1. Introduction and Important Notes
This manual provides essential information for the installation, operation, maintenance, and troubleshooting of your OSWNKW RO600G water purifier filter elements. Please read it thoroughly before use to ensure proper function and safety.
1.1. Points for Attention
- After unpacking, inspect the product for any damage and confirm all accessories are present. Contact the seller immediately if any issues are found.
- Children and individuals with limited capacity must use this product under adult supervision to prevent safety hazards.
- In case of a malfunction, immediately unplug the power cord, close the water outlet valve, and do not allow the faulty product to continue operating. Contact professional maintenance personnel for inspection and repair.
- The water output of the reverse osmosis (RO) membrane is influenced by water quality, water pressure, and water temperature. Lower water pressure or temperatures below 25°C may result in reduced water output, which is normal.
2. Product Components
The OSWNKW RO600G water purifier system utilizes a multi-stage filtration process. This replacement set includes:
- Polypropylene (PP) Filter Elements (x2): For initial sediment removal.
- PPC Activated Carbon Filter Elements (x2): For chlorine and organic matter reduction.
- RO Reverse Osmosis Membrane (x1): For fine filtration of dissolved solids.
- Alkaline Mineralized Filter Elements (MF) (x2): For pH adjustment and mineral enhancement.

Image: Complete set of OSWNKW water purifier filter elements.

Image: The complete set contains 2x PP, 2x PPC, 1x RO, and 2x MF filters.
2.1. Internal Component Diagram
The following diagram illustrates the internal components of the OSWNKW RO600G water purifier unit:
Diagram of internal components (refer to original user manual for visual representation):
- Polypropylene Filter Element
- PPC Activated Carbon Filter Element
- RO Reverse Osmosis Membrane
- Alkaline mineralized filter element
- UVA disinfection lamp
- LED Smart Screen
- Pressure pump
- Inlet valve
- Leak detection chip
- TDS probe
- High voltage switch
- Wastewater valve
- Shell
3. Specifications
| Parameter | Value |
|---|---|
| Name | Reverse Osmosis Water Filter OSWNKW |
| Model | RO600G |
| Inlet water pressure | 0.1-0.4 MPa (14.5-58 PSI) |
| Water temperature | 4-40 °C (39-104 °F) |
| Applicable ambient temperature | 0-40 °C (32-104 °F) |
| Rated voltage | 110-240 V 50/60 Hz |
| Rated power (running) | 40 W - 80 W |
| Water consumption | 1.5-2.7 L/min (0.4-0.7 GPM) |
| Total volume of clean water | 4,000 L (1,056 gallons, depending on water quality) |
3.1. Filter Dimensions

Image: Dimensions of the filter elements. PP: 252mm height, 60mm diameter. PPC: 252mm height, 65mm diameter. RO: 333mm height, 70mm diameter. MF: 250mm height, 52mm diameter.
4. Working Principle
4.1. Filtration Process
Tap water enters the system through the tap water switch cabinet, passes through the inlet solenoid valve, and undergoes sequential filtration:
- PP Filter: Removes large impurities like suspended solids, sediments, rust, and colloids.
- PPC Filter: Reduces organic matter, residual chlorine, disinfection byproducts, discoloration, odors, and some heavy metals.
- RO Reverse Osmosis Membrane: Utilizes polymer reverse osmosis technology with a 0.0001 micron pore size for deep purification, removing heavy metals, scale, bacteria, and chemical residues.
- MF (Mineral Alkaline) Filter: Enriches water with calcium and magnesium ions, adjusting pH to 7.5±0.5 for slightly alkaline, healthier drinking water.
After filtration, the purified water is disinfected by a UVAZI ultraviolet lamp and discharged. Wastewater is directed through a wastewater solenoid valve. A water pump powers the filtration process for efficiency.
4.2. Electrical Schematic
The system's power supply (110-240V) is converted to 24V DC by a power adapter, which powers the main control panel. The main control panel manages the water pump, display panel, and switch cabinet, overseeing the entire water purification process, including automatic filtration and flushing functions.
Diagrams of Working Principle and Electrical Schematic (refer to original user manual for visual representation):
Working Principle Diagram: Shows water flow from TAP water through PP, PPC, RO, MF, and UVA stages, with components like intake solenoid valve, water pump, high voltage switch, and waste water solenoid valve.
Electrical Schematic Diagram: Illustrates power input (220V) to power adapter, 24V output to Main Control Panel, which connects to Display Panel, intake solenoid valve, waste water solenoid valve, water pump, and Switchgear.

Image: RO membrane filter effectively solves various water quality issues through 0.0001 micron fine filtration, removing residual chlorine, heavy metals, and suspended solids.
5. Setup (Installation Method)
Note: Professional installation and commissioning are recommended. Before installation, ensure all accessories listed in the packing list are present.
5.1. Installation Environment Requirements
- Water Source: Municipal tap water only.
- Power Supply: A 110V~/220V~ power socket must be available near the installation location.
- Environment: The installation area should be clean, hygienic, free from pollution, direct sunlight, and away from flammable/explosive electrical equipment.
5.2. Packing List (What's in the Box)
| Item | Quantity | Item | Quantity |
|---|---|---|---|
| Main unit | 1 | Three-way valve for water supply | 1 |
| RO faucet | 1 | Power supply | 1 |
| PP filter element | 1 | Wrench | 1 |
| PPC filter cartridge | 1 | Wastewater clamp | 1 |
| RO filter element | 1 | Pressure valve | 1 |
| MF filter element (already installed inside the machine) | 1 | Faucet holder, screw pack | 1 |
| 1/4-inch PE pipe | 2 | 1/4-inch connector | 1 |
| 3/8-inch PE pipe | 1 |
6. Operating Instructions
6.1. Initial Use and Operation
- Open the tap water inlet ball valve and verify that all connections are securely locked and sealed to prevent water leakage.
- Open the water purifier faucet, plug in the power supply, and the machine will begin operation. Allow water to flow for approximately 15 minutes to rinse off the protective liquid from the pipes and membrane. Initially, black water may appear, which is normal. This also exhausts air from the pipes.
- Close the water purifier faucet. The machine display will show "full water". Let it stand for 5 minutes and check all interfaces for leaks.
- If any leaks are detected, immediately turn off the power supply and water inlet valve, then inspect and rectify the leakage point.
6.2. Display Screen Instructions
Diagram of Display Screen (refer to original user manual for visual representation):
The display features icons for Purify, Standby, Rinse, Fault, Reset, Flush, and filter cartridge indicators (I, II, III, IV) along with a central number display.
- Middle Number Icon: Turn on the tap to view the real-time TDS (Total Dissolved Solids) value of the water.
- Purification Icon: When the tap is on, the machine enters purification mode, and this icon flashes. It stops flashing and the machine enters standby mode once purification is complete.
- Standby Icon: When the tap is off, the machine enters standby mode, and this icon flashes.
- Flushing Icon: This icon flashes when the machine is in flushing mode.
- Fault Icon: If the inlet valve does not detect water, the machine enters fault mode, and this icon flashes.
- Filter Cartridge Icons (I, II, III, IV): Each icon represents a filter cartridge with a specific lifespan (I: 60 hours, II: 60 hours, III: 120 hours, IV: 80 hours). When a filter reaches its end-of-life, a buzzer sounds 10 times, and its indicator light flashes, prompting replacement.
- Reset Function: Press and hold the "Reset" button for 3 seconds to enter filter cartridge reset mode. The indicator for the selected filter flashes, others turn off. Press again to select the next filter. Hold "Reset" for 3 seconds to reset the currently selected filter.
- Flushing Button: Press once to start backwash flushing; press again to cancel.
7. Maintenance
7.1. Filter Element Replacement Cycle
Over time, impurities accumulate in the filter elements, reducing water output. Regular replacement is crucial for optimal performance. The recommended replacement cycle, assuming standard raw water temperature, pressure, and quality, is as follows:
- General Recommendation: Replace all filter cartridges annually.
- Specific Filter Lifespans:
- PP Filter: 6-12 months
- PPC Filter: 6-12 months
- RO Membrane: 12-24 months
- MF (T33) Filter: 6-12 months
Replace filters promptly if any of the following occur:
- The TDS value displayed on the front LED panel increases significantly.
- The purified water output decreases significantly.
- The smart reminder function is triggered (based on cumulative operation hours: I 60h, II 60h, III 120h, IV 80h).

Image: Recommended replacement times for each filter type: PP (1 year), PPC (1 year), RO (2 years), MF (1 year).

Image: Filters can process up to 4000 liters of water. All filter elements need to be replaced periodically.
7.2. Steps to Replace the Filter Element
- Turn off the water inlet valve. Press the backwash button, and after 5 seconds, turn on the faucet. When the machine indicates water shortage, unplug the power supply.
- Carefully remove the machine's outer shell. Use the special wrench to unscrew the filter element cover. Pull out the old filter element and install the new filter element in the correct sequence.
- After restoring the water supply, check all connections for any water leakage.
8. Troubleshooting
| Fault Phenomenon | Possible Reasons | Solution |
|---|---|---|
| Machine out of water | PE pipe at a discount | Straighten out the PE pipe |
| The inlet three-way ball valve is closed | Open the inlet three-way ball valve | |
| No water source | Feed a water source | |
| Small water quantity | PP filter element is blocked | Replace the filter element |
| Raw water temperature is too low | Normal phenomenon, water output may be reduced | |
| Raw water flow is insufficient | Check water supply pressure | |
| Machine doesn't work | A power failure | Check the power supply |
| Machine is in a state of water shortage | Check the water inlet | |
| The power adapter fails | Replace the Power Adapter | |
| Taste abnormalities | Machine stopped for a long time | Rinse filter elements for 5 minutes. If not improved, replace active carbon filters. |
| Water is stored too long | Drain the water in the pressure drum | |
| Filter element not changed for a long time | Replace the filter element | |
| Abnormal noise during operation | Power supply voltage is normal | Inform maintenance personnel for on-site debugging or replacement |
| Raw water flow is sufficient | Increase the amount of water in the raw water container | |
| Water is leaking into the power supply | Inform maintenance personnel for on-site debugging or replacement | |
| Pump failure | Inform maintenance personnel for on-site debugging or replacement |
9. User Tips
- Many users report satisfaction with the filtration quality, noting improved water taste after replacement.
- Regularly check the water taste; if it changes, it might be an indicator to check or replace filters, even if the system hasn't prompted it yet.
- Keep track of your purchase date to help with annual replacement schedules.
10. Frequently Asked Questions (FAQ)
- Q: How effective is the filtration against calcium?
- A: The RO (Reverse Osmosis) membrane is highly effective at removing dissolved solids, including calcium, which contributes to hard water. This significantly reduces scale buildup and improves water quality.
- Q: What is the micron rating of the PP sediment filter?
- A: The PP (Polypropylene) sediment filter typically provides fine filtration, often in the range of 1 to 5 microns, to effectively remove suspended solids and sediments.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to your purchase documentation or contact the seller directly. Keep your proof of purchase for any warranty claims.
A detailed user manual in PDF format may also be available from the seller or product page for further reference.