Pentair EVERPURE CONSERV LT-S User manual

FOODSERVICE EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
INTRODUCTION
The Everpure Conserv LT-S Processor is a pre-assembled solution designed to provide high purity water for steam
applications. It combines a number of water treatment technologies into one easy-to-install package. The Processor provides
reduction of sediment. It also limits corrosion* and scale* by reducing TDS, chlorine* and chloramines*.
INSPECTION
Before mounting the Conserv LT-S Processor, inspect the parts. Use the table and illustration provided to verify the
parts provided. If any parts are missing, contact Customer Service at 800.942.1153 (US only)/630.307.3000 or by email at
[e-mail].
Parts
1. Wall Unit with GRO-75EN RO Membrane,
Cartridge in Place
2. 4CC Mineral Cartridge
3. 4FC5 Filter Cartridge
4. Storage Tank
5. Parts Bag Containing:
Bypass Plug
Red Tubing with Connecting Elbow
Power Cord
Blue Tubing
Angled Ball Valve
Ball Valve
TDS Meter
White Tubing
Conserv LT-S
EV9975-20
EVERPURE®CONSERV®LT-S HIGH EFFICIENCY REVERSE OSMOSIS (RO) PROCESSOR
1
2
4
3
5
* Not performance tested or certified by NSF®

2 WATER YOU CAN TRUST®
Tools Required
• Hand or Electric Drill • Phillips Screwdriver
• Air Pressure Gauge • Towel
• Pencil • Safety Glasses
• Tape Measure • Drill Bits: 1/8", 1/4" and
3/8"
• Utility Knife or Tube Cutter
(for plastic tubing)
• Air Compressor with
Schrader Coupling
NOTE: Not all tools listed may be necessary for installation.
Read installation procedures before starting to
determine required tools.
SELECTING A MOUNTING LOCATION
1. Give consideration to the weight of the unit when
operating, i.e. when filled with water. Operating weight of
the Everpure®Conserv®LT-S Processor is approx.:
• 25 lbs (11.3 kgs)
2. The location should allow for:
• The Conserv LT-S Processor to be wall mounted.
• Adequate space for “in” and “out” water line
connections.
• Proximity to a drain for flushing.
• Access to a 100 - 240 Vac, 50/60 Hz AC wall plug.
• Placement of tank within 10 feet of Processor
3. The inlet water supply must meet the requirements listed
in the section "Operating Specifications".
DIMENSIONS
12.24”
(310.8 mm) 7.84
(199.2 mm)
21.14”
(537 mm)
Figure 1
SAFETY INSTRUCTIONS
NOTE: This appliance can be used by children aged
from eight (8) years and above and persons
with reduced physical, sensory or mental
capabilities or lack of experience and
knowledge if they have been given supervision
or instruction concerning use of the appliance
in a safe way and understand the hazards
involved.
NOTE: The appliance is only to be installed in
locations where its use, maintenance and
cleaning is restricted to trained adult
personnel. No one should play with the
appliance.
NOTE: Children should be supervised to ensure that
they do not play with the appliance.
NOTE: Cleaning and user maintenance shall not be
made by children without supervision.
NOTE: The appliance is not suitable for installation in
an area where a water jet could be used.
NOTE: If the supply cord is damaged, it must be
replaced by the manufacturer, its service
agent or similarly qualified persons in order to
avoid a hazard.
WARNING: Installation shall comply with applicable
local, state, and national plumbing and
electrical regulations.
WARNING: This appliance must be grounded. This
appliance is equipped with a cord having
an appliance-grounding conductor and a
grounding plug. The plug must be plugged
into an appropriate outlet that is installed
and grounded in accordance with all
local codes and ordinances. If the supply
cord is damaged, it must be replaced by
the manufacturer, its service agent or
similarly qualified persons in order to
avoid a hazard.
WARNING: Improper connection of the appliance-
grounding conductor can result in a risk
of electric shock. Check with a qualified
electrician or service representative if
you are in doubt whether the appliance is
properly grounded. Do not modify the plug
provided with the appliance; if it will not fit
in the outlet, have a proper outlet installed
by a qualified technician.
WARNING: The appliance is intended to be
permanently connected to the water mains
and not connected by a hose-set. The
appliance is not suitable for installation in
an area where a water jet could be used
and must not be cleaned by a water jet.

3EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
WARNING: Before installing the Processor, make
certain your water supply complies with
the following operating specifications.
Failure to do so may reduce the
effectiveness of the system and will void
the warranty. Consult your local water
treatment utility or a certified water
testing lab to determine the quality of your
water.
WARNING: Do not use with water that is
microbiologically unsafe or of unknown
quality without adequate disinfection
before or after the system. The Everpure®
Conserv®LT-S Processor will not protect
against disease-causing bacteria or
remove harmless, naturally-occurring
bacteria.
WARNING: The Conserv LT-S Processor contains
replaceable components that are critical to
the efficiency of the system. Replacement
of the reverse osmosis component should
be with one of identical specifications, as
defined by the manufacturer, to assure the
same efficiency and contaminant reduction
performance.
WARNING: The Conserv LT-S Processor contains filter
cartridges and an RO membrane cartridge
included with the system that have limited
service lives. Product water should be
tested periodically to verify that the
Processor is working properly.
WARNING: The Conserv LT-S Processor shall only be
used for arsenic reduction on chlorinated
water supplies containing detectable
residual free chlorine at the system inlet.
Water systems using an in-line chlorinator
should provide one (1) minute of chlorine
contact time before the unit.
CAUTION: The Conserv LT-S Processor must be
protected against freezing which can
cause the filter housing to crack, resulting
in water leakage. Do not use electrical
heating tape or propane torch on this unit.
CAUTION: Make certain the unit is firmly attached to
wall to prevent it from falling and possibly
becoming damaged.
NOTE: Substances listed as reduced are not
necessarily in your water. The Processor must
be maintained according to manufacturer's
instructions, including replacement of filter
cartridges.
NOTE: Your water must be within required limits
for satisfactory operation. If not, the RO
membrane cartridge’s life may be shortened
and your warranty will be voided (see
Operating Specifications).
NOTE: Install on cold water line only.
NOTE: Do not install where system will be exposed to
direct sunlight.
NOTE: Make certain that installation complies with all
state and local laws and regulations.
NOTE: Use only plumbers tape without adhesive
backing to seal joints. Do not use pipe
compound (“pipe dope”), sticks, or similar
compounds with this unit; they contain
petroleum derivatives which can cause
crazing and cracking of the plastic in the filter
housing.
NOTE: Use only soap and water to clean components.
NOTE: Do not use aerosol sprays (bug spray, cleaning
fluids, etc.) near the Conserv LT-S Processor.
They contain organic solvents which can cause
crazing and cracking of the plastic in the filter
housing.
NOTE: During extended periods of non-use, turn OFF
the water supply to the unit and remove the
cartridges. Place the cartridges in a sealed
plastic bag. Store them in a refrigerator for
future use. When restarting the unit, the
cartridges are reinstalled and flushed per
instructions.
OPERATING SPECIFICATIONS
WARNING: Before installing the Processor, make
certain your water supply complies with
the following operating specifications.
Failure to do so may reduce the
effectiveness of the system and will void
the warranty. Consult your local water
treatment utility or a certified water
testing lab to determine the quality of
your water.
Inlet Temperature: 32 - 100°F (0 - 37.7°C)
Dynamic Operating
Pressure:
40 - 85 psi (2.7 - 5.8 bar, 0.27 - 0.58
MPa), non-shock
Maximum Static
Pressure
125 psi (8.6 bar, 0.86 MPa)
Inlet Total Dissolved
Solids:
1,000 ppm maximum
Sulfide, Iron and
Manganese: Less than 0.1 ppm
Water Supply pH Limits: 4 to 11
Turbidity: 1.0 NTU maximum
For cold water use only.

4 WATER YOU CAN TRUST®
EVERPURE CONSERV®LT-S PROCESSOR
1Secure Unit to Wall
Approximately
25 lbs
(11.3 kgs)
Operating
Weight
1
3
2
Remove RO
Membrane
2
3

5EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
2Connect Valve to Storage Tank 3Connect Tubing for Flushing
Precharge Storage Tank
5-7 psi (0.34 bar, 0.034 MPa)
3/8" Tubing
Product Water
Out
1
3
2
4
3/8" Tubing
To Storage
Tank
3/8"
Tubing
Supply
Water In
CLOSE
OPEN
4Prepare to Flush the Everpure®4FC5 Cartridge
1
3
2
Connect
Electrical
Install
Bypass
Plug
CLOSE
Unplugged
Inlet Water

6 WATER YOU CAN TRUST®
5Install and Flush Everpure®4FC5 Cartridge
1
2
4FC5
OPEN
Plugged
1
4
Inlet Water
Install
Cartridge
Flush to Drain Five (5) Minutes
2
3
5
Plug In Power Cord
Unplug Power Cord
Closed Valve
As Shown
6Prepare the Pentair®GRO-75EN Cartridge for Use
Replace
Membrane
2
Remove Cover
1

7EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
7Connect Tubing to Pentair®GRO-75EN Cartridge
Storage Tank Not Shown
1Remove Plug
Push White 3/8" Tubing
into White Connector
3
2
4
Push Red 3/8" Tubing
into Red Connector
Push Blue 3/8" Tubing
into Blue Connector
8Flush Pentair®GRO-75EN Cartridge
Plug In Power Cord
Inlet Water
Open
Flush To Drain
for 24 Hours
1
4
2
3
Fully CLOSE - Turn To Right
Unplug Power Cord

8 WATER YOU CAN TRUST®
9Set Blending Valve
Closed
Open
2"
Solid Blue
Blending Valve
1/4 Turn or Less
2"
Solid Blue
Blending Valve
1/4 Turn or Less
5
2
4
Repeat Until
Flashing Blue
Blending Valve
1/8 Turn
Press
Press
1
3
6
Plug In Power Cord
Unplug In Power Cord
OPEN One (1) Full CCW
Turn of the Valve

9EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
10 Install Everpure®4CC Cartridge
1
2
4CC
1
Remove Port
Plug
2Install 4CC Cartridge

10 WATER YOU CAN TRUST®
11 Flush Storage Tank and 4CC Cartridge
3
2
CLOSE
OPEN
1
When Pump Turns
Off, OPEN valve
5
4
Plug In Power Cord
Repeat Steps 2 and 4
Four (4) Times

11EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
HOW REVERSE OSMOSIS (RO) WORKS
The Everpure Conserv LT-S Processor uses a semi-
permeable membrane to reduce scale and corrosion. The RO
membrane cartridge contains multiple layers of micron-thin
film wound around a hollow center core. Water molecules can
pass through the cartridge, while dissolved salts are rejected.
Your water supply is prefiltered to reduce dirt and chlorine
that may foul the membrane. The RO membrane cartridge
separates this prefiltered water into RO WATER and REJECT
WATER. Water pressure forces water through the membrane
within the RO membrane cartridge then into the storage tank.
This is the RO water. Dissolved salts cannot pass through the
membrane and are sent to the drain as reject water.
The Conserv LT-S Processor features a blend-in-tank process
which uses the RO water described above, with calcium
carbonate, and adds filtered water from carbon filtration to
create a consistent product water. When you use water from
the storage tank, the pressure inside the tank drops and the
pressure switch closes. The system then begins to operate,
replenishing the water you took from the storage tank. The
storage tank can hold up to 3 gals (11.3 L) of water at one
time.
NOTE: When used under operating conditions specified
in this manual, the RO membrane cartridge of the
Conserv LT-S Processor should last 12 to 24 months.
The precise life span of the Pentair®GRO-75EN RO
Membrane Cartridge will depend on the quality of
the water entering the system and the frequency
with which you use it. Frequent use prevents the
dissolved salts from building up on the membrane
as scale. The more water the system is required to
produce, the longer the membrane will last.
INSTALLATION
NOTE: Please read all instructions, specifications, and
precautions before installing and using your
Conserv LT-S Processor.
NOTE: The Conserv LT-S Processor may be installed
hanging on a wall or set under a sink.
NOTE: The Conserv LT-S Processor must be installed
vertically.
WARNING: Improper connection of the appliance-
grounding conductor can result in a risk
of electric shock. Check with a qualified
electrician or service representative if
you are in doubt as to whether or not
the appliance is properly grounded. Do
not modify the plug provided with the
appliance; if it will not fit in the outlet,
have a proper outlet installed by a
qualified technician.
1Secure Manifold Wall Mount:
The Conserv LT-S Processor weighs approx. 25 lbs (11.3 kgs).
CAUTION: The Conserv LT-S Processor should be mounted
on a stud or firm surface. The mounting bracket
will support the weight of the system and help
prevent strain on the water lines.
1. Remove the Pentair GRO-75EN Membrane from the clip
on the wall unit.
2. When mounting the Conserv LT-S Processor on a wall,
four (4) screws are required to mount the unit. The
two (2) top screws will be 10.5" (26.7 cm) apart and
level. Screw the two (2) screws into the wall. Leave a
gap between the screw head and the wall of 1/8". The
backside of the unit has two (2) slots that will fit over the
screw heads and slide down to lock (Figure 2).
3. Tighten both screws from the front.
4. Insert screws into the two (2) remaining mounting holes.
Screw them in and tighten.
10.50”
(26.7 cm)
4x
0.45”
(1.1 cm)
Mounting Screw Slots
Figure 2
2Assemble Storage Tank:
1. Locate the right angle ball valve. Screw the valve onto the
top fitting of the Storage Tank until tight.
2. CLOSE the ball valve.
3. Apply precharge of 5-7 psi (0.34 bar, 0.034 MPa)
4. Position the Storage Tank near the Conserv LT-S
Processor.

12 WATER YOU CAN TRUST®
3Connect Tubing for Cartridge Flushing:
1. Refer to Figure 3 for a general description of connection
points.
2. Prepare the plumbing to accept the RO system.
NOTE: The blended water tubing/piping and associated
fittings connecting the RO blended water outlet to
the equipment being serviced should be food-grade
material that meets NSF®Standard 51, 61, or similar,
with a minimum pressure rating of 125 psi (8.6 bar,
0.86 MPa). The blended water may react with metal
piping, creating a corrosive condition. Plastic pipe or
reinforced beverage tubing are generally very good
material choices for RO water distribution piping.
The size of the blended water tubing/piping should
be 3/8" (9.5 mm) ID minimum. Distances of 25 feet
(7.6 m) or greater from the RO processor to the
equipment being serviced should be 1/2" (12.7 mm)
ID minimum.
3. Locate an appropriate point in the hard water plumbing
to tie in a new section of tubing/piping that can be routed
to the RO processor. CLOSE the nearest shut-off valve
that is upstream from the tie-in point and relieve the
pressure in the line. Install a 3/8" (9.5 mm) tubing/piping
section and connect it to the INLET - Supply Water fitting.
See Figure 3.
4. Connect a length of 3/8" O.D. tubing to the connection
for the Storage Tank. Route the other end to the Storage
Tank and insert it into the ball valve. The ball valve
should be closed.
5. Connect a length of 3/8" O.D. tubing to the Everpure
Conserv LT-S Processor outlet connection. Secure an
open ball valve to the other end and position it over a
drain.
Water
Supply Inlet
Figure 3
4Prepare to Flush the Everpure 4FC5 Cartridge:
The Everpure 4FC5 Filter Cartridge is installed and flushed
before the Pentair GRO-75EN RO and the Everpure 4CC
Cartridges are installed.
1. Install the bypass plug into the filter head for the
Everpure 4CC Cartridge. This head is centered and
toward the front of the unit.
2. Connect the electrical cord to the socket located on the
power supply.
3. The inlet water should be connected and turned off.
Bypass
Plug
Inlet Water
Power Cord
Figure 4
CAUTION: The cartridges are identified on the label using
the model number:
Pentair®GRO-75EN RO Membrane Cartridge
Everpure®4FC5 Filter Cartridge
Everpure®4CC Mineral Cartridge
Install the cartridges in the correct locations.
If the cartridges are installed improperly, the
processor will not operate correctly.
5Install and Flush the Everpure 4FC5 Filter Cartridge:
Locate the 4FC5 Filter Cartridge and inspect the o-rings.
They should be clean and lightly lubricated with silicone
grease.
1. Line up the tabs with the slots in the opening on the left
side of the head assembly. See Figure 5 and Figure 6.
2. Insert the cartridge to full depth.
3. Rotate the cartridge 900to the right (clockwise) to lock it
in place.

13EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
Figure 5
4. OPEN the valve for the inlet water.
5. Plug the power cord into a 115 V wall outlet.
6. Flush to drain for five (5) minutes.
7. Unplug the power cord.
1
2
4FC5
Flush to
Drain
Figure 6
6Install the Pentair GRO-75EN RO Membrane
Cartridge:
The GRO-75EN RO Membrane Cartridge is installed in the
vertical position. There are three (3) quick-connect ports that
are labeled:
• Inlet - White
• Product (RO Water) - Blue
• Drain - Red
White Port
Figure 7
CAUTION: DO NOT remove the quick-connect elbow fitting
from the red tubing. This assembly contains
a flow control that may become damaged if
removed. The efficiency of the Everpure Conserv
LT-S Processor may be affected.
1. Remove the GRO-75EN RO Membrane Cartridge from its
packaging and position it with the single white port at
the top.
2. Press the cartridge into the clip on the back plate. The
cartridge may be moved up or down to line up with the
tubing connections.
7Connect Tubing to Pentair GRO-75EN:
Blue
Red
White
Figure 8

14 WATER YOU CAN TRUST®
1. Insert RO inlet connection into the white quick-connect
port of the RO filter.
2. Insert drain water connection into the red quick-connect
port of the RO filter.
3. Insert RO water connection into the blue quick-connect
port of the RO filter.
8Flush the Pentair®GRO-75EN RO Membrane
Cartridge:
Blend Valve
Figure 9
1. Close the blend valve completely by turning it to the right
(clockwise) until it stops.
2. Apply power.
3. Flush to drain for 24 hours.
4. Turn OFF power.
USING THE TDS METER TO TEST FOR TOTAL
DISSOLVED SOLIDS
After the processor has been flushed, it is still necessary to
test and set the Total Dissolved Solids (TDS) to an acceptable
level. A TDS meter is included for testing purposes.
The included TDS Meter is designed for limited use. After
six (6) tests, the meter may not be accurate and should be
discarded.
Probe End
Figure 10
NOTE: For better accuracy and frequent testing for TDS, use
a standard pocket TDS meter.
9Set Blending Valve
The water exiting the Everpure Conserv LT-S Processor
should have a TDS reading of 80 ppm before the Everpure
4CC Cartridge is added.
NOTE: The blend adjustment valve will be opened one (1)
full turn to take the initial reading.
1. CLOSE the blend adjustment valve, then OPEN it one (1)
full turn to the left (counterclockwise).
2. Turn power ON and collect 1" to 2" of RO blended water
in a clean glass container.
3. Insert probe end of meter no more than 1" into water,
and depress blue cap. Do not submerge entire unit.
4. One (1) or two (2) lights will light immediately. Match
light(s) to the chart to get approximate range of Total
Dissolved Solids (TDS). Release the blue cap, and write
down the TDS range.
0-75 ppm (solid blue)
76-150 ppm (flashing blue)
100-250 ppm (flashing blue + solid green)
251-300 ppm (solid green)
301-400 ppm (flashing green)
401-500 ppm (solid green + flashing green)
501-600 ppm (flashing green + solid red)
601-750 ppm (flashing red)
751-900 ppm (solid red)
The Conserv LT-S Processor includes a blend system that
can combine or "blend" water sources. OPENING the blend
adjustment valve will add untreated water with higher TDS to
the RO water.
To achieve the target TDS of 80 ppm, it is likely that the blend
valve will need to be adjusted. Use the TDS reading from the
previous steps as the starting point. If that number is above
80 ppm, the blend adjustment valve will need to be closed
slightly. If that number is below 80 ppm, the blend adjustment
valve will need to be opened slightly.
NOTE: Changes to the blend adjustment valve should be
made in small increments. Adjust the valve in 1/8 to
1/4 of a rotation for best results.
The desired reading of 80 ppm is at the high end of the solid
blue range. To be certain the blended water is at or near 80
ppm, use the following procedure:
1. Run blended water into a glass and collect 1" to 2"
of water.
2. Test this water for a TDS level. Based on the result, the
mixing valve will be opened or closed.
• If the meter showed a solid blue light, then the mixing
valve will be OPENED more.
• If the meter showed any other indicator, then the
mixing valve will be CLOSED more.

15EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
3. Adjust the mixing valve if needed and run blended water
for two (2) minutes. Discard this water.
4. Repeat Steps 3, 4 and 5 until the light indicators change
between solid blue and flashing blue. The blended water
TDS should now be at 80 ppm.
10 Install the Everpure®4CC Mineral Cartridge:
Locate the 4CC Cartridge and inspect the o-rings. They
should be clean and lightly lubricated with silicone grease.
1. Turn power OFF.
2. Remove the port plug.
3. Line up the tabs on the 4CC Cartridge with the slots in
the opening on the front side of the head assembly. See
Figure 6 and insert the cartridge to full depth.
4. Rotate the cartridge 900to the right (clockwise) to lock it
in place.
1
2
4CC
Figure 11
11 Flush Storage Tank and Everpure®4CC Cartridge:
Flush the Everpure 4CC Mineral Cartridge:
The 4CC Mineral Cartridge will be flushed when the storage
tank is flushed. No further flushing is required.
Storage Tank:
The Storage Tank will hold approximately 3 gals (11.3 L). The
tank air pressure is preset to 5-7 psi (0.34 bar, 0.034 MPa)
when shipped via ground transportation. For air shipments
the precharge is completely removed. Check the tank air
pressure. Ensure that the tank has 5-7 psi (0.34 bar, 0.034
MPa) of precharge upon installation. Add air if needed. Tank
pressure may be checked using an air pressure gauge on the
air valve on the side of the tank.
Blended
Water Outlet
Figure 12
1. OPEN the ball valve on the top of the Storage Tank.
2. CLOSE the ball valve at the blended water out tubing.
3. Apply power. It will take approximately two (2) hours for
the Storage Tank to fill.
4. The pump turns off when the Storage Tank is full. OPEN
the ball valve for the blended water outlet. Allow the
Storage Tank to empty.
5. Repeat Steps 2, 3 and 4 four (4) more times.
PLACE THE CONSERV LT-S PROCESSOR INTO
OPERATION
1. Remove the ball valve from the end of the blended water
outlet.
2. Connect the blended water outlet tubing to the
application.
TESTING YOUR REVERSE OSMOSIS PROCESSOR
Total Dissolved Solids (TDS) Test
Under NSF/ANSI Standard 58, it is highly recommended that
the blended water be tested at least every six (6) months to
verify that the processor is performing satisfactorily.
CAUTION: Visually check the entire processor for leaks. If a
leak is present, see Troubleshooting.
NOTE: Initially, the water may appear cloudy. This is a result
of air trapped in the postfilter cartridge. It is not
harmful and will disappear in a matter of minutes.
It may take up to a week after installing a new
postfilter cartridge for the trapped air to dissipate.

16 WATER YOU CAN TRUST®
WHEN TO CHANGE THE CARTRIDGES
The life of the cartridges depends on the water volume used
and the substances in the water. Normally, cartridges should
be changed at intervals of 12 months. Replace the cartridges
sooner if the water pressure at the application equipment
begins to drop noticeably or if you notice changes in the flow
of the blended water.
CHANGING THE CARTRIDGES
Replacement Cartridges:
Everpure 4FC5 Filter Cartridge - EV9693-21
Everpure 4CC Mineral Cartridge - EV9627-45
Pentair®GRO-75EN RO Membrane Cartridge - 4002575
The 4FC5 and 4CC Cartridges need to be changed when
replacing the GRO-75EN RO Membrane Cartridge. All
cartridges should be changed at the same time.
NOTE: Only the replacement cartridges listed can be used
with this processor. Failure to use the recommended
replacement cartridges will void your warranty.
1. Place a small pan or towel under the Everpure Conserv
LT-S Processor to catch any water that may drip. Turn
OFF incoming water.
2. Close the ball valve on the the Storage Tank and OPEN
the application equipment valve to relieve pressure.
3. Remove the two (2) cartridges by twisting each cartridge
a 1/4-turn to the left (counterclockwise). Then pull down
to release.
4. Remove the GRO-75EN RO Membrane Cartridge by
removing the tubing from all three (3) connections. Then
pull the cartridge out of the clip.
5. At the bottom of the cartridge, remove the quick-connect
elbow from the red tubing to gain access to the flow
controller and the attached capillary tube. Replace the
flow controller (Figure 13) in the red tubing.
6. Insert a new flow controller (Figure 13) with capillary
tube into the tubing. Replace the quick-connect elbow.
Flow
Controller
Red Tubing
White
Tubing
Blue
Tubing
Figure 13
7. Insert the new GRO-75EN RO Membrane Cartridge into
position in the clip. Rotate the cartridge so the quick-
connect ports line up with the tubing.
8. Push the red and blue tubing into the quick-connect
ports at the bottom. Push the top white tubing into the
connector at the top of the cartridge.
NOTE: The bottom of the GRO-75EN RO Membrane Cartridge
will be supported by the lower bracket.
9. Position the 4FC5 Cartridge under the left side head.
Line up the tabs on the cartridge with the slots in the
head.
10. Push the new cartridge into the head until it can go no
further.
11. Twist the cartridge a 1/4-turn to the right (clockwise)
until it locks in place. Pull gently down to ensure the
cartridge is locked in place.
12. Flush the 4FC5 Cartridge following the procedure in the
Installation Instructions in Step 5.
13. Repeat Steps 10, 11 and 12 for the 4CC Cartridge in the
front center head.
CAUTION: The 4CC Cartridge may contain carbon fines that
will be removed during the initial flushing. Follow
the proper flushing procedure to prevent damage
to the GRO-75EN RO Membrane Cartridge.
INITIAL FLUSHING OF CARTRIDGES
The installation of new cartridges requires that a preliminary
flushing of the cartridges be performed. This initial flushing
is required to prevent damage to the RO cartridge.
Refer to the Installation section for the complete flushing
procedure.

17EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
EVERPURE CONSERV LT-S SANITIZING PROCEDURE -
CONTAMINATED WATER SUPPLY/BOIL ALERTS
When the water system has been contaminated or a boil
water advisory has been discontinued, the Conserv LT-S
Processor must be sanitized. If a boil water advisory has
just been discontinued: Flush the water lines according to
your water supplier's instructions. OPEN the delivery faucet
and flush the processor for about 10 minutes, then follow the
filter cartridge replacement instructions below.
1. Turn OFF the water supply and OPEN the application
valve to relieve pressure.
2. Remove the filter cartridges and discard in trash. Wash
hands with soap and warm water.
NOTE: If a drip pan is used, clean with dish soap and
warm water.
NOTE: The following steps require placing bleach into the
Conserv LT-S Processor. Pentair®offers a hollow
cartridge, Everpure®2JT Flushing/Sanitizing
Cartridge (EV9608-10), that is designed for this
application. The following steps describe how to use
the Pentair Everpure 2JT Cartridge (EV9608-10).
CAUTION: DO NOT install the Pentair®GRO-75EN RO
Membrane Cartridge for the sanitization
procedure. The solution will severely damage the
membrane.
Sanitization Procedure with the Pentair Everpure 2JT
Cartridge (EV9608-10)
3. Grasp the tip of the outlet tower center, at the top of the
cartridge and pull out gently. The entire central plug with
the long tube attached will come out, leaving a hole.
Figure 14
4. Add about a teaspoon of laundry bleach (5.25% sodium
hypochlorite solution) to the empty flushing cartridge
through the hole in the top.
5. Lubricate o-ring with a high quality silicone lubricant.
Replace the central plug assembly and insert the flushing
cartridge into the left side head for the Everpure 4FC5
Cartridge.
NOTE: Do not use petroleum jelly to lubricate the o-rings. It
will degrade the o-rings.
2JT
Plug 4CC
Port
Connect White
and Blue
Tubing
Cartridge
with
Sanitizer
Figure 15
6. Install a plug into the port for the 4CC Filter Cartridge.
NOTE: A plug was included with the Conserv LT-S Processor.
7. The tubing for the removed GRO-75EN Cartridge must
be connected together. Make a length of tubing with
angle quick-connectors. Use the length of tubing with
two right-angled quick-connectors to connect the white
tubing at the top to the blue tubing at the bottom. The red
tubing at the bottom is waste water and does not need to
be sanitized.
8. The tank valve should be open.
9. The application valve should be open.
10. The power switch should be on.
11. Slowly OPEN the water supply valve. Monitor the
water flowing out of the Conserv LT-S Processor at the
application valve. When the smell of chlorine is present,
CLOSE the application valve. The Storage Tank will fill
with chlorinated water.
12. Wait for a period of at least 30 minutes to allow adequate
disinfection time.
13. Turn OFF the water supply valve.
14. OPEN the application valve. The Storage Tank will
drain out.
15. When the Storage Tank is emptied, CLOSE the
application valve and the tank valve. Remove the 2JT
Cartridge.
16. Install a new 4FC5 Cartridge in the first (left side) head.
Follow the instructions in the section "Installing the
Cartridges" to flush the 4FC5 Cartridge.
17. OPEN the application valve and slowly OPEN the water
supply valve. Allow water to run for five (5) minutes. This
will flush carbon fines out of the new cartridge.
18. CLOSE the application valve and OPEN the Storage Tank
valve, allowing the tank to fill three (3) to five (5) minutes.

18 WATER YOU CAN TRUST®
19. Turn OFF the water supply valve.
20. OPEN the application valve to allow the tank to empty.
21. When the water flow has stopped, CLOSE the application
valve and OPEN the water supply valve to refill the tank
for three (3) to five (5) minutes.
22. Repeat Steps 18, 19 and 20 three (3) times.
23. Turn OFF the water supply valve and OPEN the
application valve to remove pressure.
24. Remove the plug from the front center port. Install a new
Everpure®4CC Filter Cartridge.
25. With the electrical power on, OPEN the water supply
valve. Flush water out of the application valve for five (5)
minutes.
26. Remove power.
27. CLOSE the water supply valve and OPEN the application
valve to remove pressure.
28. Remove the tubing that connects the Pentair®GRO-75EN
RO Membrane Cartridge white (top) and blue (bottom)
processor tubing.
29. Install a new GRO-75EN RO Cartridge. Connect the three
(3) tubes to the proper ports. The tubing and the ports
are color coded.
30. OPEN the water supply valve and the application valve.
31. Apply power and allow the application valve to drip for 12
hours.
32. CLOSE the application valve. The Storage Tank will fill.
Check for leaks during this time.
The Conserv LT-S Processor is ready for operation.
TROUBLESHOOTING
NOTE: If leaks persist, or if there are other leaks in the
processor, turn OFF water supply and call Technical
Support 800.942.1153 (US only)/630.307.3000.
Leaks Between Cartridge and Filter Housing
1. Turn OFF cold water supply to processor. CLOSE tank
valve. OPEN the application valve to relieve water
pressure.
2. Remove the cartridge, inspecting it for damage. Inspect
o-rings to make sure they are seated and clean.
3. Insert and twist the cartridge back into the filter housing.
4. Turn ON water supply. OPEN tank valve. CLOSE the
application valve after water begins to flow. If leaks
persist, call Technical Support.
Leak Between Tank Valve and Storage Tank
1. Turn OFF water supply to processor. OPEN the
application valve to drain storage tank. Run for three (3)
to five (5) minutes until water drips.
2. Remove tubing from tank valve by pressing the collar around
the fitting while pulling the tubing with your other hand.
3. Unscrew the tank valve from the storage tank.
4. Inspect the rubber seal inside the threaded area. Repair
or replace the valve as needed.
5. Thread the tank valve onto the top of the tank opening by
turning it clockwise until snug.
6. Wet the tubing and insert it 3/4" (1.9 cm) into the quick-
connect fitting.
7. Turn water supply ON and CLOSE the application valve.
8. Allow processor to pressurize for several hours and
check for leaks.
9. Check for leaks after tank is fully pressurized [one (1) to
three (3) hours]. If leak persists, call Technical Support .
Leaks at Quick-Connect Fittings
CAUTION: The 1/4" red tubing connected to the bottom
drain connection of the RO cartridge has a flow
restrictor installed. The processor will not
operate correctly if the restrictor is removed.
1. CLOSE tank valve, turn OFF cold water supply to the
processor, and OPEN the application valve.
2. Press collar around the quick-connect fitting while
pulling the tubing with your other hand.
3. Tubing should be cut squarely. Internal and external
burrs should be removed. Place a mark on tubing 5/8"
(1.6 cm) from end on 1/4" tubing or 3/4" (1.0 cm) from
end on 3/8" tubing.
4. Wet the end and insert tubing until the mark is flush with
the quick-connect fitting.
5. OPEN the cold water supply until it comes to a stop.
OPEN the tank valve and CLOSE the application valve. If
leaks persist, call Technical Support.
No Flow or Slow Flow from the Brine (Reject) Line (Less
than 6 fl. oz. or 180 mL per minute)
NOTE: Before checking brine (or reject) flow, make sure the
unit is producing water by turning the valve on the
storage tank OFF and OPENING the application valve.
Water should drip from valve.
1. Replace the prefilter cartridge according to the
"Changing the Cartridge Instructions" and recheck the
brine (or reject) flow rate.
2. If the prefilter cartridge is not at fault, the brine (or
reject) flow controller could be clogged. Call
Technical Support.
High TDS in Product Water
1. If high TDS (Total Dissolved Solids) is detected in the
blended water, the RO cartridge may need to be replaced
or the reject flow control tubing may be clogged. If this is
a new installation, call Technical Support.
2. Otherwise, draw 1 gal (3.8 L) of water from the unit. After
10 minutes, run water from the blended water port and
test the water again.
3. Determine when you last changed the RO cartridge and
call Technical Support.

19EVERPURE®CONSERV®LT-S HIGH EFFICIENCY RO SYSTEM INSTALLATION AND OPERATION GUIDE
Limited Flow at the Application Equipment Valve
1. Turn OFF water supply to processor.
2. OPEN the application valve to turn on flow.
3. Unscrew the blue cap on the side of the Storage Tank to
expose air valve. Use a small air compressor or bicycle
pump to slowly add air to the storage tank. This will
force the water out of the storage tank through the valve.
Continue to slowly add air until water stops coming out
of the valve.
4. Turn OFF the application equipment valve.
5. Using an air pressure gauge, adjust the pressure in the
storage tank to 5-7 psi (0.34 bar, 0.034 MPa).
6. Replace the blue cap.
7. OPEN the incoming water valve until it comes to a stop.
Let the processor run one (1) to three (3) hours to fill the
tank. A full tank weighs approximately 32 lbs (14.5 kgs)
pounds. If performance has not improved, call
Technical Support.
Sudden Return of Taste and Odor
If shortly after complete servicing, noticeable taste and odors
return, contact Technical Support.
NOTES
If you are experiencing a problem not listed in this manual,
shut OFF the water supply and CLOSE the tank valve. Call
Technical Support.
Check for compliance with state and local laws and
regulations.
Do not use with water that is microbiologically unsafe or of
unknown quality without adequate disinfection before or after
the system.
For installations in Massachusetts, the Commonwealth of
Massachusetts Plumbing Code 248 CMR shall be adhered
to. Consult your licensed plumber for installation of the
system. This system and its installation must comply with
state and local regulations.
Systems certified for cyst reduction may be used on
disinfected waters that may contain filterable cysts.
Substances that may be reduced are not necessarily in your
water. Filter must be maintained according to manufacturer’s
instructions, including replacement of filter cartridges.
The efficiency rating for this system is 56.31%. Efficiency
rating means the percentage of the influent water to the
system that is available to the user as reverse osmosis
treated water under operating conditions that approximate
typical daily usage.
The tested recovery rating is 63.02%. Recovery rating means
the percentage of the influent water to the membrane portion
of the system that is available to the user as reverse osmosis
treated water when the system is operated without a storage
tank or when the storage tank is bypassed.
Daily Production Rate: 70 gpd (265 Lpd).
This reverse osmosis system contains a replaceable
component critical to the efficiency of the system.
Replacement of the reverse osmosis component should
be with one of identical specifications, as defined by the
manufacturer, to ensure the same efficiency and contaminant
reduction performance.
REPLACEMENT PARTS
Contact your local Pentair®Everpure Dealer for filter
cartridges or system replacement parts.
Description Part Number
GRO-75EN RO Membrane Cartridge 4002575
4FC5 Filter Cartridge EV9693-21
4CC Mineral Cartridge EV9627-45
Storage Tank EV3146-98
TDS Meter EV3125-98
Port Plug EV3108-76
Waste Water Restrictor EV3128-31
Conserv LT-S Cartridge Kit EV9976-25
Conserv LT-S Tested and Certified by NSF
International against NSF/ANSI 58 for
the reduction of claims specified on the
Performance Data Sheet and at NSF.org.
Water Treatment
Appliance - E359339

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respective owners. Because we are continuously improving our products and services, Pentair reserves the right to change specifications without prior notice.
Pentair is an equal opportunity employer.
© 2018 Pentair Filtration Solutions, LLC. All Rights Reserved.
WATER FILTRATION
EVERPURE-SHURFLO WORLD HEADQUARTERS, 1040 MUIRFIELD DRIVE, HANOVER PARK, IL 60133 USA • FOODSERVICE.PENTAIR.COM
800.942.1153 (US ONLY) • 630.307.3000 MAIN • 630.307.3030 FAX • [e-mail] EMAIL
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011.1300 576 190 TEL • 011.61.39.562.7237 FAX • [e-mail] EMAIL
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86.21.3211.4588 TEL • 86.21.3211.4580 FAX • [email protected] EMAIL
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91.120.419.9444 TEL • 91.120.419.9400 FAX • [e-mail] EMAIL
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65.6768.5800 TEL • 65.6737.5149 FAX • [e-mail] EMAIL
EV9975-20 Rev A JA18
LIMITED WARRANTY
COMMERCIAL WATER TREATMENT EQUIPMENT
You have just purchased one of the finest water treatment units made. As an expression of confidence in this product, Pentair Filtration
Solutions, LLC (“PFS”) offers the following product warranty. This product is warranted against material defects in materials and
workmanship to the original end-user when installed in accordance with the PFS specifications. The warranty period commences on the
date of purchase and is administered as follows:
For a period of ONE YEAR Replaceable elements (i.e., filter & water treatment cartridges)*
For a period of ONE YEAR The entire system (excluding replaceable elements)
The unit must be used in operating conditions that conform to PFS’s recommended guidelines. This warranty will not apply if the unit
has been modified, repaired or altered by someone not authorized by PFS.
If a part described above is found to have a material defect in materials or workmanship within the specified warranty period, you
should notify Pentair® Everpure technical service at the phone number listed below. Any part found materially defective within the
terms of this warranty will be repaired or replaced (at PFS’s discretion) by your local dealer or Pentair Everpure technical service.
You pay only freight from our factory and local dealer charges. Any item repaired or replaced pursuant to this warranty will be
covered under the original warranty terms of the system.
PFS is not responsible for damage caused by accident, fire, flood, freezing, Act of God, misuse, misapplication, neglect, oxidizing agents
(such as chlorine, ozone, chloramines and other related components), alteration, installation or operation contrary to our printed
instructions, or by the use of accessories or components which do not meet PFS’s specifications. Refer to the specifications section in
the Installation and Operating manual for approved application parameters.
Our product performance specifications are furnished with each water treatment unit. TO THE EXTENT PERMITTED BY LAW,
EVERPURE DISCLAIMS ALL IMPLIED WARRANTIES, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR PARTICULAR PURPOSE; TO THE EXTENT REQUIRED BY LAW, ANY SUCH IMPLIED WARRANTIES ARE LIMITED IN
DURATION TO THE PERIOD SPECIFIED ABOVE FOR THE ENTIRE WATER TREATMENT UNIT.
As a manufacturer, we do not know the characteristics of your water supply or the purpose for which you are purchasing this product.
The quality of water supplies may vary seasonally or over a period of time, and your water usage rate may vary as well. Water
characteristics can also differ considerably if this product is moved to a new location. For these reasons, we assume no liability for
the determination of the proper equipment necessary to meet your requirements, and we do not authorize others to assume such
obligations for us. Further, we assume no liability and extend no warranties, express or implied, for the use of this product with a non-
potable water source or a water source which does not meet the conditions for use described in the owner’s guide or performance data
sheet for this product.
OUR OBLIGATIONS UNDER THIS WARRANTY ARE LIMITED TO THE REPAIR OR REPLACEMENT (AT PFS’S DISCRETION) OF THE
FAILED PARTS OF THE WATER TREATMENT UNIT, AND WE ASSUME NO LIABILITY WHATSOEVER FOR DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, SPECIAL, GENERAL OR OTHER DAMAGES.
Some states do not allow the exclusion of implied warranties or limitations on how long an implied warranty lasts, so the above
limitation may not apply to you. Similarly, some states do not allow the exclusion of incidental or consequential damages, so the above
limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights which vary
from state to state.
*Warranty applies to material defects in materials & workmanship only.