CB Tech WATER GUARDIAN MPADC User manual

USER GUIDE
WATER GUARDIAN

Index

Index
About the Water Guardian
Water Guardian Features
Before You Begin
Water Guardian Drinking Water System
Specications
Inspect Your Drinking Water System
Connect The Hose To The Housing
Connect The Hose And Diverter Valve To The Faucet
Prepare Your System For Use
Operation
Maintenance
•Regarding Filter Capacity
•Removing The Old Filter Cartridge
•Installing The New Filter Cartridge
Flushing / Disinfecting The System
Warranty
Contaminant Reduction Performance
•NSF/ANSI 42 - Aesthetic Effects
•NSF/ANSI 53 - Health Effects
• Standard 401 Incidental Contaminants
/Emerging Compounds
Troubleshooting
Frequently Asked Questions
Water Guardian Accessories
2
2
3
4
4
5
5
5
7
8
8
8
9
9
10
11
12
12
12
14
15
17
20

Water Guardian User Guide
About The Water Guardian Drinking Water System
• The CB Tech Water Guardian Drinking Water System (Model# MPADC)
is designed for use on the countertop next to the sink. It connects to the
existing faucet with a diverter valve that allows free selection between
ltered and unltered water.
• The Water Guardian includes accessories and ttings required for
installation.
• If installation or operation assistance is required, please contact your
Dealer.
Water Guardian Features
• Easy and convenient to use; provides delicious, clear, healthier drinking
water whenever you need it.
• Better-tasting beverages - coffee, tea, juices, and drinks of all kinds.
• Use for food preparation, improving the taste of fruits and vegetables.
• Highest quality water for cooking - better pasta, sauces, soups, etc.
• Your pets will love it too!
• Guaranteed quality backed by an outstanding customer satisfaction
guarantee and warranty.
• Cost-effective solution to meet your budget and replaces costly
bottled water
• Attaches easily to your faucet without tools.
• Reliable protection for all of your family’s drinking water needs.
2

3
Before You Begin
CB Tech Drinking Water Systems (DWS) have been extensively tested and
certied by NSF International to provide the highest level of assurance
that the device will perform as claimed. Please read this manual before
proceeding with the installation and use of your system. Installation,
operation, and maintenance requirements are essential to the performance
of your system – failure to follow any instructions or operating parameters
contained herein may lead to product damage or product failure.
• Replacement lters can be purchased from the Dealer where the Water
Guardian was originally purchased.
• Actual lter life depends on the amount of water used and the level of
impurities in the water. See section Regarding Filter Capacity (Pg 8) for
additional details.
• The Water Guardian is not intended for use with microbiologically
unsafe water or non-municipally-treated water. Systems certied for
cyst reduction may be used on disinfected waters that may contain
lterable cysts. See section Frequently Asked Questions (Pg 17) for
additional details.
• Do not allow water to freeze in the system. If the system is exposed to
freezing temperatures, drain water from the system and remove the
lter. Allow the lter to thaw before replacing and reusing.
• Do not allow water to sit in the system for extended periods of time
(e.g., 10 days or more) without use. See section Flushing / Disinfecting
The System (Pg 10) for additional details.
• To dispose of the used lter, remove it from the housing and place
in normal refuse. Filters disposed in a normal landll will not release
any chemical contaminants and may continue to adsorb additional
contaminants in the landll.
• Check for compliance with any state or local laws and regulations
before use.

Specications
4
Model Name: Water Guardian (MPADC)
Approximate Filter Capacity: 750 Gallons
Replacement Filter Type: CBTAD
Approximate Flow Rate: 0.75 gpm @60 psi
House Composition: Polypropylene
Rubber Items: Silicone
Outlet: 1/4” stem
Inlet: 3/8” stem
Working Pressure Range: 30 psi (2.1 kg/cm2)
to 100 psi (7.0 kg/cm2)
Operating Temperature Range: 32oF (0oC)
to 100oF (38oC)
- for cold water use only
Particle Retention Size: 0.5 micron (sub-micron)
Certied By: NSF International
Installation
Water Guardian Drinking Water System
1. Housing Top (MCL-AD)
2. Filter Cartridge (CBTAD)
3. Black Gasket (MC357)
4. Housing Bottom (MCB-AD)
5. Hose and Diverter Valve
(MC6400)
6. Hand Tool (MC008)
2
3
4
1
65

5
Installation
Inspect Your Drinking Water System
1. Inspect your DWS to conrm that it has been received in good condition
and that all parts are included.
2. Determine a countertop location for system placement, factoring in
distance to the faucet for diverter valve and hose connection.
3. Inspect the system housing to conrm that the housing top and bottom
are securely connected.
a. With the system sitting upright, slide the hand tool over the top so
that the ridges on the tool t into the grooves on the housing top.
b. While holding the system base in place, rmly turn the hand tool
clockwise to tighten the housing top.
Connect The Hose To The Housing
1. On the diverter valve and hose, locate the
two stems at the end of the hose opposite the
diverter valve. Identify the large stem (Inlet
Stem) and small stem (Outlet Stem).
2. On the DWS, locate the two ports on the bottom rear of the system housing.
Identify the lower, large port (Inlet Port) and upper, small port (Outlet Port).
3. Insert the Inlet Stem into the Inlet Port by slowly pushing the stem straight
into the port as far as possible. Conrm the connection by pushing the
stem in again.
4. Insert the Outlet Stem into the Outlet Port by slowly pushing the stem
straight into the port as far as possible. Conrm the connection by
pushing the stem in again.
Connect The Hose And Diverter Valve To The Faucet
1. Remove the aerator or screen (if present) from the end of the faucet. If
facing the open end of the spout, rotate the aerator counter-clockwise
to loosen and remove.

6
2. Attach the diverter valve directly to the faucet
spout. If the threads of the diverter valve do not
match the threads of the faucet, use one of the
included faucet adapters to connect the diverter
valve and faucet. If facing the open end of the
spout, rotate the diverter valve and/or adapter
clockwise to tighten. NOTE: When using a faucet
adapter, the rubber washer in the adapter always
faces up toward the faucet.
a. If Your Faucet Has an Outside Thread (male
connector): For many faucets with an outside
thread, the diverter valve can attach directly
to the faucet. If the diverter valve does
not attach to the faucet, attach the inside
thread (female connector) adapter, part #
MC106 or MC105, to the faucet, and then
attach the diverter valve to the adapter.
b. If Your Faucet Has an Inside Thread (female
connector): The diverter valve cannot
directly connect to a faucet with a female
connector. Attach the outside thread (male
connector) adapter, part# MC108, to the
faucet and then attach the diverter valve to
the adapter.
c. If Your Faucet Requires More Room for the
Diverter Valve Connection: Some faucets,
particularly sprayer hose faucets, require
additional room for the diverter valve connection. If this applies,
attach the long adapter, part# MC257, to the opening of the
faucet spout/sprayer, and then attach the diverter valve to the
adapter. The DWS may need to be repositioned on the sink to allow
enough room for sprayer faucet use.
d. If the Adapters Do Not Fit Your Faucet: Although the adapters
included with your DWS allow connections with many standard
faucets, they do not cover every type of available faucet connection.
If none of the adapters allow the diverter valve to connect to your
Diverter Valve Attachment
with adapter
Diverter Valve
Attachment
existing
faucet
bypass
lever
hose
diverter
valve
swivel
attachment
ring
*MC700 Adapters
Many installations do not
require an adapter
*MC106
*MC108
*MC257
*MC105

faucet, please contact your Dealer to request either part# MC109 or
part# MC719 as possible adapter solutions. NOTE: When connected
properly, the hose from the diverter valve should lead toward the
back of the faucet and sink.
3. The diverter valve features a bypass lever with a button on the left and
right sides of the diverter valve. Press the left button to bypass the DWS
and select the unltered water spout (larger opening). Turn on your
faucet to let unltered water ow out of the diverter valve and to make
sure that the diverter valve is properly connected.
4. Turn off the faucet.
1. Using a paper towel or cloth, dry off all connections and the DWS housing.
2. Make sure that all connections are tightly secured.
3. Remove any air from the system.
a. Turn the DWS housing upside down, and then turn on the faucet.
b. Press the right button on the diverter valve to select the ltered
water spout. The water will ow through the DWS and emerge from
the smaller opening on the diverter valve.
c. Allow water to ow through the DWS and ltered water spout for
one minute.
d. Press the left button to select the unltered water spout, and then
turn off the faucet.
4. Turn the DWS right side up and place it on the counter.
5. Remove any loose carbon from the system.
a. Turn on the faucet and press the right button on the diverter valve
to select the ltered water spout.
b. Allow water to ow through the DWS and ltered water spout for 30
minutes. This will purge any loose carbon from the system.
7
Prepare Your System For Use

8
Operation
Maintenance
1. For unltered water, press the left button on the diverter valve. Water
from the faucet will emerge from the unltered water spout.
2. For ltered water, press the right button on the diverter valve. Water
from the faucet will ow through the DWS before emerging from the
ltered water spout.
Regarding Filter Capacity
1. Exact lter capacity varies in proportion to the amount of water used and
the level of impurities in the water being processed. For contaminants
reduced through physiochemical adsorption, the lter capacity is
750 gallons. For contaminants reduced through mechanical ltration,
capacity claims are inapplicable due to broad variations in the quality
and quantity of physical matter in the drinking water. Excessive physical
matter will cause the DWS to clog, diminishing ow rate but reducing
the contaminants from the resultant water stream.
2. For optimum performance and to maintain the Manufacturer’s
warranty against defects on your system housing, it is essential that the
lter be replaced when the rst of the following occurs:
a. Annually
b. When the system is near or has reached its rated capacity
c. When the ow rate diminishes
d. When the lter becomes saturated with bad tastes and/or odors.
c. Press the left button to select the unltered water spout, and then
turn off the faucet.
6. Check all connections to make sure that there are no leaks.
7. Congratulations! Your system is now ready for use!

9
Removing The Old Filter Cartridge
1. Before opening the DWS housing, place a pan or basin beneath the
housing.
2. With the faucet off, press the right button on the diverter valve to select
the ltered water spout and ush water out of the DWS.
3. When the ow of water stops, press the left button
on the diverter valve to stop the ltered water
spout.
4. With the system sitting upright, slide the hand tool
over the top so that the ridges on the tool t into
the grooves on the housing top.
5. Hold the base steady and use the hand tool to
turn the DWS counter-clockwise to loosen. Once
the top is loose enough, you can complete
rotating it counter-clockwise by hand.
6. Lift the housing top off of the base, leaving the
black gasket on the bottom of the base.
7. Remove the old lter cartridge by pulling it upward
and slightly twisting until it is released from the base.
8. Dispose of the old lter in your waste container.
9. Rinse out the inside of the system housing, hand
washing if necessary.
Installing The New Filter Cartridge
1. If you have not done so already, remove the
plastic wrapper and instruction wrap from around
the new lter cartridge.
2. Insert the new lter in the center port of the
housing base, twisting slightly. Push straight down
on the lter to ensure that it is rmly in place.
3. Place the housing top over the lter and back onto the base. Turn it
clockwise to tighten. If necessary, use the hand tool to tighten the
housing top onto the base.
4. Proceed to section Prepare Your System For Use (Pg 7) to complete the
installation.

10
Warranty
CB Tech recommends that you not allow water to sit in the system for
extended periods of time without use. If a system is left unused for more than
10 days, it may need to be ushed / disinfected before resuming normal use.
1. Remove the lter cartridge by following the directions in section
Removing The Old Filter Cartridge (Pg 9).
2. Add 5 to 7 drops of bleach to the inside of the system housing.
3. Reconnect the top of the housing without a replacement lter cartridge
installed.
4. Turn the DWS housing upside down, and then turn on the faucet.
5. Press the right button on the diverter valve to select the ltered water
spout, and allow the system to ll up with the water/bleach solution.
6. Once water begins to ow out of the diverter valve, press the left button
to stop the ltered water spout, and turn off the faucet.
7. Turn the DWS housing right side up, and let the system soak for at least
30 minutes.
8. With the faucet off, select the ltered water spout on the diverter valve
to ush the water/bleach solution out of the system.
9. When the ow of water stops, open, clean, and rinse out the inside of
the system housing.
10. Follow the directions in section Installing The New Filter Cartridge (Pg 9).
Flushing / Disinfecting The System

11
Warranty
CB Tech Warranty: CB Tech warrants to the original retail customer its DWS
and components to be free of defects in material and workmanship for use
under normal care.
The capacity of the lter cartridge depends upon the amount of impurities
in the water to be processed.
Except as otherwise expressly provided above, CB Tech makes no warranties,
express or implied, arising by law or otherwise, including without limitation
the implied warranties of merchantability and tness for a particular
purpose, to any person. This limited warranty may not be altered, varied,
or extended except by a written instrument executed by CB Tech. The
remedy of repair or replacement as provided under this limited warranty
is exclusive. In no event shall CB Tech be liable for any consequential or
incidental damages to any person whether occasioned by negligence of
the manufacturer, including without limitation damages of loss of use, cost
of substitution, property damage, or other monetary loss.
Warranty is valid only if the DWS is operated within conditions listed herein.
The warranty begins from the date of purchase.
Flushing / Disinfecting The System

12
Substance Percent
Reduction**
Inuent challenge concentration
(mg/L unless specied)
Maximum permissible
product water concentration
(mg/L unless specied)
Contaminant Reduction
Performance
NSF/ANSI 42 - Aesthetic Effects
The Water Guardian is NSF-certied to reduce a broad array of
contaminants of aesthetic and health concern. The following
are contaminants treated by the Water Guardian.
CHLORAMINE as Aesthetic Effect (As Monochloramine) >97% 3.0 mg/L +/- 10% 0.5 mg/L
CHLORINE as Aesthetic Effect 99% 2.0 mg/L +/- 10% > or = 50%
PARTICULATE, (Nominal Particulate Reduction, Class I,
Particles 0.5 TO <1 μm
Class I > 99% At Least 10,000 particles/mL > or = 85%
Substance Percent
Reduction**
Inuent challenge concentration
(mg/L unless specied)
Maximum permissible
product water concentration
(mg/L unless specied)
NSF/ANSI 53 - Health Effects
ALACHLOR* >98% 0.050 0.001
ASBESTOS >99.9% 107to 108 bers/L; bers greater
than 10 micrometers in length
99% reduction
requirement
ATRAZINE* >97% 0.100 0.003
BENZENE* >99% 0.081 0.001
BROMODICHLOROMETHANE (TTHM)* >99.8% 0.300 0.015
BROMOFORM (TTHM)* >99.8% 0.300 0.015
CARBOFURAN (Furadan)* >99% 0.19 0.001
CARBON TETRACHLORIDE* 98% 0.078 0.0018
CHLORDANE >99.5% 0.04 +/-10% 0.002
CHLOROBENZENE (Monochlorobenzene)* >99% 0.077 0.001
CHLOROPICRIN* 99% 0.015 0.0002
CHLOROFORM (TTHM)* (surrogate chemical) >99.8% 0.300 0.015
Cryptosporidium (CYST) 99.95% minimum 50,000/L
99.95% reduction
requirement
CYST (Giardia; Cryptosporidium; Entamoeba; Toxoplasma) 99.95% minimum 50,000/L
99.95% reduction
requirement
2, 4-D* 98% 0.110 0.0017
DBCP (see Dibromochloropropane)* >99% 0.052 0.00002
1,2-DCA (see 1,2-DICHLOROETHANE)* 95% 0.088 0.0048
1,1-DCE (see 1,1-DICHLOROETHYLENE)* >99% 0.083 0.001
DIBROMOCHLOROMETHANE (TTHM; Chlorodibromomethane)* >99.8% 0.300 0.015
DIBROMOCHLOROPROPANE (DBCP)* >99% 0.052 0.00002
o-DICHLOROBENZENE (1,2 Dichlorobenzene)* >99% 0.080 0.001
p-DICHLOROBENZENE (para-Dichlorobenzene)* >98% 0.040 0.001
1,2-DICHLOROETHANE (1,2-DCA)* 95% 0.088 0.0048
1,1-DICHLOROETHYLENE (1,1-DCE)* >99% 0.083 0.001
CIS-1,2-DICHLOROETHYLENE* >99% 0.170 0.0005
TRANS-1,2- DICHLOROETHYLENE* >99% 0.086 0.001
1,2-DICHLOROPROPANE (Propylene Dichloride)* >99% 0.080 0.001
CIS-1,3- DICHLOROPROPYLENE* >99% 0.079 0.001

Contaminant Reduction
Performance
13
Substance Percent
Reduction**
Inuent challenge concentration
(mg/L unless specied)
Maximum permissible
product water concentration
(mg/L unless specied)
DINOSEB* 99% 0.170 0.0002
EDB (see ETHYLENE DIBROMIDE)* >99% 0.044 0.00002
ENDRIN* 99% 0.053 0.00059
Entamoeba (see CYSTS) 99.95% minimum 50,000/L
99.95% reduction
requirement
ETHYLBENZENE* >99% 0.088 0.001
ETHYLENE DIBROMIDE (EDB)* >99% 0.044 0.00002
Furadan (see CARBOFURAN)* >99% 0.19 0.001
Giardia Lamblia (see CYST) >99.95% minimum 50,000/L
99.95% reduction
requirement
HALOACETONITRILES (HAN)*
BROMOCHLOROACETONITRILE 98% 0.022 0.0005
DIBROMOACETONITRILE 98% 0.024 0.0006
DICHLOROACETONITRILE 98% 0.0096 0.0002
TRICHLOROACETONITRILE 98% 0.015 0.0003
HALOKETONES (HK):*
1,1-DICHLORO-2-PROPANONE 99% 0.0072 0.0001
1,1,1-TRICHLORO-2-PROPANONE 96% 0.0082 0.0003
HEPTACHLOR* >99% 0.25 0.00001
HEPTACHLOR EPOXIDE* 98% 0.0107 0.0002
HEXACHLOROBUTADIENE (Perchlorobutadiene)* >98% 0.044 0.001
HEXACHLOROCYCLOPENTADIENE* >99% 0.060 0.000002
LEAD (pH 6.5) >99.3% 0.15 +/- 10% 0.010
LEAD (pH 8.5) >99.3% 0.15 +/- 10% 0.010
LINDANE* >99% 0.055 0.00001
MERCURY (pH 6.5) >99% 0.006 +/- 10% 0.002
MERCURY (pH 8.5) >99% 0.006 +/- 10% 0.002
METHOXYCHLOR* >99% 0.050 0.0001
Methylbenzene (see TOLUENE)* >99% 0.078 0.001
Monochlorobenzene (see CHLOROBENZENE)* >99% 0.077 0.001
MTBE (methyl tert-butyl ether) >96.6% 0.015 +/- 20% 0.005
POLYCHLORINATED BIPHENYLS (PCBs , Aroclor 1260) >99.9% 0.01 +/- 10% 0.0005
PCE (see TETRACHLOROETHYLENE)* >99% 0.081 0.001
PENTACHLOROPHENOL* >99% 0.096 0.001
Perchlorobutadiene (see HEXACHLOROBUTADIENE)* >98% 0.044 0.001
Propylene Dichloride (see 1,2 -DICHLOROPROPANE)* >99% 0.080 0.001
RADON >94.9% 4000 ± 1000 pCi/L 300 pCi/L
SIMAZINE* >97% 0.120 0.004
Silvex (see 2,4,5-TP)* 99% 0.270 0.0016
STYRENE (Vinylbenzene)* >99% 0.150 0.0005
1,1,1-TCA (see 1,1,1 - TRICHLOROETHANE)* 95% 0.084 0.0046
TCE (see TRICHLOROETHYLENE)* >99% 0.180 0.0010
1,1,2,2- TETRACHLOROETHANE* >99% 0.081 0.001
TETRACHLOROETHYLENE* >99% 0.081 0.001
TOLUENE (Methylbenzene)* >99% 0.078 0.001
TOXAPHENE >92.9% 0.015 +/- 10% 0.003
Toxoplasma (see CYSTS) 99.95% minimum 50,000/L
99.95% reduction
requirement
2,4,5-TP (Silvex)* 99% 0.270 0.0016
TRIBROMOACETIC ACID* 0.042 0.001
1,2,4 TRICHLOROBENZENE (Unsymtrichlorobenzene)* >99% 0.160 0.0005
1,1,1-TRICHLOROETHANE (1,1,1-TCA)* 95% 0.084 0.0046
1,1,2-TRICHLOROETHANE* >99% 0.150 0.0005
TRICHLOROETHYLENE (TCE)* >99% 0.180 0.0010
TRIHALOMETHANES (TTHM) (Chloroform; Bromoform;
Bromodichloromethane; Dibromochloromethane)
>99.8% 0.300 0.015
TURBIDITY >99% 11 +/- 1 NTU 0.5 NTU
Unsym-Trichlorobenzene (see 1,2,4-TRICHLOROBENZENE)* >99% 0.160 0.0005
Vinylbenzene (see STYRENE)* >99% 0.150 0.0005
XYLENES (TOTAL)* >99% 0.070 0.001

14
Substance Percent
Reduction**
Inuent challenge concentration
(mg/L unless specied)
Maximum permissible
product water concentration
(mg/L unless specied)
Standard 401 Incidental Contaminants / Emerging Compounds
Group I
Atenolol >95.2% 200 ± 20% 0.00003 mg/L
Carbamazepine >98.3% 1400 ± 20% 0.0002 mg/L
DEET >95.5% 1401 ± 20% 0.0002 mg/L
Linuron >96.2% 140 ± 20% 0.00002 mg/L
Meprobamate >94.9% 400 ± 20% 0.00006 mg/L
Metolachlor >98.5% 1400 ± 20% 0.0002 mg/L
Trimethoprim >96.2% 140 ± 20% 0.00002 mg/L
Group II
TCEP >97.9% 5000 ± 20% 0.0007 mg/L
TCPP 97.8% 5000 ± 20% 0.0007 mg/L
Group III
Bisphenol A 99% 2000 ± 20% 0.0003 mg/L
Estrone >96.4% 140 ± 20% 0.00002 mg/L
Ibuprofen >95.2% 400 ± 20% 0.00006 mg/L
Naproxen >96.7% 140 ± 20% 0.00002 mg/L
Nonyl phenol >97.5% 1400 ± 20% 0.0002 mg/L
Phenytoin >95.2% 200 ± 20% 0.00003 mg/L
Footnotes
*Chloroform was used as a surrogate for claims of reduction of Volatile Organic Chemicals (VOC).
CB Tech Systems tested at >99.8% actual reduction of Chloroform. Percent reduction shown herein
reects the allowable claims for VOCs as per tables in the Standard.**Percent reduction reects actual
performance of CB Tech product as specically tested (at 200% of capacity). Percent reduction shown
for VOCs reects the allowable claims for Volatile Organic Chemicals/Compounds as per Tables.
Chloroform was used as a surrogate for VOC reduction claims: the CB Tech Systems’ actual reduction
rate of Chloroform was >99.8% as tested (at 200% of capacity). ***NSF Standard 401 has been deemed
as “incidental contaminants / emerging compounds”. Incidental contaminants are those compounds
that have been detected in drinking water suppliers at trace levels. While occurring at only trace levels
these compounds can affect the public acceptance/perception of drinking water quality.
1. Do not use with water that is microbiologically unsafe or with water of unknown quality without
adequate disinfection before or after the unit. Systems certied for cyst reduction may be used on
disinfected waters that may contain lterable cysts.
2. CB Tech Drinking Water Systems have been certied, as indicated, by NSF International for
compliance to NSF/ANSI Standard Nos. 42, 53 & 401.
3. The CB Tech Drinking Water Systems have been certied by the State of California Department of
Public Health for the reduction of specic contaminants listed herein.
4. Chloroform was used as a surrogate for claims of reduction of VOCs. CB Tech Systems tested at
>99.8% actual reduction of Chloroform. Percent reduction shown herein reects the allowable
claims for VOCs as per tables in the Standard.
5. Do not use with water that is microbiologically unsafe or of unknown quality without adequate
disinfection before or after the system. Systems certied for cyst reduction may be used on
disinfected water that may contain lterable cysts.
6. Filter life will vary in proportion to the amount of water used and the level of impurities in the water
being processed. For optimum performance, it is essential that the lter be replaced on a regularly
scheduled basis as follows: (a) annually; (b) when the unit’s rated capacity has been reached; (c)
the ow rate diminishes; or (d) the lter becomes saturated with bad tastes and odors.
7. CB Tech Drinking Water System Housings are warranted for a lifetime (provided that lter has been
changed at least once per year). All exterior hoses and attachments to the System are warranted
for one year. Please see the Owner’s Manual for complete product guarantee and warranty
information.
8. Please see the Owner’s Manual for installation instructions and operating procedures.
9. In compliance with New York law, it is recommended that before purchasing a water treatment
system, NY residents have their water supply tested to determine their actual water treatment
needs. Please compare the capabilities of the CB Tech unit with your actual water treatment
needs.
10. While testing was performed under standard laboratory conditions, actual performance may vary.
11. The list of substances which the treatment device reduces does not necessarily mean that these
substances are present in your tap water.
Troubleshooting

Troubleshooting
15
Water ow is frequently interrupted by air
Purge any residual air from the system:
1. Turn the system housing upside down.
2. Turn on the ltered water faucet.
3. Allow water to ow for one minute.
4. Turn off the ltered water faucet.
Odor – rotten eggs, no discoloration on the lter
A rotten egg odor is a sign that H2S (hydrogen sulde) gas is present in your water source.
If hydrogen sulde gas is present in your water source, it is recommended that you
rotate DWS usage between 2 lter cartridges. When the DWS emits the rotten egg smell,
remove the lter and allow it to dry upside down to allow the gas to dissipate (the lter
can be reused once dry). Use the second lter in the unit while the rst lter is drying.
Odor – rotten eggs, with discoloration on the lter
A rotten egg odor is a sign that H2S (hydrogen sulde) is present in your water source.
Filter discoloration can determine the source:
• orange/brownish colors – iron
• blackish colors – manganese
• slimy/blotchy colors – decaying organisms
When hydrogen sulde comes from a source that discolors the lter cartridge and
creates a strong rotten egg odor, the only recommended solution is to change the
lter cartridge.
Color – milky color in the water
Milky color in the water is typically caused by air bubbles in the water. Higher than
normal water pressure through the DWS can create these small air bubbles, but they
do not affect system performance.
For countertop systems, turn on the water and engage the diverter valve while
slightly reducing the water ow. Less water pressure through the system can prevent
air bubbles from forming.
Color – black color in the water
Black color in the water is typically caused by residual carbon dust from the lter.
Allow water to run through the DWS for approximately 30 minutes to ush the lter.
Residual carbon dust may initially color the water black.
Flow rate – the water ow rate is slow
The lter is designed to restrict its ow rate when clogged with particulates or other
solid contaminants.

When the water ow rate slows to the point of inconvenience, or at one year of use,
it is time to replace the lter cartridge. If other water sources are on while using the
DWS, turn them off to check if they are affecting the ow rate.
Taste/Odor – miscellaneous
The carbon block lter may have become saturated with the tastes and odors
treated in your drinking water.
To resolve this, change the lter.
Bypass lever – sticking (hard to move)
Minerals in the water can build up on the diverter valve, causing the bypass lever to
stick and preventing the buttons from being pressed easily.
A sticking bypass lever can be solved by lubricating it or by dissolving the mineral
deposits.
Lubrication – requires vegetable oil; because lubrication does not dissolve the
mineral deposits, it may need to be performed periodically.
1. Unscrew the diverter valve and remove from the faucet.
2. Pour a small amount of vegetable oil in the inlet hole.
3. Push the left and right buttons on the diverter valve several times to lubricate it
thoroughly.
4. Reconnect the diverter valve to the faucet.
Dissolving – requires vinegar; may cause discoloration to the metal.
1. Unscrew the diverter valve and remove from the faucet.
2. Soak the diverter valve in a bowl of vinegar for 10 minutes.
3. Rinse the diverter valve and reconnect to the faucet.
Bypass lever – stuck (cannot be pressed)
The bypass lever can occasionally become stuck due to the presence of air in the
tubing. This can prevent the buttons from being pressed.
1. Unscrew the diverter valve and remove from the faucet.
2. Press the left and right buttons to test it. If they press in easily, then removing the
diverter valve freed the air in the tubing.
3. Reconnect the diverter valve to the faucet.
16

17
Frequently Asked Questions
Will low pH or acidic water affect the lter?
No. Mineral components can determine the pH of water, and minerals dissolved in
solution in the water pass through the system unltered.
• pH 7 = neutral
• pH > 7 = alkaline
• pH < 7 = acidic
Does deionized water or soft water have an effect on CB Tech water?
No. Because CB Tech lters do not treat the natural minerals dissolved in water, the
hardness or softness of water has no effect on the resultant ltered CB Tech water.
Can the CB Tech system be used during an emergency or when the water
is turned off?
Yes. During an emergency or when the source water is off, you can hand pump or
siphon water through the CB Tech system.
CAUTION: The CB Tech system is not intended for use where the water is
microbiologically unsafe or with water of unknown quality without adequate
disinfection before or after the unit. To disinfect questionable source water, add
1/4 tsp. of household bleach per gallon of source water; the CB Tech system will
remove this solution from the water during the ltering process. Hand pump kits and
emergency kits are available from CB Tech.
What causes white particles to appear in CB Tech water when it is frozen or boiled?
Because the Water Guardian does not reduce any natural minerals present in water,
these minerals may solidify when the water is frozen and appear as white akes or
specks when the water is melted or boiled.
Many natural minerals in water are benecial to your health, and their existence in
drinking water (in normal quantities) is not cause for alarm. Minerals can be removed
by reverse osmosis technology, which is available through the CB Tech AquaRO
Drinking Water System.
Why does the CB Tech system reduce Volatile Organic Chemicals, but not
natural minerals?
Minerals are dissolved in solution and do not have an actual physical size; thus, the
minerals pass through the system unltered.
Should sediment be removed with a standard lter rst?
In areas with excessive sedimentation, pre-ltration can help extend the operational
efciency of the CB Tech lter; however, in most areas it is unnecessary.
CB Tech Drinking Water Systems utilize a double-lter mechanic. The outer material is
a pre-lter that protects the solid carbon block from prematurely clogging with large
sediment.

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Why is the compressed solid carbon block lter more efcient than (loose) granular
activated carbon lters?
CB Tech’s densely compacted solid carbon block lters force water through
microscopic pores of carbon – much smaller than those of granular activated
carbon – thus more effectively reducing particulate matter and contaminants that
affect the quality, taste, and odor of the water.
What is the difference between a “water softener” and a CB Tech Drinking Water
System?
Water softeners are not designed to treat drinking water for contaminants; instead,
they are designed to adjust the hardness (mineral content) of the water. CB Tech
systems do not remove dissolved minerals from the water, because natural minerals
often found in water are considered benecial to good health.
Soft water is often desirable for bathing and laundering purposes, and may extend
the life of hot water heaters and boilers. However, soft water is not recommended for
use on plants or lawns. CB Tech recommends that you bypass a water softener when
installing your CB Tech Drinking Water System.
Can the CB Tech Drinking Water System be used with untreated water?
CB Tech systems are designed to be used with municipally treated water; they are
not intended to be used where the water is microbiologically unsafe or with water
of unknown quality without adequate disinfection before or after the unit. Systems
certied for cyst reduction may be used on disinfected waters that may contain
lterable cysts. To disinfect questionable source water, add 1/4 tsp of household
bleach per gallon of source water; the CB Tech system will remove this solution from
the water during the ltering process.