Comfee CMP10 User manual

Reverse Osmosis Water Purifier
Instruction Manual
Model: CMP10
Please read the manual carefully before operating your water purifier.
Please keep this owner’s manual for future reference.

Table of Contents page
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Product Introduction ----------------------------------------------------------------------------------------
Benefits of Comfee CMP10 -------------------------------------------------------------------------------
Specifications and Dimensions --------------------------------------------------------------------------
Packing List ---------------------------------------------------------------------------------------------------
Tools Needed for Installation -----------------------------------------------------------------------------
Plan Your Installation ---------------------------------------------------------------------------------------
Site Preparation ---------------------------------------------------------------------------------------------
Installation Procedure --------------------------------------------------------------------------------------
How to Cut and Connect PE Tubes --------------------------------------------------------------------
Installation Instructions ------------------------------------------------------------------------------------
STEP 1 – Install Cold Water Supply Fitting ------------------------------------------------------
STEP 2 – Install Drain Saddle Adapter -----------------------------------------------------------
STEP 3 – Install Reverse Osmosis Faucet ------------------------------------------------------
STEP 4 – Install Filters --------------------------------------------------------------------------------
STEP 5 – Install Fresh Water Storage Tank & Reverse Osmosis Assembly ------------
STEP 6 – Connect PE Tube -------------------------------------------------------------------------
Maintenance and How To Section
First Time Use – Flushing Stage 1 – 3 Filters ---------------------------------------------------
How to Install the RO Filter ---------------------------------------------------------------------------
Flushing All Filters in System ------------------------------------------------------------------------
Replacement of Filter Elements --------------------------------------------------------------------
How to Replace 1st to 3rd-Stage Filter Elements ---------------------------------------------
How to Replace the RO Membrane Filter Element --------------------------------------------
Replacement of the 5th Stage Post Carbon Filter Element ---------------------------------
Filter Element Parameters ----------------------------------------------------------------------------
Trouble Shooting ----------------------------------------------------------------------------------------

Product Introduction
Reverse Osmosis water purifiers use a multi-stage purification process to remove impurities
and make water suitable for consumption. The intensive purification processes remove
contaminants at different stages to ensure that you get completely safe and clean drinking
water. The Comfee Model CMP10 has a 5-stage purification process designed to remove
dissolved impurities, chlorine, and any other chemical present in water during the purification
process.
1) Removes Disease-Causing Contaminants: CMP10 removes bacteria, viruses, and dissolved
impurities from water to make it safe for consumption.
2) Makes Tasty Food: CMP10 purification process improves the taste of your food by removing
chlorine and odors caused by the impurities in water.
3) Saves Money: CMP10 eliminates the need for purchasing bottled water. In addition, plastic
bottles are harmful to the environment, making CMP10 the best option for your family.
1
Benefits of Comfee CMP10
Specifications & Dimensions
Water source………………………………………………………………Municipal Tap Water
Supply water pressure …………………………………………40 – 80 psi (0.25 – 0.6 MPa)
Supply water temperature ………………………………………….....39 – 100°F (4 – 38°C)
Water Quality, 24 hours ………………………………………………...…..50 gal. (189 liters)
Percent rejection of TDS (new membrane) ………………………………………........≥90%
Product dimensions…………………………………………………...16” H x 9.5” W x 6.5” D
Test conditions of the above data: inlet water temperature: 77°F (25°C),
inlet water pressure: 0.25 MPa
1
2
3
4
5
6
8
7
1. Post Carbon Filter
2. Reverse Osmosis Filter
3. Fresh Water Storage Tank
4. Support Frame
5. PP Sediment Filter (Stage 1)
6. Pre-Carbon Filter (Stage 2)
7. Carbon Block Filter (Stage 3)
8. Faucet

Your Reverse Osmosis Drinking Water System is shipped complete in one carton. Remove
all items from your shipping carton and check all items against the packing list below. Note
any items lost or damaged in shipment. It is recommended to keep the small parts in
the parts bag until you are ready to install them.
2
Packing List
Reverse Osmosis System
Housing
Stage 1
Sediment
Filter
Stage 2
Pre-Carbon
Filter
Stage 3
Carbon
Block Filter
Stage 4
RO Filter
Stage 5
Post Carbon
Filter
Filter Housing Fresh Water
Storage Tank
Faucet Assembly5-Stage Filters
Inlet (White), Outlet (Blue),
Drain (Red)
Filter Housing Wrench PE Tubing Drain Saddle Adapter
Fresh Water
Tank Connector
Faucet Base
Connector
Feed Water
Adapter 1/4"
Filter Housing
O-Ring(Qty 6)
PE Tube
Lock Clips
(Qty 8)

Read through the entire manual before beginning your installation and follow all steps
exactly. Comfee CMP10 RO system can be installed under a sink or in a remote location.
Before starting, close the hot and cold water shutoff valves, reference Figure 1 as a visual
aid.
3
Tools Needed for Installation
Plan Your Installation
Read through the entire manual before beginning your installation. Before starting,
temporarily place water storage tank and Reverse Osmosis filter assembly into planned
location. Check position of items and space required for proper installation. Ensure
electrical plug and plastic tubes may be routed without kinking or bending. NOTE: You
must check and comply with all local plumbing codes.
Site Preparation
Tape
Measurer
Philips
Screwdriver
Box Knife Drill & Drill Bits
(3/8" )
Adjustable
Wrench
Thread
Tape Towel Gloves
Cold Water
Supply
Figure 1
Installation Procedure
There are six-steps to installing your reverse osmosis system. Please see following steps:
STEP 1 – Install Feed Water Adapter ¼”
STEP 2 – Install Drain Saddle Adapter
STEP 3 – Install Reverse Osmosis Faucet
STEP 4 – Install Filters
STEP 5 – Install Fresh Water Storage Tank & Reverse Osmosis Assembly
STEP 6 – Connect PE Tubing
Steps 1 through 6 are explained in detail over the next few pages. It is a good idea at this
time to check the installation site to make sure your drinking water system fits the designated
space.

How to Cut and Connect the PE Tubes
4
Typical Under Sink Installation Layout
How to Connect the Tubes
Cold Water
Supply
Push-in Fitting
Tu
Cut tubing stratight with end of tubing round
and smooth, with no frays or flat spots.
be
Example of Correctly Cut Tube
Collet O-Ring
Collet O-Ring
Tube Partially Engaged with Fitting
Tube Fully Engaged with Fitting
Figure 1
Figure 2
Figure 3
Figure 4
Review to the following instructions before connecting the
tubes to their dedicated fittings. Failure to follow these
instructions may lead to future leaks. See Figure 2 for more
information.
Both the Reverse Osmosis Assembly and fresh water storage tank will need to be installed in
a kitchen or bathroom sink cabinet. The reverse osmosis waste water line will need to be hard
connected to a sink drain-line by using the drain saddle adapter enclosed in the package.
Note: The drain saddle adapter will need to attach above the sink drain P-Trap to drain
water from the reverse osmosis system. Review the following schematic, Figure 1, for
more information.
How to Cut the PE Tube
1. Carefully use a tube-cutter or knife blade to cut the end of
tubing. Always cut the tubing square.
2. Inspect the tube up to 1” from the end to be sure there
are no nicks, scratches or other rough spots. If needed, cut
the tubing again.
1. You will notice that the PE tubes have black marks close to
the end of the tube. The black mark is to help assist you in
knowing if the PE tube is seated or fully engaged into the
fitting.
2. Push tubing through collet until it engages the O-Ring. See
Figure 3.
3. Continue pushing until the tube bottoms out against the
back of the fitting. See Figure 4.
4. Do not stop pushing when the tube engages the
O-Ring. Failure to follow these instructions may lead to future
leaks.
Under Sink Location

Installation Instructions
5
PE Tube Supplied with Reverse Osmosis System
STEP 1 – Install Cold Water Supply Fitting
Check and comply with your local plumbing codes before you start installation. Refer to the
Specifications and Dimensions page 3 for supply water requirements. The Water Supply
Fitting can be adapted to a 3/8” or ½” supply line with the enclosed adapter. See Figure 4
for more details.
INSTALL THE COLD WATER SUPPLY FITTING
1. As shown in Figure 4, the hot and cold water supply
shut-off valve can be located under the kitchen or
bathroom sink. Close both valves and open the sink
faucet to release any pressure in the water supply lines.
Make sure the sink faucet water has stopped flowing
before proceeding to the next step.
Note: Typically, the cold-water supply shut-off valve is
located on the right side. However, in order to ensure
this, please keep the hot water on for two minutes.
Feel the two hoses with your palm. The hot water
supply riser hose should be warm, and the other pipe
which is cold should be the cold-water supply pipe.
2. Before disconnecting the cold-water supply line, have a
bucket and towel ready to capture any water left-over in
the water supply line.
3. Disconnect the existing cold-water supply line from the
water shutoff valve and water faucet supply line.
4. Inspect the water supply fittings to make sure that the
gasket is inside the female threaded portion of the fitting.
5. Before installing the water supply fitting onto the
cold-water shutoff valve, be sure to wrap the threads with
thread-tape. Be careful not to cross thread or over-tight-
en.
6. Connect the existing cold-water line to the male
threaded portion of the water supply fitting and hand-tight-
en. Be careful not to cross thread or over-tighten. Once
threaded properly, tighten with an adjustable wrench.
7. When the water supply fitting is connected to the
cold-water supply, make sure the water shutoff valve is in
the closed position, refer to Figure 5.
8. Hold off on attaching the “white” PE tube to the water
supply fitting, this water connection will be made in Step 6
– Connect PE Tube.
Inlet (White)
Outlet (Blue) Drain (Red)
Cold Water Supply Connection
(using included water supply fitting)
1/4”
T
I
ubing to
Reverse
Osmosis nlet
Cold Water
Shutoff Valve
C
Water Supply
Fitting
Gasket
Cold Water
Shutoff White
Line
old Water
Figure 4
Figure 5
PE Tube Locking Clip
Open
Close

6
The drain saddle adapter is included with your RO
system. The drain saddle adapter will fit around a
standard 1-1/2” drain pipe.
Shown in Figures 6, 7, and 8, you will install the drain
saddle adapter above the P-trap. Note: If your sink is
equipped with a garbage disposal drain, do not install
the drain saddle adaptor to this drain point. Please
inspect the drain pipe for corrosion and replace, if
necessary.
1. Test fit the drain saddle adaptor around the sink drain
to make sure will it fit properly. The drain saddle adaptor
should be installed approximately 6-inches above the
P-trap, see Figure 6.
2. Make sure the quick connect fitting on the drain
saddle adapter is installed in the direction toward the RO
system for ease of installation of the PE tube.
3. With a pencil, carefully scribe the drain pipe to mark
the location of where the PE tube will connect. See
Figure 7 for location of quick connect fitting.
4. After making your mark on the drain tube, remove
drain saddle adaptor and drill a 3/8” diameter hole in the
drain pipe. Note: Do not drill with the drain saddle
adaptor attached, it may damage the quick connect
fitting. Only drill through one side of the drain pipe.
5. Remove any loose plastic and line up the drain saddle
adapter with the hole you just drilled.
6. Place the two halves of the drain saddle adaptor back
onto the drain pipe. Now fasten the nuts and screws.
Tighten both sides equally to secure the drain saddle
adaptor onto the drain pipe. Do not overtighten. See
Figure 8.
7. Hold off on connecting the “RED” PE tube to the quick
connect fitting on the drain saddle adapter, this water
connection will be made in Step 6 – Connect PE Tube.
The drain saddle adapter is needed for the drain water produced from the Reverse Osmosis
Filter. Please make sure the drain saddle adapter is located above the P-trap, as shown in
Figure 6 and do not connect or install the drain saddle adapter on a drain-line coming from a
garbage disposal.
You will need to select a location to install the reverse osmosis faucet. In most kitchen
installations, the spray hose or soap dispenser is removed and replaced with the RO faucet.
The hole size must be 1-1/4” in diameter. If a spray hose or soap dispenser is not available, you
will need to either drill a hole in the sink or a new hole in the countertop, next to the sink. Note:
When installing the RO faucet in the sink or countertop, please consider hiring a
professional to drill the holes. Drilling surfaces made of stone or solid surface materials
such as granite, marble or plastic resin product, or sinks made of porcelain or stainless
steel may cause permanent damage or irreparable damage to the sink or countertop
surface.
Figure 6
Figure 8
Figure 7
P–Trap
Single Basin
Sink
Double Basin Sink
Under the Sink Installation
Drain Saddle
Adapter
Drain Saddle
Adapter
Garbage
Disposal
Nuts Sink Drain Pipe
3/8” Quick
Connect
Fitting
Drain
Adaptor
Halves
3/8” Hole - Do not drill
through Q.C. Fitting
P–Trap
Do not install drain
adaptor on a line coming
from a garbage disposal
INSTALL DRAIN ADAPTOR
STEP 2 – Install Drain Saddle Adapter
STEP 3 – Install Reverse Osmosis Faucet

7
INSTALL REVERSE OSMOSIS FAUCET
1. The RO faucet is included with your RO System.
Locate and organize the RO installation parts, see
Figure 9 for more details on assembly.
2. Referring to Figure 9, You will need to install the
part in the order shown, Stainless Steel Washer;
Thin Black Washer.
Slide both onto the base of the faucet screw rod.
The thin rubber washer should be sandwiched in
between the faucet top and stainless steel washer.
3. Remove the red protective cap from the end of
the RO faucet screw rod.
4. Now install the RO faucet through the mounting
hole.
5. Under the cabinet install the following compo-
nents in this order: Reference Figure 9: Thick
Black Rubber Washer; Metal Serrated Washer;
Nut.
In the order shown above, slide onto the base of
the RO faucet screw rod.
6. Hand tighten the nut to threaded rod of the RO
faucet until the faucet cannot move freely. Check
the RO faucet to make sure the stainless steel
washer and thin black washer is centered under
the faucet. Once aligned, tighten the nut with an
adjustable wrench.
7. The RO Faucet Base Connector is included with
your RO System. Install this connector to the base
of the faucet. Push connector onto faucet base
until the connector bottoms out, see Figure 9.
8. You will attach the “BLUE” PE tube to the base
of the faucet quick connect connector.
9. After you have inserted the blue PE tube into
the connector, insert the blue PE Tube Lock Clips
into the quick connector end. See Figure 10 for
order of installation.
Each filter is individually wrapped in a plastic protective coating, remove and safely
discard the plastic before installing filter into filter housing. You will find 6-black rubber
O-Rings in a sealed zip-lock back. These will be installed onto the filter housing, see
Figure 11. Note: The RO filter will NOT be installed at this time. We will install the
RO filter after the RO system is flushed with fresh water. Refer to First Time Use
– Flushing the Filters for more information.
Figure 9
Figure 10
STEP 4 – Install Filters
Stainless Steel Tube
Stainless Steel Washer
Thin Black Washer
Countertop
Thick Hard Plastic Washer
Metal Serrated Washer
Nut
Outlet metal pipe
Red Protective Cap
PE Tube Lock Clip
Faucet Base Connector
PE Tube Lock CLip

8
1. Referring to Figure 11, you will install two
O-Rings on each filter housing. Install one O-Ring
seal on the top outside grove of the filter housing.
Gently slide the O-Ring down the outside filter
housing surface until the O-Ring is seated into the
upper grove. The second O-Ring lays on the top
inside end-face of the filter housing. Note: applying
a light amount of food-grade silicone jelly may
be used to help the O-Ring seal better.
2. When placing the filter cartridge into its housing,
make sure that the inner hole of the filter cartridge is
aligned with the cylindrical boss at the bottom of the
filter housing. If not aligned properly, the water filter
will leak.
3. Screw the filter housing assembly, with filters
installed, to the filter head. Turn the filter housing in
a clockwise direction. Once snug to the filter head,
use the Filter Housing Wrench to tighten it another
¼ to ½ of a turn. See Figure 12.
4. Follow these steps to install the stage 1 - PP
Sediment Filter, stage 2 - Pre-Carbon Filter and
Stage 3 - Carbon Block Filter. Refer to Figure 13 for
order of filter installation.
INSTALL THE VERTICAL FILTERS
Figure 11
Figure 12
Figure 13
1
2
3
4
5
6
8
7
1. Post Carbon Filter
2. Reverse Osmosis Filter
3. Fresh Water Storage Tank
4. Support Frame
5. PP Sediment Filter (Stage 1)
6. Pre-Carbon Filter (Stage 2)
7. Carbon Block Filter (Stage 3)
8. Faucet
Top Inside Grove
Top Outside Grove

9
Your RO system utilizes a pressurized tank to store purified water. Because the Reverse
Osmosis process is slow, the fresh water storage tank is pressurized to improve the water
flow at the faucet. After water is dispensed from the RO water faucet, the storage tank will
refill and repressurize, therefore you may hear water flowing through the filtration system
when not in use. The process of purifying water is slow, so water may run for a brief
period of time depending on how much water was dispensed. Note: Be careful not to
overtighten the Shutoff Valve.
1. The Fresh Water Tank Shutoff valve is included with your RO
System. See Figure 14 or the following illustrations.
2. The shutoff valve on the supply tank will need to be air-tight.
3. Apply Tape Seal to the threads of the at the top of the tank.
4. Tighten the shutoff valve clockwise on the fresh water tank
connecting screw, be careful not to cross-thread or overtighten.
5. Connect the “white” PE Tube to the quick connector of the
Fresh Water Tank Connector. After you have inserted the white
PE tube into the connector, insert the blue PE Tube Lock Clips
into the quick connector end.
6. Place the storage tank next to the Reverse Osmosis system.
Place the tank upright.
Install the Pressure Tank
Figure 14
Tubing connector
(Shutoff Valve)
Tank Nipple
Storage
Tank
STEP 5 – Install Fresh Water Storage Tank & Reverse Osmosis System
Illustrations
STEP 6 – Connect PE Tubing
Now is time to connect the PE the white, blue and red PE tubes to the RO filtration
system. Referring to Figures 15, 16, 17 & 18, you will see that the water connections
are clearly marked. NOTE: Please read Step 6 carefully. When all PE tubes are
installed, please inspect all connecting tubes of the unit, make sure no tubes
are bent and are pushed all the way into the water connections.
Fresh Water
Tank Connector
Figure 15 Figure 16 Figure 17 Figure 18

10
H D A
F
E
C
G
B
STEP 6 – Connect PE Tubing Continued
A to B Water inlet from water supply line to the water purifier White PE Tube
C to D RO Waste water outlet to drain saddle adapter Red PE Tube
E to F RO fresh water outlet to RO storage tank White PE Tube
G to H RO fresh water outlet to faucet connector Blue PE Tube
Connection
Points PE Tube ColorDescription
ROUTE WHITE TUBE FROM WATER SUPPLY TO RO
SYSTEM (POINT A to B)
1. Locate the white PE tube and attach one end to the
Reverse Osmosis water inlet connection, Point A, and the
other end to the cold-water supply line under the sink, Point B.
2. At Point A, located on the RO system, you will see a blue
silicone plug and blue label with the words, “Pure Water
Output”. Remove the blue silicone plug by pulling downward.
Note: You may hear air escaping from the water connec-
tor. This is normal.
3. For a professional installation, measure and cut tube
square and to length. Note: To make it easier to move the
RO system around, cut the tube a little longer. This will
make it easier when replacing the filters.
4. Insert the white PE tube from Point B into this water
connection.
Point A
Point B
Cold Water Supply Connection
(using included water supply fitting)
1/4”
T
I
ubing to
Reverse
Osmosis nlet
Cold Water
Shutoff Valve
C
Water Supply
Fitting
Gasket
Cold Water
Shutoff White
Line
old Water

11
1. CONNECT WHITE TUBE FROM RO SYSTEM PURE
WATER OUTLET TO FRESH WATER STORAGE TANK
(POINT E to F)
2. Locate the blue PE tube and attach one end to the Fresh
Water Output, Point E, and the other end to the Fresh Water
Storage Tank, Point F.
3. At Point E, located on the RO system, you will see a blue
silicone plug and blue label with the words, “Pure Water
Output”. Remove the blue silicone plug by pulling out.
4. For a professional installation, measure and cut tube
square and to length. Note: To make it easier to move the
RO system around, cut the tube a little longer. This will
make it easier when replacing the filters.
5. Insert the blue PE tube from Point E into this water
connection.
Figure 19
k
Nuts Sink Drain Pipe
3/8” Quic
Connect
Fitting
Drain
Adaptor
Halves
3/8” Hole - Do not drill
through Q.C. Fitting
Point D
Point C
STEP 6 – Connect PE Tubing Continued Point E
Point F
Tubing connector
(Shutoff Valve)
Tank Nipple
Storage
Tank
CONNECT RED TUBE FROM RO SYSTEM TO DRAIN
SADDLE ADAPTER (POINT C to D)
1. Locate the red PE tube and attach one end to the Waste
Water Output, Point C, and the other end to the Drain
Saddle Adapter attached to the drain line under the sink,
Point D.
2. At Point C, located on the RO system, you will see a blue
silicone plug and blue label with the words, “Pure Water
Output”. Remove the blue silicone plug by pulling
downward. Note: You will notice that the water connec-
tion has a yellow water connection. This is to help you
identify this connection point as the waste water
connection point, see Figure 19.
3. For a professional installation, measure and cut tube
square and to length. Note: To make it easier to move the
RO system around, cut the tube a little longer. This will
make it easier when replacing the filters.
4. Insert the red PE tube from Point C into this water
connection.

12
H D A
F
E
C
G
B
CONNECT WHITE TUBE FROM RO PURE WATER OUTPUT
TO WATER FAUCET (POINT G to H)
1. Locate the white PE tube and attach one end to the RO pure
water output, Point G, and the other end to the RO faucet, Point
H.
2. At Point G, located on the RO system, you will see a blue
silicone plug and blue label with the words, “Pure Water
Output”. Remove the blue silicone plug by pulling out.
3. For a professional installation, measure and cut tube square
and to length. Note: To make it easier to move the RO
system around, cut the tube a little longer. This will make it
easier when replacing the filters.
4. Insert the white PE tube from Point H into the bottom of the
RO faucet. Note: To prevent leaks, please make sure the
white PE tube is properly inserted into the water connec-
tion.
Point G
Point H
Stainless Steel Tube
Stainless Steel Washer
Thin Black Washer
Countertop
Thick Hard Plastic Washer
Metal Serrated Washer
Nut
Outlet metal pipe
Red Protective Cap
PE Tube Lock Clip
Faucet Base Connector
PE Tube Lock CLip
First Time Use – Flushing Stage 1 - 3 Filters
Inspect all connecting tubes of the unit, make sure no tubes are bent. Before using the
machine, the first 3-filters (stage 1, 2 & 3) will need to be flushed with fresh water for
3-minutes. This will prevent carbon particles in the activated carbon filter elements from
entering the RO filter element. Note: When you start to dispense water from the RO
faucet, you will notice the water output will be cloudy at first and then become clear.
Depending on your water pressure, it may take a little longer to flush out all carbon
particles. Flushing the first 3-filters will significantly improve the life of your RO filter
element. When the flushing procedure is complete, you will then install the RO filter.
See the following page for more details on, “How to Install the RO Filter”.
Maintenance and How To Section

13
Figure 20
Figure 21
Figure 22
Please make sure the person performing this process has clean hands while handling or
servicing the inner parts of the filtration system.
1. To begin the flushing process, you will need to make sure the RO fresh water storage tank
valve, letter F in the above picture, is in the closed position. Note: Please make sure the RO
filter is not installed during the flushing process.
2. You will need to open three water valves: 1) open the inlet water supply fitting, letter A in the
above picture, and 2) the sink main water inlet valve and 3) the RO faucet.
3. You should start to hear water running through the RO system. Note: you may hear strange
noises and air passing through the RO system, this is normal.
4. Water will start to flow out from the RO faucet, slowly at first and then once pressure builds
the water will start to flow faster. Note: Make sure the RO faucet is pointed to sink basin,
water will start to flow through the filters.
5. Flush the unit for three-minutes until the water becomes clear. Note: The water will appear
cloudy and then will start to clear up. If after three-minutes the water is still cloudy, continue
running water.
6. When the water becomes clear, close the inlet water supply fitting, letter A in the above
picture. You will need to install the RO filter. Note: Before removing the RO cap, you will need a
bucket and towel to capture any water that may be in the RO filter housing. Please make sure
all water is removed from the RO filter housing.
Tubing
Linlet
Cap
O-Ring
Housing
Membrane
HOW TO INSTALL THE RO FILTER
1. Locate the RO Filter by Referring to Figure 20.
2. To install the RO Filter, first remove the blue PE Tube Locking Clip
and white PE tube that is connected to the right side of the RO filter
housing.
• The white PE tube is inserted into a quick connect housing.
• To remove the white PE tube, remove the blue PE tube locking
clip, and press inward on the Collet (dark grey ring) that the PE
tube is inserted into.
• Gently pull out the white PE tube from the water connector. See
illustration to the right for details.
How to Connect and Disconnect the Tubes
3. Remove the filter housing cap by unscrewing counterclockwise.
Inspect the underside of the housing cap to make sure there is an
O-Ring installed. Inspect the filter housing to make sure there is an
O-Ring installed. See Figure 21.
4. NOTE: For your safety, the RO system is wet tested prior to
shipment, so you may notice some water drops are still inside
the filter housing.
5. Reference Figure 22, install the RO filter by inserting the "small
head" end of the membrane firmly into the housing. NOTE: one end
of the RO membrane has a thick-rubber gasket, this should be
inserted towards the filter-cap end.
6. Before twisting the housing cap back on, make sure the O-Ring is
seated at the end of the membrane housing, which is very important
to avoid leaking and damage to the O-Ring.
7. Place the membrane housing cap back and pre-tighten it with
hand, then tighten it with the housing wrench. Do not over tighten.
8. Reconnect the white PE tube to the quick connect fitting and
install the blue PE tube locking clip.
9. Please make sure the white PE tube is fully engaged into quick
connect fitting or water will leak from the fitting.
Collet O-Ring
Flushing Stage 1 – 3 Filter, Steps

14
Flushing All Filters in System
Now that Stage 1 – 3 filter are flushed, we will now need to flush out the RO filter membrane.
Please read through the following steps.
1. With the RO filter installed, open the RO fresh water storage tank water valve, turn on RO
drinking faucet, open the water inlet valve slowly check for water leaks. If so, check for the
following:
• The PE water tube is not completely inserted into the quick connector.
• O-Ring in the filter housing is not in the proper position or twisted.
• Filter Housing/cover is not properly tightened or not aligned with threads.
2. Please close the RO fresh water storage tank valve, RO water will slowly drip out of the
drinking faucet, keep the drinking faucet draining for at least 15-minutes to flush the whole
filter element system. NOTE: It is important that the RO Fresh Water Storage Tank water
valve is in the CLOSED position during the 15-minute flush process.
3. After 15-minutes, please close the RO faucet and open the shut off valve of the RO fresh
water storage tank. The RO fresh water storage tank will begin to fill with fresh RO water.
Note: This process may take 1-2 hours, depending on your water temperature
(40F-100F, the higher the temperature, the faster the speed) and source water TDS (max.
750ppm, the lower the TDS, the faster the speed). After the storage tank is full, the unit
will automatically shut down.
4. After the storage tank is full, turn on the RO faucet to completely drain the first storage tank
to empty, when no water comes out from the RO faucet, it means the tank is emptied. Then
turn off the RO faucet to let the system start producing RO water again.
5. NOTE: It is very important to check for water leaks every day for the first two weeks
after installation to ensure the normal operation of the system.
Your Comfee CMP10 Reverse Osmosis filtration system is designed for low maintenance.
Replacement of Filter Elements
Stage 1
PP Sediment
Filter
Stage 2
Pre-Carbon
Filter
Stage 3
Carbon
Block Filter
Stage 4
RO Filter
Stage 5
Post Carbon
Filter
Congratulations, you have successfully installed your
Comfee Reverse Osmosis Water Filtration System!

15
Stage 1
PP Sediment
Filter
Stage 2
Pre-Carbon
Filter
Stage 3
Carbon
Block Filter
Replacement of 1st to 3rd-Stage Filter Element
If the flow or quality reduction is found, it should be replaced every 6 months or earlier. The
frequency of replacement depends on your water consumption and the quality of source
water. In order to protect the reverse osmosis membrane from chlorine and other harmful
contaminants, it is necessary to replace the filter element according to its service life.
How to Replace 1st to 3rd-Stage Filter Elements:
Please be careful when replacing the filters. To help reduce the water pressure, it is
recommended to turn off the main water supply and close the RO fresh water inlet valve.
When both valves are off, open the RO faucet to release any pressure. You will need your
filter housing wrench for this filter removal process.
1. Close the sink main water inlet valve, the RO water inlet valve and the RO fresh water
inlet valve on the RO fresh water storage tank.
2. Please open the RO water faucet to reduce the system pressure, and place a towel under
the machine. It is a good idea to have a bucket handy to dump the water in the filter
housing. Note: When you remove the water filter housing, water will be present in the
filter housing. Carefully tip the filter housing into your bucket to empty the water.
3. If the unit is installed under the sink with enough space or hung on the wall, the filter
housing may be directly unscrewed to replace the filter element. Or, you will need to remove
the unit and replace the filter element. Be careful for all the tubing connections when
removing the machine.
4. Unscrew the housing of the filter element counterclockwise with the filter housing wrench.
Note: For more information on how to install the filters, Refer to Step 4 – Install
Filters.
Replacement of the 4th Reverse Osmosis Filter Element
Generally, the RO membrane is replaced every 2-3 years, and the TDS value is checked at
least once a month to monitor the performance of the system. Under normal circumstances,
the desalination rate of the unit will be greater than 90%.

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How To Replace The RO Membrane Filter Element
1. Your Reverse Osmosis membrane usually has a useful life of about 2-3 years. The useful
life of filter membrane depends on the quality of source water, household water consumption
and the frequency of replacing 1st to 3rd filter element. NOTE: In order to ensure the
performance of the system and the purity of water, please replace the 1st to 3rd filter
element as planned.
2. Please open the RO water faucet to reduce the system pressure, and place a towel under
the machine. It is a good idea to have a bucket handy to dump the water in the filter housing.
Note: When you unscrew the filter cap from the RO membrane filter housing, water will
be present in the filter housing. Place a water bucket close to the RO filter cap to
capture any water which may spill.
3. Remove the PE tube from the RO filter housing and unscrew the filter housing counter-
clockwise with the housing wrench.
4. It may be necessary to remove the RO filter membrane with a pair of pliers. Carefully pull
on the filter end to slide the filter out of the filter housing. Note: The RO filter has a very
tight fitting inside the RO filter housing. Pulling out the RO filter membrane can be
difficult.
5. Inspect the inside of the RO filter housing. Please rinse the inside of RO filter housing
thoroughly with warm soapy water. Use a small amount of dishwasher detergent to clean the
inside of the RO filter housing.
6. Open the vacuum-tight package of the new reverse osmosis membrane, remove the RO
membrane and insert it into the filter housing. Note: Please try to avoid touching the filter
membrane with your bare hands. Using a paper towel to wrap around the end of the
filter to help you install the filter.
7. Inspect the filter cap O-Ring and internal O-Ring. Make sure both are present and installed
correctly. Note: We recommend replacing the O-Ring every 3-years to prevent water
leaks caused by an aging O-Ring.
8. Install the RO membrane housing cap and pre-tighten it by hand, and then tighten it by
1/4-½ turns with a housing wrench, without over-tightening.
Replacement of the 5th Stage Post Carbon Filter Element
Note: Please replace the post carbon filter element every 12 months. To help you
remember when the filter was installed, mark the outside of the filter housing with
the installation date.
1. Remove all tubes connected to the post carbon filter housing.
2. Replace the whole filter (including the housing) with a new one, then reconnect the tubes.

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Filter Element Name Recommended Life Function
Stage 1 -
Sediment Filter (PP) 4 ~ 6 Months
6 ~ 12 Months
6 ~ 12 Months
24 ~ 36 Months
6 ~ 12 Months
Stage 2 -
Pre-Carbon Filter
Stage 3 -
Carbon Block Filter
Stage 4 - Reverse
Osmosis Membrane
Filter Element
Stage 5 -
Post Carbon Filter
Trouble Shooting
Problem What To DoPossible Causes
Flow reduction
of pure water
outflow
High TDS in
RO water
Water Leakage
Blocked filter element
The filter element exceeds life
requirements
The main water supply inlet
valve or RO inlet valve or RO
fresh water storage tank valves
are not fully open
The water in the pressure
tank is run out
Need to flush or replace the filter
element
Replace the filter element
Check condition of all valves to make
sure they are fully open
RO is refilling RO fresh water tank and
water pressure is low. Once RO fresh
water tank is filled, water pressure
should return to normal.
Failure in the RO
membrane filter element
Replace the RO membrane filter
element
The unit is out of service
for a long time (3 Months)
Allow RO faucet to flush for 3-5
minutes
High TDS in Municipal
tap water
The system will provide a 90%+ TDS
rejection rate when working properly.
Meaning if your Municipal tap water is
500ppm, then the purified water is
less than 50 ppm.
Poor assembly of O-Ring
seal between filter
housing and the cap
Need to reassemble O-Ring between
the housing and housing cap and lock
it with the filter housing wrench
Poor tubing connections
Reduces sand, silt, scale, and rust particles
in residential tap water. The filter is made of
spun polypropylene fibers for resistance to
chemicals and bacteria.
Reduces fine sediment, chlorine taste and
odorin residential tap water
Reduces fine sediment, chlorine taste and
odor in residential tap water
Filtration precision effective: 0.001-0.0001um.
Reduction of harmful substances in water
such as pesticides, bacteria, viruses and
heavy metal ions.
Eliminates unpleasant smells from water
and enhance water flavor.
Check the PE tube connections to
make sure the tube is seated all the
way into the water connection.
Filter Element Parameters

The product is subject to change without notice.
Please keep this manual properly.