Naturewater Reverse Osmosis System 190L/day NW-RO50-D1 User Manual

1. Product Overview

The Naturewater NW-RO50-D1 Reverse Osmosis (RO) system is designed to purify water for various applications, including drinking water, aquarium use, and demineralized water production. This advanced 5-stage filtration system effectively removes a wide range of contaminants, ensuring high-purity water output.

Key features include:

• 5-Stage Filtration: Comprehensive purification process.
• High Contaminant Removal: Filters up to 99% of heavy metals, pesticides, hormones, fungicides, medications, nitrates, phosphates, chlorides, asbestos, lime, radioactive isotopes, bacteria, protozoa, cysts, algae, and spores.
• Capacity: Produces up to 190 liters (50 GPD) of purified water per day.
• Booster Pump: Integrated pump ensures optimal performance even with lower incoming water pressure.
• Automatic Flushing: Features an automatic flushing mechanism to maintain membrane efficiency.

Figure 1: Main unit of the Naturewater NW-RO50-D1 Reverse Osmosis System, showing the pre-filters, booster pump, and control panel.

2. Safety Information

Please read all safety instructions carefully before installation and operation to prevent injury or damage to the system.

• Electrical Safety: Ensure the power supply matches the system's requirements (220V-50Hz, 25W). Do not operate with damaged cords or plugs. Keep electrical components dry.
• Water Pressure: The system is designed for specific inlet water pressure (0.1-0.35MPa). Ensure your water pressure is within this range.
• Leak Prevention: Hand-tighten all connections initially, then use the provided wrench for a final snug fit. Check for leaks after installation and periodically during operation.
• Installation: Install the system in a location protected from direct sunlight, freezing temperatures, and excessive heat. Ensure adequate ventilation.
• Maintenance: Always turn off the water supply and unplug the system before performing any maintenance or filter changes.
• Children and Pets: Keep the system out of reach of children and pets.

3. Package Contents

Verify that all components are present and undamaged before beginning installation.

• Main RO unit with pre-installed booster pump and control panel
• Sediment filter (PP filter)
• Granular activated carbon filter (UDF filter)
• Carbon block filter (CTO filter)
• RO membrane
• Pressurized storage tank (11.35 Liters capacity)
• Dispensing faucet
• Water supply adapter with shut-off valve
• Drain saddle valve
• Tubing (various colors for different connections)
• Filter housing wrenches
• Mounting hardware
• User manual

Figure 2: Included filters (sediment, granular carbon, carbon block) and filter housing wrenches.

Figure 3: Various accessories including the dispensing faucet, tubing, water supply adapter, and drain saddle.

4. Setup and Installation

Follow these steps carefully for proper installation. It is recommended to have basic plumbing knowledge or consult a professional.

4.1 Pre-Installation Checks

• Choose a suitable under-sink location with access to a cold water line, a drain, and an electrical outlet.
• Ensure there is enough space for the main unit, storage tank, and filter changes. Refer to dimensions: 36 x 20 x 44 cm (main unit).
• Turn off the main water supply to the installation area.

Figure 4: System dimensions for planning installation space.

4.2 Installing the RO Membrane

The RO membrane is typically packaged separately and needs to be installed into its housing.

1. Unscrew the cap of the RO membrane housing (usually the horizontal cylinder on top of the main unit).
2. Carefully insert the RO membrane into the housing, ensuring the end with the two O-rings goes in first.
3. Screw the cap back on securely by hand, then tighten slightly with the provided wrench.

Figure 5: The Reverse Osmosis membrane, which needs to be installed into its housing.

4.3 Connecting to Water Supply

1. Locate the cold water supply line under your sink.
2. Install the water supply adapter (T-valve) between the cold water shut-off valve and the faucet supply line. Ensure a tight, leak-free connection.
3. Connect one end of the designated inlet tubing (usually blue or white) to the water supply adapter and the other end to the "IN" port of the RO system.

4.4 Installing the Drain Saddle

1. Choose a location on the drain pipe above the P-trap.
2. Drill a 1/4-inch hole through one side of the drain pipe.
3. Attach the drain saddle valve over the drilled hole, ensuring a secure and leak-free fit.
4. Connect the designated drain tubing (usually black) from the RO system's "DRAIN" port to the drain saddle valve.

4.5 Installing the Faucet

1. Drill a 1/2-inch hole in your sink or countertop at the desired faucet location.
2. Insert the faucet stem through the hole and secure it from underneath with the provided washers and nut.
3. Connect the designated purified water tubing (usually yellow or white) from the RO system's "OUT" port to the faucet's inlet.

4.6 Connecting the Storage Tank

1. Wrap the threaded nipple of the storage tank with Teflon tape.
2. Screw the tank shut-off valve onto the tank nipple.
3. Connect the designated tubing from the RO system's post-filter outlet to the tank shut-off valve.

Figure 6: The pressurized storage tank for purified water.

4.7 Final Connections and Leak Check

• Ensure all tubing connections are secure. Push-fit connectors require the tubing to be fully inserted.
• Slowly turn on the main water supply.
• Check all connections for leaks. Tighten any leaking connections.
• Plug the power adapter into an electrical outlet.

5. Operating Instructions

5.1 Initial System Flush

Before consuming water, the system must be flushed to remove carbon fines and air from the filters.

1. Close the tank shut-off valve.
2. Open the dispensing faucet.
3. Allow water to flow from the faucet for 10-15 minutes, or until the water runs clear. This flushes the pre-filters.
4. Close the dispensing faucet and open the tank shut-off valve.
5. Allow the storage tank to fill completely (this may take 2-4 hours).
6. Once the tank is full, open the dispensing faucet and drain the entire tank. This flushes the RO membrane and post-filter.
7. Repeat steps 5 and 6 at least two more times. The first few tanks of water should not be consumed.

5.2 Normal Operation

After the initial flush, the system is ready for use. When you open the dispensing faucet, purified water will flow from the storage tank. As water is drawn, the system will automatically activate to refill the tank.

5.3 Control Panel and Monitoring

The system features a control panel with a digital display and indicator lights to monitor system status.

Figure 7: The system's control panel displaying TDS levels and operational status indicators.

• TDS Display: Shows the Total Dissolved Solids (PPM) of the purified water, indicating water quality.
• Work Indicator: Lights up when the system is actively producing water.
• Flush Indicator: Lights up during the automatic flushing cycle.
• Full Indicator: Lights up when the storage tank is full.
• Lack Indicator: May indicate low inlet water pressure or a system fault.
• Check Indicator: May indicate a need for maintenance or filter replacement.
• Mute Button: Used to silence audible alerts.

The system performs an automatic flush cycle periodically to clean the RO membrane and extend its lifespan.

6. Maintenance

Regular maintenance ensures optimal performance and water quality. Always turn off the water supply and unplug the system before performing maintenance.

6.1 Filter Replacement Schedule

Note: Replacement frequencies are estimates and may vary based on local water quality and usage. Monitor TDS levels for an indication of RO membrane performance.

6.2 Filter Replacement Procedure

1. Turn off the cold water supply to the RO system.
2. Close the tank shut-off valve.
3. Open the dispensing faucet to relieve pressure.
4. Unplug the system from the electrical outlet.
5. Use the provided filter housing wrench to unscrew the filter housings.
6. Remove the old filters and dispose of them properly.
7. Clean the inside of the filter housings with mild soap and water, then rinse thoroughly.
8. Insert new filters, ensuring they are correctly oriented.
9. Screw the filter housings back on by hand, then tighten with the wrench until snug. Do not overtighten.
10. For RO membrane replacement, follow the steps in Section 4.2.
11. Open the tank shut-off valve and slowly turn on the cold water supply.
12. Check for leaks.
13. Plug the system back in.
14. Perform an initial system flush as described in Section 5.1.

7. Troubleshooting

Refer to this section for common issues and their solutions.

8. Specifications

9. Warranty and Support

For warranty information and technical support, please refer to the manufacturer's official website or contact your retailer. Keep your proof of purchase for warranty claims.

Note: Availability of spare parts information is not provided in the product details.