Reo-Pure LP3 Series User manual

LP3$350'Owner’s'Manual'|''
0'
'
LP3350UM$04142016'

LP3$350'Owner’s'Manual'|''
1'
TABLE OF CONTENTS
Reo-Pure LP3-350 Model
Getting to Know Your Reo-Pure R.O. System
Major Component Diagram............................................................................................................................................2
Introduction
How Reverse Osmosis Works........................................................................................................................................3
Definition of Terms........................................................................................................................................................3
Factors Affecting System Operation and Performance ..................................................................................................3
Systems Specifications
Operating Specifications..................................................................................................................................................4
Feed Water Parameters ....................................................................................................................................................4
Design Test Conditions....................................................................................................................................................4
Design Specifications.......................................................................................................................................................4
Weight & Dimensions......................................................................................................................................................4
Installation Instructions
Unpacking Your Reo-Pure System..................................................................................................................................5
Locate Desirable Installation Site ....................................................................................................................................5
Feed Water Supply Connection .......................................................................................................................................5
Product Water Connection........................................................................................................................................... 5-6
Drain/Reject Water Connection.......................................................................................................................................6
Electrical Connections .....................................................................................................................................................6
Install Filter Cartridges ....................................................................................................................................................6
John Guest Locking Clips ................................................................................................................................................6
Start-Up Procedure
Installation Follow-Up .....................................................................................................................................................7
Pretreatment for the RO System ......................................................................................................................................7
Divert Product Water to Drain.........................................................................................................................................7
Flush the System ..............................................................................................................................................................7
Adjust the System Pressure..............................................................................................................................................7
Check the Inlet Low Pressure Switch ..............................................................................................................................7
Purge the System..............................................................................................................................................................7
Check the Product Water Pressure Switch.......................................................................................................................8
Product Water Connection...............................................................................................................................................8
Final Inspection................................................................................................................................................................8
Routine Maintenance Procedures
Filter Cartridge Installation and Replacement ........................................................................................................... 9-10
System Pressure Switches..............................................................................................................................................11
Servicing the Membrane Element..................................................................................................................................12
Sanitizing the System.....................................................................................................................................................13
Major Components Replacement List ................................................................................................................................. 14
Reo-Pure Optional Features
Automatic Flush Timer .....................................................................................................................................................15
Inline TDS Monitor...........................................................................................................................................................16
Tank Level Float Control Switch........................................................................................................................................17
Reo-Pure System Limited Warranty ................................................................................................................................... 18
System Trouble Shooting ............................................................................................................................................... 19-20
Flow and Electrical Schematics ...................................................................................................................................... 21-22
System Log Sheet ................................................................................................................................................................ 23

LP3$350'Owner’s'Manual'|''
2'
GETTING TO KNOW YOUR REO-PURE R.O. SYSTEM
LP3-350 System with Standard Features
It is important to familiarize yourself with your new Reo-Pure Reverse Osmosis System.
Pictured below is a front and rear view of the system, with the main components identified. These components
will be referenced to throughout the manual. Noting their locaiton will assist you in the startup and maintenance
of the R.O. System.
IMPORTANT!–!This!manual!covers!the!installation,!operation!and!maintenance!of!the!Reo7Pure!LP37350!
Reverse!Osmosis!System.!It!is!important!to!read!this!manual!thoroughly!BEFORE!installing!the!system.!For!
systems! that! are! equipped! with! optional! features,! refer! to! the! appropriate! optional! feature! inserts,!
located!at!the!end!of!the!manual.'

LP3$350'Owner’s'Manual'|''
3'
INTRODUCTION
Your Reo-Pure System has been designed to produce quality
water for a variety of applications. We are confident that you
will find Reo-Pure Systems provide quick and simple
installation, hassle-free maintenance, and years of reliable and
trouble free operation.
Reo-Pure Systems incorporate years of engineering
experience, dedicated workmanship, and quality manufactured
components. Each system is built with pride and is factory
tested for superior performance.
As with all products, the customer has the responsibility to
ensure that the Reo-Pure System is operated under proper
conditions and within design limitations. All installation,
startup and maintenance instructions must be followed
carefully.
HOW REVERSE OSMOSIS WORKS
Reverse osmosis is a separation process in which water is
forced under pressure through a membrane in the opposite
direction from normal. The membrane allows water to pass
through and blocks or hinders the passage of dissolved
substances and suspended particles. This process reduces the
dissolved salts, minerals, and suspended particles, while
improving the taste, odor, and clarity of the water. The process
is further enhanced by allowing the feed water to continuously
pass over the surface of the membrane, sweeping away the
concentrated salts, minerals and suspended particles.
The Reo-Pure membrane element divides the feed water into
two streams: product water (permeate) which is now purer
than before, and is the desired result; and concentrate water
(reject or drain, plus recirculation) which carries the
concentrated dissolved salts, minerals, and suspended particles
that were rejected by the membrane element down the drain.
DEFINITION OF TERMS
Feed Water – The incoming water to be processed by the
Reo-Pure System.
Product Water (Permeate) – The portion of the feed water
that has passed through the membrane element. It is the
desired result of a Reo-Pure System.
Concentrate Water (Reject or drain water, plus
recirculation) – Used to describe the portion of feed water
that has flowed across the membrane (not through), and has
not been converted to product water. This water now contains
a higher concentrate of dissolved solids and may also contain
organic matter and suspended particles rejected by the
membrane. The concentrate is then split into two streams,
reject and recirculation. The recirculated water is mixed with
the feed water on the inlet side of the pump. The reject water
is sent down the drain. This design is used as a way to
minimize the amount of water sent to drain.
Recovery – The percentage of feed water that becomes
product water. The recovery rate is determined by the number
of gallons (or liters) of product water divided by the total
gallons (or liters) of feed water, and multiplied by 100.
Percent Rejection – The percentage of dissolved solids in the
feed water that does not pass through the membrane. The
membrane prevents passage of dissolved solids and other
contaminants into the product water.
Conductivity – The property of a substance to conduct or
transmit electricity. The unit of measure is in mhos and is
commonly used to determine the purity or quality of water. In
the water treatment industry, it is often converted to PPM TDS
(Parts Per Million Total Dissolved Solids).
FACTORS AFFECTING SYSTEM
OPERATION AND PERFORMANCE
Feed Water Temperature – The volume of product water
increases with higher feed water temperatures, and decreases
with lower feed water temperatures. Temperatures below 35°F
could crack the membrane element, and temperatures
exceeding 90°F may cause rapid deterioration. The
recommended range is between 45°F and 90°F.
Feed Water Pressure – The recommended range is between
40 PSI and 85 PSI. This is the most common range of
municipal water supplies.
Hydrolysis – The natural chemical breakdown of membrane
elements when in contact with water. This breakdown is
accelerated when the water temperature is above 90°F, when
the pH is not within the tolerable range, or when hydrogen
sulfide is present. Refer to the System Operating
Specifications section of this manual. Additional pre-treatment
may be required in these cases.
Bacteria – R.O. Systems may be exposed to bacteria if
operated intermittently. Following a prolonged shutdown or
storage period, the system should be sanitized. Refer to the
section in this manual regarding sanitization.
Fouling or Surface Coating of the Membrane Element –
Fouling is a common problem with membrane elements as a
result of salts, hardness, iron, etc. collecting on the membrane
surface. The pores and channels of the membrane element
become plugged reducing the water production rate. Pre-
treatment equipment, such as a water softener, iron filter, or
activated carbon filter will reduce membrane element fouling
and extend its life.

LP3$350'Owner’s'Manual'|''
4'
SYSTEM SPECIFICATIONS
OPERATING SPECIFICATIONS
Production Rates:
350 GPD (1,325 LPD)*
Rejection Rate:
Minimum 95% – Maximum 99%
Low Feed Water Pressure Switch:
System shuts down at 15 PSI decreasing pressure
Product Water Pressure Switch:
System shuts down at 45 PSI ~ System starts at 25 PSI
Electrical:
Standard – 120V, 60Hz, 1Ph (Optional –220V, 50Hz, 1Ph)
Operating Pressure:
100 PSI
*System production may vary depending upon incoming water temperature and chemistry.
FEED WATER PARAMETERS
Systems are designed for use with potable water sources only
Hardness:
Maximum 10 GPG (Over 10 GPG should be softened)
Iron:
Maximum 0.01 PPM (Dissolved Only)
Turbidity:
Maximum 1 NTU
Hydrogen Sulfide:
Must be removed
Chlorine:
Maximum 0.1 PPM
Inlet Feed Water Pressure:
Minimum 40 PSI Maximum 85 PSI
pH Range:
4 to 10
Feed Water TDS:
Consult Reo-Pure Manufacturer if TDS exceeds 2,000 PPM
Temperature:
Minimum 45oF – Maximum 90oF
Max Operating Pressure:
150 PSI
DESIGN TEST CONDITIONS
Operating Pressure:
100 PSI
Feed Water TDS:
500 PPM as NaCI
Design Temperature:
77oF (25oC)
Membrane Element:
TFC Polyamide – 21” High Flux
Design Recovery:
50%
DESIGN SPECIFICATIONS
Operating
Pressure
Inlet
Conn.
Product &
Reject Conn.
Filter
Housing
Membrane
Element
Motor
60 Hz
Pump
100 PSI
3/8" NPTF
3/8" Tube
20" SL
2.5 x 21”
1/3 HP
125 GPH
WEIGHT AND DIMENSIONS
Shipping Dimensions
Installation Dimensions
Wgt
Height
Width
Depth
Height
Width
Depth
Lbs
In
Cm
In
Cm
In
Cm
In
Cm
In
Cm
In
Cm
75
41
104
21
53
19
48
33
84
14
36
16
41

LP3$350'Owner’s'Manual'|''
5'
INSTALLATION INSTRUCTIONS
Reo-Pure RO Systems will operate most efficiently on filtered
water with a pH of less than 6.5, an SDI of 5 or less, and
hardness of less than 10 GPG. If the system is operated with
levels higher than these, other forms of pretreatment may be
necessary.
Feed water must not contain free chlorine, formalin,
quaternary germicides, cationic surfactant, detergents
containing non-ionic surfactant, such as ALL or Triton, or
membrane element cleaners other than those approved for use.
UNPACK YOUR REO-PURE SYSTEM
Reo-Pure Systems are carefully inspected, tested, and
packaged. They are shipped in proper working order and in
excellent condition. Remove the system from the shipping
carton/container and inspect it for signs of concealed damage,
which may have occurred during shipping. If damage has
occurred, immediately contact the delivering carrier and file a
claim for damages.
LOCATE DESIRABLE INSTALLATION SITE
Determine a desirable location for your Reo-Pure system. It
should be positioned on a hard level surface capable of
supporting the entire weight of the system. See SYSTEM
SPECIFICATIONS for approximate weight and dimensions.
FEED WATER SUPPLY CONNECTION
A cold water supply source must be located within close
proximity to the system. This will be the inlet feed water
supply. Feed water pressure must be a minimum of 35 PSI.
The manual feed water shut-off valve was shipped loose with
the system. Wrap the male end of the valve with Teflon tape
and screw it into the sediment pre-filter marked INLET.
Connect the feed water supply source to the 3/8" NPTF shut-
off valve. We recommend using 3/8" pipe, 1/2" OD tubing, or
3/8" hose.
PRODUCT WATER CONNECTION
During the initial start-up procedure, after a membrane
element replacement, or after sanitization of the system, you
will want to divert the product water line to your wastewater
drain. This can be done by either installing a 3-way valve in
the line or by disconnecting the tubing to your storage tank. It
is always important to divert the product water to drain for 30
to 60 minutes of operation, because membrane elements are
treated with preservative solution that should be rinsed free.
(continued on next page)
CAUTION – Do not connect a hot water line
to the Reo-Pure system. Feed water must be a
cold water supply.
IMPORTANT!–!Installation must comply with state and
local plumbing, electrical, and sanitation codes.'
)
IMPORTANT! –
Do not use this system to make drinking
water from non-potable water sources. Do not use the
system on microbiologically unsafe water, or water of
unknown quality without adequate disinfection before or
after the system.

LP3$350'Owner’s'Manual'|''
6'
INSTALLATION INSTRUCTIONS (continued)
If a pressurized storage tank is being used, the system is
equipped with a product water pressure switch, which will
shut the system off when the pressure in the tank reaches 45
PSI. The system will turn on again when the pressure in the
tank decreases to 25 PSI.
If an atmospheric storage tank is being used, a tank level float
control switch and repressurization system (optional features)
will be required to shut the system off and to pump the
product water to your application.
Remove the plug from the product water outlet (marked
PRODUCT) located in the two-way divider at the bottom of
the product water pressure switch. Connect a 3/8" OD product
water line to the marked outlet, but do not connect it to the
storage tank or other dispensing system at this time. There will
be further instructions in the System Start-Up Section
regarding additional steps required, prior to connecting the
storage tank.
DRAIN / REJECT WATER CONNECTION
A wastewater drain must be near the installation site. This will
be your connection for the reject water (drain) which is
carrying a high level of concentrated dissolved salts, minerals,
and suspended particles that were rejected by the membrane
element.
Remove the plug from the drain water outlet (marked
DRAIN) at the bottom of the reject water assembly, located
near the center of the unit. Using 3/8" OD tubing connect this
outlet port to your wastewater drain.
NOTE: We recommend installing an air gap connection
designed to prevent wastewater back flow.
ELECTRICAL CONNECTIONS
A grounded electrical supply of the proper voltage for your
system should be near the installation site. The system will be
damaged if connected to a power source other than the
voltage, phase and hertz specified on the serial number label.
See the wiring diagram at the end of this manual for the
correct power connections.
Every LP3 Series 60Hz, 120V, 1Ph model comes equipped
with an In-Line On/Off Toggle Switch – conveniently located
next to the system pressure switches. Please reference the
wiring diagram at the end of this manual for more information.
Optional 50Hz, 220V, 1Ph Power – If your system was
ordered with the optional 50Hz, 220V, 1Ph feature, you will
need to provide your own electrical plug. Attach the
appropriate plug to the end of the 14-3 cord that is connected
to the Inlet Feed Water Low Pressure Switch.
INSTALL FILTER CARTRIDGES
Please refer to the section titled “Filter Cartridge Installation
and Replacement” in this manual.
JOHN GUEST LOCKING CLIPS
To ensure the highest level of reliability and system longevity,
red locking clips have been installed on all John Guest tubing
connections. This will make the connections more secure and
protect the system from accidental disconnects. Two extra
locking clips have been included with this manual. These
should be attached at the product and drain ports of the
system, after you have made your connections.'
IMPORTANT!–!Installation must comply with state and
local plumbing, electrical, and sanitation codes.'
)
IMPORTANT! –
Prior to the start-up of system, visually
inspect the inlet, drain, and product water connections
completely. Also check to be sure the system is
connected to a properly grounded electrical power supply
with the appropriate voltage, phase, and hertz.
CAUTION – A water softener should not be
allowed to regenerate while the Reo-Pure
System is operating, unless safeguards are
used to be sure the system is shutdown or
operating on an alternate source of softened
water.
CAUTION Connecting the system to a
power source that does not match the system
power rating exactly can damage the system
and void the warranty.
CAUTION – While the On/Off Toggle Switch
may be in the OFF position, the power cord
should still be unplugged for any servicing or
maintenance to the Reo-Pure™ RO System.
'

LP3$350'Owner’s'Manual'|''
7'
START-UP PROCEDURES
INSTALLATION FOLLOW-UP
1.!Visually inspect the water connections.
2.!Be sure filter cartridges have been installed.
3.!Confirm connection to the proper power source.
NOTE: The membrane element(s) will have been installed
in the system during the final testing procedures unless
other arrangements have been made with the
manufacturer.
PRETREATMENT FOR THE RO SYSTEM
A water analysis of your feed water should have been
performed to determine what type of pretreatment may be
required. See Feed Water Parameters for this system before
operating this system.
DIVERT PRODUCT WATER TO THE DRAIN
During the initial start-up of the system, it is important to
divert all of the product water to a wastewater drain for
approximately 30 to 60 minutes. Membrane elements are
treated with a preservative solution and should be thoroughly
rinsed clean before water is retained for use. This can be done
either by installing a 3-way valve in the product water line or
by diverting your product water line to drain. Do not connect
the product water line to a storage tank at this time.
FLUSH THE SYSTEM
Standard System With Manual Flush - Open the inlet feed
water shut-off valve and allow the system to fill with water.
Press the pressure relief button to release the air from the filter
housings, and open the manual flush valve.
Plug the power cord into the wall outlet. The inlet solenoid
valve will open, and the pump will start. When the system is
turned on, the solenoid valve automatically opens. The valve
will close when the system is turned off. The system will only
start with sufficient feed water flow and pressure (minimum
35 PSI). Low inlet feed water flow and low pressure can result
in damage to the system.
Allow the system to run approximately 3 to 5 minutes to bleed
all trapped air and to flush the membrane element. Then, close
the manual flush valve.
System With Optional AutoFlush Feature - If your system is
equipped with the optional Automatic Timed Flush feature,
the manual flush valve will be eliminated. In place of the
manual flush valve is a Flush solenoid valve. The solenoid is
wired to the electrical enclosure and is pre-set so that a one-
minute flush will occur every time the system goes into
operation. A one-minute flush will also occur every 2 hours
the system runs constant.
Open the inlet feed water shut-off valve and allow the system
to fill with water. Press the pressure relief button to release the
air from the filter housings. Plug the power cord into the wall
outlet and the system will start with a one-minute automatic
flush. You may want to repeat this step to insure the
membrane element is thoroughly rinsed. After the flush cycle
has stopped, proceed to the next step.
ADJUST THE SYSTEM OPERATING PRESSURE
Adjust the system pressure regulator so that the system
pressure gauge reads 100 PSI. Turn the pressure regulator
clockwise to increase the pressure, and counterclockwise to
decrease the pressure.
This Reo-Pure System was designed to operate at 50%
recovery. The gallons per day of product water produced will
vary based on the feed water TDS, feed water temperature,
and the backpressure on the system.
Measure the amount of time in seconds it takes for the system
to produce 1 quart of product water. Use the following
formula to calculate the gallons per day: 21,600 divided by the
seconds it took to produce one quart, equals the gallons per
day.
CHECK THE INLET LOW PRESSURE SWITCH
The inlet feed water low-pressure switch is preset at the
factory. Its purpose is to prevent damage to the system if there
is inadequate feed water flow or pressure.
This step is to verify that it is functioning properly. Slowly
decrease the inlet feed water supply by closing the manual
feed water shut-off valve, while watching the pre-filter outlet
pressure gauge. If the system shuts down when the pressure
drops to approximately 15 PSI, then the inlet pressure switch
is functioning correctly. If it is not functioning correctly, refer
to the Section of this manual on System Pressure Switches.
PURGE THE SYSTEM
Allow the system to operate approximately 30 to 60 minutes
diverting the product water to drain. Once all of the membrane
preservative is flushed from the system, product water may be
retained for use.
(continued on next page)
IMPORTANT MAINTENANCE – Depending on the
quality of your feed water, we recommend the manual
flush valve be opened at least once a week for 3 to 5
minutes to rinse the membrane element.
IMPORTANT – Frequently check the system for any
leaks that may develop.
CAUTION – Never allow the Reo-Pure
system pressure to exceed 150 PSI'

LP3$350'Owner’s'Manual'|''
8'
SYSTEM START-UP PROCEDURES (continued)
CHECK THE PRODUCT WATER PRESSURE SWITCH
If your system is equipped with a product water pressure
switch, it is preset at the factory to shut the system down at 45
PSI, and restart the system at 25 PSI. Its purpose is to stop and
start the system when a pressurized storage tank is used. If the
product water pressure switch is not shutting down the system
when the pressurized storage tank is full, refer to the section in
this manual titled “System Pressure Switches.”
PRODUCT WATER CONNECTION
For convenience, we recommend installing a tank shut-off
valve prior to the pressurized storage tank. The storage tank
may take several hours to fill with product water.
FINAL INSPECTION
Once the above procedures are completed, visually inspect all
water connections. Check to be certain that all connections are
tight and secure.
CAUTION – A water softener should not
be allowed to regenerate while the Reo-Pure
system is operating; unless safeguards are
used to be sure the system is shutdown or
operating on an alternate source of softened
water.
'

LP3$350'Owner’s'Manual'|''
9'
FILTER CARTRIDGE INSTALLATION & REPLACEMENT
FILTER CARTRIDGE INSTALLATION
This Reo-Pure System includes two pre-filter cartridges: the 5-
micron sediment pre-filter cartridge that collects sediment, and
the carbon block pre-filter cartridge that reduces undesirable
tastes, odor and chlorine.
NOTE: The sediment cartridge and the carbon block
cartridge have been packaged separately and will need to
be installed prior to start-up.
1.!Remove the filter cartridges from their packaging.
2.!Remove the filter sumps by turning clockwise.
3.!Place the sediment cartridge over the standpipe in
bottom of the filter sump for the Sediment Pre-
Filter, and place the carbon block cartridge over the
standpipe in bottom of the sump for the Carbon Pre-
Filter. (See diagram at right)
4.!Replace the filter sumps on the filter housing caps,
making sure that the sediment filter is positioned
below the Sediment Pre-Filter label, and the carbon
block filter is positioned below the Carbon Pre-
Filter label. DO NOT OVER TIGHTEN.
NOTE: The membrane element(s) have been installed in
the system during the final testing procedures, unless other
arrangements have been made with the manufacturer.
CHANGING FILTER CARTRIDGES
Filter cartridges have a limited service life and should be
replaced if you experience noticeable changes in product
water taste, color, odor, or flow rate. On average, filter
cartridges should be replaced about every 3-6 months.
Your Reo-Pure System is equipped with pre-filter inlet and
pre-filter outlet pressure gauges. An increase in the pressure
difference of 10-12 PSI between the two gauges is an
indication that the filter cartridge may need to be replaced.
1.!Turn OFF the feed water supply. The Reo-Pure
System will shut down.
2.!Relieve all the pressure from the system by opening
the manual flush valve and pressing the pressure
relief button. If your system is equipped with the
Automatic Timed Flush feature, press the pressure
relief button while the system pressure gradually
decreases.
3.!Disconnect the main power supply
4.!Remove the filter sumps by turning clockwise.
Locate and remove the large o-rings, then wipe them
clean of lubricant and set aside. It is common for the
o-ring to lift out of the sump and stick to the cap. If
the o-ring appears to be damaged or crimped, it
should be replaced.
5.!Remove and discard the used filter cartridges.
6.!Rinse out the bottom of each sump and fill about 1/3
full of water. Add about two tablespoons of bleach
and scrub the cap and housing with a non-abrasive
cloth. Observe the precautions printed on the bleach
container. Rinse thoroughly. 
7.!Lubricate o-rings with a food grade silicone or
glycerin. Place o-rings back into the groove in the
sumps and smooth into place with your fingers. This
step is important to ensure a proper watertight seal.
8.!Place the sediment cartridge over the standpipe in
bottom of the filter sump for the Sediment Pre-
Filter, and place the carbon block cartridge over the
standpipe in bottom of the filter sump for the Carbon
Pre-Filter (See diagram above).
(continued on next page)
CAUTION – It is important that the o-ring
be properly seated each time the filter
housing is reassembled or removed. Use
only food grade silicone or glycerin to
lubricate the o-rings. Do not use a
petroleum-based product such as Vaseline.
IMPORTANT: Before performing any maintenance on
your Reo-Pure System, always disconnect the power
supply!