RKIN AlcaPure User manual

Reverse Osmosis
Zero Installation Purifier
AlcaPure and OnliPure Editions

Please keep this manual, including service and warranty sections, for future use.
If you have any questions about the set up, operation, or maintenance of this
equipment, please visit https://rkin .com / guide / or call 1-800-803-4551
technical assistance.
for
DIRECT ACCESS
Easy maintenance.
CLICK
Secure connections.
ELECTRONIC ADAPTOR
High yield stability.
NSF CONNECTORS
High quality and trusted.
FT QUICK CHANGE FILTERS
Time and effort saving.
ZERO INSTALLATION
Ready to use.
ECO FRIENDLY - ZERO WASTE WATER
Filtration water recovery design.
Plug & Play
Easy instant operation.
ENCAPSULATED MEMBRANE
Maximum hygiene, minimum contact.

Contents
Introduction
Specifications
Parts description
4 Stage filtration & booster pump
What is natural osmosis and reverse osmosis (RO)?
How does the membrane work?
Contaminants removed by reverse osmosis
Operating conditions and cautions
Effect of TDS concentration in the inlet water
Startup and use
Push button control - user interface
Filtering cycle time
Filter initialization
Changing water in supply pitcher
Cleaning pure water reservour
Filter replacement
Prefilter replacement
Postfilter replacement
How quick connectors work
RO membrane replacement
Reset procedure
Troubleshooting
Filter change and maintenance record
4
4
5
5
6
7
8
9
9
10
12
13
13
14
15
16
16
17
18
19
22
23
24
26
Limited Warranty

4 \ INTRODUCTION
Thank you and congratulations on selecting the RKIN Zero Installation Purifier.
RKIN water filters are among the best appliances you can find on the market to
improve water taste and quality.
With the water quality of our environment worsening, we have been prompted
to design and manufacture RKIN Zero Installation Purifier - a compact,
domestic reverse osmosis water filter to meet these challenges with the highest
quality solutions.
Your RKIN Zero Installation Purifier will provide many benefits and advantages:
•BPA free.
•Provides high quality water.
•Ensures high production.
•Low maintenance costs.
•Compact innovative design and concept.
•No installation or water connections.
•No water waste. All water can be used.
•Saves time on set up and maintenance.
With RKIN Zero Installation Purifier you will enjoy the improved taste of water
for drinking, coffee, and ice cubes or any other drinking water use. Reverse
Osmosis filtered water also enhances the flavor of food when cooking. Enjoy
healthier water for your whole family.
TECHNICAL SPECIFICATIONS
Model: RKIN-ZIPAL / RKIN-ZIPDI
Dimensions: (HxWxD) 415 x 250 x 380 mm
Weight: 25 lbs. (11.3 Kg)
Temperature Range (max/min): 45°C/5°C (113°F/41°F)
Inlet TDS (Maximum): 800ppm
R
Hardness: Maximum 25 grains (hardness over 10 grains may reduce
lifespan of the reverse osmosis membrane)
O Membrane: Type 1×1812 75 GPD
Production: 75 gallons per day
Electrical operation: 24VDC, 24 W
Electrical adaptor: 100-240 V 50 / 60Hz. 24VDC
Treated water reservoir capacity: ½ gallon (2 liters)
Supply water pitcher capacity: 1 gallon (4 liters)

REVERSE OSMOSIS
6 \
WHAT IS NATURAL OSMOSIS AND
REVERSE OSMOSIS?
Natural or direct osmosis is common in nature, found in places like the semi-
permeable membranes which are part of the vast majority of organisms (e.g. plant
roots,our ownbody organs, cell membranes, etc ...)
When two solutions of different concentrations of salts (TDS -Total dissolved
solids) are separated by a semi permeable membrane, it naturally produces a flow
of water from the less concentrated solution to the higher concentrated solution.
This flow continues until the concentrations on both sides of the membrane are
equal.
To overcome this tendency, and reverse the natural flow of the system, (in
order to obtain a flow of water from a higher salt concentration solution to a
lower salt concentration solution) pressure is applied to the water on the side of
the membrane with the higher concentration. Pure water is collected from the
lower pressure side of the membrane and this process is what is called reverse
osmosis. Today, reverse osmosis is one of the best methods for improving the
characteristicsof water by a physical process(without using chemicals).
For video walkthroughs and online userguide, please visit:
https://rkin.com/guide/

RO MEMBRANE /7
HOW DOES THE mEmBRANE WORK?
Pressure is applied to the water on the inlet side of the semi permeable
membrane, so that part of it (RO water) will flow through the pores of
the membrane, while the rest of the water (water rejected with high salt
concentration) will be diverted back to the supply pitcher to recycle and
optimize performance.
Since the diameter of the pores of the membrane is less than 0.0001 microns,
only water molecules and a small amount of minerals (sodium, potassium,
calcium, magnesium, etc.) will pass through the membrane. Larger molecules
will be “rejected” from passing through the membrane.
Particle filter
5 µm
Particle filter
1 µm
Ultrafiltration
0.01 µm
Reverse
Osmosis
0.0001 µm
Bacteria
0.2 µm
Virus
0.02 µm

CONTAMINANT REDUCTION
8 \
CONTAMINANTS AND OTHER SUBSTANCES REDUCED
BY REVERSE OSMOSIS MEMBRANE.
The chemical composition and concentration of salts and other substances in
the inlet water will affect the water produced. The reverse osmosis membrane
of the RKIN Zero Installation Purifier is able to reduce the concentration of
elements and compounds listed in the following tables and more.
Element / Compound
Sodium
Calcium
Magnesium
Aluminum
Copper
Nickel
Zinc
Barium
Carbonates
Chlorine
Bicarbonates
Nitrates
Phosphates
Fluoride
Cyanide
Mercury
Chromium
Arsenic
Reduction
90-95%
93-98%
93-98%
93-98%
93-98%
93-98%
93-98%
93-98%
93-98%
90-95%
90-95%
90-95%
93-98%
93-98%
90-95%
94-96%
94-96%
93-98%
INORGANICS
Element / CompoundÁCI-
Total Organic Compounds
Glucose
Acetone
Isopropanol
Ethyl benzene
Ethylphenol
Tetrachloroethylene
Urea
1,2,4 trichlorobenzene
1,1,1 trichloralethane
Reduction
98%
98-99%
70%
90%
71%
84%
68-80%
70%
96%
98%
ORGANICS

OPERATION/ 9
OPERATION CONDITIONS
•Do not use waterabove 113°F (45°C)
•The ambient temperature must be between 40
and 104 °F (4 and 40 °C. )
•Keep the system from extreme temperatures,
like cooking surfaces, direct sunlight, and
extreme environmental conditions.
•Avoid external dripping on the purifier.
CAUTIONS
Do not use with water that is microbiologically unsafe, of unknown quality, or
without adequate disinfection before or after the system. If the water being
filtered is from a public water supply, it will comply with requirements and your
RKIN Zero Installation Purifier will substantially improve the water quality.
In the event that the water to be filtered is not from a public water supply,
or is of unknown origin, in order to ensure proper purification, contact your
distributor to advise you on the most appropriate physical, chemical and
bacteriological water treatment to use with your RKIN system.
•Unplug the unit before repair,inspection or filter replacement.
EFFECT OF TDS CONCENTRATION
IN THE INLET WATER
Production rate will vary depending on the TDS content (Total Dissolved Solids)
and temperature of water to be filtered. Water with a lower temperature and
higher TDS will be filtered slower than water which is warmer or of a lower TDS.
•It is recommended to use water with a maximum hardness of 25 grains in
order to obtain optimum performance.
•If the inlet water is of hardness greater than 25 grains, or contains high
concentrations of iron or manganese, or hyper chlorination, there may be a
reduction in membrane life and performance of certain components of the purifier.
RKIN Zero Installation Purifier is designed for TDS up to 800 ppm. For TDS
above 800 ppm, consult your dealer. (If the water being filtered is from a public
water supply, it will comply with requirements forwater to be used for the RKIN
purifier.)

STARTUP AND USE
10 \
STARTup AND OpERATING
3.
1. Remove Zero Installation Purifier and contents from box and place on a
convenient counter top or table within three feet (1 meter) of an electrical
outlet. (fig. 1)
2. Equipment must be operated on a level surface and not inclined. (fig. 2)
3. Plug the AC adapter into the power socket on the back of the Zero
Installation Purifier. Plug the electric cord into a wall socket. (fig. 3) (The Push
Button Control LED will glow blue)
4. Remove the supply pitcher from its base by pulling out on the front handle.
(fig. 4) (The LED will flash yellow)
5. Place the pitcher with divider and funnel inside under a faucet and fill to the
“Max” level marked on the front of the pitcher. (fig. 5)
※Note: AC adapter is shipped within the Styrofoam packaging.

STARTUP AND USE
/ 11
8. To dispense Purified water, eitherpush in or pull
out on the dispenser handle. When pulled out,
the handle will stay in the openposition. (fig. 8)
6. Replace the supply pitcher to the base of the
RKIN Zero Installation Purifier, being sure the
pitcher is securely seated into the base. (The
Push Button Control should glow steady blue.)
7. Pressthe control button once. (fig. 7)
The purifier will draw water from the supply pitcher and direct purified water
to the Pure WaterTank.
A complete filtering cycle produces approximately 1/2 gallon (2 liters) of pure
water, stored in the upperreservoir.
Concentrate - water containing impurities rejected by reverse osmosis
membrane is directed back to the supply pitcher for recycling.
Divider and funnel are designed to divert the concentrate water to the bottom
of the supply pitcher, allowing for optimum filtration performance. Divider
and funnel are loosely placed inside the supply pitcher for easy removal and
cleaning.

PUSH BUTTON CONTROL
12 \
puSH BuTTON CONTROL - uSER INTERFACE
The filters and reverse osmosis membrane change notifications are based on
the preset time interval and don't indicate the water quality.
Please see page 22.
INDICATOR
LIGHT STATUS FUNCTION MEANING
LED
Steady
Blue
POWER ON System is in power saving
standby mode.
LED
Flashing
Blue
FILTERING
The system is in operation
and filtering cycle is in
progress.
LED
Steady
Yellow
FILTERING
COMPLETE
Pure water has been drawn
off from the supply pitcher
to the “minimum”level
and automatically turned off.
Cycle complete.
LED
Flashing
Yellow
ALARM The supply pitcher is not
mounted or set correctly.
LED
Steady Red
RO
MEMBRANE
CHANGE
INDICATOR
Time to change RO
membrane.
(page 19-21)
LED
Flashing
Red
FILTER
CHANGE
INDICATOR
Time to change filters.
(page 16-18)

FILTER INITIALIZATION
When the purifier is being used for the first time, the filters should be rinsed by
running the purifier for two cycles, and discarding the water. Water from the
first cycle may contain fine carbon sediment from the post filter which may give
the water a slight gray color. This carbon is food grade and healthy, and will not
affect the quality of the water. After filtering two cycles, the pure water reservoir
may be removed from the purifier and rinsed with tap water. (See page 15)
With filters rinsed, the purifier may now be used for pure water filtration.
When filters in the unit are brand new, it takes some water to fill any empty
space within the system.
The top tank will have less filtered water than usual during initial cycle, and
purifier might sound a bit louder as air is being pushed out from the system.
FILTERING CYCLE TIME / 13
FILTERING CYCLE TImE
Filtration completed within 20
minutes or less.
Filtration incomplete after 20 minutes
preset cycle.
Normal condition Filters should be changed
The time required to complete one cycle will vary according to water quality,
water temperature and how long the filters have been used. The filtering
process will turn off automatically once the cycle is completed.
Gradually as the filters and membrane become used, the filtering cycle time will
become longer. Usually the filtering process will complete before reaching a
preset 20 minute time limit. If the water level in the bottom tank doesn’t
come close to the minimum ”0” level in one 20 minute cycle, this indicates that
the filters should be changed.
PUSH PUSH

WATER SUPPLY
14 \
CHANGING WATER IN SuppLY pITCHER.
After completing a filtration cycle, completely empty the supply pitcher, and
refill with fresh water before starting another cycle. The water remaining in the
supply pitcher after a filtration cycle has a higher concentration of TDS, so
starting a new cycle, by adding fresh water to this remaining concentrate water
will lower system performance and can damage the RO membrane and filters.
5.
Do not
add
Notice:
• Water should not be stored in the purifier for extended periods of time
exceeding one week.
• If you plan to not use the purifier for more than one week, completely empty
the water supply pitcher and pure water reservoir, and disconnect the power
supply. When you return, filter two cycles of water to rinse the system.
• If the purifier has not been used for more than a month, remove and wash
with soap and water both the supply pitcher and pure water reservoir. Rinse
the reservoirs and filter two cycles of water to rinse the system.

CLEANING / 15
CLEANING puRE WATER RESERVOuR
1. 2. 3.
4. 5. 6.
1. Remove top cover.
2. Slide the front cover panel up and remove.
3. Turn the pure water supply tube so it is pointing up.
4. Slide the pure water reservoir forward to remove.
5. Remove supply pitcher.
6. Wash both reservoirs with a soft cloth,dish soap, and water.

FILTER REPLACEMENT
16 \
FILTER REPLACEMENT
For easy to follow filter replacement videos, please visit https://rkin.com/guide/
Periodic filter replacement is required to insure water quality and proper
performance of filters. These are the recommended filter change periods to be
used as a guideline for municipal inlet water. Filters may need to be changed
more often if inlet wateris of lower quality.
PREFILTER REPLACEMENT
PREFILTER PP5μ AND PREFILTER CARBON
To change the prefiltersproceed asfollows.
1. Unscrew the two screws on the backof purifier.
2. Remove the back cover.
3. Identify the filter to be changed. Rotate clockwise to unscrew and remove
from purifier.
Prefilter
PP5μ
Prefilter
Carbon
RO
Membrane
Post Filter
1. 2. 3.
*Depending on the water quality of
your water supply and usage, the
post-filter may need to be replaced
more often than the recommended
replacement schedule.
It is time to replace the post-filter
when the filtered water has:
．an abnormal water taste.
．a higher than usual TDS reading
for OnliPure only.
．a pH level below 7 for AlcaPure
only.
Prefilter PP5μ
Prefilter Carbon
Post Filter
RO Membrane
Change at 12 months
Change at 12 months
Change at 2 years
Change at 12 months*

POSTFILTER REPLACEMENT / 17
pOSTFILTER REpLACEmENT
To change the postfilter, proceed as follows.
4. Remove new filter from packaging and insert into purifier by gently pushing
upwards while rotating counterclockwise until seated in place.
5. Replace back cover.
6. Reset filter indicator light. See page 22 for filter notice reset procedure.
1. Unscrew the two screws on the back of purifier and remove it.
2. Pull the postfilter out to free it from the retaining clips.
3. Remove the fittings from IN and OuT ports of the post filter.
4. 5. 6.
1. 2. 3.
FLOW
FLOW

HOW QUICK CONNECTORS WORK
18 \
HOW QuICK CONNECTORS WORK
• To remove tubing from the connector: Remove the safety clip from under
the collet, push in the collet, and pull the tube out. (fig. A)
• Installation. Ensure the tube is clean and free of burrs. Push the tube into
the connector until it stops. (fig. B)
• Replace safety clip.
B.
Collet
(Do not remove)
Insert tubing
A.
Push collet in
and pull tube out
1.
2.
safety clip
4. Remove new filter from packaging. Paying attention to the direction of flow
indicated by the arrow on the outside of the post filter. Connect the fittings
into IN and OuT ports of the post filter.
5. Mount the postfilter back into the retaining clips and replace back cover.
6. Reset filter indicator light. See page 22 for filter notice reset procedure.
FLOW
4. 5. 6.
FLOW

RO MEMBRANE REPLACEMENT / 19
RO MEMBRANE REPLACEMENT
How to tell if the RO membrane needs replacement:
The condition of the membrane is assessed by testing the percent TDS (Total
Dissolved Solids) rejection:
For accurate results test the water of the 2nd consecutive filtering cycle. After
filtering water, the first time, empty top and bottom containers and run the
second batch right away to be tested.
Using a TDS meter, compare the TDS of the inlet water to the pure RO water,
and obtain the percentage of TDS rejection.
Your supplier can help you to check your water quality, or you can purchase a
TDS tester to test by yourself.
% rejection rate = TDS of inlet water – TDS of pure water
TDS of inlet water
Example:
Inlet water TDS = 300ppm; Pure water TDS = 18ppm*
300 – 18
300
If rejection goes below 70% the membrane life hascome to an end.
After the RO membrane, the filtered water passes through the post filter which
adds minerals to the water, raising the TDS by about 20 - 40 PPM. So the TDS
after the post filter will be higher than immediately after the RO membrane. As
long as the rejection rate calculated after the postfilter (final product water) is
above 70%, the RO membrane is still okay.
90 - 95% > Maximum Quality
70 - 80% > Low Quality
80 - 90% > Medium Quality
x 100%
x 100% = 94% rejection rate
TDS Tester
*Only applicable to AlcaPure Edition:

20 \ RO MEMBRANE REPLACEMENT
HOW TO REPLACE THE RO MEMBRANE
1. Remove the back cover.
2. Remove the postfilter from the postfilter retaining clips, and remove the
retaining clips from the RO cartridge.
3. Pull the RO membrane cartridge to remove it from the RO cartridge
retaining clips.
For easy to follow filter replacement videos, please visit https://rkin.com/guide/
4. To remove the elbows from the RO cartridge, push the collet sleeves into
the elbow connector.
5. While holding the collet sleeves in, pull the elbow off the top of the RO
cartridge.
6. In the same way, remove the two elbows from the bottom of the RO
cartridge.
1. 2. 3.
4. 5. 6.