Introduction
Thank you for choosing the Crystal Quest Nitrate Removal + SMART In-line Water Filter System. This manual provides essential information for the proper installation, operation, and maintenance of your new water filtration system. Designed for use with refrigerators, ice makers, water coolers, and coffee machines, this system effectively reduces nitrates and other contaminants, providing cleaner, better-tasting water.
Video: Crystal Quest - Fresh Water Begins Here. This video highlights the importance of water filtration and the benefits of Crystal Quest systems in reducing contaminants.
Safety Information
- Read all instructions carefully before installation and use.
- Ensure all connections are secure to prevent leaks.
- Do not install the filter in direct sunlight or where it may be exposed to freezing temperatures.
- Use only with potable water.
- Do not exceed the maximum operating pressure specified for the system.
- Keep out of reach of children.
Product Overview
The Crystal Quest Nitrate Removal + SMART In-line Water Filter System is designed for advanced water purification. It utilizes a multi-stage filtration process to address a wide range of contaminants.
Components Included:
- Water Filter Unit
- Inlet Hose
- Outlet Hose
- Instruction Manual
Key Features:
- Advanced Nitrate Reduction: Utilizes nitrate-selective resin for effective removal.
- Multi-Stage Filtration: Incorporates Eagle Redox Alloy, Granular Activated Carbon (GAC), ceramic, and tourmaline balls to remove heavy metals, chlorine, and other impurities.
- Versatile Application: Suitable for refrigerators, ice makers, water coolers, and coffee machines.
- High Capacity: Filters up to 3000 gallons, depending on water quality and usage.
- Easy Maintenance: Features a reusable cartridge with simple salt-brine regeneration.
- Universal Fit: Equipped with high-pressure quick-connect fittings for 1/4" o.d. copper or plastic tubing.

Image: Crystal Quest Nitrate Removal + SMART Water Filter System. This image displays the overall filter system, highlighting its premium quality and efficient filtration capabilities for various contaminants, providing filtered water on demand.

Image: Eco-Friendly and Certified Water Filter. This image emphasizes the system's eco-friendly design, BPA-free materials, ISO certification, and manufacturing in the USA, along with its reusable cartridge and easy salt regeneration feature.

Image: Advanced Eagle Redox Technology. This image illustrates the advanced Eagle Redox natural contaminant removal process, highlighting the system's ability to provide clean water on demand, its universal 1/4" & 3/8" fittings, and its effectiveness in neutralizing chlorine taste and odor.

Image: Filter Media for Fresh Water. A close-up view of the filter media, detailing how it effectively reduces harmful metals, ensures hydration, and is quick and easy to install. It also mentions the reusability with simple salt recharge every 20-30 days.
Setup (Installation)
This section outlines the general steps for installing your Crystal Quest in-line water filter system. For detailed instructions, refer to the included installation diagram and consult a qualified plumber if necessary.
- Prepare the Installation Area: Choose a location that is easily accessible for maintenance and protected from freezing. Ensure you have adequate space for the filter unit and tubing.
- Turn Off Water Supply: Locate the main water shut-off valve and turn off the water supply to the appliance where the filter will be installed.
- Install Saddle Valve (if needed): If connecting to a cold water line, install a saddle valve according to its instructions.
- Connect Inlet Hose: Connect the inlet hose from the water supply to the filter's inlet fitting. Ensure the red caps are removed from the filter ports before connecting.
- Connect Outlet Hose: Connect the outlet hose from the filter's outlet fitting to your appliance (refrigerator, ice maker, etc.).
- Secure Connections: Use the quick-connect fittings to ensure all tubing is securely attached. Pull gently on the tubing to confirm a tight seal.
- Mount the Filter: Securely mount the filter unit in the desired location using appropriate mounting hardware (not always included).
- Restore Water Supply: Slowly turn on the main water supply. Check for any leaks at the connections.
- Flush the System: Before first use, flush the filter by running water through it for several minutes (e.g., 5-10 minutes) until the water runs clear and any air is purged from the system. This removes carbon fines and prepares the filter for use.

Image: Water Filter Installation Diagram. This diagram illustrates a typical under-sink installation, showing connections for the inlet and outlet fittings, saddle valve, and faucet. It also indicates where to remove red caps during installation.
Operating Instructions
Once installed and flushed, your Crystal Quest water filter system operates automatically with your connected appliance.
- First Use: After flushing, the system is ready to provide filtered water. The initial taste may vary slightly as the filter settles.
- Daily Use: Simply use your refrigerator's water dispenser, ice maker, or coffee machine as usual. The filter will continuously purify the water as it passes through.
- Flow Rate: The system has a maximum flow rate of 0.5 gallons per minute. Significant drops in flow rate may indicate a need for maintenance or filter replacement.
Maintenance
Regular maintenance ensures optimal performance and longevity of your water filter system.
Filter Regeneration:
The nitrate removal media requires periodic regeneration to maintain its effectiveness. This process typically involves a simple salt-brine solution.
- Frequency: Regeneration is recommended every 20-30 days, depending on your water's nitrate levels and usage.
- Procedure: Refer to the detailed regeneration instructions provided with your filter unit. This usually involves disconnecting the filter, flushing it with a salt-brine solution, and then rinsing thoroughly before reconnecting.
Filter Replacement:
The filter cartridge has a capacity of up to 3000 gallons. The actual lifespan depends on the quality of your incoming water and your daily water consumption.
- Indicator: A noticeable decrease in water flow or a change in water taste/odor indicates that the filter cartridge may need replacement.
- Procedure: Turn off the water supply, disconnect the old filter, and install a new Crystal Quest replacement cartridge following the installation steps. Remember to flush the new filter before use.
Troubleshooting
If you encounter issues with your water filter system, try the following troubleshooting steps:
- Low Water Flow: Check if the water supply valve is fully open. The filter may be clogged and require regeneration or replacement. Ensure there are no kinks in the tubing.
- Leaks: Turn off the water supply immediately. Check all connections for tightness. Ensure O-rings are properly seated and not damaged.
- Unusual Taste or Odor: Ensure the filter has been adequately flushed after installation or regeneration. If the taste/odor persists, the filter media may be exhausted and require regeneration or replacement.
- No Water: Verify that the water supply is on and that the filter is correctly installed and connected.
If problems persist after attempting these steps, please contact Crystal Quest customer support.
Specifications
| Brand | Crystal Quest |
| Model Name | CQE-RF-00707 |
| Product Dimensions | 5"L x 5"W x 14"H |
| Item Weight | 6 Pounds |
| Installation Type | Under Sink / In-line |
| Power Source | Water Pressure |
| Maximum Flow Rate | 0.5 Gallons Per Minute |
| Supported Water TDS Level Maximum | 3000 PPM |
| Material | Resin, Activated Carbon |
| Capacity | 3000 Gallons |
| Purification Method | Activated Carbon, Ion Exchange |
| Special Feature | Heavy Duty |
Warranty and Support
For warranty information, please refer to the documentation included with your purchase or contact Crystal Quest directly. Crystal Quest offers various protection plans for extended coverage, which can be purchased separately.
For technical support, replacement parts, or any questions regarding your Crystal Quest Nitrate Removal + SMART In-line Water Filter System, please contact the manufacturer:
Crystal Quest
Visit their official website or contact their customer service department for assistance.





