CRO-Series
5-Stage Reverse Osmosis System
Installation and Maintenance
Manual
MKTF - 215
Model:
Date Code:
Install Date:
Sold by:
Installed By:
Service Center
Phone Number:
Please fill out the following information at the time of installation. Save for future reference.
MKTF - 215 2
.
Introduction
This reverse osmosis systems features a four-stage prefilter, membrane and postfilter housed in a single cartridge. The fifth
stage, an in-line carbon filter, is placed between tank and faucet.
When properly maintained, this system will provide you with years of trouble-free service. The next sections contain
important information on the proper care and maintenance of your system, please take a few minutes to read through this
information.
The cartridges in this system must be replaced on a regular basis to maintain efficiency and to ensure high water quality.
These cartridges work together and must be replaced every 6-12 months. Any significant change in performance of the
system should be investigated promptly to avoid secondary damage or deterioration to other parts of the system.
CAUTION: Improperly installed systems could result in water damage due to leaks or flooding. Proper installation of this
system requires familiarity with standard sink plumbing and proper use of common hand and power tools. If you are not
familiar with standard sink plumbing and proper use of common hand and power tools or have any difficulty with the
installation of this system, consult a licensed professional, such as a contractor or plumber.
NOTE: This system has been designed for installation by licensed professionals, such as a contractor or plumber.
Stage Description
4-Stage Cartridge
1) 20 micron sediment prefilter
1-4
5
2) Granular activated carbon prefilter
3) Reverse osmosis membrane
4) Granular activated carbon postfilter
Granular activated carbon postfilter
(inline between tank and faucet)
Replacement
Interval
12 months
6-12 months
MKTF - 215 3
Limited Warranty
This Limited Warranty extends to the original purchaser of the system only. This warranty covers all Manufacturer-supplied
items only that prove to be defective in material, workmanship or factory preparation. This warranty covers parts only; all
labor is excluded from this warranty, including, but not limited to, services related to the removal, replacement, installation,
adjustment, maintenance and/or repair of the unit or its components items. excludes all non-Manufacturer labor required
for any servicing of the unit, including, but not limited to, servicing related to installation, adjustment, maintenance and
repair of the unit. This warranty applies only for the first full calendar year from date of purchase. The following items are
excluded from this warranty: membranes, filters, O-rings, and all other parts or components that require regular
replacement as a result of ordinary usage.
Disclaimers: This Limited Warranty applies only if the system is installed, used and maintained in compliance with all
instructions and requirements enclosed with the system. This warranty will be void for failure to observe the following
conditions:
1. The system is to be used with potable water from a municipal water system.
2. Feed water pressure to the unit is no less than 40 PSI and no greater than 80 PSI.
3. The system is to be used on water supplies with chlorine concentrations of 1.0 mg/L (ppm) or less.
4. Feed water temperature to the unit must be no less than 40°F and no more than 100°F.
5. Total dissolved solids in feed water must be less than 2,000 mg/L (ppm).
6. Feed water must have a pH between 4 and 8.
7. Turbidity must be less than 1.0 NTU.
8. SDI must be less than 5.
9. Feed water must be completely free of iron, manganese or hydrogen sulfide.
Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after
the system.
The Manufacturer does not know the characteristics of your water supply. The quality of water supplies may vary seasonably
or over a period of time. Your water usage may vary as well. Water characteristics can also change if the drinking water
appliance is moved to a new location. The Manufacturer assumes no liability for the determination of the proper equipment
necessary to meet your requirements, and we do not authorize others to assume such obligation on our behalf.
This Limited Warranty does not cover any Manufacturer-supplied items that are defective as a result of the use of improper
parts, equipment or materials. This warranty does not cover alterations or modifications of the unit, or failure of a unit
caused by such alterations and modifications
This Limited Warranty does not cover malfunctions of the unit due to tampering, misuse, alteration, lack of regular
maintenance, misapplication, fouling due to hydrogen sulfide, manganese or iron, scaling from excessive hardness, turbidity
greater than 1.0 NTU, Silt Density Index (SDI) greater than 5.0 SDI, or excessive membrane hydrolysis due to chlorine levels
in excess of 1.0 mg/L (ppm). In addition, damage to the unit due to fire, accident, negligence, act of God, or events beyond
the control of the Manufacturer are not covered by this warranty.
Incidental and Consequential Damages Limitation: The Manufacturer will not be responsible for any incidental or
consequential damages as a result of the failure of this unit to comply with express or implied warranties or any defect in the
unit, including but not limited to, lost time, inconvenience, damage to personal property, loss of revenue, commercial losses,
postage, travel, telephone expenditures, or other losses of this nature. Some states do not allow the exclusion or limitation
of incidental or consequential damages, so this exclusion may
not apply to you.
Owner’s Warranty Responsibilities: As a condition of this Limited Warranty, the owner must ensure periodic maintenance of
the system
modification or alteration of the unit will invalidate this Warranty. Should your unit develop a defect or otherwise fail to
perform in accordance with this warranty, you should contact the retailer from whom the product was originally purchased.
is performed as described in the literature enclosed with the system. Neglect, improper maintenance, abuse,
Implied Warranties: The implied at-law warranties of merchantability and fitness for a particular purpose shall terminate on
the date one year after the date of purchase. Note: some states do not allow limitations on how long an implied warranty
lasts, so the above limitations may not apply to you.
Other Rights: This Warranty gives you specific legal rights and you may also have other rights which vary from state to state.
MKTF - 215 4
System Specifications
13.75” D x 15.38” H ( 24.7 x 34.9 x 39.1 cm), 11 lbs. (5 kg.)
14.5"L x 11.25"W x 20"H (36.8 x 28.6 x 50.8 cm), 13.7 lbs. (6.2 kg.)
B
allation
amiliarity
ould result in wa
t
without adequa
er
ank tubing (3/8” whi
t
onnection
ain tubing (3/8” whi
onnect fitting
ain tubing (1/4” black)
t tubing (3/8” blue)
membrane
er tubing
with shu
fil
or
of
e or of unknown quality
em.
B
Dimensions and Weight
System - 9.72” W x
Shipping Box -
D
G
I
L
M
K
J )
(behind cover)
This system has been designed for inst
of this installation will require basic f
Improperly installed systems c
E
F
B. Tank valve
C. T
D. Air-gap fauce
E. Drain c
F. Dr
G. Quick c
A. Product wat
H
H. Dr
I. Fauce
J. Four-stage
C (not shown)
K. Feed wat
L. Inlet fitting
M. Carbon post-
A
by a licensed professional such as a contract
with standard sink plumbing and proper use
ter damage due to leaks or flooding.
storage tank
te)
assembly
te)
(1/4” green)
t-off
ter
or plumber. Proper completion
common hand and power tools.
Performance Specifications
Membrane Production 50 GPD
System
Production 14.61GPD
TDS Rejection 96.5%
Recovery
System tested at 50 psig, 750ppm TDS at 77°F.
1
The percentage of the feed water
available as reverse osmosis treated water
under normal operating conditions.
1
26.76%
Do not use with wa
Feed Water Requirements
Pressure 40-80 psi (275 kPa - 552 kPa)
Temp 40°F - 100°F (4°C - 38°C)
TDS <2000 mg/L
Chlorine <1.0 mg/L
Turbidity <1 NTU
SDI <5
pH 4-8
Feed water must be potable, municipal water. Must
be free of potential membrane foulants such as Iron,
Hydrogen Sulfide and Manganese.
er that is microbiologically unsaf
te disinfection before or after the syst
MKTF - 215
5
Push Handle Airgap Faucet
1. Locate the faucet parts bag and arrange the parts on the
countertop in the sequence shown.
2. Locate the piece of white tubing. Pull the white, black and blue
tubing up through the faucet hole in the sink.
3. Insert the rubber seal onto the base of the faucet.
4. Push the 1/4” black drain tubing attached to the system onto
the smaller 1/4” barb located on the faucet base.
5. Push the 3/8” white tubing onto the larger 3/8” fitting located
on the faucet base.
6. Slide white plastic spacer onto the threaded faucet stem.
NOTE: This spacer may be
granite countertop (or countertop with similar thickness).
a
7. Loosely thread the serrated washer and mounting lock nut
onto the threaded stem. Leave enough space for the slotted
washer which will be used in step 11.
8. Thread the faucet quick-connect adapter (6) on to the threads
of the faucet stem.
NOTE: This
9. Push the end of the 3/8" blue tubing into the 3/8" connection
at the end of the adapter.
10. Push the tubing down into the faucet hole and position the
faucet base to the approximate final orientation.
11. From underneath the sink, slip the slotted washer between the
white plastic spacer and the sink. Check the orientation of the
faucet on the sink. Securely tighten the mounting nut with a
wrench.
12. Firmly insert spout assembly into the top hole of faucet body
(approximately 1/4"). You may swivel the faucet left or right.
connection
omitt
ed if the faucet is installed in
should be hand t ightened only.
MKTF - 215 5
Feed and Dr
ain Connection
al
ed under the sink on the pipe
e is closed,
eed line
o the angle
nt
eed line i
e on the g
t
o the
o the side of the
ou will need an electric drill with a 3/8” bit and a sc
w
om the small parts bag (Fig. 2).
oam pad on the inside of the d
ain pipe under the sink b
ain saddle so th
tig
v
ain saddle
the side of the d
Extend the drain tubing from the RO dispensing faucet to the drain saddle and measure
for length. The tubing must be routed so that water can run downhill for the entire length
of the tubing from the faucet. Avoid low spots or loops. Cut the tubing shorter
8. Insert the drain tube from the RO dispensing faucet through the drain saddle connector
nut. Tighten the connector nut onto the drain saddle.
e
er
er
the saddle grips
ain saddle.
Feed Connection
1. Locate and turn off the angle stop v
will usually be locat
2. When the angle stop valv
tap on the sink.
3. Disconnect the cold water faucet f
4. Install the feed adapter int
5. Firmly press the green 1/4” tubing i
6. Connect the cold water faucet f
7. Make sure the small shut-off valv
connection valve. Check for leaks.
7. Attach the small feed valve warning
8. Attach the Shut-off Warning label t
Date of Installation label and attach t
Drain Connection
1. Y
installation.
ve on the cold water line feeding the sink. This valv
coming out of the wall.
relieve pressure in the line by opening the cold wat
at the angle stop valve.
stop. (Fig. 1)
o the 1/4" connector on the feed adapter.
nto the feed adapter.
reen feed line is closed. Turn on the feed wat
ag from the parts bag to the feed valve.
system so that it is directly visible. Fill out the
system.
rewdriver for this portion of the
Fig. 1
Note: The drain saddle
assembly must be installed
before the ‘P’ trap. Do not
install the drain saddle
assembly between the ‘P’
trap and the wall.
2. Obtain the drain saddle assembly, t
adhesive foam pad fr
3. Place the adhesive f
4. Position the drain saddle on the dr
sink connection. Orient the dr
5. Using the bolts and hex nuts, hand
the pipe snugly. Use a Phillips screwdri
6. If necessary, remove the dr
Using the connector opening in
through the wall of the drain pipe.
7.
o 1 ½” bolts, two 3/8” hex nuts, and the small
rain saddle front, aligning the holes.
etween the “P” trap and the
at the opening is on the side of the drain pipe.
hten the saddle bracket evenly until
er to fully tighten the bolts. Do not over tighten.
connector nut from the opening of the dr
rain saddle as a guide, drill a 3/8" hole
, if necessary.
Fig. 2
MKTF - 215
7
System Activation and Flushing
System Activation and Inspection
1. Check all tubing connections to ensure they are firmly seated. CHECK TO SEE THAT THE CARTRIDGE RETAINER CLIP IS
PROPERLY ENGAGED AND LOCKED. Failure to keep the retaining clip in place will result in accidental leaks and flooding.
2. Open the dispensing faucet at the sink. Close the tank shut-off valve. Make sure the feed valve for the incoming water
is open. Open the small feed shut-off valve on the green feed line.
3. Observe all tubing and connections for several minutes to detect any leaks. In approximately 5 minutes, (assuming
normal feed water pressure) the dispensing faucet should begin dripping.
4. Allow the faucet to run for up to 15 minutes, then close the faucet.
5. Check for leaks at all connections.
6. Open the tank shut-off valve.
Initial Flushing Procedure
1. Before the system can be used for drinking water production it must be adequately flushed. Each reservoir tank is
dosed with a small amount of powdered sanitizer before shipment, typically a chlorinating agent, in order to ensure tank
internal cleanliness. Also, the carbon filter cartridge will release a small amount of carbon fines during the first tank full of
flow. This flushing procedure will allow any sanitizer or carbon fines to pass from the system.
2. Initial tank filling will take approximately one hour (based on average feed pressure). When the tank is full, the water
pressure will have risen to the point where the automatic shut-off valve inside the system will stop the feed flow through
the system. Actuation of the automatic shut-off valve can be determined by either checking for a lack of brine flow to the
drain saddle, or by listening very closely near the dispensing faucet for absence of water flow sound though the air gap.
When the tank has filled for the first time, it should be left undisturbed for at least 8 hours to ensure proper sanitization.
3. After 8 hours has elapsed, open the dispensing faucet fully and allow the product water to run out to drain at maximum
flow. The initial discharge will be dark with the bulk of the carbon particle wash out. There may also be the scent of
chlorinated water from the sanitizing agent. When the flow has diminished to a fast drip or small stream, close the
dispensing faucet.
4. Fill and flush the tank at least three times prior to use. If necessary, repeat until the chlorination scent has disappeared.
It is important that the flush be done at maximum flow (e.g. the tank must be full) to assist in rapid wash out. After this
flushing procedure the system is ready for normal use.
MKTF - 215 8
Installation Checklist
1. System is located where it will not be subject to physical impacts or rough contact by heavy objects.
2. Feed water pressure to the unit is no less than 40 psi and no greater than 80 PSI.
3. Ensure the plastic retainer clip that holds the membrane cartridge in place is fully engaged and locked in place. The slide
locks must snap into place in the slots. If the clip does not snap easily into place through the slots it means the cartridge is not
fully inserted into the connectors. Press top or bottom of cartridge to engage connectors until it snaps into place properly.
4. All tubing connections, especially push-in quick connections, are fully inserted.
5. Tubing connected between the faucet and the drain saddle fitting (the fitting attached to the sink drain pipe) runs "downhill" to the drain. There should be no loops or places where water would not flow out to the drain.
6. Feed water valve is open.
7. Within one to two hours after initial application of water pressure, check again for leaks especially at the tank, faucet
tubing and connectors. These parts will not see full pressure until approximately 2 hours after the system is activated.
8. Flush three tank fulls of product water to drain. If a chlorine scent persists, repeat flushing
procedure.
MKTF - 215 9
Maintenance
Cartridge Replacement
1. Close the feed water shut-off valve.
2. Close the tank shut-off valve.
3. Open the dispensing faucet to relieve system pressure. Close dispensing faucet when flow has stopped.
4. Remove the cover from the front of the system. Remove the retaining clip. Pull the cartridge off the system
evenly at top and bottom. Dispose of used cartridge.
6. Install the new cartridge, rocking gently from side to side as necessary until the cartridge tubes are properly
engaged in the unit connectors. Install the retaining clip, ensuring the slide locks snap into place in the slots. If the
clip does not snap easily into place through the slots it means the cartridge is not fully inserted into the connectors.
Press the top or bottom of the cartridge to engage the connector so that it snaps fully into place. Failure to properly
install the retaining clip will result in accidental leaks and flooding.
7. Turn on feed water shut-off valve and open dispensing faucet.
8. Close dispensing faucet after water starts running.
9. Observe system for any leaks, especially at newly replaced cartridge.
10. Open the tank shut-off valve.
11. The system should be flushed at least once as described above under Section 8.
Post Filter Replacement
1. Close the feed water shut-off valve.
2. Close the tank shut-off valve.
3. Open the dispensing faucet.
4. Close the dispensing faucet when the water stops flowing.
5. Locate the inline filter on the faucet line.
6. Remove the red locks from the collets.
7. Remove the tubing by depressing the collet in a downward direction and pulling the blue tubing from the filter.
8. Remove the other side of the feed tubing as described above.
9. Reverse the above steps to install the new inline filter, making sure that the tubing is pressed in as far as possible.
10. Turn on the feed water valve. Observe system for any leaks, especially at newly replaced cartridge.
11. Open the tank shut-off valve.
12. The system should be flushed at least once as described in System Activation and Flushing.
MKTF - 215 10
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