VARON NT-2 Portable Oxygen Concentrator User Manual

VARON NT-2 Portable Oxygen Concentrator

Product Information

• Specifications
  • Model: NT-2 Portable Oxygen Concentrator
  • Power Supply: DC12V or battery
  • Compressor: Pure copper oil-free compressor
  • Molecular Sieve: High-quality French molecular sieve
  • Working Principle: Pressure Swing Adsorption (PSA) method
  • Applications: Health care and cosmetic oxygen therapy
  • Structure: Full plastic shell, removable battery pack
  • Features: Accumulating use time function, low oxygen concentration alarm

Product Usage Instructions

• Safety Precautions
  • In case of power failure, have standby oxygen supply devices ready.
  • Do not use it for life support or life extension.
  • Avoid smoking when using the equipment.
  • Avoid high temperatures, sparks, or open flames.
  • Keep equipment away from children; elderly users should be supervised.
  • Avoid environments with oil smoke, toxic, or harmful gases.
  • Do not connect the product with unauthorized equipment.
  • Contact the supplier for damaged or lost accessories.
  • Use only specified lithium batteries.
  • Protect battery interfaces when not in use.
  • Dispose of equipment properly following local regulations.
• Product Introduction
  • Working Principle: Utilizes air to produce high-purity oxygen via the Pressure Swing Adsorption method.
  • Applications: Intended for health care and cosmetic oxygen therapy purposes only.
  • Structure: Features a full plastic shell, removable battery pack, and low oxygen concentration alarm function.
• Installation and Use
  • Connect the power supply or insert the battery.
  • Turn on the device and adjust the oxygen flow as needed.
  • Ensure proper ventilation around the equipment.
  • Monitor the oxygen concentration periodically.
• Maintenance
  • Clean the external surfaces with a soft cloth regularly.
  • Keep the air inlets and outlets clear of obstructions.
  • Check the battery condition and replace if necessary.
• Troubleshooting
  • If the device fails to turn on, check the power source and connections.
  • If oxygen concentration is low, ensure proper airflow and filter cleanliness.
• Packing List
  • NT-2 Portable Oxygen Concentrator
  • Battery pack
  • Power Supply
  • User Manual

FAQs

• Q: Can this product be used for medical purposes?
  • A: No, it is only suitable for health care and cosmetic oxygen therapy, not medical use.
• Q: What should I do if I encounter low oxygen concentration?
  • A: Ensure proper airflow, check for obstructions, and clean filters if needed.
• Q: How do I dispose of the equipment?
  • A: Remove the battery, then contact relevant authorities for proper disposal according to local regulations.

Preface

Dear users,

• This manual introduces the functional features, operation steps, precautions, and maintenance of the product in detail.
• To ensure that you can use the product more effectively, please read this manual carefully before use and keep it well for future reference.
• Users shall not disassemble the product without permission, otherwise you might lose your right to enforce the warranty.
• Please note that our company reserves the right to update our products and technologies. Some illustrations in the manual are for reference only and may vary from the actual product. Please refer to the actual product.

Safety Precautions

• In case of a possible power failure or equipment failure, users who are in urgent need of oxygen must be equipped with other standby oxygen supply devices (such as oxygen cylinders, oxygen bags, etc.). Note that this product cannot be used for life support or life extension! Not suitable for newborns or infants!
• The product is only used for oxygen supplements at high altitudes or in low-oxygen environments and cannot replace medical equipment.
• Oxygen supports combustion. Thus smoking is prohibited when the equipment is working!
• Do not use the equipment in high temperatures, or when there are sparks or open flames in the environment!
• To prevent accidents, do not let children operate the equipment alone. When breathing oxygen, do not wrap the hose around the neck; The elderly with mobility difficulties must be accompanied by a guardian during use.
• This product separates and purifies oxygen directly from the air for breathing. Therefore, please do not use it in an environment containing oil smoke, or toxic and harmful gases.
• This product cannot be connected with other equipment not allowed by the manufacturer.
• If any accessories are damaged or lost, please contact the equipment supplier.
• It is prohibited to use lithium batteries that are not equipped with the product.
• When the battery is not in use, please protect the interfaces on the battery and on the device. Do not contact them with the conductor or touch them directly with your hands.
• Remove the battery before the equipment is discarded and contact the relevant departments to properly dispose of the equipment and accessories according to the relevant regulations of the local government.

Product Introduction

1. Working Principle
   • This product is powered by a DC12V power supply or battery. Equipped with a pure copper oil-free compressor and a high-quality French molecular sieve, it uses air as raw material to produce high-purity oxygen through a new Pressure Swing
   • Adsorption method (PSA) at room temperature. This is a physical method that is stable, safe and reliable.
2. Product Applications
   • Only for health care, and cosmetic oxygen therapy. not suitable for medical use.
3. Product Structure
   • Full plastic shell, safe and reliable;
   • Comes with a removable battery pack, easy to install and replace;
   • Small in volume and light in weight, the product can be easily carried around;
   • The product has a function of accumulating use time, so you can keep track of how long the machine has been used;
   • The low oxygen concentration alarm function lets the user know the oxygen production status in real time;

Technical Parameters

1. Model NT-2
2. Power supply： DC12 16.8V AC100 240V 50 60Hz
3. Power： 68W
4. Battery capacity： 92Wh/6.4Ah
5. Flow gear： 1～5gear (the flow is highest at 5 gear)
6. Oxygen concentration： 93%±3
7. Noise level： ≤58dB(A) (noise value at the highest gear)
8. Dimensions： 18.29.125.7cm/7.163.5810.12’’
9. Net weight： 2.2kg
10. Electrical classification： Class II
11. Oxygen supply mode： pulse oxygen supply
12. Normal working environment：
13. Ambient temperature range: 10℃～35℃;
14. Relative humidity range: 30%～75%;
15. Atmospheric pressure range: 860hPa～1060hPa;
    • Note: When the storage and transportation temperature is lower than 5℃, the equipment should be stored at normal operating temperature for more than 4 hours before use.
16. Storage and transportation environment：
    • Ambient temperature range: -20℃～60℃;
    • Relative humidity range: 10%～93%, and there is no frost phenomenon in the environment;
    • Atmospheric pressure range: 700hPa～1060hPa
    • Note： The oxygen generator should be stored in a well-ventilated room without strong sunlight, or corrosive gas inside. Avoid severe shock or turning the product upside-down during transportation.

Installation and Use

1. Check After Unpacking
   • Before installing and operating the product, please check whether the appearance of the product is intact, and whether the numbers of accessories are consistent with the packing list in the manual.
   • In case of any defects, please contact the seller or manufacturer promptly.
2. Product Appearance
   • Note: Normally, there is hot air discharged out of the heat dissipation vents. Ensure smooth air flow of the air inlet and the outlet.
   • Recommended Method For Battery Removal
   • Note: Users shall not remove the battery without permission. If necessary, the product needs to be returned to the distributor or ask for a professional to dispose of it.
3. Panel Operation Introduction
   • Buttons and functions
   • Power button: To start and stop the machine. Long press the button for 3 seconds, and the digital screen and battery indicators will light up; then short press the button, and the machine will start to work. In the working state, short press the power button, and the machine will stop working; then press and hold for 3 seconds to turn off the digital screen and battery indicators.
   • Grade: To adjust oxygen flow rate;
   • Time: To set the duration of each use. Adjustable from 0~240 minutes;
   • Contents displayed on the screen
   • Accumulated hours: Shows how long the device has been working (unit: hours)
   • Timing/Min: Countdown of preset working time. Displays how much time is left before the device automatically shuts down (unit: hours)
   • Note: The screen shows either the accumulated time or the timing. Accumulating time is displayed by default and it will be switched to the timing function when you press the “Timing/Min” button. If no other operation is performed, it will automatically switch back to display the accumulated hours after 10 seconds.
   • Level: Oxygen flow rate setting. 5 gears in total and the flow is highest at 5 gear.
     Gear| 1| 2| 3| 4| 5
     ---|---|---|---|---|---
     Single pulse oxygen flow rate (ml)| 15| 20| 30| 40| 50
     The allowed error is ± 20%.
   • Battery indicators: Shows the current battery capacity, which is calculated based on the real-time voltage value and may deviate from the actual situation. For reference only.
   • There are 4 battery indicators on the operation panel:
   • Alarm light & breath signal light
   • Alarm light: Red or yellow light will be on and there will be alarm codes shown on the screen when the device is operating abnormally.
   • F0001 —- Low Battery Warning (yellow light on)
   • F0002 —- No Breath Detected (yellow light on)
   • F0006 —- Oxygen Concentration Below 82% (yellow light on)
   • F0007 —- Oxygen Concentration Below 50% (yellow light on with an alarm)
   • F0011 —- High Temperature (red light on with an alarm)
   • F0012 —- Oxygen Sensor Abnormality (with an alarm)
   • Breath signal light: This light flashes when the user’s breathing is detected during the operation of the device, and the device automatically starts the pulse oxygen supply.
4. Use Guidance
   • Connect the power supply
   • Select the appropriate power connection method according to the use environment.
   • Use with built-in battery only
   • The device has a built-in battery installed by default. It can be turned on if there is sufficient battery capacity.
   • Use with an on-board power cord in the car
   • Connect the input end of the car power cable to the car cigarette lighter, and the output end to the charging port of the oxygen concentrator. If the red light on the car power cord lights up, it means that the power supply is connected properly.
   • Required input: DC12~16.8V/5A.
   • Use with an AC adapter (optional)
   • Connect the AC adapter to an AC power cord firmly, plug it to the socket, and then connect its output end to the oxygen device. Red indicator on the AC adapter indicates good power connection and the battery is charging normally.
   • The indicator will turn green after the battery is fully charged.
   • Required input: AC100~240V 50/60Hz.
   • Connect the disposable oxygen inhaler (optional accessory)
   • Securely connect the flared end of the disposable oxygen inhaler tube to the oxygen outlet of the device and wear the other end as shown below.
   • Note that the tube of the disposable oxygen inhaler should not be kinked or blocked, so as not to cause the equipment to alarm or to affect normal use.
   • If you need to purchase an oxygen inhaler, please contact the equipment provider or professional medical staff.
   • Start to use
   • Press the “Power” button to start the machine. Select a suitable gear by pressing the gear button, and wear a disposable oxygen inhaler appropriately to start inhaling oxygen.
   • Oxygen supply mode of the equipment is pulse oxygen supply with a built-in breathing sensor. When the user inhales, the machine will automatically release oxygen, while the “breath signal” light will flash; the machine will stop releasing oxygen when the user does not inhale.
   • When the user does not inhale for more than 10 seconds, the machine will switch to active oxygen supply mode, releasing oxygen at a frequency of about once every 3 seconds until the machine re-detects the user’s breathing signal, that is, the original oxygen supply mode will be restored.
   • How to charge the batteries
   1. As shown in Figure 7, connect the AC adapter to charge the battery;
   2. Remove the battery according to the method shown in Figure 3, and then connect it to an AC adapter according to Figure 7 to charge.
   • If you need to stop supplying oxygen during use, long press the “Power” button for 3 seconds to shut down.
   • After use, unplug the disposable oxygen inhaler from the oxygen outlet of the device, then unplug the power cord from the device, and finally cut off the power supply.

Precautions for Use

1. Battery Charging
   • Due to transportation control and other reasons, the device’s battery only has enough power for testing or has no power at all when it leaves the factory. Therefore, before the first use, the device needs to be charged;
   • The battery will only be charged when using the AC adapter; If the car power cord is used, it can only supply power to the device, and cannot charge the battery;
   • This device does not support the use of external battery packs;
   • The AC adapter and the car power cord will share the same power outlet, so they cannot be used at the same time;
   • When the battery of the device is less than 25%, the power indicator will flash. Please connect the power adapter or charger to power the device in time;
   • When the device is not working, the battery in the device is fully charged for about 4-8 hours. The full charge time is extended to 9 hours when the device is working.
   • When using the car power cord in the car, please turn on the engine of the car, and do not use the device when the engine is turned off to prevent the battery in the car from losing power. Only the on-board power cord dedicated to this device can be used.
2. Guidance for Use in Electromagnetic Environment
   • To prevent this machine from being interfered with by the strong electromagnetic environment or interfering with other electrical products, please keep the product at least 30cm apart from other household appliances during use.
3. Non-professional personnel shall not disassemble the oxygen concentrator. If the professional maintenance personnel needs the electrical schematic diagram of the product, please contact the manufacturer or the after-sales service.
4. Use and Purchase of Disposable Oxygen Inhaler
   • The working mode of this equipment is pulse oxygen supply mode. To use this equipment, please connect it to an oxygen inhaler.
   • For the oxygen concentrator to correctly detect breathing and deliver pulsed oxygen, make sure that the disposable oxygen inhaler is installed correctly and that the tubes of the oxygen inhaler are not kinked or blocked.
   • Do not use an oxygen inhaler that is not suitable for this device. Please purchase an appropriate oxygen inhaler under the guidance of the equipment provider or professional medical staff to ensure the normal operation of the equipment and the normal use of the user.

Maintenance

1. Clean the Shell
   • The outside of the machine should be wiped clean at least once a month. Cut off the power supply and then wipe it with a slightly damp cotton cloth or sponge.
   • Be careful not to seep liquid into the cracks of the chassis.
   • After cleaning, place the machine in a ventilated place for about 2 hours, and wait until the surface is completely dried before using.
2. Clean the Disposable Oxygen Inhaler
   • The oxygen inhaler should be cleaned once a week, and the nasal cannula on it should be cleaned after each use.
   • Soak the inhaler into vinegar for about 5 minutes, and then rinse with clean water, or wipe with medical alcohol. It is recommended that the oxygen inhaler be replaced every 2 months of use. (Note: The inside of the oxygen inhaler tube should be kept dry.)
3. Replace the Air Intake Filter Pad
   • The main function of the intake filter pad is to filter and adsorb dust and impurities in the air, which may cause a blockage after a long period of use, thus affecting the oxygen production effect of the machine.
   • Therefore, it is recommended to replace it every six months; and if the environment is dusty, replacing it once a quarter is recommended.
   • Note that the filter pad can not be washed and reused, otherwise it will affect the performance and life of the machine!
   • Replacement method: Remove the battery according to the method shown in
   • Figure 3, lay the machine flat, and remove the two silicone stoppers as shown in
   • Figure 8. You will see the round air intake filter pad inside. Take it out with tweezers, put in the new pad, and finally put the silicone stopper back in place.
4. Battery Maintenance
   • If the machine is not used for a long time, it is necessary to charge it every three months to avoid deterioration of battery performance due to long-term low power or non-use.
   • For each charge, a charge of 25%-50% will be fine. This operation is not required if the product is in normal use.

Problems and Solutions

charge the battery
Poor connection of the power cord| Check power connection
The battery was installed incorrectly| Reinstall the battery correctly
The machine broke down| Contact the seller
No oxygen output| The tube of the oxygen inhaler is knotted or blocked| Replace it with a new oxygen inhaler
The oxygen inhaler is not tightly connected to the equipment, causing air leakage| Reinstall the inhaler correctly
The machine broke down| Contact the seller
There is an odour in the oxygen| The oxygen inhaler has not been cleaned for a long time, resulting in dirt in the tube| Clean or replace in time
There will be a slight smell of disinfection in the initial use of the product, which is a normal phenomenon| The smell will disappear automatically after a few days of use
The molecular tower inside the machine is blocked| Contact the seller
Regular and slight sounds inside the machine| The nitrogen emission sound produced by the machine during oxygen production| This is the normal sound of the machine as it works to produce oxygen and expel nitrogen

Packing List

Please read the manual carefully before use.

References

• Fabbrica Veloce

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