Olive OLV-3 User manual

Oxygen Concentrator
User Manual
Please read the instruction carefully before
use the machine.
Issue Date: 2021.04.12,Ver.2.0
Version ：OLV-2-20210412

Table of Contents
1.
2.
3.
4.
Product Overview..........................................................................................................1
Safety Overview.............................................................................................................2
Operating Principle....................................................................................................... 4
Structural Features........................................................................................................5
5. Technical Indicators.......................................................................................................5
6.
7.
8.
9.
Product Installation....................................................................................................... 7
Product Use.....................................................................................................................8
Maintenance...................................................................................................................14
Troubleshooting............................................................................................................ 15
10. Transportation and Storage.......................................................................................17
11. After-Sale Services........................................................................................................18
12. Accessories.................................................................................................................. 18
13. Packing List................................................................................................................19
14. Annexed Table and Figure......................................................................................... 20
15. Important information regarding Electro Magnetic Compatibility (EMC).........21

1.Product Overview
Welcome to choose our medical oxygen concentrator !
Our series medical oxygen concentrator adopts AC 220V/AC110V power
supply, uses air as raw material and high-quality molecular sieve as adsorbent, and
adopts the principle of pressure swing adsorption (PSA) to directly separate oxygen
from nitrogen at normal temperature, oxygen of high purity is thereby produced.
In order to ensure the safety and effectiveness of medical oxygen concentrator,
please read this manual carefully before using the machine, so as to have a
comprehensive understanding and knowledge of the product performance as well
as correct operation and maintenance methods. Please strictly observe relevant
safety precautions during installation, use and maintenance.
1.1 Functions of oxygen
By supplying oxygen to patients, the machine can help the treatment of
cardiovascular and cerebrovascular diseases, respiratory diseases, chronic
obstructive pneumonia etc. and the rehabilitation of anoxic patients.
Oxygen absorption can improve physical oxygen supply condition and achieve the
purpose of oxygenating care. It is suitable for the middle-aged and elderly, people
with poor physical fitness, pregnant women, students and other people who suffer
different degrees of physiological hypoxia. It can also eliminate fatigue and restore
somatic function after heavy physical or mental exertion.
1.2 Scope of application
It is applicable for oxygen generation in medical institutions and family etc. for the
use of anoxic patients.
1.3 Product features
1) Plastic casing, novel design, simple operation, stable operation, easy
maintenance.
2) Generate oxygen adopting physical methods, with air as raw material, without
the use of additives, only needing power supply, with low cost.
3) Adopt pressure swing adsorption (PSA) technology of efficient molecular sieve,
with simple process flow and low energy consumption.
1.4 Specification & model
OLV-5
Atomization function (Optional function)
Product code, maximum recommended flow
W
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2. Safety Overview
2.1 Safety precautions
Safety Precautions
Warning
1. This product can not be used for life support or life sustaining. Patients who can not
express discomfort or can not hear or see alarm signals require additional care.
2. Oxygen therapy may be harmful under certain conditions. Patients shall correctly
control oxygen flow and oxygen absorption time under the guidance of physician.
3. Excessive use of high-purity oxygen has toxic and side effect on human body.
4. People suffering severe carbon monoxide poisoning shall not use this product.
5. To prevent power failure or possible failure of oxygen concentrator, when the
patientsin urgent need of oxygen and the critically ill patients absorb oxygen using this
product,other standby oxygen supply devices (e.g.: oxygen cylinder, oxygen bag, etc.)
must beprovided.
6. If the medical oxygen concentrator can not work properly, or if you feel
uncomfortable, please stop using immediately and consult physician or supplier to solve
the problems.
7. Oxygen is a kind of combustion supporting gas, thus the oxygen concentrator can
notbe used in places with open flame or the danger of flammability, smoking or open
flame isprohibited near people who absorb oxygen.
8. Power supply must comply with electrical safety regulations.
9. Please turn off the power and unplug the power cord before the cleaning and
maintenance of medical oxygen concentrator.
10. People without authorization of the company shall not open the cover for
maintenance.
11.When the altitude, ambient temperature, and relative humidity of the use
environment exceed the requirements of the use environment specified in this manual,
itmay cause a decrease in oxygen concentration and shutdown, which will affect the
qualityof the user's treatment.
12.Oxygen makes fires more likely to occur and spread. If the oxygenconcentrator
is turned on but not in use, do not leave the nasal cannula or mask onthe bed sheet or
chair cushion; oxygen will make the material flammable. When notin use, turn off the
oxygen concentrator to prevent local ambient oxygenconcentration from increasing.
13. The product is suggest to use in areas with stable power grid. For continuously
using this product under unstable power grid, an UPS is recommended.
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Attention
2.2 Electromagnetic environment guidance
Electromagnetic Environment Guidance
1. This product is suitable for use in places including hospitals, family and other
buildings connected with power supply of civilian low-voltage network.
2. Radio frequency energy used by this product is for internal operation only.
Therefore, its radio frequency emission is very low, without impact on other
electrical equipment nearby.
3. Due to the impact of radio transmitting devices or other sources of
electrical noise in health care establishments, serious interference caused by too
close distance or large transmitting power may cause interruption of this product.
4. If this happens, check the use places to find out the source of interference, and
take the following measures to eliminate interference: 1) Turn off nearby devices
before starting the machine; 2) Change the direction or location of interfering
devices; 3) Increase the distance between interfering devices and this product.
2.3 Environmental protection description
Environmental Protection Description
Attention
Disposal of waste and residues shall comply with the legal provisions of
corresponding countries.
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3.Operating Principle
Oxygen concentration process flow of Olive series medical oxygen
concentrator is shown in Fig. 1:
Fig. 1 Flow chart ofmedical oxygen generation
Our series medical oxygen concentrator uses molecular sieve as adsorbent,
adopts the principle of pressure swing adsorption (PSA), sends the air after
filtration into the molecular sieve adsorption tower for the cyclic process
ofpressurized adsorption and decompressed desorption, oxygen of high purity is
thereby produced.
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4. Structural Features
Our medical oxygen concentrator mainly consists of principal machine,
flow meter and humidifier bottle, as shown Fig. 2.
Fig. 2 Outline drawing of Olive series medical oxygen concentrator
5. Technical Indicators
The requirement of this medical oxygen concentrator for electric shock
protection measures is ClassⅡ, the requirement for electric shock protection degree
is type B.
5.1 Operating environment (oxygen concentration status indicator)
Ambient temperature: 10℃ ~ 40 ℃
Relative humidity: 30% ~ 75%
Atmospheric pressure: 860hPa ~ 1060hPa
Power supply:AC 220V±22V 50Hz ±1Hz ；
AC 110V±11V 60Hz ±1Hz
There shall be no corrosive gas or strong magnetic field in surrounding
environment
5.2 Air requirements
Impurities in raw material air: ≤0.3 mg / cm3
Oil content in air: ≤ 0.01ppm
5.3 Product functions
Timing function: show the total working time through display screen
Time setting: set oxygen absorption time as required
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Automatic shutdown: automatic shutdown after reaching preset oxygen generation
time
Power failure alarm function
Low voltage alarm function
Low oxygen concentration alarm functio
Circulating pressure failure alarm function
Air compressor short circuit alarm function
Atomization treatment function (only models with atomization function)
5.4 Technical indicators
1) Physical and chemical indicators of oxygen:
Oxygen concentration: ≥ 90% (V/V)
Water content: ≤0.07g/ m3
Carbon dioxide content: ≤ 0.01% (V/V)
Carbon monoxide content: meet the requirements of table 1 in GB 8982－2009
Gaseous acid and alkali content: meet the requirements of table 1 in GB 8982－
2009
Content ofozone and other gaseous oxides: meet the requirements of table 1 in
GB 8982－2009 Odor: odorless
Particle size of solids: ≤ 10μm
Content of solids: ≤0.5 mg/m3
2) Technical indicators ofproduct:
The maximum recommended flow (when oxygen concentration ≥ 90%):
3L/min (models OLV-3 and OLV-3W); 5L/min (models OLV-5 and OLV-5W)
Flow range when outlet nominal pressure is 7 kPa (oxygen concentration ≥ 90%):
0～3L/min (models OLV-3 and OLV-3W); 0～5 L/min (models OLV-5 and
OLV-5W)
At the recommended maximum flow, flow change when the back pressure of7
kPa is applied: <0.5L/min Flow range when outlet nominal pressure is 0
(oxygen concentration ≥ 90%): 0～3L/min (models OLV-3 and OLV-3W); 0～5
L/min (models OLV-5 and OLV-5W)
Operating noise of the machine: ≤40dB (A)
Timer error: not more than 3%
Output pressure: 20kPa ~ 60kPa
Release pressure of air compressor safety valve: 200kPa ~ 300 kPa
Oxygen concentration measurement: 0～95%, error≤±3%
Operating mode: continuous operation
Atomization quantity: ≥0. 15mL/min (only models with atomization function)
Inputpower: 330VA±15% (models OLV-3 and OLV-3W); 500VA±15% (models
OLV-5 and OLV-5W) Power supply: 220V-230V 50HZ/60HZ
Total weight: 19kg (models OLV-3 and OLV-3W); 22kg (models OLV-5 and
OLV-5W)
External dimensions: 490×270×560 (mm) L × W × H
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6. Product Installation
6.1 Unpacking inspection
Open the carton box from top of the packing box, and then open the plastic
bag, pull up the medical oxygen concentrator by grasping the front and back
handles of medical oxygen concentrator. Carefully check whether there is any
transport damage to the medical oxygen concentrator, and then check the
accessories and relevant documents according to the packing list.
6.2 Installation precautions
Installation Precautions
Attention
1. Medical oxygen concentrator shall be installed in indoor ventilating places
without dust, corrosive, toxic or harmful gases or smoke. Avoid direct sunlight, and
the distance from walls and other objects shall be greater than 10cm.
2. Medical oxygen concentrator shall not be installed in places with open
flame, fire source, danger of flammability or explosion, humidity, too high or too
low temperature. Besides, it shall not be used in a closed room (space).
3. No sundries, water or oil containers shall be placed on top of medical oxygen
concentrator.
4. Medical oxygen concentrator shall not be placed on soft surfaces (e.g. bed,
couch) that may cause tilting or sinking, avoid shutdown or oxygen concentration
decrease caused by too high temperature due to blockage of air inlet or outlet.
5. Medical oxygen concentrator shall be placed smoothly, otherwise it will
increase the noise during operation.
6. If grid voltage is instable and exceeds the range of 220 ± 22V, please install
voltage stabilizer before use.
7. Be sure to install battery before use, otherwise it will lose some alarm
functions.
8. Please use safe and qualified socket and the wiring board with safe electricity
certification.
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7. Product Use
7.1 Use precautions
Use Precautions
Attention
1. During use, ensure unobstructed exhaust at the bottom of medical oxygen
concentrator, otherwise it may cause internal overheating.
2. When the output oxygen is less than the maximum recommended flow, oxygen
concentration reaches 90%. When the flow exceeds the maximum recommended flow,
oxygen concentration will reduce with the increase of flow.
3. Medical oxygen concentrator will reach the specified performance after started for
10 minutes.
4. There will be intermittent exhaust sound (every 6 seconds around) during operation
of medical oxygen concentrator, which is normal.
5. No oil, grease or other similar substances shall be used on or near medical oxygen
concentrator, and no lubricant other than those recommended by the manufacturer shall
be used.
6. During use, timely add water when water level of humidifier bottle is below the
minimum level.suggest use our company humidifier bottle .
7. During atomization treatment, please do not use medical oxygen concentrator for
oxygen absorption.
8. Medical oxygen concentrator shall not be started frequently, it shall be restarted
after stopped for 5 minutes.
9. When the indicated oxygen concentration is abnormal, stop using, and contact the
dealer or manufacturer for inspection and maintenance.
10. Molecular sieve will become aging due to use time and environment etc., causing
unrecoverable decrease of oxygen generation amount. In case of this phenomenon,
please contact the dealer or manufacturer to replace the molecular sieve.
11. For long-term stopping of medical oxygen concentrator, be sure to unplug the
power cord.
12.Oxygen tube and nebulizer kits are one-time use parts, users buy according to their
needs.
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7.2 Operation
Control panel ofmedical oxygen concentrator is shown in Fig. 3.
1)Add water to humidifier bottle: Pull out the silicone rubber tube from the bottle,
take out the bottle. Add proper amount ofpure water to the bottle, the water level
shall be between the maximum (MAX) and minimum(MIN) water lines, and then
tighten the bottle cap, put into the transparent cover and insert the silicone rubber
tube.
2) Power on: plug in the power cord, press the "Power switch", the "Power"
indicator will be on. Medical oxygen concentrator enters into the ready-to-start
state, which means that the medical oxygen concentrator enters into the ready-to-
start state
3) Continuous/timed oxygen generation: Press the "Oxygen generation/timing
button", oxygen concentrator will be started and enters into "Continuous" oxygen
generation working state. The LCD displays the total use time and other contents of
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oxygen concentrator, as shown in Fig. 5. After medical oxygen concentrator is
started, press the "Oxygen generation/timing button" again, medical oxygen
concentrator will enter into timed oxygen generation state, and the timing is 30
minutes (see Fig. 6), for each press of "Oxygen generation/timing button", preset
time will be increased by 30 minutes (maximum preset time is 120 minutes); users
can preset the time for oxygen generation as required. After a timing of 120
minutes, press the "Oxygen
generation/timing button" again, oxygen concentrator without atomization
function will stop oxygen generation, while oxygen concentrator with
atomization function will enter into atomization mode, press the "Oxygen
generation/timing button" again, it will stop oxygen generation.
Total time: 00000H
Oxygen is being generated
30 minutes
Fig. 6 Display of timed oxygen generation
4) Adjust flow: Open the transparent cover, slowly rotate the flow control knob
to the desired flow rate (the reading shall be subject to the center of the black
float) in the direction marked on the "Flow control knob". Meanwhile, there are
bubbles in water in humidifier bottle, there shall be oxygen output from "Oxygen
outlet".
5) Start oxygen absorption: Insert oxygen tube in the "Oxygen outlet" of
humidifier bottle, close the transparent cover, after confirming that there is oxygen
output from oxygen tube nose, wear the oxygen tube (see oxygen tube operating
instructions for wearing methods ofoxygen tube) to start oxygen absorption.
6) Automatic shutdown: After reaching the preset oxygen generation time,
oxygen concentrator will automatically shut down. The display ofLCD is shown in
Fig. 7.
Total time: 00038H
Shutdown
Time out
Fig. 7 Shutdown display
7) Shut down immediately: During operation of medical oxygen concentrator,
press the "Power switch" on top cover, medical oxygen concentrator will shut down
immediately.
8) Atomization function: (atomization models only)
①Before using the atomizer, please refer to Operating Instruction
ManualforAtomizer.
②Open the transparent cover of oxygen concentrator, unscrew the plug from the
atomization mouth, insert the air inlet pipe of the atomizer in the atomization mouth.
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③
Shutdown High
pressure
Fault indicator Red
Fault indicator Red
Table 1 Alarm functions
Alarm item Cause Alarm
sound Color ofindicators Display ofLCD
Power failure alarm Power supply voltage
interruption Yes N/A
Low voltage alarm
Power supply voltage is less
than 180V±10V Yes Fault indicator Red Low voltage
Oxygen
concentration alarm
65%(±3%)≤Oxygen
concentration＜82%(±3%) Yes N/A
Failure Oxygen
concentration≤65%(±3%) Yes Low concentration
High pressure alarm Circulating system pressure is
high
Yes
Low pressure alarm Circulating system pressure is
low
Yes Low pressure
Air compressor
failure alarm
Short circuit ofcompressor Yes
Shutdown Air
compressor failure
After medical oxygen concentrator is started, press the "Oxygen
generation/timing button" for 5 times, oxygen concentrator with atomization
function will enter into atomization mode.
④After atomization is finished, pull out the air inlet pipe ofatomizer,
tighten the atomization plug.
⑤For long-term stopping ofmedical oxygen concentrator, be sure to
unplug the power cord.
7.3 Alarm functions
After medical oxygen concentrator is started and generates oxygen for 10 minutes,
during normal operation, "Power", "Oxygen concentration" and "Fault" indicators are
green.
In case of faults listed in Table 1, medical oxygen concentrator will send
audible/visual alarm. Alarm functions are shown in Table 1.
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Oxygen concentration
indicator Yellow
Oxygen concentration
indicator Red
Fault indicator Red
Fault indicator Red

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1) Power failure alarm
When grid voltage is suddenly interrupted (power failure), medical oxygen
concentrator will stop working and send alarm sound, fault indicator will be red,
please use after power on.
2) Low voltage alarm
When grid voltage is less than 150V ±10V, medical oxygen concentrator will
stop working and send alarm sound; fault indicator will be red; LCD displays "Low
voltage", it is recommended to install voltage stabilizer.
3) Oxygen concentration alarm
After medical oxygen concentrator is started and generates oxygen for 10
minutes, under the circumstance that the output oxygen flow is not greater than the
maximum recommended flow:
When oxygen concentration is 82%( ±3%) or more, the oxygen concentration
indicator is green. Medical oxygen concentrator works properly.
When oxygen concentration is within 65%(±3%)～82%(±3%), the oxygen
concentration indicator is yellow and sends alarm sound, contact the dealer
immediately, users can temporarily use the machine, and please ensure that there is
standby oxygen.
When oxygen concentration is below 65%(±3%), the oxygen concentration
indicator is red and sends alarm sound, LCD displays "Low concentration". Please
shut down immediately. Use standby oxygen and contact the dealer for inspection
or repair.
4) High/low pressure alarm
When circulating system pressure is high, medical oxygen concentrator shuts
down and sends alarm sound; fault indicator is red, the LCD displays "High
pressure".
When circulating system pressure is low, medical oxygen concentrator sends
alarm sound; fault indicator is red, the LCD displays "Low pressure".
In case of high pressure or low pressure alarm, please use standby oxygen and
contact the dealer for inspection or repair.
5) Air compressor failure alarm
In case of short circuit of air compressor circuit, medical oxygen concentrator
shuts down and sends alarm sound; fault indicator is red; the LCD displays "Air
compressor failure", medical oxygen concentrator stops running.
Please use standbyoxygen and contact the dealer for inspection or repair.

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6) Check whether the alarm system works
When it is necessary to check whether the alarm system works, unplug the power
cord when medical oxygen concentrator works normally, if the fault indicator
becomes red and sends alarm sound, then the alarm system is normal, otherwise the
alarm system can not work normally, contact the dealer for inspection or repair.
7.4 How the operator check machine is normal :
The operator can check whether the oxygen concentrator is operating normally
by the following methods:
1) 10 minutes after the oxygen concentrator is turned on, the power indicator,
oxygen concentration indicator, and fault indicator should be green.
2) In the state of oxygen generation, block the oxygen outlet of the oxygen
concentrator by hand, and the flowmeter should be able to return to the "0" position.
If the above two points are met, it means that the oxygen concentrator is operating
normally. Otherwise, the oxygen concentrator is not operating normally, you should
contact the dealer for inspection or repair

8. Maintenance
8.1 Maintenance considerations
Maintenance Considerations
Attention
1. Only the dealers authorized by the manufacturer or the qualified personnel
after special training can conduct preventive maintenance or performance
adjustment for medical oxygen concentrator.
2. In case of medical oxygen concentrator failure, contact the dealer or
manufacturer for repair. Do not disassemble for repair by yourself.
3. Clean the humidifier bottle every day. Add pure water to humidifier bottle and
the water level shall be between the maximum and minimum water levels.
4. Regularly clean air suction filtering foam and filtering cotton according to
requirements. Clean in advance in case of too much dust. oxygen concentrator shall
not be started before filtering cotton and foam are installed.
5. Power cord is provided according to the power of oxygen concentrator, please do
not replace arbitrarily.
8.2 Cleaning of humidifier bottle
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To clean, first pull out the silicone rubber tube from humidifier bottle, take out
the humidifier bottle. Humidifier bottle is generally cleaned with clean water, in case
of any water scale, rinse with clean water after descaling. During cleaning, pay
attention to cleaning the small air inlet hole at the bottom of the core tube in the bottle,
so as to keep oxygen unobstructed.
After cleaning, sterilize (soak in disinfectant containing available chlorine of
500mg/L) and rinse with pure water. Add proper amount of pure water to the bottle,
the water level shall be between the maximum (MAX) and minimum (MIN) water
lines, and then tighten the bottle cap, put into the transparent cover and insert the
silicone rubber tube.
8.3 Cleaning of atomizer (atomization models only)
After using the atomizer, pour out all residual liquid from atomizing cup, rinse
with clean water.
After cleaning, sterilize (soak in disinfectant containing available chlorine of
500mg/L) and rinse with pure water.
8.4 Cleaning of primary air suction filter (filtering sponge) and secondary
filter
Timely cleaning and replacement of primary air suction filter and secondary filter
are very important for protecting air compressor and molecular sieve, and extending
the service life of medical oxygen concentrator, please timely clean and replace
according to requirements.
Primary air suction filter shall be cleaned once a week. During cleaning, draw out
filtering sponge and rinse with clean water, it can be used after natural drying.

Secondary air suction filter shall be cleaned once every half month. During
cleaning, unscrew the filter clockwise, take out the filter and rinse with clean water,
after natural drying, install it to the original place and tighten counterclockwise.
8.5 Cleaning of medical oxygen concentrator
When turning off the power of medical oxygen concentrator, use a soft towel
dipped with a small amount of neutral household cleaner to wipe the casing, and then
use a dry towel to dry up. When wiping, pay attention to preventing liquid infiltrating
into casing slot.
8.6 Replacement of battery
When the power failure alarm sound of medical oxygen generated is reduced
significantly (users can check it by disconnecting the power supply of medical oxygen
concentrator), it is necessary to replace the battery. Battery specifications: 9V alkali
battery. To replace, open the battery compartment cover in the transparent cover,
remove the old battery, insert new battery according to the marked polarity.
9. Troubleshooting
In case of any problems during use, before sending the machine for repair,
please read this section carefully, you may simply solve the problems by yourself. If
the problems can not be solved according to the examples in
Table 2, please send the medical oxygen concentrator for repair. Do not attempt
to repair or remove the casing of medical oxygen concentrator by yourself.
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Table 2 Failure analysis and troubleshooting examples
Fault symptom Check item Measures
There is no display on
LCD when starting or
running, medical
oxygen concentrator
sends alarm sound.
1. Power failure?
2. Power cord is loose?
1. Use the machine after
power on.
2. Check and insert the
power cord properly.
Concentration
indicator becomes
yellow or red.
1. Oxygen flow is too
large?
2. Molecular sieve
becomes aging after long
-term use?
1. Adjust the oxygen flow.
2. Replace molecular sieve.
Note: Replacement of molecular sieve shall be
conducted by professionals.
Medical oxygen
concentrator works
normally, but no
oxygen is outputted
from oxygen tube.
1. Whether the
oxygen tube is
inserted properly?
2. Whether the
humidifier bottle cap is
tightened?
1. Insert the oxygen tube
properly.
2. Tighten the humidifier
bottle cap.
Medical oxygen
concentrator works
normally, but the flow
can not be adjusted to
the maximum value,
bubbles in humidifier
bottle are small.
1. Air suction filter is
clogged with dust?
2. Oxygen tube is bent?
Operating noise is large.
1. Clean or replace filter.
2. Unbend the oxygen tube.
Whether medical
oxygen concentrator is
placed smoothly?
Place the medical oxygen
concentrator smoothly.
Alarm fault indicator is
red.
Low voltage It is recommended to
install voltage stabilizer.
Alarm fault indicator is
red.
Circulating pressure is
low.
1. Clean or replace filter.2.
If such situation continues,
please contact the
manufacturer.
Immediately stop using
the machine, please
Alarm fault indicator is
red.
Circulating pressure is
high. contact the manufacturer.
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Alarm fault indicator is
red.
Air compressor failure Immediately stop using
the machine, please
contact the manufacturer.
There is no alarm sound
during power off, alarm
indicator is not on.
Other faults
Are the batteries dead? Replace battery.
Contact the manufacturer
10. Transportation and Storage
10.1 Transportation and storage precautions
Transportation and Storage Precautions
Attention
1. Before transportation or storage, pour out the water from humidifier bottle.
2. During transportation and handling, medical oxygen concentrator shall be kept
upright, prohibit inversion or horizontal placing.
3. When the storage temperature is below 10 ℃, place the medical oxygen
concentrator in normal working
environment for 8 hours before use.
4. Medical oxygen concentrator that has been stopped for long time shall be
powered on for inspection before use again, and confirm that all functions are
normal before use again.
10.2 Requirements for storage and transportation environment
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Ambient temperature -20 ℃ ~ 50 ℃;
Atmospheric pressure 500hPa～1060hPa
Relative humidity ≤ 95%;
10.3 Transportation
Medical oxygen concentrator packed completely shall be protected from violent
collision and direct contact with rain or snow during transportation.
10.4 Storage
Medical oxygen concentrator shall be stored in indoor well-ventilated places without
strong sunlight and corrosive gases.

Attention Accessory Considerations
1. Do not use parts and accessories not recognized by the manufacturer, in order to
avoid adverse effects on safety and product performance.
2. Medical oxygen concentrator shall use dedicated humidifier bottle, for replacement,
please contact the dealer or manufacturer to purchase.
3. The presented oxygen tube is a disposable sterilization product, just for one person.
Users can purchase
qualified products with Medical Device Registration Certificate by referring to the
model and specification of the
presented sample.
11. After-Sale Services
11.1 Warranty period
In case of quality problems caused by non-human factors within one week since
the date of sale, our company will be responsible for guaranteed repairing, changing
and refunding; under normal use and storage conditions, the warranty period of this
product is two years or 5,000 hours (whichever is earlier), the warranty period
of compressor is three years. In case of any quality problems within warranty period,
our company will repair for free; In case of any quality problems after the warranty
period, our company will charge repair cost. If the users can not provide invoices,
the warranty period shall be regarded as one month since the ex-factory date of the
company.
11.2 Warranty scope：
The following circumstances shall not be within the free warranty of the company:
1) Damage due to improper operation of users or use under abnormal conditions;
2) Damage or deformation of machine (including components and parts) due to
collision or falling;
3) Damage due to disassembly, repair or modification by users;
4) Damage caused by natural disasters;
5) Wearing parts and consumables: atomizer, filtering foam, filtering cotton etc.;
11.3 Notice :
1) oxygen concentrator can only be repaired by the company authorized by the
company,and user cannot be disassembled privately
2) No modification to the oxygen concentrator.
12. Accessories
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