvanized steel pipe, the plastic components of the system will interrupt the electrical
continuity of the plumbing system.
As a result, any stray currents from improperly grounded appliances downstream or potential
galvanic activity in the plumbing system can no longer ground through the contiguous
metal plumbing.
Some homes may have been built in accordance with building codes, which encouraged the
grounding of electrical appliances through the plumbing system.
Consequently, the installation of a bypass consisting of the same material as the existing
plumbing, or a grounded “jumper wire” bridging the equipment and reestablishing
the contiguous conductive nature of the plumbing system must be installed prior to your
systems use.
This is simple and easy step to take if you are installing your water treatment system into
copper piping.
A simple ground jumper wire with a pipe clamp can be purchased at any Home Center, or
hardware store etc. for a few dollars.

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7500-Rev4 Greensand Filter Installation & Startup Guide
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How Your Greensand
Filter Works
Water enters the top of the tank and ows down
through the media and up the distributor tube.
Iron and manganese are removed and trapped in
the greensand media.
During backwash the ow of water is reversed
and water ows down the distributor tube and
up through the media, lifting and expanding the
Greensand media and washing out the trapped
iron and manganese to drain.
After the rst backwash, a brine draw cycle
draws in potassium permanganate solution
from the pot perm tank and slowly rinses and
restores the greensand media in a process called
“regeneration”.
The 7500-Rev4 Control Valve tracks the amount
of water that is used and will backwashbased on
gallons OR every 4 to 7 days, whichever comes
rst.
The number of gallons and days between
backwashes can be adjusted to suit your needs.
Diagram of Typical Installation Well Water

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Filter Tank Assembly and Installation Instructions
1. Wrap the top of distributor tube with electrical or duct tape
so that no gravel or Greensand media will go down the
distributor tube when adding the media.
2. Add the lter gravel that came with your order. You want the
gravel to cover the bottom distributor screen before adding
the Greensand media.
3. Next add Greensand media. The tank should be about 2/3rds
full of media, do not ll more than 2/3rds, even if there is
some media left over.
4. Remove cap or tape from top of distributor tube. Be careful not to pull up distributor tube.
5. A 1 cup of Clorox or other chlorine bleach and ll tank completely with water. This will
allow the Greensand Backwash Filter media to settle and reduce the need of purging the air
out of the tank later. Allow Greensand to soak for at least 1 hour but 24 hours or more is OK.
6. Add a small amount of silicone grease to the inner O-ring,
where the distribution tube goes.
7. Next, install the top screen by inserting upwards and rotating to
lock in place. (This is a funnel-shaped plastic screen that locks
into the bottom side of control valve.
8. Lubricate the main tank O-ring with silicone grease and screw
on the 7500-Rev4 control valve carefully. Do not use pipe-joint
compound, vegetable oil, Teon tape, or Vaseline or other
greases to lubricate tank threads.
9. Connect bypass assembly with 1” pipe connectors to control
valve install black clips and make sure valve is in bypass
position.
10.Insert meter cable into meter cable port on bypass.
11.Install inlet and outlet piping and hook up drain line tubing
to drain.
12.Connect 3/8” black tubing to potassium permanganate tank.

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7500-Rev4 Greensand Filter Installation & Startup Guide
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13.If you are in earthquake zone, strap your backwash lter tank to wall with metal strapping.
14.Proceed to programming your 7500-Rev4 control valve timer and backwash frequency.
15.IMPORTANT.
You must program the time and then start a backwash and rinse. The lter system
must be allowed to go through a complete regeneration (backwash, brine draw of the
potassium permanganate solution, rapid rinse). See following pages for instructions.

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Pot Perm Tank Set Up
1. First remove the rubber band in the pot perm tank, that
comes on the oat assembly from the manufacturer.
2. Add enough clean water to the pot perm solution tank to
bring water level about 1” above the felt pad.
3. Add one 2-lb or one 5-lb jug of potassium permanganate
granules to the potassium perm tank by pouring it directly
on top of the white felt pad.
4. Do not pour permanganate down the white plastic brine
well where the black line is attached.
5. See the over-ow barbed tting for the safety oat on the
side of the perm tank.
6. You do not have to connect this to a drain. But, if the safety
oat were to malfunction, there is a small chance that pot
perm solution will leak or drip out of this tting.
7. If this would cause a big mess where you have installed
the greensand lter, hook some tubing to this and run to
a bucket, oor pan or oor drain. Normally no pot perm
solution will leak out of this tting.

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Programming Your Valve and Setting Time
and Days for Backwash
How to Start a Manual Backwash: Press the Back / Regen button
Pressing “Back Regen” at any time results in an immediate manual regeneration.
Pressing and holding for 3 seconds, when system is locked, results in a delayed regeneration at
the preselected time.
Extended Power Outage Indicator
If power outage exceeds 3 days, the time-of-day indicator “_” will ash 12:12. The current time of
day needs to be re-set. All other set parameters remain stored in memory. The valve will resume
to operate from the point of the power outage.
Lockout Function
Keypad will lock after 5 minutes without use. To access the parameter changes, press and hold
“Up” and “Down” buttons simultaneously for 3 seconds to unlock.
NOTE: To start all you need to do is set current time and date. All other parameters have
been preset for you.

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Set Time of Day
1. If LOCK icon is lit, press, and hold both UP and
DOWN buttons for 3 seconds to unlock keypad.
2. Then press the MENU/CONFIRM button to enter the
main menu.
3. Press DOWN button to scroll down to and select
“Set Time of Day”
4. Press the MENU/CONFIRM button again to change
time of day (Hour will ash)
5. Adjust hour by using DOWN or UP buttons.
6. Press the MENU/CONFIRM button again to change
minutes (Minutes will ash)
7. Adjust minutes by using DOWN or UP buttons.
8. Press Back/Regen
Set Date
1. If not in the main menu, press the MENU/CONFIRM button to enter the main menu.
2. Press DOWN button to select and scroll down to “Set Date”
3. Month: Press the MENU/CONFIRM button again to change time of day (Month will ash) and
adjust to current Month date by using DOWN or UP buttons.
4. Day: Press the MENU/CONFIRM button again to change Day date (Day date will ash) and
adjust to current day date by using DOWN or UP buttons.
5. Year: Press the MENU/CONFIRM button again to change Year date (Year date will ash) and
adjust to current Year by using DOWN or UP buttons.
6. Press BACK/REGEN button to save current date and go back to menu.
7. Continue to review and/or change the remaining settings (as follows)

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Set Capacity
This refers to the number of gallons your 7500-Rev4 is set to backwash. Default is 800 Gallons.
This means that your lter will backwash every 1400 gallons of water used, OR every 4 days,
whichever comes rst, since your Maximum Days for Regen. Is set to every 4 days as well.
Set Regen Time This is the time your system will backwash. Default is 2:00 AM
Set Backwash Time Length Set for 10 minutes. This is the rst cycle.
Set B. S. R. Time “Brine Slow Rinse” time. Set for 60 minutes. This is where the potassium
permanganate solution is drawn in to the system.
Set Secondary Backwash Time Set for 8 minutes.
Set Fast Rinse Time Set for 8 minutes.
Set B. R. Time ”Brine Rell” – this is where the pot perm tank rells.
Pick your iron lter size and enter minutes.
Maximum Days for Regen. Set to 4 Days. This refers to the days
between each backwash. The recommended initial setting for the
Greensand Filter is every 4 days for families or heavy use and every 7
days for 1 to 2 persons in the home.
If you experience pressure loss or see iron in water in between
backwashes, increase frequency of backwash up to once per day.
Usage Logs: The following are diagnostic menus you can review later if you wish:
Daily Usage Log
Daily Peak Usage
Weekly Usage Log
Weekly Peak Usage
Monthly Usage Log
Monthly Peak Usage
Review Regen. Times
B.R. Times
0.75 CF 4 MIN.
1.0 CF 5 MIN.
1.5 CF 6 MIN.
2.0 CF 7 MIN.
2.5 CF 8 MIN.

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Start the First Backwash
1. After programming, the system must be run through 2 or 3 backwash/rinse
regeneration cycles to clean the new lter media.
2. Start with both bypass valves in the Bypass Position.
3. Press the BACK/REGEN button once to enter the backwashing cycle.
4. When the backwash icon is displayed, slowly open the bypass
to a quarter position to make the water ow into the tank and
out the backwash drain line to drain.
5. After several minutes open bypass valve completely.
6. If possible, verify that the backwash ow corresponds with the
size of your system below. Run drain hose to a bucket & verify
the ow rate in gallons per minute. An adequate backwash is
critical. For example, if the backwash water lls a 5-gal bucket
in 1 minute, you have 5 gallons per minute (GPM).
7. After the backwash, the system will automatically go into the fast rinse stage. The control
valve will return to service status (indicated by the up owing meter on the left).
8. Repeat the Regeneration (backwash and rapid rinse cycle) step one or two more times.
CONGRATULATIONS,
YOU ARE DONE SETTING UP YOUR VALVE!
Pink Water After the Greensand Filter
Note if you see pink water in the house after the greensand, this means that a cycle has been
interrupted. This is caused when potassium permanganate solution is drawn into the greensand
lter but then the backwash or rinses are interrupted.
This can happen is there is a power interruption during the regeneration (backwash, rinse)
process. If you see pink water, run the water in the house until the water is clear.
Put the system on bypass or allow to run through a complete regeneration if you see pink water.
Backwash Flow Rates
0.75 CF 5 GPM
1.0 CF 5 GPM
1.5 CF 5 GPM
2.0 CF 7 GPM
2.5 CF 10 GPM

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Advanced Programming Mode
Skip this for most applications as your lter system has already been set to
correct modes.
1. Plug the RevV4 in and immediately press in sequence MENU/CONFIRM, then press BACK/
REGEN button, then press the DOWN button to enter the Advanced Programming Mode.
2. Press UP or DOWN buttons or to select the menu item to be changed
3. Note: If valve locks while programming, unplug power supply and repeat step above.
4. Press MENU/CONFIRM to enter the main menu
5. Press the UP or DOWN buttons to highlight each option.
6. Press MENU/CONFIRM to enter highlighted option.
7. Press the UP or DOWN buttons to adjust the value.
8. Press the MENU/CONFIRM to accept the changes.
9. Press BACK/REGEN button to advance to service status

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Screen View Default Settings
Review Company Info CWS 831-462-8500
Set Valve Model 62605
Set Language English
Set Company Info CWS 831-462-8500
Set Hour Mode 12 HR
Set Time of Day Current time of day
Set Date Current date
Set Program Type Interlock
Set Regen Cycles No. 2
Set Set Clear Data Close
Set Regen Mode A-01
Set Capacity 800
Set Regen Time 2:00 AM
Set Backwash Time 10 Minutes
Set B.S.R. Time 60 Minutes
Set Secondary B.W.T. 8 Minutes
Set Fast Rinse Time 8 Minutes
Set B.R. Time 10 Minutes
Max Days for Regeneration 4
Signal Output Mode b-01
Set Service Alarm Disabled
Review Regen Times NA
Review Software Version Ver. 5.0

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7500-Rev4 Greensand Filter Installation & Startup Guide
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When to Add More Potassium Permanganate
Add one 5-lb jug of potassium permanganate every 3 - 4 months. Check the potassium
permanganate solution tank and when you see the mound of potassium permanganate
disappear after a few months, just add another 5-lb jug. In some cases, you won’t see the
mound; you might just see solution after a couple of weeks. If you have it set to regenerate
(backwash cycles) every 1 – 3 days, you might need to add it more frequently, perhaps every
2 months.
Clean the Injector
Once a year clean the nozzle and throat on the injector. Turn o water pressure to your system
and release any pressure by opening a hose bib or faucet downstream of the lter system.
Remove the two bolts covering the injector on the side the Rev4 Control Valve, near where the
3/8” tube from the pot perm tank attaches to the control valve.
Using small screwdriver remove the injector nozzle and throat and lter screen and clean with
paperclip and rinse in vinegar to remove any deposits

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7500-Rev4 Greensand Filter Installation & Startup Guide
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Exploded Parts View

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7500-Rev4 Greensand Filter Installation & Startup Guide
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7500-Rev4 Greensand Filter Installation & Startup Guide
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7500-Rev4 Water Filters Limited Warranty
We warrant this water lter when installed according to factory recommendations, to be free from defects in
materials and workmanship as follows:
Limited Warranty
This water conditioner unit is comprised of the nest industry components available. Each individual component
used in the assembly of our equipment is covered by the original equipment manufacturer’s warranty. All
components, except those specically listed below, are warranted for a period of one (1) year from date
of installation to the original purchaser to be free of defects in materials and workmanship subject to the
manufacturer’s conditions and/or the conditions shown below.
Mineral Tanks
The berglass, polyglass or composite mineral tanks used in the assembly of this unit are warranted to be free
of defects in materials and workmanship for a period of ten (10) years on 6” – 13” size tanks, and ve (5) years on
14” and larger size tanks used for softener/ltration applications, subject to the manufacture’s conditions and/
or the conditions shown below. Warranty does not cover exposure to weather, freezing, fractures caused by
external impact, or exposure to vacuum.
Control Valves
The CWS control valve is warranted to be free of defects in materials and workmanship for a period or ve (5) years.
Conditions
1. This warranty only covers water conditioners installed for residential use. Water conditioners installed for
commercial or industrial applications are guaranteed for one (1) year from the date of installation.
2. Installation must be made in accordance with legal or local codes and manufacturer’s recommendations.
3. Failure must not result from exposure to weather, rodents, misuse, alteration, re, lightning, power surges
or neglect.
4. Water pressure must not exceed 100 PSI and water temperature must not exceed 100 degrees.
5. Subject to the above terms and conditions we will replace and/or repair, at our option, any parts of the water
conditioner found defective in materials and workmanship. Defective parts must be returned, freight pre-paid
for repair or replacement.
6. This warranty does not cover labor, shipping charges, damages caused by delays of consequential
damages or other causes beyond our control. Warranty does not cover pipes, xtures or appliances.
Warranty extends to the actual water conditioner components only.
7. This warranty is to the original purchaser and is not transferable to any subsequent owner(s).
8. No other guarantees or warranty, expressed or implied, is applicable to our product. No repair or replacement
made under the terms of the warranty shall extend this warranty.
9. Any product returned to Clean Water Store without a valid return authorization number will be rejected. Any
product found to be defective will, at the sole discretion of Clean Water Store be repaired or replaced. Clean
Water Store is not responsible for shipping cost to the repair facility.