Axeon LP Series User manual

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MKT – ??? – ?
LP-700 PICTURED WITH
OPTIONAL FRONT PANEL
LP–Series
REVERSE OSMOSIS
SYSTEM
USER MANUAL
LP-700 PICTURED WITH
OPTIONAL FRONT PANEL AND
10” FILTER HOUSINGS

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MKT–555–B
This page is Intentionally
left blank

TABLE OF CONTENTS
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INTRODUCTION ..........................................................................................................................................................................................................................5
SAFETY AND PRECAUTIONS.....................................................................................................................................................................................................6
PRECAUTIONARY STATEMENTS ......................................................................................................................................................................................... 6
OPERATING DO’S AND DON’TS .............................................................................................................................................................................................8
FEED WATER AND OPERATION SPECIFICATION ...............................................................................................................................................................9
OPERATING LIMITS................................................................................................................................................................................................................ 9
SYSTEM SPECIFICATION CHART........................................................................................................................................................................................... 10
COMPONENT IDENTIFICATION ............................................................................................................................................................................................ 11
LP–350 SYSTEM ................................................................................................................................................................................................................... 11
LP–500 SYSTEM ................................................................................................................................................................................................................... 12
LP–700 SYSTEM ................................................................................................................................................................................................................... 13
LP–700 WITH OPTIONAL 10” FILTER HOUSINGS........................................................................................................................................................... 14
COMPONENT IDENTIFICATION DESCRIPTION ................................................................................................................................................................ 15
MEMBRANE INFORMATION................................................................................................................................................................................................... 17
MEMBRANE ELEMENT SPECIFICATIONS AND OPERATING LIMITS......................................................................................................................... 17
MEMBRANE PERFORMANCE .................................................................................................................................................................................................. 19
REJECTION............................................................................................................................................................................................................................ 19
RECOVERY ............................................................................................................................................................................................................................ 19
SYSTEM INSTALLATION........................................................................................................................................................................................................... 20
MOUNTING…………………………………………………………………………………………………………......................20
PLUMBING ............................................................................................................................................................................................................................ 20
FEED WATER CONNECTION............................................................................................................................................................................................ 20
CONCENTRATE WATER CONNECTION ....................................................................................................................................................................... 20
HOLDING TANK CONNECTION...................................................................................................................................................................................... 21
PERMEATE CONNECTION................................................................................................................................................................................................. 22
ELECTRICAL ........................................................................................................................................................................................................................... 22
MEMBRANE INSTALLATION.................................................................................................................................................................................................... 23
MEMBRANE REPLACEMENT .................................................................................................................................................................................................... 25
SYSTEM PURGING / INITIAL START UP .............................................................................................................................................................................. 26
LP–350 AND LP–700 SYSTEMS....................................................................................................................................................................................... 26
LP–500 SYSTEM .................................................................................................................................................................................................................. 26
TEMPERATURE FACTOR FOR MEMBRANES........................................................................................................................................................................ 27
OPERATING LOG ..................................................................................................................................................................................................................... 28
TEMPERATURE CORRECTION FACTORS.............................................................................................................................................................................. 29
TROUBLESHOOTING ............................................................................................................................................................................................................... 30
TECHNICAL ASSISTANCE……………………………………………………………………….…………………………….…30
FLOW DIAGRAM...................................................................................................................................................................................................................... 31
LP– 350 SYSTEM................................................................................................................................................................................................................ 31
LP–500 SYSTEM................................................................................................................................................................................................................. 32
LP–700 SYSTEM ................................................................................................................................................................................................................ 33
WIRING DIAGRAM .................................................................................................................................................................................................................. 34
LP–500 WIRING DIAGRAM............................................................................................................................................................................................ 34

TABLE OF CONTENTS
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SYSTEM WARRANTY................................................................................................................................................................................................................ 35

INTRODUCTION
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Your LP–Series Reverse Osmosis System is a durable piece of equipment which, with proper care, will last for
many years. This User Manual outlines installation, operation, maintenance and troubleshooting details vital to
the sustained performance of your system.
If your system is altered at the site of operation, or if the feedwater conditions change, please contact your
local dealer or distributor to determine the proper recovery for your application.
DO NOT, UNDER ANY CIRCUMSTANCES, REMOVE ANY CAUTION, WARNING OR OTHER DESCRIPTIVE
LABELS FROM THE SYSTEM.
IN ORDER TO MAINTAIN THE MANUFACTURER’S WARRANTY, AN OPERATING LOG MUST BE MAINTAINED
AND COPIES WILL NEED TO BE SENT TO YOUR LOCAL DEALER OR DISTRIBUTOR FOR REVIEW.
PRIOR TO OPERATING OR SERVICING THE REVERSE OSMOSIS SYSTEM, THIS USER MANUAL MUST BE READ
AND FULLY UNDERSTOOD. KEEP THIS AND OTHER ASSOCIATED INFORMATION FOR FUTURE REFERENCE
AND FOR NEW OPERATORS OR QUALIFIED PERSONNEL NEAR THE SYSTEM.
PLEASE READ THE ENTIRE MANUAL BEFORE PROCEEDING WITH THE INSTALLATION AND START–UP.
FAILURE TO FOLLOW INSTRUCTIONS OR OPERATING PARAMETERS MAY LEAD TO THE PRODUCT’S
FAILURE, WHICH CAN CAUSE PROPERTY DAMAGE AND/OR PERSONAL INJURY.

SAFETY AND PRECAUTIONS
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The Safety section of this User Manual outlines the various safety headings used throughout this manual’s text
and are enhanced and defined below:
CAUTION: INDICATES STATEMENTS THAT ARE USED TO IDENTIFY CONDITIONS OR
PRACTICES THAT COULD RESULT IN EQUIPMENT OR OTHER PROPERTY DAMAGE.
WARNING: INDICATES STATEMENTS THAT ARE USED TO IDENTIFY CONDITIONS OR
PRACTICES THAT COULD RESULT IN INJURY OR LOSS OF LIFE. FAILURE TO FOLLOW
WARNINGS COULD RESULT IN SERIOUS INJURY OR EVEN DEATH.
ELECTRICAL HAZARD: INDICATES STATEMENTS THAT ARE USED TO IDENTIFY HIGH-VOLTAGE
AND POTENTIAL SHOCK / ELECTROCUTION.
STATEMENTS IN BOLD AND ALL CAPITALS ARE ADVISORY OR INFORMATIONAL STATEMENTS OF
PARTICULAR IMPORTANCE TO THE HEADING UNDER WHICH THEY ARE FOUND.
DO NOT USE WHERE THE
WATER IS MICROBIOLOGICALLY UNSAFE OR OF UNKNOWN
QUALITY WITHOUT ADEQUATE DISINFECTION BEFORE OR AFTER THE SYSTEM.
ALWAYS TURN OFF THE UNIT, SHUT OFF THE FEEDWATER, RELIEVE PRESSURE, AND
DISCONNECT THE ELECTRICAL POWER BEFORE WORKING ON THE UNIT.
PRE–
TREATMENT MUST BE SUFFICIENT TO ELIMINATE CHEMICALS, ORGANICS OR
INORGANICS THAT COULD ATTACK THE MEMBRANE MATERIAL.
DO NOT OPERATE THE SYSTEM WITH INSUFFICIENT FEED FLOW. NEVER ALLOW THE PUMP
TO RUN DRY.
NEVER ALLOW THE UNIT TO FREEZE OR OPERATE WITH A FEEDWATER TEMPERATURE ABOVE
85°F.
DO NOT PERMIT CHLORINE TO BE PRESENT IN THE FEED WATER.

SAFETY AND PRECAUTIONS
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DO NOT SHUT DOWN THE SYSTEM FOR EXTENDED PERIODS. IT IS BEST TO RUN THE SYSTEM
AS MUCH AS POSSIBLE ON A CONTINUOUS BASIS.
ELECTRICAL
INSTALLATION SHOULD BE DONE BY QUALIFIED, TRAINED ELECTRICIANS.
INSTALLATION SHOULD BE TO LOCAL CODES.

OPERATING DO’S AND DON’TS
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DO
•Change the cartridge filters regularly.
•Monitor the system and keep a daily log.
•Run the system as much as possible on a continuous basis.
•Adjust the system recovery to the recommended value.
•Always feed the pump with filtered water.
DON’T
•Permit chlorine to enter or be present in the feed water.
•Shut down the system for extended periods.
•Close the throttle valve completely.
•Operate the system with insufficient feed flow or pressure.
•Operate the pump dry.

FEED WATER AND OPERATION SPECIFICATIONS
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Nothing has a greater effect on a reverse osmosis system than the feed water quality. If your system is
altered at the site of operation or if the feed water conditions change, please contact your local dealer or
distributor to determine the proper recovery for your application. Before starting the RO system it is strongly
suggested to obtain an up to date water analysis of the water to be treated.
IT IS VERY IMPORTANT TO MEET THE MINIMUM FEED WATER AND OPERATING
REQUIREMENTS OUTLINED IN THIS MANUAL. FAILURE TO DO SO WILL CAUSE DAMAGE OR
FAILURE OF THE SYSTEM COMPONENTS AND MEMBRANES. DAMAGE TO THE SYSTEM DUE
TO OPERATION OUTSIDE OF THE SPECIFICATIONS OUTLINED IN THIS MANUAL WILL VOID
THE MANUFACTURERS WARRANTY. CHECK YOUR FEED WATER CHEMISTRY AND, IF
NECESSARY, CONSULT WITH YOUR LOCAL DEALER OR DISTRIBUTOR BEFORE START UP OF
THE SYSTEM.
OPERATING LIMITS
Design Temperature, °F / °C 77 / 25 Maximum Turbidity, NTU 1
Maximum Feed Temperature, °F / °C 85 / 29 Maximum Free Chlorine, ppm 0
Minimum Feed Temperature, °F / °C 40 / 4 Maximum TDS, ppm 500
Maximum Ambient Temperature, °F / °C 120 / 49 Maximum Hardness, gpg 1
Minimum Ambient Temperature, °F / °C 40 / 4 Maximum pH (continuous) 10
Maximum Feed Pressure, psi / bara90 / 6 ( LP–350,700);
70 / 5 (LP–500) Minimum pH (continuous) 4
Minimum Feed Pressure, psi / bara70 / 5 (LP–350,700);
45 / 3 (LP–500 Maximum pH (cleaning 30 minutes) 12
Maximum Operating Pressure, psi / bar 90 / 6 (LP–350,700);
100 / 7 (LP–500) Minimum pH (cleaning 30 minutes) 2
Maximum Feed Silt Density Index (SDI) < 1
A. System pressure is variable due to water conditions
HIGHER TDS AND/OR LOWER TEMPERATURES WILL REDUCE THE SYSTEM’S PRODUCTION.
DO NOT EXCEED THE MAXIMUM OPERATING PRESSURE.

SYSTEM SPECIFICATION CHART
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MODELS LP–350 LP–500 LP–700
DESIGN
Configuration
Single Pass
Single Pass
Single Pass
Feedwater Source (ppm)BTDS < 500 TDS < 500 TDS < 500
Standard Recovery Rate%
40
46
38
FLOW RATES
C
Permeate Flow (gpm / lpm)
0.24 / 0.91
0.35 / 1.31
0.49 / 1.85
Minimum Feed Flow (gpm / lpm) 0.66 / 2.50 0.76 / 2.88 1.33 / 5.03
Maximum feed Flow (gpm / lpm)
8.00 / 30.28
8.00 / 30.28
8.00 / 30.28
CONNECTIONS
Feed (in)
3/8 QC
3/8 QC
3/8 QC
Permeate (in) 3/8 QC 3/8 QC 3/8 QC
Concentrate (in)
3/8 QC
3/8 QC
3/8 QC
MEMBRANE
Membrane Per Vessel
1
1
1
Membrane Quantity 1 1 2
Membrane Size
3012
3012
3012
Nominal TDS Rejection % 98 98 98
VESSELS
Vessel Array 1 1 2 (Parallel)
Vessel Quantity
1
1
2
PUMP
Pump Included
N/A
Yes
N/A
Pump Type
N/A
Aquatec 5800
N/A
SYSTEM ELECTRICAL
Standard Voltage + Amp DrawDN/A
110V, 50/60Hz,
1PH 60 HZ 4A
N/A
SYSTEM DIMENSIONS
Approximate DimensionsE
L x W x H (in / cm)
12.00 x 17.00 x 32.00 /
30.48 X 43.18 X 81.28
12.00 x 17.00 x 32.00 /
30.48 X 43.18 X 81.28
12.00 x 17.00 x 32.00 /
30.48 X 43.18 X 81.28
Approximate Weight (lbs / kg)
35 / 15.87
41 / 18.60
38 / 17.24
SYSTEM DIMENSIONS WITH OPTIONAL 10” FILTER HOUSINGS
Approximate DimensionsE
L x W x H (in / cm) 12.00 x 17.00 x 22.00
/
30.48 X 43.18 X 55.80
12.00 x 17.00 x 22.00
/
30.48 X 43.18 X 55.80
12.00 x 17.00 x 22.00
/
30.48 X 43.18 X 55.80
Approximate Weight (lbs / kg) 30 / 13.60 36 / 16.30 33 / 14.90
Test Parameters: 500 TDS Filtered (5–micron), Dechlorinated, Municipal Feedwater, 65 psi / 4.50 bar Feed Pressure, 100 psi/ 6.8 bar Operating
Pressure, 77°F / 25°C, Recovery as stated, 7.0 pH. Data taken after 60 minutes of operation.
B. Low temperature and feedwater quality, such as high TDS levels will significantly affect the systems production capabilities and performance.
Computer projections must be run for individual applications which do not meet or exceed minimum and maximum operating limits for such conditions.
C. Product flow and maximum recovery rates are based on feedwater conditions as stated above. Do not exceed recommended permeate flow.
D. Varies with motor manufacturer.
E. Does not include operating space requirements.

COMPONENT IDENTIFICATION
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LP–350 SYSTEM

COMPONENT IDENTIFICATION
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LP–500 SYSTEM

COMPONENT IDENTIFICATION
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LP–700 SYSTEM

COMPONENT IDENTIFICATION
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ITEM
NUMBER
PART
NUMBER
DESCRIPTION MODEL
1200659 CARTRIDGE, CARBON BLOCK, 2.5" X 20", 10 MIC LP 350 – 700
2200626 CARTRIDGE, SEDIMENT, POLYPRO, 2.5" X 20", 5 MIC LP 350 – 700
3207295 HOUSING, FILTER, WHT/WHT, 2.5" X 20", SGL O-RING, NPR, 3/8" FNPT LP 350 – 700
4208438 HOUSING, MEMBRANE, 3012, WHT, ANGLE 3/8” FNPT, AXEON LP 350 – 700
5208802 MEMBRANE, TF, 3012, 500 GPD, DRY, AXEON LP 350 – 700
6211270 VALVE,SHUT OFF,FLOW THROUGH,WHITE, 3/8" QC,FLUXTEK LP 350, 700
7207442 PUMP BOOSTER, 5800, 1.0 GPM, 24 VAC 2AMP, AQUATEC LP 500
8 207917 TRANSFORMER, 110V 60HZ 24VAC, 4.0 AMP, TDC LP 500
9200772 RESTRICTOR, FIXED, 800 ML/MIN, AUTO FLUSH, 1/4" QC, AQUATEC LP 500
10 200962 VALVE, CHECK, ACETAL, 3/8" QC X 3/8" QC, JG LP 350 – 700
11 207974 VALVE, SOLENOID, 3/8" QC, 24V, INTERELEKTRIK LP 500
12 200771 SWITCH, TANK, PRESSURE, 20-40 PSI, 3/8" QC, AQUATEC LP 500
LP–700 WITH OPTIONAL 10” FILTER HOUSINGS
ITEM
NUMBER
PART
NUMBER
DESCRIPTION MODEL
13 210272, OPTION, RO, LP-700, HOUSING, FILTER, 10"
LP 350 – 700
14 200658 CARTRIDGE, BLOCK, CARBON, 2.5" X 10", 10 MIC, CBF-25-1010, AXEON
LP 350 – 700
15 200621 CARTRIDGE, DEPTH FILTER, POLYPROPYLENE, 2.5" X 10", 5 MIC, SDF-25-1005, AXEON
LP 350 – 700

COMPONENT IDENTIFICATION DESCRIPTION
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PRE–FILTRATION
LP–Series systems are supplied with a 5–micron sediment filter and a 10 micron carbon
block filter. Change the cartridge once a month or when a 10–15 psi differential exists
between the two pre–filter gauges.
FILTER HOUSINGS
The LP–Series comes with two housings one for the 5 micron sediment filter and the second
one is for the 10 micron carbon filter.
MEMBRANE
The TF–3012 RO membrane utilizes advanced manufacturing processes of the industry’s
leading film technology allows these elements to deliver consistent results that equipment
suppliers and water treatment dealers have come to rely on.
TRANSFORMER
Transforms incoming voltage to 24VAC to power R.O. motor/pump and system.
BOOSTER PUMP
The LP–500 uses an Aquatec 5800 pump to increase pressure when required.
NEVER RUN PUMP DRY. OPERATING PUMP W
ITHOUT SUFFICIENT FEED FLOW WILL
CAUSE DAMAGE OR FAILURE.
IF THE SYSTEM PRESSURE IS FLUCTUATING, TURN THE SYSTEM OFF AND ENSURE THAT
PROPER FEED WATER FLOW AND PRESSURE ARE BEING SUPPLIED TO THE SYSTEM.

COMPONENT IDENTIFICATION DESCRIPTION
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PRE–FILTER PRESSURE GAUGES (OPTIONAL)
These gauges measure the feed water pressure when it
enters and exits the pre-filter. A pressure differential of 10–
15 psi or more between the two pressure gauges indicates
that the pre-filters require replacement.
Note: A "FILTER IN" pressure gauge is not included with the system. Please
have a qualified person install this gauge.
EXAMPLE: If the inlet pressure is 60 psi,
the filter should be changed when the
outlet pressure is 50 psi or below.
(not included)

MEMBRANE INFORMATION
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The LP–Series Reverse Osmosis Systems are equipped with AXEON TF–Series Membrane Elements. General
membrane element performance characteristics are listed below.
MEMBRANE ELEMENT SPECIFICATIONS AND OPERATING LIMITS
TF–Series Membranes (Standard)
Membrane Type: Polyamide Thin–Film Composite pH Range, Short Term Cleaning (30 Min.): 2–11
Maximum Operating Temperature: 113°F (45°C) Maximum Feed Silt Density Index (SDI): 5
Maximum Operating Pressure: 150 psi (10 bar) Chlorine Tolerance: 0 ppm
pH Range, Continuous OperationF:2–11 Maximum Feed Flow Rate (gpm / lpm): 2.50 / 9.50
F. Maximum temperature for continuous operations above pH10 is 95°F (35°C).
Product Specifications
Part Number Description Applied Pressure
psi / bar
Permeate Flow Rate
gpd / lpd
Nominal Salt Rejection
(%)
208802 TF–3012–500 70.00 / 4.80 500.00 / 1892.71 98
Warranty Evaluation Test Conditions: Permeate flow and salt rejection based on the following test conditions–250 ppm, filtered and dechlorinated municipal tap
water, 77°F / 25°C, 15% recovery and the specified operating pressure. Minimum salt rejection is 96%. Permeate flows for warranty evaluation may vary +/–20%.
Maximum pressure drops at 13 psi / 0.9 bar.
Under certain conditions, the presence of free chlorine,
chloramines and other oxidizing agents will cause premature membrane failure. Since oxidation damage is not covered under warranty,
the manufacturer recommends removing all oxidizing agents by pretreatment prior to membrane exposure. Please contact the
manufacturer or your supplier for more information.
It is recommended that systems using these elements rinse the elements for 24 hours, prior to first use, to meet NSF/ANSI 58 Standard.
The first full tank of permeate must be discarded. Do not use this initial permeate for drinking water or food preparation. Keep elements
moist at all times after initial wetting. To prevent biological growth during prolonged system shutdowns, it is recommended that membrane
elements be immersed in M–100 preservative solution. Rinse out the preservative before use. For membrane warranty details, please
contact the manufacturer or your supplier for more information.
If operating limits and guidelines given in this product specification sheet are not strictly followed, the warranty will be null and void.
The customer is fully responsible for the effects of incompatible chemicals and lubricants on elements. Use of any such chemicals or
lubricants will void the warranty. These membranes may be subject to drinking water application restrictions in some countries: please
check the application status before use and sale. These elements have not been through the French approval process for use in potable
water. The use of this product in and of itself does not necessarily guarantee the removal of cysts and pathogens from water. Effective
cyst and pathogen reduction is dependent on the complete system design and on the operation and maintenance of the system.
No freedom from infringement of any patent owned by the manufacturer or others is to be inferred. Because use conditions and
applicable laws may differ from one location to another and may change with time, customer is responsible for determining whether
products and the information in this document are appropriate for customer’s use and for ensuring that customer’s workplace and disposal
practices are in compliance with applicable laws and other governmental enactments. The claims made may not have been approved
for use in all countries. The manufacturer assumes no obligation or liability for the information in this document. AXEON reserves the right
to update this information periodically for the purposes of quality and accuracy. NO WARRANTIES ARE GIVEN; ALL IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE A RE EXPRESSLY EXCLUDED.
Dimensions (in / mm)
A B C D E
11.75 /
298.45
0.75 /
19.05
0.67 /
17.02
2.90 /
73.66
10.50 /
266.70

MEMBRANE PERFORMANCE
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LP–Series Reverse Osmosis Systems are designed to produce up to 700 GPD at 77°F (nominal) of permeate
water per membrane at 98% rejection under the proper conditions. For example, the LP–700 produces 700
gallons per day of permeate water at the listed operating test conditions.
REJECTION
The amount of total dissolved solids (TDS) rejected by the membrane is expressed as a percentage. LP–Series
reverse osmosis systems are designed to reject up to 98% NaCl depending on feed water chemistry. A 98%
rejection rate means that 98% of total dissolved solids do not pass through the membrane. To calculate the
percent of rejection, use the following formula:
% REJECTION = FEED TDS - PERMEATE TDS
FEED TDS ×100
RECOVERY
The amount of permeate water recovered for use is expressed as a percentage. To calculate percent of
recovery, use the following formula:
% RECOVERY = PRODUCT WATER FLOW RATE
FEED WATER FLOW RATE ×100
ALL FLOW RATES MUST BE EXPRESSED IN THE SAME UNITS, TYPICALLY GALLONS PER
MINUTE (GPM).
Example:
430 TDS - 8.25 TDS
430 TDS ×100 = 98% REJECTION
Example:
5.55 GPM
8.55 GPM ×100 =65% RECOVERY

SYSTEM INSTALLATION
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MOUNTING
The free standing system should be bolted down or securely fastened in compliance with local regulation
standards. The system comes standard with a rubber bumper kit. Casters and levelers are available, but
optional.
PLUMBING
The membranes and high pressure pumps used on LP–500 systems require a continuous flow of water with a
minimum feed pressure of 45 psi.
Be certain that all of the components of the feedwater are soluble at the concentrations attained in the system.
1. Inspect the system for any damage that could have occurred during shipment. Although the system has
been individually inspected, complete a quick inspection of the fittings, tubing and other components.
2. Please provide a reasonable amount of space for installation and leave six inches of space below the
filter housings for ease of maintenance.
THE REVERSE OSMOSIS SYSTEM SHOULD BE INSTALLED IN AN AREA THAT IS NOT IN DIRECT
SUNLIGHT OR EXTREME COLD.
FEED WATER CONNECTION
Connect a 3/8” tube from an incoming water source to the 3/8” QC bulkhead labeled “FEED”. Best practice
to use a 1/2" tubing for the feed and reduce to 3/8" tubing near the incoming 3/8" feed bulkhead.
CONCENTRATE CONNECTION
Connect 3/8” tubing from the 3/8” QC bulkhead labeled “CONCENTRATE” to drain (waste). Run the
concentrate line to an open drain in a free and unrestricted manner (no backpressure).

SYSTEM INSTALLATION
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Note: The LP–500 system has been designed with an auto–flush restrictor. This restrictor automatically flushes
the reverse osmosis system for 30 seconds every time it starts up and 15 seconds once every hour when the
system is producing water.
HOLDING TANK CONNECTION
This system has been designed to operate together with an external bladder or atmospheric tank. Connect
3/8” tubing from the 3/8” QC bulkhead labeled “HOLDING TANK” to a permeate storage tank.
Note: The permeate water must be directed to drain for the first 30 minutes of use. Do not fill storage tank until
the system has been flushed for 30 minutes.
THE TANK HIGH PRESSURE SWITCH WILL SHUT THE SYSTEM OFF AUTOMATICALLY WHEN THE BLADDER
TANK IS FULL.
DO NOT OPERATE AT A PRESSURE EXCEEDING 100 PSI.
CONCENTRATE
FEED
*SYSTEM SHOWN WITH OPTIONAL PANEL.