CARER Medical Technology CR-F5 User manual

Medical Oxygen
Concentrator
User’s Manual
CR-F5, CR-F5W, CR-F5SW
WARNING-Please read this User’s Manual carefully and understand it before using the
medical oxygen concentrator.
DANGER-Fire is strictly prohibited.

1
CONTENTS
⚫Important Safety Information ................................................................................................................ 2
⚫Symbols and Definitions........................................................................................................................ 2
⚫Overview................................................................................................................................................ 3
⚫Reason for a Physician to Choose Oxygen Therapy.............................................................................. 3
⚫Scope of Application.............................................................................................................................. 3
⚫Principle for Oxygen Concentrating ...................................................................................................... 3
⚫Contraindications, Precautions, Warnings, and Instructions.................................................................. 3
⚫Main Structure ....................................................................................................................................... 4
⚫Specifications/Models............................................................................................................................ 4
⚫Important Spare Parts of Oxygen Concentrator..................................................................................... 4
⚫Installation of Oxygen Concentrator...................................................................................................... 5
⚫Preparation before Operating the Oxygen Concentrator ....................................................................... 6
⚫Operation Instructions............................................................................................................................ 7
⚫Alarm ................................................................................................................................................... 10
⚫Repairing and Maintenance of Oxygen Concentrator ..........................................................................11
⚫Identifying and Removing Failures ..................................................................................................... 13
⚫Specifications and Parameters ............................................................................................................. 14
⚫After-sales Services ............................................................................................................................. 15
⚫Environmental Protection .................................................................................................................... 15
⚫Graph of Oxygen Concentration Value and Flow Function................................................................. 16
⚫Change of Oxygen Concentration with Flow under Different Pressure Conditions in the Altitude Range
of 0-4000m.................................................................................................................................................. 16
⚫Electromagnetic Compatibility (EMC)................................................................................................ 17
⚫Supplementary Instruction ................................................................................................................... 20
⚫Storage and Transportation Conditions................................................................................................ 21
⚫Service Life.......................................................................................................................................... 21
⚫Packing List ......................................................................................................................................... 21

2
⚫Important Safety Information
Please read this User’s Manual before using the medical oxygen concentrator (oxygen concentrator).
In order to prevent power outages or possible malfunctions of the oxygen concentrator, those who
are in urgent need of oxygen and critically ill patients must be provided with other backup oxygen
sources.
This oxygen concentrator is not intended to sustain or prolong life.
The important information in this description is highlighted using the following terms:
DANGER: Emergency safety information, and may cause injury or death if ignored.
WARNING: Important safety information, and may cause serious injury if ignored.
CAUTION: Information aimed to prevent damage to the product.
NOTE: Information you must pay special attention to.
NOTE: Important safety information is indicated in this manual. Please pay special attention to all
safety information.
DANGER-Fire is strictly prohibited.
NOTE: Please keep this Manual properly.
WARNING: In some cases, oxygen therapy can be dangerous. Consult your physician before using
an oxygen concentrator.
⚫Symbols and Definitions
Symbol
Definitions
Symbol
Definitions
Note! Check the
accompanying document.
Class II equipment
AC
Type B equipment
Fire is strictly prohibited.
Up
No rain
Fragile
┃
On
○
Off

3
⚫Overview
This Manual helps you to get familiar with how to use the oxygen concentrator. Please make sure that you
have read and understood this User’s Manual before using the oxygen concentrator. Important safety and
maintenance information is indicated in the instructions. Please pay special attention to all safety information.
If your oxygen concentrator is in fault, please contact a dealer authorized by CARER.
Danger: Oxygen can aid combustion.Do not smoke when the oxygen concentrator is turned on or
near someone who is working on it.
Do not use if there is any object with high temperature, sparks and open flames within 1.6 m.
⚫Reason for a Physician to Choose Oxygen Therapy
Nowadays, many people suffer from heart, lung and other respiratory diseases. To sustain certain organs
moving, your body needs a steady supply of oxygen. Your physician may ask you to supplement oxygen
because you cannot get enough oxygen from the indoor air. Supplementing oxygen can increase the total
amount of intaking oxygen in your body.
⚫Scope of Application
It is designed for oxygen therapy and nebulizing for patients with hypoxia at medical institutions and families.
⚫Principle for Oxygen Concentrating
This machine is driven by ~220 V power. By using air as the raw material and a high-quality molecular sieve, it produces
high-purity oxygen conforming to medical oxygen standard by pressure swing adsorption (PSA method) at normal
temperatures.
⚫Contraindications, Precautions, Warnings, and Instructions
Contraindications
➢This oxygen concentrator is not intended to sustain or prolong life.
WARNING
➢Do not unplug the oxygen concentrator when the power switch is not turned off.
➢Do not use the oxygen concentrator while bathing.
➢Do not place or store the oxygen concentrator next to a bathtub or sink.

4
➢Do not touch the oxygen concentrator after it falls into water or liquid, and immediately unplug the power. Do
not use the oxygen concentrator again after it falls into water or liquid, and notify a dealer authorized by CARER.
➢Do not place or store the oxygen concentrator in a kitchen or bathroom.
➢The oxygen concentrator should be placed away from pollution and smoke.
➢The air inlet of the oxygen concentrator should be located in a well-ventilated place.
➢It takes 5 minutes for the oxygen concentrator to start to reach the specified performance.
➢The oxygen concentrator should not be lubricated with oil, grease or other lubricants.
➢The performance of oxygen concentrator may be affected if any non-specified wetting bottles or drug
administration accessories are used.
NOTES:
➢It is recommended to assign a person to maintain the oxygen concentrator when using it.
➢Do not block the air inlet and outlet of the oxygen concentrator.
➢Do not disassemble the oxygen concentrator to prevent electric shock. If the oxygen concentrator is in fault, please
contact a dealer authorized by CARER timely.
➢When the oxygen concentrator is not in use, please unplug the oxygen concentrator from the power socket.
⚫Main Structure
The medical oxygen concentrator is composed of a mainframe, a flow controller, a humidification bottle and an oxygen
concentration status indicator.
⚫Specifications/Models
See the details in the Specification/Parameter Table
⚫Important Spare Parts of Oxygen Concentrator
NOTE: Please get familiar with the oxygen concentrator before using it.
1
Power switch
2
Oxygen outlet
3
Nebulizing port
4
Humidification
bottle
5
Air filter cotton
cover
6
Power cord
7
Overload protector
8
Caster
9
Power indicator
light
10
Normal working
indicator
11
Low oxygen
concentration
indicator
12
Maintenance
indicator
13
Infrared receiving
port
14
Timing +
15
Timing -
16
On/off switch
(Run switch)
17
Nebulizing/oxygen
concentrating
switching button
18
Flow -
19
Flow +
20
LCD

5
Fig. 1
Fig. 2
⚫Installation of Oxygen Concentrator
1. Place the oxygen concentrator in the place where you stay for the longest time and near the socket. It can
be the living room, studyroom, bedroom, etc. But please do not place or store it in the kitchen or bathroom.
DANGER: Do not place the oxygen concentrator at a place if there are objects with high
temperature, sparks and open flames within 1.6 m.
NOTE: Do not connect it to a wall outlet controlled by a switch.Do not have other appliances
plugged into the same wall outlet.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
20
19
18

6
2. Place the oxygen concentrator at least 50 cm away from the wall, fabric or other objects. This will ensure
that a proper flow of air enters and exits the oxygen concentrator. The oxygen concentrator should be
kept away from pollutants, smoke, and humidity.
3. It is recommended to use a nasal oxygen tube longer than 2 meters.
⚫Preparation before Operating the Oxygen Concentrator
1. Please check whether the air filter cotton (in the air filter cover of the oxygen concentrator) is clean before
using the oxygen concentrator every time. Please clean the air filter cotton every week when the oxygen
concentrator runs. It is recommended to shorten the cleaning time appropriately if the environment is
poor or there is too much dust-haze. How to properly clean the air filter cotton is discussed on Page 12
of this Manual.
2. Please install the oxygen concentrator accessories following the steps below.
1). Connection of humidification bottles:
Install the oxygen humidification bottle as follows:
a) Add purified water (or distilled water) to the upper and lower limits of the humidification bottle (Fig.
3), and tighten the bottle cap.
b) Put the humidifier on the humidifier connection base of this product (Fig. 4). Please make sure that
it is firmly installed.
Fig. 3 Fig. 4
NOTE: The amount of water added to the humidification bottle should be between the maximum
and minimum water level marks.
Note: If you need to replace the humidification bottle, please contact a distributor authorized by
CARER to replace it with a SHP-01 humidification bottle.
2). Nasal oxygen tube connection:
Connect the nasal oxygen tube to the oxygen outlet (Fig. 5).

7
Fig. 5
Note: 5-7 mm tubaeform interface is adopted for the nasal oxygen tube and nebulizing device.
It is recommended to use a nasal oxygen tube and nebulizing device with a medical device
registration certificate.
3. Take out the power cord completely from the strap, make sure that the "power switch" is off (Fig. 6), and
then insert the plug into the wall outlet (Fig. 7).
Fig. 6 Fig. 7
WARNING: Improper power cords and plugs may cause burns, fire, or other electric shock hazards.
Do not use an oxygen concentrator with a damaged power cord.
⚫Operation Instructions
Danger: Oxygen can aid combustion.Do not smoke when the oxygen concentrator is turned on or
near someone who is working on it.
Do not use the oxygen concentrator if there is any object with high temperature, sparks and open
flames within 1.6 m.
1. Turn the "power switch" to the On (┃) position (Fig. 8), and then the power indicator will light up; after
pressing the "On / Off" button on the panel (Fig. 9) once more, the oxygen concentrator will start and the
normal operation indicator will light up.

8
Fig. 8 Fig. 9
If the oxygen concentrator does not operate normally, please refer to “Identifying and Removing
Failures” on Page 13 of this Manual. If necessary, please contact a dealer authorized by CARER.
2. Check the displayed flow (Fig. 10). If it is not the desired flow, press the flow + or - keys to get the required
oxygen flow.
Fig. 10
NOTE: Please adjust the oxygen flow following the doctor's advice.
3. In order to ensure the oxygen concentration and oxygen flow, this oxygen concentrator will undergo
quality inspection before delivery. As long as the cumulative time displayed (Fig. 11) is less than 10 hours,
it is a normal new machine.
Fig. 11
4. When the machine is in the running or standby state, press the “Timing +” or “Timing -” button on the
panel (Fig. 12) to make the machine in timing status (Fig. 13). Each time you press the “Timing +”
button, the timing time increases by 5 minutes; each time you press the "timing-" button, the timing
time reduces by 5 minutes. The maximum set time is 240 minutes. After the set time is over, the
Timing
Timing
On/Off
Timing
Timing
On/Off
Oxygen
flow
Oxygen
concentrati
on
Timing
Time
H
Min.
Oxygen
concentrating
Nebulizing
Total
time
Oxygen
flow
Timing
Time
Total
time
Oxygen
concentrati
on
H
Min.
Oxygen
concentrating
Nebulizing

9
machine enters the standby state. Press "On / Off" on the panel to restart it.
Fig. 12 Fig. 13
NOTE: If no operation is performed for more than 10 minutes, the screen backlight will automatically go out. Touch
any button once more to light up the screen backlight.
5. When the machine is running, press the "On / Off" button on the panel (Fig. 14). After that, the whole
machine will enter the standby state and the display screen will be off.
Fig. 14
6. When the oxygen concentrator is not in use, please turn off the “power switch” (The power switch is in
○ state) (Fig. 15) and unplug the power from the socket.
Fig. 15
Oxygen
flow
Oxygen
concentrati
on
Timing
Time
Total
time
Oxygen
concentrating
Nebulizing
Min
.
H
Timing
Timing
On/Off
Timing
Timing
On/Off
Timing
Timing

10
⚫Alarm
WARNING: When the oxygen concentration status indicator indicates an abnormal oxygen
concentration, please contact a dealer authorized by CARER.
1. Alarm classification:
The oxygen concentrator is designed with audible and visual alarm functions, which can alert you to
situations that require your attention.
1). There are two levels of alarms: high-level and medium-level.
High-level alarms indicate the most dangerous conditions for critically ill patients and are the most
serious warnings.
Medium-level alarms are serious warnings.
The alarm characteristics are shown in Table 1 below.
2). Priority level of alarms: high-level alarm> medium-level alarm, that is, when two
levels of alarms exist at the same time, the alarm signal is the sound of high-level alarm.
2. Audible alarm indication:
When an alarm is detected, the oxygen concentrator will make a “drip” alarm sound (The sound pressure
range is 60dB (A) ～ 120dB (A)). Different levels of audible alarms are of different sound frequencies.
1). High-level alarm: Pause after the "Drip-Drip-Drip ------ Drip-Drip” sound. It will sound 5 seconds
later.
2). Medium-level alarm: Pause after the "Drip-Drip-Drip” sound. It will sound 10 seconds later.
3). Priority level of alarms: high-level alarm> medium-level alarm, that is, when two levels of alarms
exist at the same time, the alarm signal is a high-level alarm indicator.
3. Visual alarm indication:
When an alarm event occurs, the alarm indicator will light up.
Table 1 Alarm characteristics
Alarm classification
Indicator light color
Flashing frequency
Duty ratio
High-level alarm
Red
1.4Hz～2.8Hz
20%～60%
Medium-level alarm
Yellow
0.4Hz～0.8Hz
20%～60%
Priority level of alarms: high-level alarm> medium-level alarm, that is, when two levels of alarms exist
at the same time, the alarm signal is a high-level alarm indicator.
4. Measures to be taken when an alarm occurs:
1).Identify the status represented by the alarming signal
2). Exam the patient's condition
3). Identify the cause of the alarm
4). Take corresponding measures

11
5. Definition of alarm:
No.
Alarm
Level
Audible alarm
Visual
alarm
Alarm status
Rem
ark
E1
The oxygen concentration
is lower than 73% five
minutes after the oxygen
concentrator is turned on.
High-level
Pause after the "Drip-Drip-
Drip ------ Drip-Drip” sound.
It will sound 5 seconds later.
Red light
Technical
alarm status
E2
The oxygen concentration
is higher than 73% but
lower than 82% five
minutes after the oxygen
concentrator is turned on.
Medium-
level
Pause after the "Drip-Drip-
Drip ------ Drip-Drip” sound.
It will sound 10 seconds
later.
Yellow
light
Technical
alarm status
E3
The system pressure is
greater than 250 KPa.
Medium-
level
Pause after the "Drip-Drip-
Drip ------ Drip-Drip” sound.
It will sound 10 seconds
later.
Yellow
light
Technical
alarm status
E4
The system pressure is
lower than 40 KPa.
Medium-
level
Pause after the "Drip-Drip-
Drip ------ Drip-Drip” sound.
It will sound 10 seconds
later.
Yellow
light
Technical
alarm status
E5
Oxygen sensor and
control board
communication failure
High-level
Pause after the "Drip-Drip-
Drip ------ Drip-Drip” sound.
It will sound 5 seconds later.
Red light
Technical
alarm status
E6
The oxygen flow rate is
lower than 0.5L/min
during oxygen generation
Medium-
level
Pause after the "Drip-Drip-
Drip ------ Drip-Drip” sound.
It will sound 10 seconds
later.
Yellow
light
Technical
alarm status
E7
Flow meter cannot be
adjusted to the right
position.
Medium-
level
Pause after the "Drip-Drip-
Drip ------ Drip-Drip” sound.
It will sound 10 seconds
later.
Yellow
light
Technical
alarm status
When the machine is
running, the power is off
High-level
Pause after the "Drip-Drip-
Drip ------ Drip-Drip” sound.
It will sound 5 seconds later.
Red light
Technical
alarm status
WARNING: Please do not change the alarm preset of the oxygen concentrator; do not change the
memory contents of the oxygen concentrator MCU.
⚫Repairing and Maintenance of Oxygen Concentrator
WARNING: Please cut off the power of oxygen concentrator before cleaning.
1. Cleaning of oxygen humidification bottle
Please clean the humidification bottle every day.
Cleaning steps: Clean it with cold boiled water and then dry with a towel.

12
2. Catheters, masks and nasal tubes:
Our company does not provide catheters, masks and nasal tubes. It is recommended to use catheters, masks
and nasal tubes with a medical device registration certificate. Catheters, masks, and nasal tubes are disposable.
Please replace them regularly. The cleaning, disinfection and sterilization methods are shown on the packaging
or User’s Manual.
3. Air filter cotton:
Clean the air filter cotton once per every week. Clean following the steps below:
1). Remove the air filter cotton (Fig. 16)
2). Rinse thoroughly with cold boiled water and dry naturally. Filter cotton must be fully dried before the
next use.
Caution: To prevent damage to the oxygen concentrator, do not attempt to operate the oxygen concentrator
when there is no air filter or when the filter is dry.
4. Air intake filter:
The air intake filter needs to be replaced every 1000 hours of operation. If the environment is harsh and there
are many hazes, it is recommended to shorten the replacement time appropriately. If you need to replace the
new air intake filter, please purchase from a dealer authorized by CARER. Please follow the steps below:
1). Remove the used air intake filter (Fig. 16).
2). Install the new air intake filter and cover up the air filter cotton.
Fig. 16
5. Housing:
The housing is to be cleaned at least once a month. Please cut off the power before cleaning. Wipe with
a clean, soft, damp cotton cloth or sponge. Do not allow liquid to penetrate the gaps in the case.
WARNING: To avoid electric shock, do not open the housing.The housing can only be opened by a
service engineer authorized by CARER.
6. An oxygen output alarm device is designed in the oxygen concentrator. When the oxygen concentrator is
turned on, the four indicators (power, normal, low concentration and maintenance) on the panel will
temporarily light up. After a few seconds, only the power indicator and normal indicator will continue to
work.
Air filter cotton
Air filter cotton cover
Air intake filter

13
7. The description of panel light is as follows:
1). Power indicator (green)-When it is on, it indicates that the equipment starts running;
2). Normal operation indicator (green)-When it is on, it indicates that the equipment is running normally;
3). Low concentration indicator (yellow)-When it is on, it indicates that the oxygen output concentration
of your equipment is low, or the oxygen system pressure is abnormal;
4). Service indicator (red)-When it is on, it indicates that your equipment needs maintenance service.
Please contact a dealer authorized by CARER.
If the oxygen concentration is lower than the acceptable level, the green normal operation indicator will
turn off and the yellow abnormal indicator will turn on. At this time, please switch to your backup oxygen
source. Please refer to “Identifying and Removing Failures” on Page 13 of this Manual. If necessary, please
contact a dealer authorized by CARER.
Note: The oxygen generator does not need lubrication. Please do not apply any lubricant on the
product.
⚫Identifying and Removing Failures
The following "Checklist of Identifying and Removing Failures" will help you to conduct analysis. If the
suggested steps do not help troubleshooting, please switch to the backup oxygen source and contact a dealer
authorized by CARER.
Checklist of Identifying and Removing Failures
Failure performance
Possible cause
Troubleshooting
A. When the "power switch"
is turned on and the "on /
off" button is pressed, the
oxygen concentrator does
not run, the power
indicator light is not on, the
alarm sounds and the
maintenance light flashes.
1. The power cord is
not plugged into a
power socket properly.
Check the connection between the power cord and power
socket. The power system should be consistent with the
specification indicated on the nameplate.
2. The power socket is
not powered.
Check the circuit breaker at home and restart if necessary. If
the same problem reoccurs, use another socket.
If it still does not work after the above steps, please contact
your dealer.
3. The "overload
protector" of the
oxygen concentrator is
disconnected.
3. Press the "overload protector" of the oxygen concentrator.
The "overload protector" is next to the power cord. If the
same problem reoccurs, use another socket. If it still does
not work after the above steps, please contact your dealer.
B. When the switch is turned
on, the oxygen
concentrator will run, the
power indicator will be on,
the red maintenance
indicator will be on and the
alarm sound may be heard.
1. The air filter cotton
is blocked.
Check the air filter cotton. If it is dirty, clean it according to
the instructions on Page 12.
2. The exhausting
device is blocked.
Check the exhaust port and make sure that nothing is
blocked at the exhaust port of the oxygen concentrator.
3. The air intake filter
is blocked.
Check the air inlet filter. If it is dirty, replace it according to
the instructions on Page 12.
4. The nasal oxygen
tube or mask is
blocked.
Disconnect the nasal oxygen tube from the oxygen outlet. If
the flow increases, check whether the nasal oxygen tube is
blocked. Please replace the nasal oxygen tube or mask if
necessary.

14
C. When the switch is turned
on, the oxygen
concentrator will run, the
power indicator light will
be on and the low-
frequency vibration sounds
can be heard.
The solenoid valve
doesn't work normally.
Immediately switch off the oxygen concentrator, switch to
the backup oxygen source, and contact your dealer.
If it still does not work after the above steps, please contact a dealer authorized by CARER.
If the fuse is damaged, please contact a professional technician to disassemble the case back cover and replace
the fuse.
Our company will provide the circuit diagram, component list, diagram notes, etc. to the qualified technical
personnel of the user as requested.
If the alarm system does not work, please contact a dealer authorized by CARER.
⚫Specifications and Parameters
1. Basic parameters
2. Normal operating conditions:
1). Ambient temperature: 5℃~40℃;
2). Relative humidity: ≤80%
3). Atmospheric pressure range: 86kPa ~ 106kPa.
4). Power supply: AC220V±22V,50Hz±1Hz
3. The noise of medical oxygen concentrator should be ≤60dB (A) during normal operation.
4. The solenoid valve and each indicator light should work normally five minutes after the medical oxygen
concentrator is turned on. Oxygen should be output and alarm function should be available in case of
failure.
1). When the output oxygen concentration is lower than 82% (volume fraction), there should be an
audible and visual alarm.
2). When the compressor, solenoid valve or pipeline breaks down in the system, it shall make an audible
Model
Maximum
recommen
ded flow
(L/min)
Oxygen
concentrati
on (V/V)
Maximu
m outlet
pressure
(kpa)
Nebulizing
rate
(ml/min)
Nebul
izing
functi
on
Oxygen
concentrati
on display
function
Overall
dimensions
(L*W*H) cm
Power
(VA)
CR-F5
5
93%±3%
20
—
—
—
36*25*63
450
CR-F5W
5
93%±3%
20
≥0.15
Avail
able
—
38*25*63
450
CR-F5SW
5
93%±3%
20
≥0.15
Avail
able
Available
36*25*63
450

15
and visual alarm.
3). When the network power is interrupted and the equipment cannot work normally, it shall make a
red light alarm.
5. Temperature rise of medical oxygen concentrator: Under normal working conditions, the maximum
temperature of the plastic housing is ≤60℃, and the gas temperature at the oxygen outlet of the
oxygen concentrator is ≤46℃.
6. Oxygen should be free of odor.
⚫After-sales Services
1. Scope of warranty:
The following consumables: The air intake filter, air filter cotton, humidification bottle, accompanying
materials and other consumables are not covered by the warranty.
2. Non-warranty coverage:
1). Damage to the product caused by incorrect use;
2). Damage caused by unauthorized removal or modification of any part of this product;
3). Fail to use the product in accordance with the precautions in the Manual;
4). Damage to the product caused by abnormal voltage or accidents (such as fire, flood, etc.) caused by any
other force majeure factors;
5). No warranty certificate or altered warranty certificate;
6). The product has expired the warranty period.
3. Warranty time: The warranty period of the whole machine is one year from the purchasing date. The service
is to be charged if the damage is caused by failure of following the normal operation or exceeding the
warranty period. If any maintenance or repair is required, please contact the dealer of the purchased
product. Please present the warranty certificate when repairing. If a charge is required, the service staff
will explain the composition of the charge and carry out charged repair upon your consent.
4. In order to avoid accidental loss, please repair the oxygen concentrator at the dealer or service point
authorized by CARER.
⚫Environmental Protection
The disposal of wastes and residues shall comply with the relevant national laws and regulations.

16
⚫Graph of Oxygen Concentration Value and Flow Function
Graph of oxygen concentration value and flow function when the nominal pressure at the outlet is zero
⚫Change of Oxygen Concentration with Flow under Different Pressure
Conditions in the Altitude Range of 0-4000m
91
91.6
93.6
93.9
93 92.8
91.6
92
93.8
94
93.2
93
90.2
90.8
92.9
93
92.5 92.6
89
90
91
92
93
94
95
0.0 1.0 2.0 3.0 4.0 5.0
氧气浓度（%）
氧气流量（LPM）
25℃
10℃
40℃
91
75
55
91.5
80
65
93 92.6 91.6
84
75
94 93 92
86
80
94.5 94 93
88
82
50
55
60
65
70
75
80
85
90
95
100
01000 2000 3000 4000
氧气浓度（%）@25℃
海拔高度（m）
5LPM
4LPM
3LPM
2LPM
1LPM
Oxygen concentration
Oxygen flow
Altitude
Oxygen concentration

17
⚫Electromagnetic Compatibility (EMC)
Notes:
➢The oxygen concentrator complies with relevant requirements of YY0505 standard electromagnetic
compatibility.
➢Users should install and use the equipment according to the EMC information in the accompanying
document.
➢Portable and mobile RF communication devices may affect the performance of oxygen concentrator.
Avoid strong electromagnetic interference during operation, such as getting close to mobile phones,
microwave ovens, etc.;
➢See the detailed information of guidelines and manufacturer's statement in the appendix.
WARNING:
➢The oxygen concentrator should not be placed close or stacked up to other equipment. If it is inevitable
to do so, it should be observed and verified that it can operate normally under the existing configuration.
➢In addition to the cables sold by the manufacturer of oxygen concentrator as spare parts of internal
components, the use of accessories and cables other than those specified may lead to an increase in
emission or a decrease in immunity of oxygen concentrator.
Appendix:
Guidelines and Manufacturer's Statement-Electromagnetic Emission
The oxygen concentrator is expected to be used in the following specified electromagnetic environments. The purchaser or
user shall ensure that it is used in such an electromagnetic environment:
Emission test
Compliance
Electromagnetic Environment - Guidelines
RF emission
GB4824
1 group
The oxygen concentrator only consumes RF energy to
enable its internal functions. Therefore, it only generates
slight amount of radio frequency emission, and has little
chance to cause interference to nearby electronic equipment.
RF emission GB4824
Class B
The oxygen concentrator are suitable for use in all
installations, including domestic installations and public
low-voltage power supply networks directly connected to
domestic dwellings
Harmonic emission GB 17625.1
Class A
Voltage fluctuation/scintillation emission
GB 17625.2
Conforming

18
Guidelines and Manufacturer's Statement-Electromagnetic Immunity
The oxygen concentrator is expected to be used in the following specified electromagnetic environments. The purchaser or
user shall ensure that it is used in such an electromagnetic environment:
Immunity test
IEC 60601 Test Level
Coincidence level
Electromagnetic Environment -
Guidelines
ESD
GB/T 17626.2
±6 kV Contact discharge
±8 kV Air discharge
±6 kV Contact discharge
±8 kV Air discharge
The floor should be made of wood,
concrete or ceramic tiles. If the floor
is covered with synthetic materials,
the relative humidity should be at
least 30%.
EFT
GB/T 17626.4
±2 kV For power cord
±1 kV For input/output
cable
±2 kV For power cord
NA
Network power supply should be of
high quality for using in typical
commercial or hospital
environments
Surge
GB/T 17626.5
±1 kV line to line
±2 kV line to ground
±1 kV line to line
NA
Network power supply should be of
high quality for using in typical
commercial or hospital
environments
Voltage sags, short-
term interruptions and
voltage variations on
power input lines
GB/T 17626.11
<5 % UT, last for 0.5 cycle
(Above UT, >95% voltage
sag)
40 % UT, last for 5 cycles
(Above UT, 60% voltage
sag)
70% UT, last for 25 cycles
(Above UT, 30% voltage
sag)
5% UT, last for 5s
(Above UT, >95% voltage
sag)
<5 % UT, last for 0.5 cycle
(Above UT, >95% voltage
sag)
40 % UT, last for 5 cycles
(Above UT, 60% voltage
sag)
70% UT, last for 25 cycles
(Above UT, 30% voltage
sag)
5% UT, last for 5s
(Above UT, >95% voltage
sag)
Network power supply should be of
high quality for using in typical
commercial or hospital
environments If continuous
operation of oxygen concentrator
during power interruption is
requested by the user, uninterrupted
power supply or battery is
recommended.
Power frequency
magnetic field
(50/60Hz)
GB/T 17626.8
3A/m
3A/m, 50Hz
The power frequency magnetic field
should have horizontal
characteristics of power frequency
magnetic field in typical
commercial or hospital
environments.
NOTE: UT refers to the AC network voltage before the test voltage is applied.

19
Guidelines and Manufacturer's Statement-Electromagnetic Immunity
The oxygen concentrator is expected to be used in the following specified electromagnetic environments. The purchaser
or user shall ensure that it is used in such an electromagnetic environment.
Immunity
test
IEC 60601
Test Level
Coincidence
level
Electromagnetic Environment - Guidelines
Radiofreque
ncy
conduction
GB/T
17626.6
Radiofreque
ncy radiation
GB/T
17626.3
3V (effective
value)
150 kHz～80
MHz
3V/m
80 MHz～2.5
GHz
3V (effective
value)
3V/m
Portable and mobile RF communication devices should not be
used closer to any part of the oxygen concentrator, including cables,
than the recommended isolation distance. The distance should be
calculated by a formula corresponding to the transmitter frequency.
Recommended isolation distance
d =
P2.1
d =
P2.1
80 MHz～800 MHz
d =
P3.2
800 MHz～2.5 GHz
Where:
P
—According to the maximum rated output power of the
transmitter provided by the transmitter manufacturer (unit: Watt
(W));
d—Recommended isolation distance (unit: m).
The field strength of fixed RF transmitter is determined by survey
of electromagnetic field a.In each frequency range b should be lower
than coincidence level.
Disturbance may occur near the equipment marked with the
following symbols.
Note 1: The formula of higher frequency band is used on 80 MHz and 800MHz frequency.
NOTE 2: These guidelines may not apply to all situations. Electromagnetic transmission is affected by the absorption
and reflection of buildings, objects and human body.
a The field strength of fixed transmitter, such as base station of wireless (cellular/cordless) telephone and ground mobile
radio, amateur radio, AM and FM radio and TV broadcasting, cannot be accurately predicted in theory. To evaluate the
electromagnetic environment of fixed radio frequency transmitter, the survey of electromagnetic field should be
considered. If the measured field strength of oxygen concentrator is higher than the above radio frequency coincidence
level, oxygen concentrator should be observed to verify whether it can run normally. If any abnormal performance is
observed, supplement measures may be necessary, such as readjusting the direction or position of oxygen concentrator.
b In the whole frequency range from 150 kHz to 80 MHz, the field strength should be less than 3V/m.