MIZUDO Megaflo Reverse Osmosis Water Filtration System

WARNING

Please read this manual carefully before using your product, and keep it for future reference. As the appliance is kept upgrading, it may differ between the actual appliance and the one in the manual. Please refer to the actual product.

FCC Compliance

Contains Transmitter Module FCC ID: 2ANDL-WBR3. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authorization to operate the equipment.

WARNING

• Please use municipal tap water as the water source. Do not use water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.
• Be sure to handle the system gently and carefully. Do not attempt to modify or repair the system yourself, otherwise, the warranty will become invalid.
• This device is intended for domestic use only.
• The inlet water temperature of the system should be within 41~100 °F (5~38 °C). When the inlet water temperature exceeds 100 °F (38 °C), the filter could be damaged and become invalid. If the inlet water temperature is lower than 41 °F (5°C), it may cause freezing and the parts of the system to rupture, resulting in water leakage.
• Do not reverse the installation order of the filter cartridges to avoid affecting the filter performance of the system.
• If the system is abnormal or faulty, stop using it immediately. Close the inlet water valve and turn on the faucet to empty the system. Events of faults include:
  • Leakage
  • The product is cracked or damaged
  • There is an abnormal sound or burnt smell
  • The machine does not work
  Please contact consumer care for inspection immediately.
• If not using the system for an extended period, turn off the water supply to avoid damage to the system.

General Information

2.1 Product Specification

Hardness: Recommended hardness is not to exceed 10 grains per gallon or 170 parts per million. The system will operate with a hardness of over 10 grains, but the membrane life may be shortened. The addition of a water softener may lengthen the membrane life.

Water Pressure: The operating water pressure in your home should be tested over a 24-hour period to attain the maximum pressure. If the incoming water pressure is above 100 psi, a water pressure regulator is required.

Installation

3.1 Installation Instructions

Read all installation and operating instructions before installing and using your RO system.

NOTICE: Please check if there is sufficient space for installing the system itself, its accessories, and connections.

• Under no circumstances should the system be installed outdoors.
• The environment where the system is installed should adhere to appropriate hygiene and sanitation conditions. Avoid any external dripping liquids from pipes or drains, etc., onto the system.
• This system should be placed on a stable and flat surface.
• Keep the system away from heat. It shall not be placed in a place that may have in-flammable gas leakage.

How to use the quick-connector fitting

To connect: Mark for full insert. Push the PE tubing into the fitting until you reach the mark on the tubing. If the PE tubing is not fully inserted, no seal will be created, and leakage will occur. When the PE tubing is fully inserted, put the clip on the fitting. It will lock the PE tubing in place and prevent it from falling off.

NOTICE: If the PE tubing is too long, cut it to a suitable length with a sharp utility knife or scissors. Cut the PE tubing squarely and cleanly. Make sure the PE tubing is fully inserted.

To disconnect: Remove the blue lock clip from the fitting. Use your thumb and index finger to press down the lock sleeve. Use your other hand to pull out the PE tubing from the fitting.

NOTICE: Please do not pull out the PE tubing directly. This will damage the fitting and cause leakage.

3.2 Selecting the Faucet Location

Most sinks have pre-drilled holes designed for spray hoses. The RO faucet may be through using one of these holes despite their larger size. If these pre-drilled holes cannot be used or are in an inconvenient location, it will be necessary to drill a 1" hole in the sink or through the countertop next to the sink.

CAUTION: This procedure may generate dust, which can cause severe irritation if inhaled or come in contact with the eyes. Safety glasses and a safety mask are recommended for this procedure.

• Do not attempt to drill through an all-porcelain or porcelain-coated sink. For applications on these types of sinks, we recommend using the sprayer hole or drilling the hole through the countertop.
• When drilling through a countertop, make sure the area below the drilled area is free of wiring and piping. Make certain that you have ample room to make the proper connections to the bottom of the countertop.
• Do not drill through a countertop that is more than 1 inch thick.
• Do not attempt to drill through a tiled, marble, granite or similar countertop. Consult a plumber or the countertop manufacturer for advice or assistance.

The following instructions apply to stainless steel sinks ONLY:

1. Line the bottom of the sink with newspaper to prevent shavings, parts or tools from falling down the drain.
2. Place masking tape over the area to be drilled to help prevent scratches if drill bit slips.
3. Mark the point with a center punch. Use a 1/4-inch drill bit to drill a pilot hole through the sink.
4. Use a 1" hole saw to enlarge the hole. Smooth rough edges with a file.

3.3 Install the Angle Stop Valve for the feed water (3/8" or 1/2")

(A) Turn off the cold water supply valve. Turn on the kitchen cold water faucet to release the pressure and allow water to drain from the line. Disconnect the cold water hose from the cold water valve.

(B) Insert the 3/8" white PE tubing into the angle stop adapter's fitting. Secure the tubing with a 3/8" clip.

(C) Install the Angle Stop Valve on the cold water valve and tighten it with an adjustable wrench. Please don't miss the gasket inside the angle stop adapter during installation.

NOTICE: If the cold water tubing is 1/2", screw the conversion adaptor upper the Angle Stop Valve.

(D) Switch off the angle stop adapter. Turn on the cold water supply valve. Wipe the connections with a tissue to check for leakage. If the tissue stays dry, the angle stop valve is installed correctly.

3.4 Install the RO Faucet

NOTICE: If your kitchen sink or countertop does not have an existing hole, you will have to drill one (1"). Refer to chapter 3.2.

1. Insert the faucet spout into the faucet body.
2. Insert the faucet stem, power cord, and PE tubing into the hole on the countertop.
3. Under the sink, slip on the nut and tighten it up (Do not forget the washer).
4. Insert the quick-connector fitting into the PE tubing. Use a clip to secure the tubing.

3.5 Install RO drain connector

1. Identify drain outlet location.
2. Knock out the center hole on the foam seal (④).
3. Use the hole in the foam seal (④) as a template to locate your drilling position above the drain tap. Mark the location with a pencil. Note: If you have a double sink and cross- or horizontal drain tubing, it is safe to mark the drill location on the top of the horizontal drain tubing.
4. At the marked location, drill a 1/4" hole through the wall of the drain tubing, being sure not to penetrate the opposite side of the tubing.
5. Remove the protective cover from the back of the foam seal (④) and attach it to the front plate of the drain connector (①) in alignment with the holes.
6. Begin to position the drain connector (1) on the sink drain tubing with Screws (②) and Nuts (③), using your pencil (or a thin pen) in the drain connector (1) tube hole to guide your location over your drilled hole as you securely tighten Nuts (3) and Screws (②).

NOTICE: Remove the pencil once the location is established.

NOTICE: In some cases, the "Drain Water" tubing needs to be connected to the drainpipe through air gap. Consumers need to purchase air gap accessories additionally.

3.6 Connecting the PE tubing to the System

(a) Press down the collects and pull out the plugs of the water holes in the top of the system.

(b) Connect the Raw Water and the angle stop valve. Insert the other end of the 3/8" white PE tubing connected with the angle stop valve into the Raw Water hole at the top of the system. Secure the tubing with a 3/8" clip.

(c) Connect the Pure Water and the Faucet. Insert one end of the 1/4" white PE tubing into the Pure Water hole. Secure the tubing with a 1/4" clip. Insert another end of the 1/4" white PE tubing into the quick-connector fitting of the Faucet. Secure the tubing with a 1/4" clip.

(d) Connect the Drain Water and the Drain Connector. Insert one end of the 1/4" Red PE tubing into the Drain Water hole. Use a 1/4" clip to secure the tubing. Insert another end of the 1/4" Red PE tubing into the Drain connection. Secure the tubing with a 1/4" clip.

3.7 Connecting the Power Cord

(a) Connect the faucet power cord to the system. Insert the power cord attached to the faucet into the "FAUCET" connector at the top of the system and tighten the nut.

(b) Connect Power Adapter. Insert the DC head of the power adapter into the "POWER" port at the top of the system.

NOTICE: Please do not connect the power socket now.

Operation

4.1 Before the first-time use

(A) Turn on the cold water supply and ensure the supply adapter valve is open.

(B) Connect the system with power. You will hear a long beep, and all indicators will light up for 3s. The system will automatically flush for 30s. Wipe all the joints and connections with tissue to check for leakage. If the tissue stays dry, the system is installed correctly.

(C) After the auto-flush is completed, turn on the faucet to allow water to run for 30 minutes to flush the air and carbon fines through the filters. After that, the system is ready, and you can start to consume the pure water.

NOTICE: Initially, the water may appear cloudy. This is a result of air trapped in the RO filter. It is not harmful and will disappear in a matter of minutes. It may take up to a week after installing a new RO filter for the trapped air to dissipate.

4.2 User interface

Indicator Table:

A. Wi-Fi Button: Press and hold the button for 5 seconds until you hear a beep. The indicator will start flashing blue. Once the system is successfully connected, the indicator will turn solid blue. If the connection fails, the indicator will turn off after 3 minutes.

B. Reset Button: To reset the filter lifespan, press and hold the reset button for 3 seconds until you hear a beep. The indicator will flash blue, confirming that the filter lifespan has been reset.

C. Flush Button: To flush the system, press and hold the flush button for 3 seconds until you hear a beep. The system will then enter flush mode for 30 seconds.

RO Faucet Indicator

NOTICE: The faucet screen alternately displays the TDS values for Raw Water and Pure Water every 3 seconds, allowing users to easily monitor water quality in real-time.

Maintenance

If you plan on not using the system for one week or longer, take out the filter and seal it with plastic wrap. Store the sealed filter in the fridge to protect the system against microbiological growth. To start the system again after the period of non-use, flush the system for at least 10 minutes OR change the filters.

If you will not use the system for two weeks or longer, disconnect the water supply, drain the system, and disconnect the power.

Follow the recommended filter replacement schedule. Replace the filter any time the indicator is on. Note that the actual filter life depends on the family size and water source quality. Failure to replace the filter at the appropriate times can damage the system and potentially cause health hazards.

If the filter cartridge is blocked, please replace it.

5.1 Filter Cartridge Replacement

NOTICE: The life of the filter cartridges depends on the water volume used and the quality of the feed water. For the best performance, please change your filter cartridge according to the filter lifetime indicator or the filter replacement cycle suggested below. When there is a noticeable change in taste, odor, or flow of filtered water, we recommend changing the filters as well.

The actual lifetime of the filter cartridge depends on the local tap water quality and daily usage. The recommended replacement cycle is an average based on different local tap water quality. If the local tap water quality is below the average, the actual lifetime of the cartridge would differ from the recommended replacement cycle.

Filter cartridge replacement:

a. Turn off the power and water supply before replacing the filter cartridges.

b. Remove the front cover.

c. Turn the filter that needs to be replaced anticlockwise and pull it out (figure1).

d. Remove the packaging of the new filter and insert the cartridge in the system. Turn it clockwise to align the triangle icon on the filter cartridge with the lock icon on the system (figure2).

e. Turn on the water supply and re-connect with power. If the RO filter is replaced, turn on the faucet and allow the water to run for 30 minutes. If the PCF filter is replaced, turn on the faucet and allow the water to run for 10 minutes.

f. Reset the filter lifetime according to chapter 5.1.

5.2 Automatic Flushing

The reverse osmosis membrane features a filtration capacity as fine as 0.0001 microns, effectively removing contaminants. The flush mode helps expel accumulated contaminants from the membrane, ensuring a longer filter lifespan and delivering purer water. The system will automatically enter flush mode in the following situations:

1. Flush for Power Restore: When power is restored after a blackout, the system will be forced to be flushed automatically for 30 seconds. While flushing, the flush indicator will flash a blue light.
2. Recycled Flushing: The recycled flushing function ensures that each cup of water is fresh and healthy. The system will automatically recycle flushing after it has dispensed water for more than 10 minutes.
3. Flush for Accumulative Time per 24 hours: To maintain and extend the life expectancy of the filters, the system will be automatically flushed for 300 seconds per 24 hours.

The flush mode doesn't affect the user when taking water. If the user decides to take water during the flushing, the system will quit flushing and switch to dispensing.

Troubleshooting