MeiLing ZY-F1WA2 User manual

Small Household
Oxygen Concentrator
Operation Manual
Applicable models:
ZY-F1WA2/ZY-F2WA2
Zhongke Meiling Cryogenics Company Limited
Zhongke Meiling Cryogenics Company Limited
Address: No 1862 Zishi Road, Hefei City, Anhui, P.R. China
Production Address: No.1862 Zishi Road, Economic and
Technological Development Zone, Hefei City
Post Code: 230601
Email: [email protected]; [email protected]
Website: www.melingbiomedical.com
Material Code:
Production Date: See nameplate on the freezer body
Prepared in: June 2020

Table of Contents
1. Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. Precautions for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3. Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4. Product Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5. Operation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6. Care and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7. Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8. Technical Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
9. Packing List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
1. Application Notes
Thank you for choosing MELING BIOLOGY & MEDICAL products!
To ensure that you can use this product safely and correctly, please read through this
manual before use. This manual introduces the relevant information of the small household
oxygen generator, including application notes, precautions for use, product information,
product installation, operation Instructions, care and maintenance, troubleshooting, etc.
Note: The legend in this manual may not be the same as the machine, thus the real object
shall prevail.
If you have any problems or other issues during use, please contact the dealer or the
manufacturer's after-sales service team.
Ø After reading this manual, please keep it properly for your reference at any time.
Ø The warranty card is attached and shall not be lost.
Ø See the warranty card for the date of production.
Ø The figures in this manual are effect presentation.
Ø If the operator encounters any situation not mentioned in this manual, please contact
MELING BIOLOGY & MEDICAL or the dealer authorized by the company to inquire
about the correct handling method.
Ø Please read the Precautions for Use carefully.
Ø The maintenance or performance debugging of the equipment can only be completed
by MELING BIOLOGY & MEDICAL or the dealer authorized by the company.
Ø If the equipment is not used according to the method specified in the specification, it
may be damaged.
Ø Try to use the accessories provided by MELING BIOLOGY & MEDICAL. If users would
like to use other accessories, MELING BIOLOGY & MEDICAL will not be responsible
for the adverse consequences caused therefrom.
Tips
● Always use protective equipment correctly
● Always keep good hygiene habits
● Each personnel is obliged to be responsible for his or her own safety

2. Precautions for Use
2.1 Before installation and operation
Ø During transportation, the oxygen generator must be placed vertically and shall not be
put upside down to prevent damage.
Ø In case that the supply voltage is unstable and exceeds AC 220V ± 22V, please use it
after installing a voltage stabilizer. Please select safe and acceptable outlet and terminal
block with safety electrician certification.
Ø Do not place the oxygen generator in the environment with airflow obstruction. Put it in
the ventilated indoor area and avoid direct sunlight. All sides shall be more than 10cm
away from walls, furniture and other similar objects. Avoid placing it near piles of
carpets, heaters, electric stoves or hot air ventilation equipment. Do not place the
oxygen generator in the narrow space.
Ø Do not place the oxygen generator in the following environment: near heat sources and
open and dying fire sources or places with smoke pollution, humidity, no shelter, and
over high or low temperature.
Ø There shall be no sundries or water and oil containers on the top of the oxygen
generator.
ØDo not place any sundries at the bottom of the oxygen generator, or place it on the soft
surface (such as bed and sofa) that will cause tilting or sinking. The air inlet should be
kept away from fluff, hair or other similar objects. The air inlet and outlet shall be
prevented from blocking, which will cause over high temperature and further cause
shutdown or oxygen concentration decrease.
2.2 Precautions for use (please read the following content before use)
The relevant identifications and their meanings are as below:
Keys Content
Warning
Attention
means that it may lead to death or serious injury in case of incorrect use
means that it may lead to personal injury or item damage in case of
incorrect use
means compulsion (things that must follow). The picture on the left shows
"general compulsion."
means prohibition (things that must not do). The picture on the left shows
"general prohibition."
Warning
For your safety, in terms of oxygen flux and oxygen absorption time, please
use it under the guidance of a doctor.
To prevent power failure or possible failure of the oxygen generator, users in
urgent need of oxygen and critically ill patients are prohibited from using the
oxygen generator or must be equipped with other standby oxygen supply
devices (such as oxygen cylinders, oxygen bags, etc.).
The oxygen generator is not applicable to operations or rescue without
spontaneous breathing function.
The power cord and plug shall be used correctly, otherwise they may cause
fire or electric shock, burns and other hazards. Do not use any damaged
power cord or plug.
Oxygen is combustion air. Do not smoke when using the oxygen generator,
and keep it away from flammable and explosive occasions.
Do not allow children and people without independent consciousness to use it.
In addition, do not step on the oxygen generator, climb up to the oxygen
generator or play with the oxygen generator.
Those with acute cardiopulmonary failure, airway obstruction, allergy to the
oxygen generator materials and drugs used in combination are prohibited to
use the concentrator.
The oxygen generator cannot be used to maintain any life, only for oxygen
replenishment.
Severe congenital heart disease patients shall use the oxygen generator with
care!
If a patient has discomfort or abnormal reaction in use, please stop using the
oxygen generator immediately and contact the doctor in time.
Do not place the oxygen generator near a strong magnetic field or an
electromagnetic interference source.
Do not use the oxygen generator when the plug inserted into power socket is
loose, or the power cord or power plug is damaged.
To avoid electric shock, do not open the oxygen generator housing on your own.
It is forbidden to drag and pull the oxygen generator through the traction of
oxygen inhalation tube or power cord.
Do not put the oxygen generator in places subject to drops of water or other
liquids. If the oxygen generator falls into water, do not touch it, cut off the
power immediately and contact a qualified dealer or the manufacturer.
When the oxygen generator is powered on, it is forbidden to leave the machine
unattended.

Attention
When removing the package, please handle the plastic bags properly to
prevent suffocation caused by children in playing.
Please use the oxygen generator within the specified temperature range.
For treatment using the atomization mode, please follow the doctor's advice on
the type, dosage and usage of medical solution. With regard to coma and
sputum patients, please follow the doctor's advice for treatment.
Atomization mask is a disposable product. Please do not use it many times to
avoid any possible harm.
Do not insert or remove the plug of the power cord with wet hands.
Do not disassemble, repair or modify the oxygen generator without
authorization.
Do not connect the oxygen generator with other oxygen generators or oxygen
therapy equipment in parallel or in series.
Do not keep or use the oxygen generator in corrosive environment.
The humidification bottle shall be supplied with water based on the water level
according to the instructions.
It is forbidden to use oil or grease substances in the oxygen generator.
Please do not kink the oxygen inhalation tube.
When placing and using the oxygen generator, please avoid falling or tilting it.
In case of power failure, please pull the power cord out of the power socket.
During maintenance, please pull out the power cord plug.
3. Product Information
3.1 Scope of application
Ø Medical institutions and families use it to produce oxygen for oxygen supply to
patients with hypoxia.
3.2 Effects of oxygen
Ø By supplying oxygen to patients, it can cooperate with the treatment of cardiovascular
and cerebrovascular diseases, respiratory diseases and the rehabilitation of hypoxia.
Ø Through oxygen inhalation, the oxygen supply to the body can be improved, and the
purpose of oxygen supplement and health care can be achieved. It is suitable for
middle-aged and elderly people, people with poor physique, pregnant women, college
entrance examination students and other people suffering physiological hypoxia to
different degrees. It can also eliminate fatigue and restore body function after heavy
physical or mental consumption.
Ø It is not applicable to infants.
3.3 Contraindications
It shall not be used as the oxygen for life support and life extension. Patients with severe
carbon monoxide poisoning are not allowed to use it.
3.4 Equipment Type
Non-AP/APG equipment (that cannot be used with flammable anesthetic gas mixed with air
or flammable anesthetic gas mixed with oxygen or nitrous oxide).
3.5 Product composition
The medical molecular-sieve oxygen generator is composed of a main body, a
humidification bottle, a disposable oxygen inhalation tube, a disposable atomizer (optional),
a remote control (optional), etc.
3.5.1 Component diagram
Operation
panel
Atomization
nozzle
Oxygen outlet
Humidification
bottle
Front cover
Front housing
Rear housing
Base
Decorative
ring
Handle
Filter cover
Power socket
Power switch
Safety tube
base

3.5.2 Operating the display screen
3.5 Function description
ØOxygen flux display: in L/min;
ØOxygen concentration display: in %(V/V);
ØOxygen generation icon: when the icon is on, display the oxygen generation status;
ØTiming display: display the current use time and set the single use time;
ØAccumulated timing function: display the accumulated running time of the oxygen generator;
ØAlarm function: including power-off, oxygen concentration detection function, corresponding
indicator flashing or warning voice sounding for reminder in case of a fault;
ØMute icon: when the icon is on, the key tone will be enabled; otherwise, the key tone
will be disabled;
ØAtomization function: compressed air atomization (optional);
ØRemote control function (optional).
Product Model ZY-F1WA2 ZY-F2WA2
Rated flux 1L/min 2L/min
Input power 130VA 180VA
Net weight 6.5kg 8.0kg
Noise =45db =50db
Oxygen concentration ≥90%(about 30min later after startup)
Flow adjustment range 1～6L/min
Atomization rate =0.2mL/min
Exterior dimensions Ф278x398mm
Outlet pressure 30～60KPa
When the nominal outlet pressure is 7kpa, the flux level will be 1~6L/min;
When the maximum flux is recommended, by applying 7 kPa of back pressure, the flux will change
by 0.5 L / min;
OXYGEN FLOW CONCENTRATION
L/min
%
TIME Min
H
TOTAL TIME
OXYGEN
FAULTMUTE
MUTE TIMING TIMINGON/OFF FLOW
Oxygen Flow
Oxygen
generating icon
Timing display
Sound icon
Accumulated
timing
Timing +
Sound button
Oxygen
concentration
Infrared receiver
Fault icon
On-Off button
Flow button
Timing -
3.6 Technical specifications
3.7 Working environment
ØAmbient temperature range: 5°C~40°C;
Ø Relative humidity range: ≤80%;
Ø Atmospheric pressure range: 86kPa -106kPa;
3
Ø Impurities in feed air: ≤3mg/m
3.8 Storage and transportation environment
Ø Ambient temperature range: -20°C~+55°C;
Ø Relative humidity range: ≤95%;
Ø Atmospheric pressure range: 70kPa -106kPa;
Ø When the storage and transportation temperature is lower than 5 °C, the equipment
shall be kept in the normal working temperature environment for more than 4h before
use.
ØThe oxygen generator shall be stored in a well-ventilated room without strong sunlight
or corrosive gas. During transportation, it shall be prevented from strenuous vibration
and lying upside down or horizontally.

5.1. Operation Inspection
Before using the product, the user shall first check whether the overall appearance of the
product is in good condition, and whether or not the variety and quantity of the product
accessories in the package are consistent with the items listed in the packing list. In case of
any missing or damage, please contact the dealer or manufacturer in time
5.2 Instructions for Use
Ø Press the power switch to "I," The display screen will be closed after full display and
only the button indicators will be on, indicating that the equipment function is normal and
the whole equipment is in standby mode.
Ø In standby mode, touch the switch button, then the oxygen generator starts to work; The
display screen shows the oxygen flux , oxygen concentration and accumulated time,
other icons are off and the oxygen generator is in normal operation. At this time, the
timing time is displayed as "000" min, which means that the timing shutdown function is
not set and it is in continuous operation mode. The display screen shows positive timing
until the switch is pressed to shut down.
Ø Touch the flux button to display the current oxygen flux on the screen. Circularly
controlled adjustable flux: 1-6L/min;
Ø Touch the MUTE button. After the icon is on, the key tone function will be enabled
otherwise the key tone function will be disabled.
Ø Connect one end of the oxygen inhalation tube to the humidification bottle, and the other
end (oxygen inhalation end or nasal inhalation end) to the patient, then the patient starts
to inhale oxygen.
Warning:
Ø Please follow the doctor's advice to adjust the oxygen inhalation time and oxygen flux.
Ø When the oxygen generator is working, the sound of "puff" will be emitted every few
seconds, which is the normal reversing exhaust sound.
Ø At the beginning of startup, the oxygen concentration will increase continuously and
reach a stable value within 30 minutes.
5.3 Atomization operation (optional)
4. Product Installation
4.1 Unpacking
Ø Check cartons or other packages for obvious damage. In case of any damage, please
inform the shipping supplier or local dealer in time.
Ø Take out all the packages in bulk in the cartons.
ØRemove all the components from the cartons carefully.
Note: unless the oxygen generator is used immediately, the cartons and packing
materials must be kept before use.
4.2 Check
Ø Check the outer surface of the oxygen generator for defects, depression, scratches
and other damage.
Ø Check all components.
4.3 Installation
Ø Tips: Please cut off the white tie at the bottom of the body and pull it out before use.
Ø Water filling and installation of humidification bottle: press "PUSH" lightly to open the
front cover;
Ø Take out the humidification bottle horizontally with force (please fix the oxygen
generator when taking out to avoid dragging when taking out the humidification bottle);
Ø Open the rubber plug above the humidification bottle and add a proper amount of
purified water (or distilled water) according to the scale line;
Ø Cover the rubber plug tightly on the humidification bottle, then put the humidification
bottle back into the oxygen generator and cover the front cover.
Ø Plug the machine in, first make sure that the power switch of the oxygen generator is
off, and then connect the power cord plug to the socket of the oxygen generator, and
the plug is connected to the socket with power output.
Maximum water level line
5. Operation Instructions
Cup body
Inner core
Handle
Connecting tube
Mouth piece
Cup cap

Ø Add an appropriate amount of medical solution to the atomization cup (please
follow the doctor's advice), and make sure that the maximum scale line of the
atomization cup is not exceeded.
Ø Before startup, screw off the atomization plug of the atomization nozzle.
Ø Connect both ends of the air guide tube to the atomization cup and the atomization
nozzle of the main body respectively. After startup, atomization treatment can be started
(please follow the doctor's advice for atomization time).
Ø After the atomization of the medical solution, turn off the oxygen concentrator, pull off the
air guide tube at the atomization nozzle, and turn the atomization plug back to the
atomization nozzle (tighten)
If the atomization function is used during operation of the oxygen concentrator, it is
suggested to adjust the flux to 3L/min, and then connect the atomization cup.
5.4 Timing setting
The equipment has timing function. If the user needs it, touch the timing + and timing -
buttons on the display panel to set the range within 0-240min.
Ø Timing: The figure shows the time set by the current user when using; increase (timing +)
or decrease (timing -) every 30min, with a 0-240min cycle.
Ø When the timing is in working state, the time will be displayed by countdown and
refreshed once every minute.
Ø When the remaining time is within 3min, and the buzzer will warn once every minute.
After the end of the timing, the concentrator will automatically shut down.
5.5 Warning signal
Ø Power-off warning: when the system is powered off, the fault icon will flash with a
warning sound.
5.6 Remote control function (optional)
Ø Remote control distance: no more than 3m.
Ø Remote control function: the key function of the remote control corresponds to the key
function of the oxygen concentrator's operation panel.
Ø If not used for a long time, take out the battery to avoid damaging the remote control.
5.7 Shutdown
Ø Because of good sealing and connection, after use, one hand shall press the front cover,
and the other hand shall pull out the oxygen inhalation tube or connecting tube from the
oxygen outlet of the humidification bottle.
Ø Press the power switch to "O" position to turn off the oxygen concentrator.
ØThen remove the power plug and cut off the power
Symbol Meaning
~AC
Attention! Refer to the attached documents
OPower-off (power switch)
IPower-on (power switch)
Limit of stacking layer number
Keep away from rain
Fragile
Up
5.8 Safety requirement symbols and their meanings

6. Care and Maintenance
Warning:
Ø Before maintaining the oxygen concentrator, cut off the power first. To avoid electric
shock, do not disassemble the housing.
Ø For the maintenance of the pressure atomizer, please refer to the Operation Manuals
on the packages respectively.
6.1 Cleaning the housing
It is recommended to clean the outside of the housing before each use and wipe it at least
once a month. First, cut off the power and wipe it with a clean soft cotton cloth or sponge.
No liquid is allowed to penetrate into the gap of the enclosure.
6.2 Cleaning the humidification bottle
Ø The water in the humidification bottle shall be changed before each use.
Ø The humidification bottle shall be cleaned once a week the cleaning method as below:
first mix with a little detergent and water and then wash with clean water, to ensure the
hygiene of oxygen.
6.3 Cleaning the multi-layer filter cotton
Ø According to the use environment and frequency, the cleaning cycle is 15 days or 30
days, at least once a month.
Ø Remove the filter cover, take out the old filter cotton and replace it with the spare filter
cotton.
Ø Wash the filter cotton with clean water and dry it
thoroughly for future use.
Warning: it is strictly forbidden to use filter
cotton which is not completely dry.
6.4 Replacement of the nasal oxygen tube
Ø The matching nasal oxygen tube is a disposable
sterile product.
Ø Do not reuse or cross-use it.
6.5 Replacement of the atomization cup
Ø The matching atomization cup is a disposable
sterile product. Do not reuse or cross-use it.
Accessories
Humidification
bottle
Atomizer
Oxygen
inhalation tube
Replacement
instructions
No need to replace,
clean regularly
Disposable
Disposable
Requirements
If damaged or lost, buy our company specialized
humidification bottle
Buy the products that have obtained the
registration certificate of medical devices
Buy the products that have obtained the
registration certificate of medical devices
Note: the accessories recommended by the manufacturer shall be used, otherwise
the product performance may be affected
7. Troubleshooting
NO.
Phenomena
Causes
Solutions
1
Turn on the power switch,
then the oxygen concentrator
gives out a warning sound,
the red indicator flashes, the
machine does not run, and
the display screen is on
1)The power cord plug is not properly
inserted
1)Check whether the power plug
is properly inserted
2)The socket has no power output
2) Check whether or not the
indoor power supplies power
3)The power outlet of the socket has
no enough power
3) No extension is allowed. Move
the oxygen concentrator to a
power outlet or circuit with
sufficient power
4) The safety tube is melted down
4) Replace the safety tube
First, cut off the power supply,
which will be carried out by
professional maintenance
personnel
5) If the oxygen concentrator still does not work, please contact the
dealer or the manufacturer.
2
After startup, the running
sound is normal and the size
of the flowmeter is normally
adjustable, but there is little or
no oxygen output
1) The humidification bottle and the
rubber plug are not sealed, and there
is air leakage
1) Reinstall and tightly fit the
rubber plug
2) The tubes of the output port of the
humidification bottle and the input
port of oxygen inhalation tube are not
connected in place, causing air
leakage
2) Insert the tube of the outlet port of
the humidification bottle tightly again
3) The oxygen inhalation tube is
defective
3) Replace the oxygen inhalation
tube
4)If the phenomenon persists, please contact the dealer or the
manufacturer
3
Remote control is not
operable
1) Not within the control range of
remote control receiving window
1) Operate within the receiving
window
2) The battery is low or out of power
2) Replace the battery
4
After the oxygen concentrator
works, the sound is abnormal
Failure of the oxygen concentrator
Stop using the equipment
immediately and contact the
dealer or the manufacturer

ZY-F1WA2:
1L/min: Oxygen concentration 93%±3%;
2L/min: Oxygen concentration 72%±3%;
3L/min: Oxygen concentration 65%±3%;
4L/min: Oxygen concentration 55%±3%;
5L/min: Oxygen concentration 45%±3%;
6L/min: Oxygen concentration 40%±3%;
ZY-F2WA2:
1L/min: Oxygen concentration 93%±3%
2L/min: Oxygen concentration 93%±3%;
3L/min: Oxygen concentration 72%±3%;
4L/min: Oxygen concentration 65%±3%;
5L/min: Oxygen concentration 55%±3%;
6L/min: Oxygen concentration 45%±3%;
8.1 Factors affecting oxygen concentration
Altitude: when the sea level reaches 1828m, the oxygen concentration will not decrease
and the efficiency is less than 90% when the sea level is from 1828m to 4000m
When the nominal outlet pressure is 0, the change of oxygen concentration and oxygen
flux is as follows:
8.2 Operating diagram of the oxygen concentrator:
8. Technical diagram
Oxygen outlet
Humidification
bottle
Nitrogen
emission
Molecular-sieve
drum
Directional
valve
Oxygen concentration sensor
Nitrogen
gas
Oxygen
gas
Flow valve
Air Air filter cotton Compressor
Exchange valve
Oxygen-nitrogen separation
Air inlet silencing
8.3 Circuit connection diagram:
Compressor Directional valve
Display circuit board
Fan
Main control board
Fuse
8.4 Equipment insulation diagram
AP(BF type)
~220V

9. Packing List
Component name
oxygen concentrator main body ZY- F1WA2/ZY- F2
WA2
Remote control (optional)
Disposable oxygen inhalation tube
Disposable atomizer (optional)
Multi-layer filter cotton
Power cord
Safety tube 5*20 (F2.0AL250V)
Operation Manual (including warranty card)
Certificate of Conformity
Number
1 set
1 pc
1 unit
1 unit
1 pc
1 pc
2 pcs
1
1
The circuit and appearance of the equipment are subject to change for improvement
without prior notice
Product recovery
ØIf the product in this instruction manual is discarded in unsuitable places, the components
may cause certain harm to the environment.
ØThe treatment of waste and residue shall conform to relevant national regulations.

Warning information
Ø Active medical devices are subject to special EMC precautions and must therefore be
installed and used in accordance with these guidelines.
ØThe medical molecular-sieve oxygen concentrator needs to be installed and used
according to the EMC information provided in the attached documents.
ØExcept the transducers and cables sold by the manufacturer of this medical molecular-
sieve oxygen concentrator as spare parts of internal components, the use of
accessories, transducers and cables other than those specified by the regulations may
lead to the increase of equipment or system emission or the decrease of immunity,
including but not limited to power cords.
ØThis equipment or system shall not be used close to or together with other devices.
Otherwise, observe and verify whether it can operate normally in its used configuration.
ØPortable and mobile communication RF device may affect the use of medical electrical
equipment
After-sales service
1. From the date of purchase, the product can enjoy one year's free warranty service and
its compressor can enjoy three years' free warranty service with the purchase invoice.
2. We will not provide free warranty service for faults caused by the following personal
reasons of users.
Ø Vulnerable and consumable parts: oxygen inhalation tube, filter cotton, safety tube;
Ø Faults caused by unauthorized disassembly or modification of the product;
Ø The equipment cannot work normally because of water, medicine and other liquids
entering into it caused by users.
Ø Faults caused by accidental fall during use and handling;
Ø Damages caused by unforeseen natural disasters (such as fire, earthquake, flood, etc.);
Ø Faults caused by failure to operate the product in accordance with the correct
instructions in the manual or improper repairs of repair shops not authorized by the
dealer, etc.
Ø Faults caused by improper repairs of repair shops not authorized by the dealer, etc.
3. Repair services outside the warranty scope will be charged according to regulations
(door-to-door service fee, parts replacement costs, etc.).
4. When asking for warranty service, please call the customer service hotline.
5. During warranty service, if necessary, users may ask our qualified technicians to provide
product circuit diagram and repairable component information.