VARON NT-2 Portable Oxygen Concentrator User Manual

VARON NT-2 Portable Oxygen Concentrator

Product Information: NT-2 Portable Oxygen Concentrator

The NT-2 Portable Oxygen Concentrator is a compact and lightweight device designed for oxygen supplementation in high-altitude or low-oxygen environments. It utilizes a pure copper oil-free compressor and a high-quality French molecular sieve to produce high-purity oxygen through a Pressure Swing Adsorption (PSA) method at room temperature. This product is powered by a DC12V power supply or a removable battery pack.

Important Safety Precautions

• In case of power failure or equipment failure, users in urgent need of oxygen should have other standby oxygen supply devices.
• This product is not suitable for life support or life extension and is not intended for use by newborns or infants.
• Smoking is prohibited when the equipment is working due to the risk of combustion.
• Avoid using the equipment in high temperatures or environments with sparks or open flames.
• Children should not operate the equipment alone, and the elderly with mobility difficulties should be accompanied by a guardian during use.
• Avoid using the product in environments containing oil smoke, toxic, or harmful gases.
• Do not connect the product with other equipment not allowed by the manufacturer.
• Contact the equipment supplier for any damaged or lost accessories.
• Only use lithium batteries equipped with the product.
• Protect the battery and device interfaces when not in use, avoiding contact with conductors or direct touch with hands.
• Remove the battery before discarding the equipment and follow relevant regulations for proper disposal.
•  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 supplement at high altitude 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 the environment containing oil smoke, 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 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 Usage Instructions

1. Read the user manual carefully before use.
2. Ensure that the equipment is properly installed and connected to a DC12V power supply or a fully charged battery pack.
3. Place the equipment in a well-ventilated area, away from high temperatures, sparks, or open flames.
4. Press the power button to turn on the device.
5. Monitor the oxygen concentration level through the low oxygen concentration alarm function.
6. Ensure the hose is not wrapped around the neck when breathing oxygen.
7. If using the device for health care or cosmetic oxygen therapy, adjust the oxygen flow rate according to your specific needs.
8. Keep track of the accumulated use time feature to monitor the machine’s usage.
9. When not in use, protect the battery and device interfaces from damage or contact with conductors.
10. If any accessories are damaged or lost, contact the equipment supplier for replacements.
11. Follow relevant regulations for proper disposal of the equipment and accessories when no longer needed.

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 references only and may vary from the actual product. Please refer to the actual product.

Working Principle
This product is powered by 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 totally physical method which is stable, safe and reliable.

Product Applications
Only for health care, and cosmetic oxygen therapy. not suitable for medical use.

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;
• Low oxygen concentration alarm function lets the user know 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 th5 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：
    Ambient temperature range: 10℃～35℃;
    Relative humidity range: 30%～75%;
    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 using.

13. 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

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.

Product Appearance

Right side view
Left side view
Note: It is normal that 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
Schematic diagram of battery replacement
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.

Panel Operation Introduction
Operation panel diagram

Buttons and functions

•  Power button: To start and stop the machine. Long press the button for 3 seconds, the digital screen and battery indicators will light up; then short press the button, the machine will start to work. In the working state, short press the power button, 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 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.

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.

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

Use of on-board power cable
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)
  

Use of AC adapter
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. Wear the disposable oxygen inhaler as shown on the left, adjust the nasal cannula to the appropriate position, and push the fixing ring up to fix it after wearing.
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.
   

Charge the battery separately

If you need to stop supplying oxygen during use, long press “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

2. 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;

3.  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 the device, and cannot charge the battery;

4. This device does not support the use of external battery packs;

5. The AC adapter and the car power cord will share the same power outlet, so they cannot be used at the same time;

6. 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;

7.  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.

8.  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.

9. Guidance for Use in Electromagnetic Environment
   In order 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.

10. 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.

11. Use and Purchase of Disposable Oxygen Inhaler

12.  Working mode of this equipment is pulse oxygen supply mode. To use this equipment, please connect it to an oxygen inhaler.

13. 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.

14.  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.

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.

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.)

Replace the Air Intake Filter Pad
Bottom of the machine
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, and 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.

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, charge to 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| Tube of the oxygeninhaler 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 odor 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 sound 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

Accessory
8| AC Adapter| 1| Optional Accessory
9| AC Power Cord| 1| Optional Accessory
10| Disposable Oxygen Inhaler| 2| Optional Accessory

References

• Fabbrica Veloce

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