SpectraPure MaxCap MC-RODI-90-10-MF User manual

2019 -10 - 01
INSTALLATION AND OPERATING MANUAL
WARNING
Please read carefully before proceeding with installation. Failure to
follow any attached instructions or operating parameters may lead
to the product’s failure and possible damage to property.
MaxCap Manual Flush
Reverse Osmosis/Deionization
Water Purification Systems
Single (90 GPD) and Dual (180 GPD) Membrane Models
MC-RODI-90-10-MF MC-RODI-180-10-MF

SpectraPure
®
SpectraPure
®
Inc. 480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
TABLE OF CONTENTS:
System Features ..................................................................................................... 3
System Specifications ............................................................................................ 4
General System Description ............................................................................ 5 - 6
Flow Restrictors and Test Strips .......................................................................... 6
Working With Push Fittings ................................................................................. 7
System Components - Front View ................................................................... 8
Top View of MaxCap 90 Manual Flush System ............................................... 9
Top View of MaxCap 180 Manual Flush System ............................................. 9
System Installation & Initialization ............................................................. 10-11
Install the Float Valve ......................................................................................... 11
Float Valve Illustration ....................................................................................... 12
How It Works ....................................................................................................... 12
The Manual Flush Valve ..................................................................................... 13
Metering and Diagnostics ................................................................................... 14
Using the Pressure Gauge .................................................................................. 15
Sediment Prefilter Replacement ........................................................................ 16
Carbon Block Filter Replacement ..................................................................... 17
MaxCap Super DI Replacement ......................................................................... 18
SilicaBuster Super DI Replacement ................................................................... 18
RO Membrane Replacement .............................................................................. 19
Testing the Quality of the Membrane ............................................................. 20
Membrane Production Calculation .................................................................. 21
Tips for Long Membrane Life ............................................................................. 22
Sanitizing Your RO System ................................................................................. 22
Storage .............................................................................................................. 23
Optional Accessories ........................................................................................... 23
System Troubleshooting Guide ................................................................... 24-25
Terms and Conditions .......................................................................................... 26
One Year Limited Warranty ............................................................................... 26
Replacement Parts ............................................................................................... 27
COPYRIGHT 2002-2019© BY SPECTRAPURE INC
ALL RIGHTS RESERVED
No part of this publication may be reproduced, stored in a retrieval system, or
transmitted in any form or by any means, electronic, mechanical, photocopying,
recording or otherwise without the prior written permission of SpectraPure Inc.

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Inc . Fax [phone] Fax us toll-free 1.877.527.7873
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®
Thank You for your purchase of a SpectraPure®System. With proper installation
and maintenance, this system will provide you with high quality water for
years to come. All SpectraPure®products are rigorously tested by us for
safety and reliability. However, SpectraPure®Inc. Assumes No Responsibility
for water damage due to leaks. It is the user’s responsibility to determine that
the system is leak-free. If you have any questions or concerns, please contact our
customer service department at 1.800.685.2783.
This MaxCap®RO/DI System comes complete with:
• Ultra-high rejection SpectraSelectPlus™ TFC Membrane
(2 membranes in 180 GPD system)
• 2:1 waste-to -product ratio produces 50% less waste water
(3:1 for hard water areas)
• Long- life high-efficiency 0.5 micron Sediment prefilter
• High-capacity 0.5 micron Carbon Block prefilter eliminates chlorine,
herbicides and other organic pollutants
• MaxCap®Extended Life Super DI Cartridge (DI-MC-10HC)
• SilicaBuster™ Extended Life Super DI Cartridge (DI-SB-10HC)
• Dual-probe TDS Meter to monitor pre/post membrane
• Dual -probe TDS Meter to monitor post-DI performance
• Manual Flush Valve for longer membrane life
• Automatic Shutoff Valve saves water
• Inline feedwater Ball Valve for manual system shutoff
• Float Valve for filling a reservoir
• Built-in pressure gauge indicates when to change prefilters
• Durable, no rust mounting bracket and clear filter housings
• 6 feet of feed, product and waste tubing included
• Housing wrench for easy filter removal
• Garden hose adapter for feed water hookup
• One year warranty
Warning: SpectraPuredoesnotrecommend
drinking deionized water.

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®
Inc. 480.894.5437 Call us toll-free 1.800.685.2783
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SYSTEM SPECIFICATIONS:
Sediment Prefilter 0.5 micron MicroTec™ sediment prefilter (SF-MT-0.5 -10)
Carbon Filter 0.5 micron carbon block prefilter (CF-0.5-10)
RO Membrane Type 90 GPD SpectraSelect Plus TFC Membrane
(Use 2 for 180 GPD Systems)
DI Cartridges MaxCap®Extended Life Super DI Cartridge (DI-MC-10HC)
SilicaBuster™ Extended Life Super DI Cartridge (DI-SB-10HC)
Rejection Rate Typical stabilized conductivity rejection 99%
Minimum conductivity rejection 98%
Input Water Pressure 60 psi (4.15 bar) line pressure*
Input Water Temp 77°F (25°C)
Recovery Rate 33% (i.e. 33% of the water will be collected as pure water)
Dimensions:
MaxCap MC-RODI-180-MF 20" W x 16" H x 7" D (Two Membranes)
MaxCap MC-RODI-90-MF 20" W x 16" H x 7" D (One Membrane)
Nominal Membrane Flow Rates @ 60 psi, 77° F, & 250 ppm TDS :
GPD Product Water Flow Rate Concentrate Flow Rate (2:1)
90 234 ml/min 468 ml/min
180 468 ml/min 936 ml/min
Permeate flow and TDS rejection is based on the following test conditions:
250 ppm softened tap water, 77° F (25° C), 33% recovery and 60 psi.
Higher TDS, harder tap water, higher temperature, greater recovery rate, or
lower operating pressure may contribute to reduced permeate flow and/or
lower TDS rejection.
Reverse Osmosis Operating Limits:
Operating Pressure* 40 – 80 psi (2.75 – 5.5 bar)
pH Range 2 –11
Maximum Temperature 113° F (45° C)
Maximum Turbidity 1.0 NTU
Maximum Silt Density Index 5.0 (based on 15 min. test time)
Free Chlorine Tolerance less than 0.1 ppm
Maximum Iron less than 0.1 ppm
Maximum Manganese less than 0.1 ppm
Maximum Hydrogen Sulfide 0 ppm
Langelier Saturation Index LSI must be negative
*Operating pressure less than 40 psi may require a booster pump:
Operating pressure greater than 80 psi may require a pressure regulator.

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GENERAL SYSTEM DESCRIPTION:
This SpectraPure®RODI System gives you a continuous supply of sparkling
clear water. The reliability with the SpectraPure®Water Treatment System is
greatly improved over other systems. Costly maintenance can be avoided,
providing high quality water at your fingertips.
The incoming feed water from a cold water source is directed through
BLACK tubing with an inline ball valve and is first passed through a sediment
prefilter. This filter is used to remove excessive turbidity, sand, dust, silt, etc.,
that would otherwise cause the carbon filter to quickly become fouled.
The next stage of filtration is the carbon block prefilter. This filter is used to
remove organics and chlorine from the feed water that can damage the
membrane. The next stage of the system is the RO membrane.
Household water pressure is used to force tap water through the
semipermeable RO membrane. The membrane only allows the purest of
water molecules to pass through it while over 98% of most inorganic salts,
all microorganisms and almost all high molecular weight organics in the
water
are rejected by the membrane and sent down the drain.
These RODI systems have two stages of Deionization that polish the RO
water to less than one ppm purity.
The fourth and fifth stage filters are our
MaxCap®Extended Life Super DI cartridge and our SilicaBuster™ Extended
Life Super DI cartridge.
The MaxCap®Extended Life Super DI is used as a high-capacity “roughing”
cartridge and is followed by our SilicaBuster™ Extended Life Super
DI. Typically, if the RO water has 25 ppm TDS (Total Dissolved Solids)
entering a SilicaBuster™ DI cartridge alone, it might process about 266
gallons of pure DI water. By placing a MaxCap®DI cartridge in front
of the SilicaBuster™ cartridge, 800 gallons of water will pass through
both cartridges before the MaxCap®DI is exhausted. The SilicaBuster™
DI cartridge will be only one-third exhausted. A second MaxCap®DI will
process another 800 gallons and the SilicaBuster™ DI cartridge will now
be two-thirds exhausted. Only after a third Max Cap®DI cartridge processes
another 800 gallons should the SilicaBuster™ DI cartridge finally become
fully exhausted.
This example illustrates that three MaxCap®Super DI cartridges plus the
original SilicaBuster Super DI cartridge will process 2400 gallons of pure DI
water. It would have taken as many as ten standard mixed-bed cartridges
to produce the same amount of pure DI water.
(continued on next page)

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The MaxCap®RODI system comes equipped with two Dual Inline TDS
monitors. The two TDS meters monitor every step in the purification
process. The IN probe of the left side meter shows the tap water TDS. The
OUT probe of the left-side meter shows the RO water TDS. The IN probe
of the right-side meter shows the TDS coming out of the MaxCap DI and
the OUT probe of the right-side meter shows the TDS of the final product
water (out of the SilicaBuster DI).
A pressure - operated Shutoff Valve and a Float Valve are provided for
convenient filling of a storage reservoir.
A Manual Flush Valve may be used to periodically rinse the accumulated
impurities and concentrated waste water from the surface of the RO
membrane to help increase the life of the membrane. If increased pressure
is needed or desired, use the BPHF-MF-115 Booster Pump Kit. This kit has
a 24VDC, 2.5A Power Supply.
(continued from previous page)
FLOW RESTRICTORS AND TEST STRIPS:
These systems are supplied with TWO Flow Restrictors (FR) - RED and
GREEN. The RED FR (pre-installed) produces a preset waste-to-product
ratio of 3:1 and the optional GREEN FR has a 2:1 ratio.
Two Test Strips are provided to determine the Total Hardness (this is NOT
TDS) of your tap water. To test: Dip the colored end into a small tap water
sample for 3 seconds. Remove and do not shake. Wait for 20 seconds and
then match with the closest color block on the back of the package. Color
is stable for 1 minute.
If the Total Hardness is 180 or greater, you should keep the RED FR installed.
If the Total Hardness is less than 180, you may replace the RED FR with
the GREEN FR (see “Working with Push Fittings”). Be sure to note the
orientation of the removed FR and install the new FR with the same
orientation. (Refer to Page 9 for location of Flow Restrictor.)
The RED FR has a waste-to-product ratio of 3:1, which will increase the
amount of water used, but also increase the lifetime of the RO membrane.
In hard water conditions, you may use the GREEN FR to save water, but
the RO membrane will not last as long, as it will plug up with hardness
much more quickly.

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WORKING WITH PUSH FITTINGS:
Push fittings are very reliable and convenient tubing connectors.
To remove the tubing from its push fitting:
1. Firmly depress and hold the push fitting collar down with your thumbnail.
2. While the push fitting collar is depressed, pull the tubing straight out
of the push fitting. Once the tubing is removed, release the collar.
To reinsert the tubing into its push fitting:
1. Moisten the O-ring seal inside the push fitting by dripping a few drops
of clean water into the fitting.
2. Grasp the tubing near the end, and insert the tubing into the push
fitting.
3. Push the tubing into the fitting until resistance is felt, approximately
1/2 inch (12.7 mm). The tubing is now resting on the O-ring seal
inside the fitting.
4. Firmly push the tubing approximately an additional 1/4 inch (6.35 mm)
further into the fitting to completely seat the line into the fitting and
past the O-ring seal.
5. Turn on the system water supply and check for leaks prior to further
use or testing. If a leak is observed, you may not have pushed the
tubing into the push fitting far enough to seal the tubing against the
O-ring. Turn off the system water supply and reseat the tubing as
described above.

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®
Inc. 480.894.5437 Call us toll-free 1.800.685.2783
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0.5 micron
Sediment Prefilter
(SF-MT-0.5 -10)
High-Capacity
SilicaBuster™
Extended Life
Super DI
(DI-SB-10HC)
0.5 micron
Carbon Block Filter
(CF-0.5-10)
High-Capacity
MaxCap®
Extended Life
Super DI
(DI-MC-10HC)
Connect
Tap
Water
Line
Here
SYSTEM COMPONENTS — FRONT VIEW
Dual-Probe TDS Meter #2
IN = DI-MC Water TDS
OUT = DI-SB Water TDS
Dual-Probe TDS Meter #1
IN = Tap Water TDS
OUT = RO Water TDS
TFC RO Membrane
inside Housing
(180 GPD system has 2
membranes and housings)
Pressure Gauge

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TOP VIEW — MAXCAP 90 MANUAL FLUSH
TOP VIEW — MAXCAP 180 MANUAL FLUSH
Flow Restrictor in this end of Red (or Green) TubingFlow Restrictor in this end of Red (or Green) Tubing
Flow Restrictor in this end of Red (or Green) Tubing
Flush Valve (Closed Position)
Open to Flush Membrane
Flush Valve (Closed Position)
Open to Flush Membrane
Flush Valve (Closed Position)
Open to Flush Membrane
Auto ShutOff Valve (ASO)
(below Flush Valve)
Auto ShutOff Valve (ASO)
(below Flush Valve)
Auto ShutOff Valve (ASO)
(below Flush Valve)
Connect Yellow
Drain Tubing Here
Connect Yellow
Drain Tubing Here
Connect Yellow
Drain Tubing Here

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®
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®
Inc. 480.894.5437 Call us toll-free 1.800.685.2783
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10
SYSTEM INSTALLATION & INITIALIZATION:
1. Most of the components of this system are plastic and are subject to damage by
ultraviolet light from the sun and other sources such as metal halide lighting.
2. Avoid installing this unit in an area where it may be subjected to bright light
or direct sunlight, as algae is more likely to thrive inside the clear filter housings
when exposed to bright light. The unit must be kept out of areas that are
subject to freezing temperatures.
3. High temperatures greater than 113° F (45° C) must be avoided. If the unit is
used outside, avoid putting the system in direct sunlight or connecting it to a
garden hose that may be exposed to sunlight.
4. Attach the black tap water tubing to the left side of the Sediment Filter Housing
(See page 8.).
5. Attach the yellow drain line to the “Y”- connector at the rear of the system. This
“Y” -connector already has a yellow and green tube attached to it. (See Page 9.)
6. Attach the blue product line to the rear port (after the “tee”) of the right-hand
DI housing.
7. Attach the garden hose adapter (connected to the black tubing) to your
cold water source. Never run hot water (greater than 113° F/45° C) through
the system.
8. Remove the two DI filter cartridges from the two right-hand filter housings.
Reconnect the two housings to their threaded caps. Hand tighten.
9. A provided ball valve can be located at a convenient place on the black tap
water line. Cut the black tubing in two and reconnect the two cut ends with
the ball valve.
10. Place the yellow concentrate (waste) tubing and the blue purified (product)
water tubing temporarily into a drain. Do not restrict flow from these lines.
11. Let both tubings run water down the drain for one hour.
12. Reinstall the two DI cartridges into the DI housings. Hand tighten.
13. There are two groups of red, white, and blue sensor wires. At the end of
the wires, you will find a white connector. Insert the connector into the
receptacle on the top of each TDS monitor. You can then use the Velcro on
the back to mount the meters to the front of the system or close by on a wall
for easier viewing.
Attach Blue Product
tubing here

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14. Open the cold water supply valve. The pressure should not exceed 80 psi.
15. Upon startup, air may be trapped in the DI cartridges (housing may not
appear full), this is a normal condition and it will not affect the operation of
the DI system. However, when you later install the Float Valve for automatic
operation, all air must be kept purged from the housings by slightly
unscrewing the housing(s) and letting the running water displace the air until
the housings are full of water.
16. Set the right-side meter to “OUT” and run the system until the right-side meter
reads zero. The water is now ready to use. You can set either meter to read
either probe at any time.
17. Close the cold water supply valve.
18. Finish the installation by directing or connecting the yellow line to a
permanent drain.
19. Install the included Float Valve onto a collection reservoir. See below.
20. Attach the blue line to the Float Valve.
21. Check the system to ensure that all fittings are tight and leak-free before leaving
the system unattended. (If anything is leaking, contact SpectraPure for assistance.)
22. It may take several days of normal operation for the membrane to reach its full
production rate.
INSTALL THE FLOAT VALVE:
1. Drill a 1/2" hole near the top of your reservoir.
NOTE: If you are installing the Float Valve onto an acrylic tank we recommend
using a new Fostner Bit to reduce the chance of cracking the acrylic.
2. (Refer to Diagram on Page 12) Remove the Compression Nut from the float
body.
3. Insert the 1/4" Blue Tubing into the 1/2" Compression Nut with the threads
towards the end of the tube.
4. Unscrew and remove the remaining nut from the float body.
5. Insert the float body and washer into the 1/2" hole and tighten the nut, which
securely tightens the float to the tank wall.
6. Push the Compression Nut towards the end of the tubing and screw the
Compression Nut back onto the float body.
7. To tighten, use one 1/2" wrench on the flats of the plastic threads and another
1/2" wrench on the Compression Nut.

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FLOAT VALVE ILLUSTRATION:
HOW IT WORKS:
The increasing water level raises the Float Valve in the reservoir and stops
the flow of water. Pressure builds up in the product line and ASO Valve
until the ASO Valve shuts off the flow of waste water to drain. This “OFF”
condition will be maintained until the reservoir needs more water and the
Float Valve drops, allowing both product and waste water to flow again.
NOTE: This configuration maintains house pressure in the prefilters,
membrane, and pressure gauge when in the “OFF” condition. Also, this
system WILL NOT WORK with any kind of “bladder tank” attached to the
product line.
An optional float kit can be used for filling an additional sump or reservoir.
Our Float Kit (SPFK) includes a Float Valve and 1/4" Union Tee.

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THE MANUAL FLUSH VALVE:
The Manual Flush Valve is located in parallel with the flow restrictor (see
page 9) and, when opened, provides a high-flow bypass of waste water
used to purge concentrated brine from the membrane housing and rapidly
flush any particulates from the membrane surface. This is especially useful
in hard water conditions. The valve can be turned ON for 30 seconds at
the start of a fill cycle and/or at the end of a fill cycle.
NOTE: Be sure to turn the flush valve back to the “closed” position before
making product water. You do not have to turn the system off to
change the position of the flush valve.
NORMAL POSITION (closed)
When the flush valve is in the “closed” position, the water flows through
the flow restrictor (located in the Red or Green tubing) which creates back
pressure in the membrane housing and forces the water through the RO
membrane. This is the normal position to make purified water.
FLUSH POSITION (open)
When the flush valve is in the “open” position, the unimpeded water flows
out of the membrane housing and directly down the waste water line.
This serves to rinse the accumulated impurities and concentrated waste
water from the surface of the RO membrane to help increase the life of
the membrane.

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®
Inc. 480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
14
METERING AND DIAGNOSTICS:
This SpectraPure purification system has been fully equipped with sufficient
instrumentation to make monitoring and troubleshooting an easy process.
The provided pressure gauge is used to determine the tap water pressure
and to evaluate the condition of the sediment and carbon prefilters. The
pressure will drop as the prefilters become clogged by sediment (turbidity)
from the tap water.
The digital TDS meter (left side) will provide a reliable means of evaluating
the efficiency of the RO membrane. This meter will indicate the tap water
conductivity (“IN”) and the RO water conductivity (“OUT”). The difference
between the two meter readings can be used to calculate the percentage
of rejection of the (TFC) RO membrane.
The Digital TDS meter (right side) will be used to determine the condition
of the two stages of the DI system. As the reading on the meter begin
to rise above zero, the operator will be alerted to the possibility that the
DI system may have deteriorated past the exhaustion point and that the
DI cartridge(s) may need to be replaced. (See page 18 for DI exhaustion
details.)
DM-1 METER Specifications:
Range 0-1999 PPM
Resolution 1PPM (1-999 PPM)
Accuracy 2%
Probe 0.25 inches
Power Source (2) 1.5V button batteries (A357 or equiv.)
Battery life Approx 1000 hours
For service or repair of these monitors, please send to:
HM DIGITAL, INC
5819 Uplander Way
Culver City, CA 90230

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USING THE PRESSURE GAUGE:
The pressure gauge is used to monitor the condition of the Sediment
and Carbon Prefilters. With the Sediment and Carbon filters removed, the
gauge will indicate the “actual” tap water input pressure. When the prefilters
are “new”, the pressure shown on the gauge will be slightly less than the
actual tap water pressure and as the filters age, the pressure will drop due
to the sedimentvv that will collect in the prefilters. When the pressure on
the gauge drops below 40 PSI or as the filters collect particulates and the
pressure drop is greater than 15% to 20% of the normal water pressure,
the prefilters are in need of replacement.
NOTE: When the pressure on the pressure gauge drops below the normal
readings; do not “assume” that the sediment filter is the only cause. In some
geographical areas where the input water contains a high percentage
of very small micron particulates, the carbon filter may become clogged
before the sediment filter. (The filters may look “new” but still cause the
water pressure to drop). Do not judge the condition of the prefilters by
their color, always use the pressure gauge to determine the condition of
the prefilters.

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SEDIMENT PREFILTER REPLACEMENT:
A Sediment Filter will usually last approx. 4-6 months, depending on the
quality of the tap water and quantity of water being produced. (The life
span of the filter is determined by the turbidity, iron content, organics,
and total particulate volume in your water source). The best way to
determine when your Sediment Prefilter needs replacement is to monitor
the Pressure Gauge. When you have a drop in pressure of15-20% below
your normal gauge pressure, replace the filter. To verify this, run water
through the system without the filter in its housing. If the pressure returns
to your normal house pressure without the filter, you will know the filter
you just took out was plugged up and causing the pressure drop.
**NOTE: A drop in the system’s production is, in most cases, an indication
that the sediment filter has become saturated with contaminants and
will need to be replaced. If you remove the sediment and the pressure
does not return to normal, the carbon filter may be plugged. If your water
contains a great deal of sediment or chlorine, the prefilters may require
more frequent changes to maintain adequate production rate and
extended membrane life.
Sediment Prefilter Replacement
Materials Required: Sediment prefilter (SF-MT-0.5-10),
Filter Wrench (WR-UNIV)
Procedure:
1. Turn off water supply to the system.
2. Using the provided filter housing wrench, remove the first housing on
the left. Unscrew it clockwise as viewed from the top.
3. Remove the old filter and discard.
4. Thoroughly wash the housing with a mixture of hot soapy water and a few
teaspoons of household bleach. Rinse well with clean hot water.
5. Insert the new prefilter into the housing, Screw the housing back onto
the assembly and hand-tighten only.
NOTE: Do not use filter wrench to tighten housings. Over-tight-
ening will damage housings and void your warranty.
6. Proceed with carbon block filter replacement.

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CARBON BLOCK FILTER REPLACEMENT:
A Carbon Filter will usually last 4-6 months, depending on the chlorine
(or chloramine) content of your tap water and quantity of water being
produced. The best way to determine when your Carbon Block Prefilter
needs to be replaced is to use a chlorine test kit.
Any chlorine level above 0.1 ppm will cause damage to the membrane
and indicates that the carbon block filter must be changed. To test for
chlorine breakthrough, collect a 10 ml. sample of the concentrate from
the yellow tubing and test the chlorine concentration using test kit TK-CL-
10-KIT. If the chlorine concentration is above 0.1 ppm, replace the carbon
prefilter.
NOTE: A drop in the system’s production is, in most cases, an indication
that the sediment filter has become saturated with contaminants,
but a carbon filter can also decrease production if it’s covered with
extremely fine sediment. If the carbon becomes plugged with
sediment, it will no longer be able to remove chlorine.
Carbon Block Filter Replacement
Materials Required: Carbon Block prefilter (CF-0.5-10), Filter Wrench,
Chlorine Test Kit (TK-CL-10-KIT)
Procedure:
1. Turn off water supply to the system.
2. Using the provided filter housing wrench, remove the second housing
from the left. Unscrew it clockwise as viewed from the top.
3. Remove the old filter and discard.
4. Thoroughly wash the housing with a mixture of hot soapy water and
a few teaspoons of household bleach. Rinse well with clean hot water.
5. Insert the new carbon block filter into the housing, Screw the housing
back onto the assembly and hand-tighten only.
NOTE: Do not use filter wrench to tighten housings. Over-tightening
will damage housings and void your warranty.
6. Turn on system water supply and check for leaks.

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Inc. 480.894.5437 Call us toll-free 1.800.685.2783
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MAXCAP SUPER DI MAINTENANCE AND REPLACEMENT:
1. When the reading on the right-hand TDS meter (set to “IN”) displays 50% of
the reading on the left-hand TDS meter (set to “OUT”), it is time to replace
the MaxCap® Extended Life Super DI cartridge (DI-MC-10HC).
2. Turn the system off and remove the cartridge housing by rotating it counter-
clockwise until it is free of the threaded head on the bracket.
3. Make sure the DI cartridge is installed in the correct direction as marked on
the cartridge shell and be sure that the top seal is securely attached to the
top of the cartridge.
4. Tighten the cartridge housing by rotating it clockwise and hand tighten.
5. Turn on system and check for leaks.
SILICABUSTER SUPER DI MAINTENANCE AND REPLACEMENT:
1. When the reading on the right-hand TDS meter (set to “OUT”) displays
“001”, it is time to replace the SilicaBuster ™ Extended Life Super DI cartridge
(DI-SB-10HC).
2. Turn the system off and remove the cartridge housing by rotating it counter-
clockwise until it is free of the threaded head on the bracket.
3. Make sure the DI cartridge is installed in the correct direction as marked on
the cartridge shell and be sure that the top seal is securely attached to the
top of the cartridge.
4. Tighten the cartridge housing by rotating it clockwise and hand tighten.
5. Turn on system and check for leaks.
Install DI
cartridge
with this
end up.
Make sure that the
Black seal is seated in
the proper position.

SpectraPure
®
Inc . Fax [phone] Fax us toll-free 1.877.527.7873
[email protected] www.spectrapure.com 19
SpectraPure
®
RO MEMBRANE REPLACEMENT:
1. Turn off the water supply to the RO system. Place the system where the
membrane housing(s) can be easily accessed.
2. Remove the black tubing from the membrane feed push fitting by
depressing the collar on the fitting with your thumb and pulling the
tubing from the push fitting. You should not have to remove the blue
and yellow tubes.
3. Lift the membrane housing from the retention clips and unscrew the
membrane housing cap. This may require two people.
4. Use a pair of pliers to grasp the membrane stem and pull the membrane
from the housing.
5. Remove the black housing O-ring. Wash the empty housing with soapy
water. Rinse thoroughly with hot, clean water.
6. Insert the new membrane into the housing, with the double O-ring
end first. The o-rings and tube must fit into the recess at the bottom
of the membrane housing. When the membrane is aligned with the
recess, firmly push the membrane into the recess until it bottoms out.
7. Place the black housing O-ring on the housing rim and carefully screw
the lid back on to the base. Hand-tighten.
8. Reconnect the black tubing to the membrane feed push fitting.
9. If you have a dual-membrane system (180 GPD), perform steps 2 thru 8
on the second membrane.
10. Open the Flush Valve and allow the system to flush for several minutes
to remove any loose particles.
11. Close the Flush Valve and turn on the water supply to the system.
12. Check for leaks.
Proper Orientation
of New Membrane in
Relation to Housing

SpectraPure
®
SpectraPure
®
Inc. 480.894.5437 Call us toll-free 1.800.685.2783
2167 East Fifth St, Tempe, Arizona 85281
20
TESTING THE QUALITY OF THE MEMBRANE:
The performance of a reverse osmosis membrane is measured by its
ability to reject salts or TDS (Total Dissolved Solids). It is expressed as the
percentage of the feedwater TDS that has been removed in the permeate
(product) water. This is referred to as Percent Rejection.
NOTE: All water sources are different and are subject to changes in
conductivity from season to season which could affect the TDS
reading depending on the time of the year. We recommend that
you test the quality of the membrane once every 6 months.
General Procedure:
1. Set Meter #1 (left side meter) to the “IN” position to measure the tap
water TDS. (Call it X)
2. Run the system for 15 -20 minutes.
3. Set Meter #1 to the “OUT” position to measure the TDS of the permeate
(RO) water. (Call it Y).
4. Subtract RO water TDS from tap water TDS. (X - Y)
5. Divide this quantity by tap water TDS. (X - Y) ÷ X
6. Rejection = [(X - Y) ÷ X ] ×100
Rejection of the RO Membrane Calculation Example
7. Tap water TDS = 150 ppm (X)
8. RO water TDS = 15 ppm (Y)
9. X - Y = 135 ppm
10. (X - Y) ÷ X = 135 ÷ 150 = 0.90
11. Rejection = [ ( X - Y) ÷ X ] ×100 = 0.90 ×100 = 90%
NOTE: Rejection rates less than 95% may indicate that the membrane
should be replaced.
TDS Meter set to the “IN” position.
Slide the switch to the right for
the “OUT” position.