To our customers!

Thank you for choosing Cuckoo Water Purifier.

Please keep this User Manual (including the Warranty) for your reference. This manual will guide you when you have any questions or when the product does not work properly.

Product Benefits

• 4-Step Filtration System
  The 4-step filtration system of CUCKOO Water Purifier makes clean and healthy water.
• Stainless Steel Water Tank
  Using a stainless steel water tank improves the water quality and cleanliness.
• Economical and Eco-Friendly Water Filtration System
  The Eco-friendly CUCKOO Nano Positive filter helps filter out contaminants but does not waste any water during the filtration process.
• External Valve (for separate sale)
  The external valve allows for an additional connection to the filtered water supply.
• Operation Status Indicator
  For added convenience, you are able to check the operation status through the operation status indicator.
• Safety Button
  The safety button prevents children or others from the burn hazards associated with hot water.
• Stylish design
  Its slim and stylish shape matches any place.
• Individual Power buttons for Hot and Cold Water
  Energy efficient design with individual "hot" & "cold" power buttons.
• Room/Cold Switching Valve
  With turning the Switching Valve to Room(△), Slightly Cold, or Cold(※), you can enjoy your choice of water for your liking.

Warnings for Safe Use

• Please comply with the 'Warnings for Safe Use' to ensure safe and proper use of the product and prevent accidents and dangerous situations.
• The 'Warnings for Safe Use' section consists of 'Warning' and 'Caution' items, which are defined as follows.

About Power Supply

Cautions for Safe Use

Name of Parts/Components Information

Name of Parts

1. 1 Hot Water Indicator light
2. 2 Cold Water Indicator light
3. 3 Room/Cold Switching Valve
4. 4 Safety Button
5. 5 Hot Water Faucet
6. 6 Room/Cold Water Faucet
7. 7 Hot Water Lever
8. 8 Room/Cold Water Lever
9. 9 Drip Tray

Components Information

• User Manual

• Service Card

• External Valve (Optional)

Filtration Circuit / Filtration System

Filtration System

Details to Check Before Installation

Cautions when installing the Product

1. Do not place the product in direct sunlight or near a heating products.

   • This may cause color changes or fire.
2. Allow installation space.

   • To allow convenient replacement of the filters, make sure the product is placed 8 inch away from the wall and that the distance of the water supply hose connecting the product to the water supply valve is less than 200 inch.
3. Avoid areas with high moisture/humidity, dust or water splash.

   • This may cause a malfunction
4. Avoid areas that are uneven, inclined or not solid.

   • They may cause fire or a damage to the product.
5. Avoid areas where the temperature falls below 0 ℃.

   • This product is for indoor use. If the surrounding temperature falls below 0°C, it may cause the filters and/or the internal components to freeze, causing breakdown of the product.

Cautions on Moving the Product

Please be careful when moving the product.

• Do not tilt the product at an angle over 45°.
• Wait at least 30 minutes before plugging the power cord after moving the product.

Cautions on Connecting Pipes

Connect the tube to the cold water pipe.

• Connecting the hose to the hot water pipe may cause damage to the filter or breakdown of the product.
• Refer to How to Install the Product for how to connect the tube.

How to Install the Product

1. Turn off cold water supply to the sink

   • Look under the sink, locate the cold water shut off valve for the cold water inlet supply to the faucet. Turn the shut off valve clockwise to close the water flow from cold water inlet water supply to faucet.
2. Release Faucet Pressure

   • After closing the cold water supply (no water should be able to flow to the faucet), open the faucet handle as if to dispense cold water. This will release any existing pressure in the line. Some water may drip out. Make sure to open the faucet as if dispensing COLD WATER.
3. Disconnect water feed line from under sink cold water inlet to faucet

   • Spin the riser nut counter clockwise to disconnect the faucet feedline from the cold water shut off valve and cold water inlet source.
4. Attach T-Valve to cold water inlet

   • With the cold water inlet remaining closed, screw the T-valve onto the cold water inlet source (same location that the faucet feedline was removed from). Screw the T-valve on tight with a wrench and ensure proper connection.
5. Re-Connect the faucet feed line to the newly attached T-valve

   • Connect the riser nut (from faucet feedline) to the open end of the T-valve and tighten with a wrench. Make sure this connection is secure.
6. Connect 1/4" Water Line to T-valve

   • Attached 1/4" water line to the quick connect adapter on the T-valve, push the 1/4" line fully onto the quick connect fitting nub. After pressing the water line fully onto the quick connect nub, make sure to use the locking nut properly to secure the 1/4" water line in place on the quick connect fitting.
7. Connect 1/4" Water Line to Water Purifier

   • Locate the "tap water inlet" on the water filtration unit and insert the other end of the 1/4" water line (same line connected to the T-valve quick connect nub) into the quick connect valve at the back of the water filtration unit. Ensure you attach to the inlet line and have a secure connection by lightly tugging on the water line to ensure it remains locked into the fitting at back of the filtration unit.
8. Double Check all connections

   • Check all water lines to ensure the connections are secure
9. Turn on Cold Water Supply

   • Open the cold water inlet supply by turning the handle counter clockwise (this is the same valve that was turned off in step 1). This will allow was to flow though the newly attached T-valve, to the sink faucet and to the water purifier. Check all water connections to ensure there are no leaks.
10. Flush Filters

    • Allow the hot and cold water tanks to fill completely and empty the tanks through the hot/cold dispense handles on the front of the water purifier. Complete this process three times.
11. Turn on the Hot/Cold Function

    • After flushing the filters, allow the hot and cold tanks to fill completely. Once full, turn on the Hot/Cold buttons on the back of the machine to activate the hot tank and the cold tanks. It is especially important the hot tank is full before turning on the hot function.

Details to Check Before Use

1. Open the Tap Water Supply Valve.

   • First, open the Tap Water Valve and check if the water supply is cut off. Then, open the Tap Water Supply Valve.
2. Connect the power supply.

   • The product is exclusively use for 120V 60 Hz. Connect it to the exclusive power outlet.
   • After checking if the water supply is cut off, connect to the power supply.
   • Before connecting the power, check if the "Cold" & "Hot" buttons are turned off.
3. Press the "Cold" & "Hot" switches to turn them on.

   • Press the "Hot" switch if you want to dispense hot water, and press the "Cold" for cold one. Check that the "Hot" or "Cold" indicator is lit up.
   • Purified water will be supplied, unless you press any button.

4. After long discontinued use or upon installation, completely drain out the tank. Fill it with water and drain it again before use.

How to Use

How to Get Purified Water (Room temperature)

1. Turn the Select lever towards the room water.
2. Gently push the cold Water Lever.
3. Lift the cold water lever up at a 90° angle, then continuous extraction of purified water is available.

   • Please be cautious that if the Hot water or Cold water button is turned off, the temperature of purified (room temperature) water could be become a bit hot or a bit cold.
   • ※ Room temperature water is mixture of Hot water & Cold water, so please be cautious that if Hot water or Cold water switch turned off, than temperature of room water could be become bit hot or bit cold.

How to Get Cold Water

1. Press the "Cold" button to turn it on. It takes about 60 minutes before the compressor gets fully warmed up and starts to operate.

   • Before turning on the "Cold" button, make sure the water supply is available and the tap water supply valve is on.
2. Turn the Select lever towards the Cold Water.
3. Gently push the Cold Water Lever.
4. Lift the cold water lever up at a 90° angle, then continuous extraction of cold water is available.

   • Make sure that you turn the switching valve completely until it indicates the "Cold" symbol precisely. As you turn the valve clockwise, the temperature changes in the following order: Room (○)-Slightly Cold-Cold (※)

How to Clean the Cold Water Tank

How to Use External Faucet (Optional)

1. Move the Lever of the External Valve connected to the sink down, and then you can use the External Faucet.

   • If you have not used the External Faucet for a long time with the power connected, the water of the External Valve may be warm because of the inside heat caused by the operation of the Heater and the Compressor.
   • ※ If you rub the external valve with a brush or sponge, it may damage the plating of the valve's outer surface and may cause the mineral scale to the inside of the external valve.

How to Clean the Cold Water Tank

1. First, close the Tap Water Supply Valve.
2. Press the Cold and Hot switches to turn them off.

   • Make sure that the "hot" and "cold" lights are turned off.
3. Unplug the power plug for safety.
4. Drain the cold water tank through the cold water faucet.

   • Before draining, turn the Room/Cold Switching Valve to Cold.
   • Drain water into a clean bowl as it will be used to clean the tank.
   • Approximately 1.3L of water will be drained, so use a bowl in an appropriate size.
5. Connect the hot water drain tube to the hot water faucet and the hot water drain in order to drain out all the hot water from the hot water tank.

   • Be careful as the hot water is extremely hot.
   • Approximately 1.0 L of water will be drained from so prepare a bowl in an appropriate size.
   • If you drain hot water before draining cold water, approximately 1.3L of water will be drained. Drain cold water before draining hot water. (After hot water is completely drained, close the stopper of the Hot Water Drain.)
6. Remove the lid cover of the product.

   • Requires a phillips head "+" screwdriver.
7. Remove the cover from the cold water tank.

   • The upper part of cold water tank is slightly warm because it contains purified water and hot water steam.
8. Remove separator from the cold water tank by pulling the separator.

   • When you remove the separator and clean the inside of the tank, please wear gloves to ensure sanity.
9. Wipe out the inside of the tank with a clean and soft cloth.

   • Make sure no foreign substances are left inside the tank.
   • ※ Scale may form inside the tank due to minerals melted in the water. When you use the water purifier infrequently, drain water through the cold / hot water faucet once every two to three days. Then you can prevent scale from forming. (It is best to use the purified water within a short period of time.)
10. Pour the drained water (refer to Step. 4) into the tank and wash it.

    • Completely drain the used water through the cold water faucet.
    • Remove the hot water drain ball valve (end cap) and completely drain the water that flowed into the hot water tank. Then close the cap.

How to Clean Tray / How to Clean Faucet

How to Clean Tray

1. Remove the Tray

   • Hold and move the tray upwards to separate the tray.
2. Remove the Tray Cover

   • After removing the tray, pull from the hole of the cover on the top of the tray to separate the tray cover.
3. Clean the Tray

   • Throw away the stagnant water in the tray, and remove the remaining with a soft cloth, etc.
4. Reassemble the Tray

   • After finishing the cleaning of the tray, assemble it in the reverse order of dismantling.

How to Clean the Faucet

1. Turn the faucet cover counterclockwise and remove it.
2. Turn the faucet outlet counterclockwise to remove it.
3. Clean the cover and outlet with running water.

   • Use plastic gloves to enhance cleanliness.

How to Replace the Filter

How to replace the Filters(CUCKOO Filter (genuine) must be used)

1. Close the water supply valve.
2. Remove the remaining pressure inside the pipe.

   • Drain approximately 3–4 cups (500cc) of water from the cold water faucet.
3. Turn off the "Hot" & "Cold" buttons, and unplug the product.
4. For the Half type, remove the lid cover, and for the Stand Type, remove the lower front cover for filter replacement.

   • Requires a phillips head "+" screwdriver.
   • Make sure to remove the tray in advance.
5. Drain out all the water remaining in the purifier.
6. Before replacing the filter, detach the connecting tube of the filter you wish to replace.

   • Detach the connecting tube using an appropriate tool (fitting separator). Damage to the fitting and/or connecting tube may cause water leak.

7. Connect the outlet of the previous filter to the inlet of the replaced filter and connect a separate water extraction tube to the outlet of the replaced filter. Then, open the tap water supply valve to allow water to pass through.

   • Especially for the Sediment 3.0 Filter, allow water to pass through for about 5 minutes.
   • Connect the Pre-Carbon Block 2.0 Filter and Natural 2.0 Filter to the previous filters, and allow water to pass through for about 7 minutes.
   • Connect the Nano Positive Filter to the previous filters, and allow water to pass through for about 10 minutes.
   • Make sure for water being passed through for more than the recommended time to ensure the desired water quality.
   • Then supply filters with water, and check for any water leaks by using a dry cloth.
8. (Stand Type) Place the lower front cover again and fasten it with screws.

   • Find the accurate place of the screws to ensure the cover to be fastened properly.
   • Requires a phillips head "+" screwdriver.

9. (Half Type) Place the lid cover again and fasten it with screws.

   • Find the accurate place of the screws to ensure the cover to be fastened properly.
   • Requires a phillips head "+" screwdriver.

10. Turn on the tap water supply valve and fill the tank with water up to the limit then drain it out. Repeat twice.

11. After filling the tank with water, connect the power plug.

Expected Filter Replacement Cycle

Recommended Filter Replacement Cycle

The filter replacement cycle is determined with the use of 10 L per day at home as the standard, and may be affected by the condition of tap water.

Recommendations

Filtration Capacity
Filtration Capacity is the recommended amount of usage for each filter. This is to make sure the filters are used to their fullest potential.

Filter Replacement Cycle
The filter replacement cycle means the expected cycle (period) that the filters can perform properly. The filter replacement cycle may be reduced due to its high usage as its standard of cycle has been set under condition that the supply water is tap water with about 10L (drinking water (for four people)) used per day.

Please Check Before Asking for Support

▼ When the Water Purifier is not used properly, in compliance with the User Manual, the product may operate abnormally even if it is not broken down. In such case, please take the following instructions accordingly. If you cannot solve the problem, please visit CUCKOO website and contact customer service.

Product Specification