Dear customers!

Thank you very much for using the CUCKOO Electric Water Purifier.

Please keep this manual (including the warranty) for future reference. It will be helpful if you have questions or experience any issues with the product's functions.

Features and Benefits of CUCKOO Electric Water Purifier

Product Benefits

• The Multi-Stage Filtration System Provides you and your family with nutritious, great-tasting drinking water.
• Electric Water Purifier You may drink water that has been filtered using an instantaneous cooling or purification method, available as cold or room temperature water.
• Water Purifier Featuring an Ultraslim Design and Multi-Functionality Cold water, room temperature water, and cleansing water are all available in a single purifier. Thanks to its slim and stylish design, it helps make more efficient use of space.
• Electrolytic Cleansing System An electrolytic cleaning system enables the clean and safe use of the water purifier. The cleansing water is dispensed through the sink faucet and can be used to wash food ingredients and kitchenware.
• Economical and Eco-Friendly Water Filtration System An extremely economical and eco-friendly water purification system, which produces no wasted water in the process of water filtration, has been selected.
• Button Lock/Functional Lock To prevent potential accidents as a result of product misuse by children or the elderly, Button Lock and Functional Lock (cleansing water) have been added.
• Water Leak Prevention System Water leakage that may be caused during product usage is detected and prevented to enable safe use of the water purifier.
• Non-stop Dispensing Function You can continuously dispense cold water and room temperature water.
• Fixed Quantity Dispensing Function It is convenient to be able to dispense a fixed quantity, either One Cup (about 250cc) or Half Cup (about 120cc), of cold water or room temperature water.

Warnings for Safe Use

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

About Power

About Installation

During Use

Cautions for Safe Use

Part Names and Accessories

Part Names

<Top Side>

• Function Operation and Display

<Front and Back>

• Faucet
• Cold Water, Room Temperature Water Select and Dispense Button
• Tap Water Supply
• Sink Faucet
• Cleansing Water
• Drain
• Cooling Water Drain
• Power Cord

<Details About Display Panel>

1. 1 Time Display Panel
2. 2 Energy Save/Setting Button
3. 3 Faucet Cleaning Button
4. 4 Cleansing Water Button
5. 5 Self-Clean/Timer Button
6. 6 Lock Button
7. 7 Two Cups Select Button
8. 8 Half Cup Select Button
9. 9 One Cup Select Button
10. 10 Non-Stop Button

1. 1 Room Temperature Water (Lamp: WHITE) / Cold Water (Lamp: WHITE) Select Button
2. 2 Dispense Button
   ► Room Temperature Water (Lamp: GREEN)
   ► Cold Water (Lamp: BLUE)
3. 3 Faucet

Accessories

• User Manual

• Service Card

• External Valve (Optional)

• Cleansing Cup

  If it is lost, contact to Customer Service Center to purchase a new one

Filtration System

※ Using a non-genuine filter or using a genuine filter beyond its recommended lifespan may reduce filtration performance.

How to Install the Product

Video Tutorial

Installation Steps

1. Install the Tap Water Supply Valve and turn it to CLOSE.

   • Please make sure that you use tap water from the water supply. Do not use other water sources, such as groundwater.
2. Connect the Tap Water Supply Hose to the inlet and the Drain Hose to the drain.

   • (When installing the sink faucet) Connect the sink faucet connection hose, sink faucet dispensing hose and cleansing water hose to the sink faucet connection area.
   • Fix the Drain Hose so that water discharged from the hose does not splash to the surroundings.
   • Do not place the Drain Hose above the installation surface or connect it to the water purifier over a distance of 9.8ft(3m) or greater.
   • When connecting the drain hose to the drain while letting the hose touch the floor of the kitchen, etc., do not lift it 11.8in(30cm) or higher from the floor.
3. Turn the Tap Water Supply Valve to OPEN.
4. Connect the power.
5. Use the Auto Filter Cleaning function to clean the filter (regarding the Auto Filter Cleaning, refer to the How to Use Auto Filter Cleaning Function section).

Checklist Before Use

1. Open the Tap Water Supply Valve.

   • Open the Tap Water Supply Valve, and check if there is water leak on each connection part.
   • Tap Water Supply Valves and water (inlet) and drain of the product
2. Turn the Close lever of the filter door on the right side of the product to the CLOSE direction.

   • Water is supplied to the water purifier.
3. Connect the power.

   • This product is exclusively for USA:120V / Australia:230V. Please make sure to plug it into a proper outlet.
4. Empty out the tray on a regular basis.
5. Exchange and manage the filter on a regular basis.

   • Please clean and replace the filters regularly so that you can always enjoy pure and clean water.
   • Regarding the filter replacement cycle, refer to the Expected Filter Replacement Cycle section.

How To Use

To Set Functions

It is the mode in which it waits for cold water, room temperature water or cleansing water to be dispensed. The display lamp on the front section is turned on based on the selected function.

You can set the function by pressing the [Energy Save/Setting] button for 3 seconds in Standby Mode.

• Press the [Dispense] button once to dispense a fixed quantity of water.
• Select the Half Cup and press the [Dispense] button once to dispense about 120cc of water.
• Select the One Cup and press the [Dispense] button once to dispense about 250cc of water.
• Select the Two Cups and press the [Dispense] button once to dispense about 500cc of water.
• Select the [Non-Stop] button and press the [Dispense] button to dispense water continuously.

• The water is dispensed while you are pressing the [Dispense] button.
• Press the [Dispense] button for two seconds, and the product will be converted to Manual Dispensing status. And the water will be dispensed while you are pressing the [Dispense] button.

How to Set Cold Water Function

1. Please be on standby and then press the [Cold Water] button for 3 seconds.

   • After 3 seconds, enter the Cold Water Temperature Setting Mode.
   • While the [Cold Water] button is pressed, the Voice Guide announces “Selecting Cold Water Function.”
2. When entering Cold Water Temperature Setting Mode.

   • The Voice Guide announces “Cold Water Temperature Setting Mode.” and “Function setting is available by pressing the blinking button.”
   • The display located top of the product shows the current cold water temperature level.
3. Press the [Cold Water] button to set the Cold Water Temperature Level.

   • Can change current cold water level setting by pressing cold water button each time. Ex) “1” → “2” → “3” → “OFF” → “1” … Level “3” is default.
4. After selecting the desired cold water function, press the [Dispense] button to save.

   • Voice Guide announces “Set-Up completed.”

How To Dispense Cold Water

1. Press the [Room Temperature Water/Cold Water] button and select Cold Water.

   • The Voice Guide will say “Cold Water.”
2. How to Dispense Fixed Quantity

   • Select the desired quantity from among the buttons of “Half Cup,” “One Cup,” “Two Cups” and “Non-Stop.”
   • Press the [Dispense] button once. Cold water will be dispensed.
   • When the selected quantity of water is dispensed, the water dispensing will end.
   • If you press the [Dispense] button or any other button while the product is dispensing a fixed quantity of water, the water dispensing will end.
3. How to Dispense Manually

   • Press the [Dispense] button. Cold water will be dispensed.
   • If you keep pressing the [Dispense] button for two seconds or longer, the product will be changed into the Manual Dispensing status.
   • The Voice Guide will say “Water dispensing during pressing”
   • If you stop pressing the [Dispense] button during the Manual Dispensing, the water dispensing will end.
4. While cold water is being dispensed, a blue light is turned on at the outlet. (When the Mood function is turned OFF, the lamp will not be turned ON.)

How To Use Room Temperature Water

1. Press the [Room Temperature Water] button and select [Room Temperature Water].

   • The Voice Guide will say “Room Temperature Water.”
2. How to Dispense Fixed Quantity

   • Select the desired amount using the buttons for “Half Cup,” “One Cup,” “Two Cups,” or “Non-Stop.”
   • Press the [Dispense] button once. The room temperature water will be dispensed.
   • Dispensing will automatically stop once the selected quantity is reached.
   • If you press the [Dispense] button or any other button while dispensing a fixed amount, the water will stop immediately.
3. How to Dispense Manually

   • Press and hold the [Dispense] button for 2 seconds or more to switch to Manual Dispensing mode. The Voice Guide will say “Water dispensing during pressing.”
   • Releasing the [Dispense] button in Manual mode will stop the water flow.
4. While room temperature water is being dispensed, a green light turns on at the outlet. (When the Mood function is turned OFF, the lamp will not turn on.)

How to Use Hidden Button Function

1. If you’re short-handed or water begins to overflow, press the Hidden button to immediately stop water dispensing.

   • Pressing the area indicated by the arrow will stop dispensing, whether it’s room temperature or cold water.

How to Use Cleansing Water Lock

1. Press and hold the [Cleansing Water] button for about 3 seconds in Standby Mode to activate the Cleansing Water Lock. (Once activated, the Cleansing Water button cannot be used.)

   • If the [Cleansing Water] button is pressed while locked, “Loc_” will be displayed and the Voice Guide will say “Locking cleansing water.”
   • To cancel the lock, press and hold the [Cleansing Water] button again for about 3 seconds. “Un_Loc_” will be displayed and the lock will be released.

How to Use Cleansing Water (when installing a sink faucet valve)

1. Click the [Cleansing Water] button and select cleansing water.

   • When pressed, the [Cleansing Water] indicator will light up.
   • The Voice Guide will say “Cleansing water mode is selected.”
   • Once the sink faucet lever is opened, cleansing water is dispensed.
2. How to End the Dispensing of Cleansing Water.

   • Press the [Cleansing Water] button. The display lamp will turn off.
   • The Voice Guide will say “Cleansing water mode canceled.”
   • Close the sink faucet lever.
   • The Voice Guide will say “Start sink faucet line cleaning.”
   • Once complete, the Voice Guide will say “Sink faucet line cleaning completed.”

※ Cleansing water is not for drinking. Prevent anyone from consuming it. (CUCKOO cleansing water complies with the “Drinking Water Management Act” and is safe for use, but should not be ingested.)

How to Use Self Cleaning Reservation Function

1. If the [Self Clean/Timer] display lamp is ON in Standby Mode, the Self Cleaning Reservation function is activated.
2. If the [Self Clean/Timer] lamp is OFF, press the [Self Clean/Timer] button to activate it.

   • The Voice Guide will say “Self cleaning set-up completed.”
   • The [Self Clean/Timer] display lamp will turn ON.
3. To cancel the Self Cleaning Reservation, press the [Self Clean/Timer] button while the lamp is ON.

   • The Voice Guide will say “Self cleaning reservation canceled.”
   • The [Self Clean/Timer] display lamp will turn OFF.

How to Move Faucet

<Move up and down>

Gently lift or lower the faucet to adjust its height.

<Move front and back>

Slide the faucet forward or backward as needed for positioning.

How To Use the Immediate Self Cleaning Function

This function allows the user to start Self Cleaning immediately—without scheduling it through the Self Cleaning Reservation.

• The method and duration of cleaning are the same as Reserved Cleaning.

1. Press and hold the [Self Clean/Timer] button for about 3 seconds in Standby Mode.

   • The Voice Guide will say “Start self cleaning.”
   • The [Self Clean/Timer] display lamp will turn on, and the progress will be shown on the display.
2. To cancel Self Cleaning, press the [Self Clean/Timer] button during the cleaning process.

   • The Voice Guide will say “Self cleaning canceled,” and the cancellation will begin.
   • The display will show the cancellation progress.
   • Depending on the stage of cleaning, it may perform follow-up actions like rinsing and draining before returning to Standby Mode.
   • ※ While Self Cleaning is in progress, do not dispense water through the sink faucet.

How To Use the Immediate Faucet Cleaning function

1. Place the cleansing cup.

   • Before placing the cup, return the faucet to its original position.
   • If the faucet is not properly positioned, the cleansing cup may not be detected.
2. Press the [Faucet Cleaning] button for about 3 seconds in Standby Mode.

   • The Voice Guide will say “Start faucet cleaning.”
   • The [Faucet Cleaning] display lamp will turn on, and the progress will be shown.
3. To cancel the cleansing operation, press the [Faucet Cleaning] button during a Faucet Cleansing operation.

   • The Voice Guide will say “Faucet cleaning canceled,” and the cancellation process will begin.
   • The display will show the cancellation status.
   • During cancellation, water will be dispensed to clean the faucet—do not remove the cleansing cup at this time.
   • ※ Cleansing water is not for drinking. Prevent anyone from consuming it.

How to Use Power Save Function

This feature reduces standby power and dims the display lamps to save energy.

1. To activate Energy Save Mode: When the [Energy Save/Setting] display lamp is OFF, press the [Energy Save/Setting] button.

   • The [Energy Save/Setting] display lamp will turn ON, and within one second, all display lamps will turn off.
   • The Voice Guide will say “Energy-Eye Function Selected.”
   • If the night detection sensor senses darkness for an extended time, Energy Save Mode will turn off all display lamps except the [Dispense] display and mood lamp.
   • While Energy Save Mode is active, pressing a button will temporarily turn on the display. (If no button is pressed for a while, the lamps will turn off again.)
2. To cancel Energy Save Mode: When the [Energy Save/Setting] display lamp is ON, press the [Energy Save/Setting] button again.

   • The [Energy Save/Setting] lamp will turn OFF, and within one second, all display lamps will turn on.
   • The Voice Guide will say “Energy-Eye Function Canceled.”

How To Use the Button Lock function

This function helps prevent accidental operation by children or during cleaning. When enabled, all button inputs are disabled.

1. To activate Button Lock: Press and hold the [Lock] button for 3 seconds while in Waiting status.

   • If the button is pressed during Button Lock, “Loc_” will appear and the Voice Guide will say “Button is being locked.”
2. To cancel Button Lock: Press and hold the [Lock] button again for 3 seconds.

   • “Un_Loc_” will appear and the Button Lock will be canceled.

How to Set Filter Replacement Alarm Function

1. Press and hold the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. Press the [Cleansing Water] button once.

   • The Voice Guide will say “Filter Replacement Alarm Setting Mode.”
3. Press the [Energy Save/Setting] button again to enter the Filter Replacement Alarm Setting Mode.
4. Press the [Heating Temp.] button to toggle the alarm ON or OFF.

   • Each press will alternate the setting (e.g., ON → OFF → ON → OFF…).
5. After selecting ON or OFF, press the [Energy Save/Setting] button to save the setting.

   • The Voice Guide will say “Set-up completed.”
   • ※ If the alarm is turned OFF, the filter replacement alert will not sound.

How to Set the Self Cleaning Module Usage Alarm Function

1. Press and hold the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. Press the [Cleansing Water] button twice.

   • The Voice Guide will say “Self cleaning kit module usage alarm mode.”
3. Press the [Energy Save/Setting] button to enter the Self Cleaning Module Usage Alarm Setting Mode.
4. Press the [Heating Temp.] button to toggle the alarm ON or OFF.

   • The setting switches each time you press the button: e.g., ON → OFF → ON → OFF …
5. After selecting ON or OFF, press the [Energy Save/Setting] button to save.

   • The Voice Guide will say “Set-up completed.”
   • ※ If the function is turned off, the self cleaning module usage alarm will not sound.

How to Change Dispensing Volume

1. Press the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter the User Setting mode.
2. Press the [Cleansing Water] button:

   • 3 times for One Cup Dispensing Volume
   • 4 times for Half Cup Dispensing Volume
   • The Voice Guide will say “One cup or half cup dispensing volume setting mode.”
3. Press the [Energy Save/Setting] button to enter the dispensing volume setting mode.
4. Press the [Lock] button to set a desired dispensing volume.

   • Each time you press the button, the Display will repeat changing from 0 (Standard) to Up and Down.
5. Press the [Energy Save/Setting] button to save your selection.

   • The Voice Guide will say “Set-up completed.”

How to Change Voice Volume

1. Press and hold the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. Press the [Cleansing Water] button five times.

   • The Voice Guide will say “Voice volume setting mode.”
3. Press the [Cleansing Water] button again to enter the Voice Volume Setting Mode.
4. Press the [Lock] button to adjust the voice volume level.

   • Each press changes the level by one step from the current setting. Example sequence: Level 4 → Level 5 → OF_1 → OF_2 → Level 1 → Level 2 → Level 3
   • To set maximum volume, choose Level 5.
   • To mute the Voice Guide, select OF_1.
5. Press the [Energy Save/Setting] button to save your selection.

   • The Voice Guide will say “Set-up completed.”
   • ※ The Voice Guide is not available between 12:00 AM and 6:00 AM and only works while cleansing water is dispensed or in User Setting mode.

How To Use the Mood Lamp Function

1. Press and hold the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. Press the [Cleansing Water] button six times.

   • The Voice Guide will say “Mood lamp setting mode.”
3. Press the [Energy Save/Setting] button to enter the Mood Lamp Setting Mode.
4. Press the [Lock] button to toggle the Mood Lamp function.

   • Each press alternates the setting: ON → OFF → ON → OFF …
5. After selecting ON or OFF, press the [Energy Save/Setting] button to save.

   • The Voice Guide will say “Set-up completed.”

How to Use the Melody Function After Using Cleansing Water

This function turns the melody ON or OFF when cleaning is performed after using the cleansing water.

1. Press and hold the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. Press the [Cleansing Water] button seven times.

   • The Voice Guide will say “Melody function set-up mode.”
3. Press the [Energy Save/Setting] button to enter the Melody Function setting.
4. Press the [Lock] button to toggle the melody ON or OFF.

   • Each press switches the setting: ON → OFF → ON → OFF …
5. Press the [Energy Save/Setting] button to save your selection.

   • The Voice Guide will say “Set-up completed.”

How To Change Self Cleaning Reservation Time

This function turns the melody ON or OFF when cleaning is performed after using the cleansing water.

1. Press and hold the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. Press the [Cleansing Water] button seven times.

   • The Voice Guide will say “Melody function set-up mode.”
3. Press the [Energy Save/Setting] button to enter the Melody Function setting.
4. Press the [Lock] button to toggle the melody ON or OFF.

   • Each press switches the setting: ON → OFF → ON → OFF …
5. Press the [Energy Save/Setting] button to save your selection.

   • The Voice Guide will say “Set-up completed.”

How to Use the Filter Reset Button

1. Press the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. After entering the User Setting mode, press the [Cleansing Water] button nine times.

   • The Voice Guide will say “Filter reset mode”.
3. Press the [Energy Save/Setting] button to enter Filter Reset Mode.
4. In Filter Reset Mode, press one of the following buttons for 3 seconds to reset: [Faucet Cleaning]: Reset button for filter number 1 / [Self Clean/Timer]: Reset button for filter number 2

   • The Voice Guide will say “Start reset for filter number OO.”
   • It enters Filter Reset Recheck Mode.
   • Press the button to select whether or not to perform a reset.
   • YES / NO is repeated for every button input. e.g.) YES → NO → YES → NO → …
5. After selecting whether or not to reset the filter, press the [Energy Save/Setting] button to perform a reset.

   • The Voice Guide will say “Reset completed”.

How to Check Filter Usage

1. Replacement alarm through 3-color LED (mood lamp) at the outlet.

   • No LED display → Sky blue → Yellow → Orange (As the usage of filters increases, the color changes consecutively.)
2. During dispensing, a replacement alarm is given via voice guidance:

   • The Voice Guide will say “Filter replacement is required” during dispensing. e.g.) In case of the first dispensing, the Voice Guide will say it only once a day.
   • When this message is heard, contact the service center and replace the filter.

How to Use Auto Filter Cleaning Function

1. Press the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. After entering the User Setting mode, press the [Cleansing Water] button ten times.

   • The Voice Guide will say, “Automatic filter flushing function.”
3. Press the [Energy Save/Setting] button.

   • The Voice Guide will say “Start auto filter cleaning”, and the filter will be automatically cleaned.
   • “Auto Cleansing Time” will appear on the display panel.
4. Once Auto Filter Cleaning is complete, the Voice Guide will say “Auto filter cleaning completed” and the product will return to Standby Mode, ready for dispensing.
5. To cancel the Auto Filter Cleaning function, press the [Energy Save/Setting] button.

   • The Voice Guide will say “Auto filter cleaning stopped”.
6. The Auto Filter Cleaning process takes approximately 10 to 15 minutes, depending on the water pressure.

   • If the Voice Guide says: “Please inspect tap water input,” turn the Close lever on the right side of the product (on the filter door) to the CLOSE position during cleaning.

How to use the Immediate Faucet Cleaning function when a cleansing cup is detected

1. Press the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter the User Setting mode.
2. After entering the User Setting mode, press the [Cleansing Water] button eleven times.

   • The Voice Guide will say “Self-cleaning function set-up mode”.
3. Press the [Energy Save/Setting] button to enter the Immediate Cleansing setup mode.
4. Press the [Lock] button to set the Immediate Cleansing function ON/OFF when a cleansing cup is detected.

   • It repeats ON/OFF every time the button is pressed. e.g.) ON → OFF → ON → OFF → …
5. Once the desired setting is selected, press the [Energy Save/Setting] button to confirm.

   • The Voice Guide will say “Set-up completed”.
   • ※ When this function is enabled, faucet cleaning will start automatically when a cleansing cup is detected.

How To Set Language

1. Press the [Energy Save/Setting] button for 3 seconds in Standby Mode.

   • The product will enter User Setting mode.
2. After entering the User Setting mode, press the [Cleansing Water] button twelve times.

   • “Voice selection mode.” “Function setting is available by pressing the blinking button.”
3. Press the [Energy Save/Setting] button to enter the Language Setting mode.
4. The current language will be displayed.

   • To change the language, press the blinking button, then press the setup button.
5. Press the [Cleansing Water] button to select a language.

   • Each time you press the button, the language will change. e.g.) 1(English) → 2(Korean) → …
6. Select the desired language and save it by pressing the [Energy Save/Setting] button.

   • The Voice Guide will say “Set-up completed.”

How To Videos

▶

CUCKOO HOW TO

How to Set Child Lock

▶

CUCKOO HOW TO

How To Use the Immediate Self Cleaning Function

▶

CUCKOO HOW TO

How To Use the Immediate Faucet Cleaning function

▶

CUCKOO HOW TO

How To Use the Button Lock function

▶

CUCKOO HOW TO

How to Set Filter Replacement Alarm Function

▶

CUCKOO HOW TO

How to set the Self Cleaning Module Usage Alarm function

▶

CUCKOO HOW TO

How to Change DIspensing Volume

▶

CUCKOO HOW TO

How to Change Voice Volume

▶

CUCKOO HOW TO

How To Use the Mood Lamp function

▶

CUCKOO HOW TO

How to use the Melody function after using cleansing water

▶

CUCKOO HOW TO

How To Use Time Notification Function

▶

CUCKOO HOW TO

How To Change Self Cleaning Reservation Time

▶

CUCKOO HOW TO

How to Change Current Time

▶

CUCKOO HOW TO

How to Use Filter Reset Function

▶

CUCKOO HOW TO

How To Set Language

How To Clean Tray / How To Clean Main Body

How to Clean the Tray

1. Detach the Tray

   • Hold and gently pull the tray toward the front of the product to remove it.

1. Detach the Tray Grille

   • Remove the Tray Grille by lifting it from the hole at the center.
2. Clean the Tray

   • Discard any stagnant water and wipe the tray thoroughly with a soft cloth.
3. Reassemble the Tray

   • After cleaning, reattach the tray in the reverse order.

How to Clean the Main Body

• Wipe the surface with a soft, dry cloth.
  • Before wiping, enable the Button Lock function to prevent accidental operation during cleaning.
  • If the unit is heavily soiled, use a lightly dampened cloth. (Do not use benzene, thinner, or abrasive cleaners.)

• Remove the pre-filter from the bottom of the unit for cleaning.
  • Wash it with water, then dry and reassemble it. Failure to clean the pre-filter regularly may reduce cooling performance.

Video Tutorial

How To Replace the Filters

How To Replace the Filters (Only use CUCKOO Water Purifier filters.)

Video Tutorial

Filter Replacement Procedure

1. Turn the Close lever on the right side of the filter door to the OPEN position.

   • This shuts off the water supply to prevent water flow during filter replacement.
2. Detach the filter door.

   • After removing the door, do not forcibly turn the Close lever—it may damage the product.
   • If the door does not open, ensure the Close lever is fully turned to the OPEN position.
3. Lift and then pull the filter to remove it.

   • While the Voice Guide is playing, any remaining pressure inside the pipe will be released.
   • When replacing the filter, some water may drip depending on the environment. Wipe off any excess water after replacement.
4. Insert the filter as shown in the image and then push it into the filter case to connect.

   • Filters must be installed in the correct order: Carbon Composite first, then Nano Positive Plus 3.0 (from right to left).
   • Ensure each filter is securely and correctly inserted into the case.
5. Lock the filter door as shown in the image.

   • The groove at the bottom must be accurately aligned for smooth installation.

1. Turn the Close lever on the right side of the filter door to the CLOSE position.

   • This restores the water supply to the purifier.
2. Once the product is in Standby Mode, run the Automatic Filter Cleaning function to clean the filter. (Refer to the How to Use Auto Filter Cleaning Function section.)

   • ※ If the Voice Guide says “Please check raw water inlet” during filter cleaning, turn the Close lever on the right side of the filter door to the CLOSE position.

Expected Filter Replacement Cycle / Recommendations / Filter Arrangement

Expected Filter Replacement Cycle

The replacement cycle is based on average usage of 10 L per day in a typical household and may vary depending on water quality.

Recommendations

Filter Replacement Cycle

• The replacement cycle refers to the expected duration a filter will perform effectively, based on testing and usage.
• This is calculated using standard tap water with an average daily usage of approximately 10 L (enough for 4 people).
• If water usage exceeds this amount or if the water quality is poor, the replacement cycle may shorten.

Filter Arrangement

Please check before asking for support.

▼ Even if there is no malfunction, the product may not operate correctly if the User Manual is not followed. Please review the checklist below before contacting Customer Service.

Product Specifications

※ Specifications and other details may be subject to change without prior notice for product improvement.

CUCKOO

We provide satisfying consultation and services concerning your complaints, suggestions, and recommendations upon receiving your troubled product model name, status, and contact information.

• After reading this manual, keep it in a place easily accessible to the user for future reference.
• This manual includes the warranty.
• Caution : Please read this manual carefully to ensure safety and a longer product lifespan.