Nascool MFNI-05HL
Nascool Electric Nasal Irrigation System
Model: MFNI-05HL User Manual
1. Introduction
This manual provides detailed instructions for the safe and effective use, setup, operation, and maintenance of your Nascool Electric Nasal Irrigation System, Model MFNI-05HL. Please read this manual thoroughly before first use and retain it for future reference.

Figure 1: Nascool Electric Nasal Irrigation System, including the main unit, salt packets, and nozzles.
2. Important Safety Information
Please observe the following safety guidelines to prevent injury or damage to the device:
- Age Restriction: This device is not suitable for children under 12 years of age.
- Contraindications: Do not use if you suffer from nasal cavity injury, active nasal bleeding, ear inflammation after surgery, psychosis, mental retardation, epilepsy, infectious diseases, or blood diseases.
- Water Type: Always use distilled, filtered, bottled purified, or pre-boiled water to prepare saline solutions. Do not use tap water directly.
- Saline Solution: Never use plain clean water directly for nasal rinsing, as this can cause discomfort or a drowning sensation. Always use a properly prepared saline solution.
- Cleaning Temperature: Clean accessories with water below 70°C (158°F). Avoid hot water to prevent damage to the water tank.
- Breathing Technique: During rinsing, breathe normally through your mouth or hold your breath. Press your tongue firmly against the roof of your mouth and make an 'ng' sound to help seal the throat and separate the nasal cavity from the oral cavity.
3. Package Contents
Verify that all items are present in the package:
- Nascool Electric Nasal Irrigation System (Main Unit)
- 50 Saline Salt Packets
- 2 Pairs of Nose Pillows (Nozzles)
- 2 Preinstalled AA Batteries
- 2 Cleaning Swabs
- 1 Screwdriver (for battery compartment)
4. Product Overview
Familiarize yourself with the components of your nasal irrigation system:

Figure 2: Labeled components of the Nascool Electric Nasal Irrigation System.
- Nozzles (Nose Pillows): Soft silicone tips for nasal insertion.
- Nozzle Base: Connects nozzles to the main unit.
- Mode Selector: Buttons for selecting gentle or strong cleaning modes.
- Power Light: Indicates device status.
- Filter: Prevents impurities from entering the nasal passages.
- Saline Solution Chamber: Holds the prepared saline solution.
- Waste Liquid Chamber: Collects used solution during rinsing.
5. Setup
Follow these steps to prepare your device for use:
- Prepare Saline Solution: Use one of the included salt packets with 200ml of distilled, filtered, bottled purified, or pre-boiled water. Ensure the water temperature is appropriate (refer to the temperature sticker on the mixing cup, if available, for 'OK' range).
- Fill Solution Chamber: Pour the mixed saline solution into the Saline Solution Chamber up to the 'MAX' line.
- Assemble Device: Securely attach the main body to the solution chambers.
- Battery Check: The device comes with 2 preinstalled AA batteries. If the device does not power on, use the provided screwdriver to open the battery compartment and ensure batteries are correctly inserted with proper contact.

Figure 3: Visual guide for preparing the saline solution and assembling the device.
6. Operating Instructions
To perform a nasal rinse:
- Positioning: Slightly lower your head and gently insert the nozzles into your nostrils to create a complete seal.
- Nozzle Orientation: Rotate the nozzle base 180° so the side with the 'up' arrow targets the more blocked nostril.
- Select Mode: Choose your desired cleaning mode. The upper button provides gentle cleaning, recommended for first-time users. The lower button provides strong cleaning with higher water flow pressure.
- Start Rinsing: Press and hold the power button to begin the sinus rinse. Continue holding the button throughout the rinsing process.
- Pressure Relief: The device is equipped with a pressure relief valve that automatically activates if severe nasal congestion or sudden pressure increases are detected, ensuring a safe rinsing experience.
- After Rinsing: Once complete, release the power button. Gently blow your nose to remove any remaining solution.

Figure 4: Illustration of nozzle rotation and waste liquid collection during operation.
7. Maintenance and Cleaning
Proper cleaning ensures hygiene and extends the life of your device:
- Waste Collection: The system features separate clean water and waste water tanks. Waste liquid is automatically collected in the designated tank during rinsing.
- Self-Cleaning Function: After each nasal wash, the Self-cleaning Pipe assists in thoroughly cleaning the device with water.
- Accessory Cleaning: Clean all removable accessories, including nozzles and tanks, with water below 70°C (158°F). Wipe them dry with a clean gauze. Avoid using hot water.
- Post-Use Cleaning: After each use, clean the nozzles. Then, assemble the cleaning cap onto the nozzle base to initiate the machine's self-cleaning process.
- General Care: The product is designed for hand wash only.

Figure 5: Illustration of the device's self-cleaning and waste collection features.
8. Troubleshooting
If you encounter issues with your Nascool Electric Nasal Irrigation System, refer to the following common solutions:
- Device Not Powering On:
- Check that the 2 AA batteries are correctly installed in the battery compartment. Ensure positive and negative terminals are aligned as indicated.
- Verify that the battery contacts are clean and free from corrosion.
- Difficulty Opening/Assembling Parts:
- Ensure all components are aligned correctly before attempting to twist or snap them into place.
- Do not force parts. If resistance is met, re-check the assembly instructions.
- No Solution Flow:
- Ensure the Saline Solution Chamber is filled above the minimum level.
- Check that the nozzles are properly sealed in the nostrils.
- Confirm that the power button is pressed and held continuously during operation.
If problems persist, please contact customer support.
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | MFNI-05HL |
| Product Dimensions | 5.51 x 5.51 x 9.06 inches |
| Weight | 2.27 Pounds |
| Manufacturer | NASCOOL |
| Power Source | Battery Powered (2x AA batteries) |
| Recommended Age | Above 12 years old |
| Product Care | Hand Wash Only |
10. Warranty and Support
Your Nascool Electric Nasal Irrigation System comes with a 1-year warranty. This warranty covers defects in materials and workmanship under normal use.
If your product is damaged or defective, it is eligible for a refund or replacement within the warranty period. For any problems, questions, or warranty claims, please contact Nascool customer support directly. Refer to the product packaging or the seller's information for contact details.
Always refer to this user manual for proper operation and care to ensure the validity of your warranty.
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