1. Introduction and Overview
The KENT Sterling Plus RO Water Purifier is designed to provide clean and safe drinking water through a multi-stage purification process. This under-the-counter model is equipped with RO, UV, UF, and TDS Control technologies to effectively remove dissolved impurities, bacteria, viruses, and salts, while retaining essential natural minerals.
This manual provides essential information for the proper installation, operation, and maintenance of your KENT Sterling Plus water purifier. Please read it thoroughly before use to ensure optimal performance and longevity of the product.
Image 1: KENT Sterling Plus RO Water Purifier main unit. This image shows the compact design of the purifier, suitable for under-the-counter installation.
2. Key Features
- Multiple Purification Process: Combines RO (Reverse Osmosis), UV (Ultraviolet), UF (Ultrafiltration), and TDS (Total Dissolved Solids) Control for comprehensive water purification.
- Mineral RO™ Technology: Patented technology that retains essential natural minerals in the purified water using a TDS Controller, ensuring 100% safe and tasty drinking water.
- Under-the-Counter Design: Compact and sleek design ideal for installation under the kitchen counter, optimizing space utilization.
- High Storage Capacity: Features a 6-liter inbuilt hydrostatic storage tank, providing a continuous supply of purified water even during power outages.
- Fully Automatic Operation: The purifier operates automatically, initiating the purification process when the water level in the storage tank falls below the maximum level.
Image 2: Diagram illustrating the key features of the KENT Sterling Plus, including 100% pure water, essential mineral retention, and 6-liter storage capacity.
Image 3: Flowchart detailing the multiple purification process (Sediment, Activated Carbon, RO, UF, TDS Controller, UV) for the KENT Sterling Plus.
Image 4: Graphic emphasizing the retention of essential minerals like Calcium (Ca+), Magnesium (Mg+), and Sodium (Na+) in purified water.
3. Setup and Installation
The KENT Sterling Plus is designed for under-the-counter installation. Due to the specialized nature of water purification systems, professional installation is highly recommended to ensure proper setup and optimal performance. Please contact authorized KENT service personnel for installation.
3.1. What's in the Box
Upon unpacking, verify that all components are present:
- Mineral RO Purifier: 1N
- TDS Meter: 1N
- Pipe: 3N
- Connector: 1N
- Valve: 1N
- Warranty Card: 1N
3.2. Installation Guidelines (Professional Installation Recommended)
- Site Selection: Choose a suitable location under the kitchen counter, ensuring adequate space for the unit and access for maintenance. The purifier is suitable for side-by-side refrigerator placement for efficient space utilization.
- Water Supply Connection: Connect the purifier to the raw water supply. Ensure the inlet water pressure is within the specified range (Min 0.3 kg/cm², Max 3 kg/cm²).
- Drain Connection: Establish a proper drain connection for rejected water.
- Dispensing Faucet: Install the purified water dispensing faucet on the countertop.
- Electrical Connection: Connect the purifier to a standard electrical outlet (100 - 250 V~ AC / 50-60 Hz).
- System Flush: Before first use, the system should be thoroughly flushed as per the installer's instructions to remove any manufacturing residues.
Image 5: An example of the KENT Sterling Plus installed discreetly under a kitchen counter, demonstrating its space-saving design.
4. Operating Instructions
The KENT Sterling Plus RO Water Purifier features fully automatic operation for user convenience.
4.1. Initial Startup
- After professional installation and system flush, ensure the power supply is connected.
- Open the raw water inlet valve. The purifier will automatically start filling the storage tank.
- Discard the first few liters of purified water (as advised by the installer) to ensure the system is fully primed and clean.
4.2. Normal Operation
- The purifier will automatically turn on when the water level in the storage tank drops below a preset minimum and turn off when the tank is full or the inlet water supply is interrupted.
- To dispense water, open the purified water faucet.
- The TDS controller allows for adjustment of the Total Dissolved Solids level in the purified water. This should ideally be set during installation by a technician to achieve the desired mineral balance.
5. Maintenance
Regular maintenance is crucial for the efficient and safe operation of your water purifier. Adhere to the recommended maintenance schedule.
5.1. Filter Replacement
The Sediment, Activated Carbon, and UF filters, along with the RO membrane, have a limited lifespan and require periodic replacement. The frequency depends on the quality of raw water and usage volume. It is recommended to replace filters annually or as indicated by the purifier's indicators (if available) or service technician.
5.2. UV Lamp Replacement
The UV lamp should be replaced periodically, typically once a year, to ensure effective disinfection.
5.3. Cleaning
- Wipe the exterior of the purifier with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- The storage tank should be cleaned periodically by a service technician.
For all filter and lamp replacements, and internal cleaning, contact authorized KENT service personnel.
6. Troubleshooting
If you encounter any issues with your KENT Sterling Plus water purifier, refer to the following common troubleshooting steps. For complex problems, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No purified water output | No power supply, inlet water valve closed, low water pressure, clogged filters/RO membrane. | Check power connection, open inlet valve, check household water pressure. If filters are suspected, contact service. |
| Slow water flow from faucet | Clogged filters/RO membrane, low pressure in storage tank. | Contact service for filter inspection/replacement or tank pressure check. |
| Unpleasant taste/odor in water | Expired carbon filter, contaminated storage tank. | Contact service for filter replacement and tank cleaning. |
| Continuous beeping sound | System fault, low water pressure, UV lamp failure. | Refer to the specific error code (if displayed) or contact service for diagnosis. |
| Water leakage | Loose connections, cracked housing, faulty components. | Immediately turn off water supply and power. Contact service for repair. |
7. Specifications
Below are the technical specifications for the KENT Sterling Plus RO Water Purifier:
| Feature | Detail |
|---|---|
| Model Name | Sterling Plus |
| Purification Method | RO+UV+UF+TDS Control |
| Installation Type | Under Sink |
| Capacity | 6 litres |
| Maximum Flow Rate | 20 Liters Per Hour (LPH) |
| Supported Water TDS Level (Max) | 2000 PPM |
| Product Dimensions (L x W x H) | 44L x 24W x 42H Centimeters |
| Item Weight | 12 Kilograms |
| Material | ABS Food Grade Plastic |
| Power Source Type | Corded Electric |
| Mains Voltage | 100 - 250 V~ AC / 50-60 Hz |
| Booster Pump Voltage | 24 V DC |
| Filter Cartridges | Sediment, Activated Carbon, UF |
| Membrane Type | Thin Film Composite RO |
Image 6: Diagram showing the dimensions of the KENT Sterling Plus RO Water Purifier (Length, Width, Height).
8. Warranty and Support
Your KENT Sterling Plus RO Water Purifier comes with a comprehensive warranty and service package.
8.1. Warranty Details
The product includes a 1 Year Warranty on the product and an additional 3 Years Extended Service AMC* FREE, valued at Rs. 3000. This service package covers maintenance and support for your purifier.
*Terms and Conditions apply. Refer to the warranty card provided in the box for full details.
8.2. Customer Support
For installation requests, service appointments, technical assistance, or any other queries, please contact KENT Customer Care. Refer to the contact information provided on your warranty card or the official KENT website.
9. Safety Information
Please observe the following safety precautions:
- Do not attempt to open or repair the purifier yourself. Always contact authorized service personnel.
- Ensure the power cord is not damaged and is properly connected to a grounded outlet.
- Keep the purifier away from direct sunlight, heat sources, and corrosive chemicals.
- Do not immerse the purifier in water or spray water directly onto it.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.