Yuwell 7F-5A User manual

User's Manual
7F-5A/7F-5AW
Oxygen Concentrator
Please read the user's manual closely before using!
JIANGSU YUYUE MEDICAL EQUIPMENT & SUPPLY CO., LTD.
Sales Center Address: Huanyuan East Road No.1, Xuzhuang Software Park,
Nanjing, Jiangsu Province, P.R. China, 210000
Manufacturing Address: YunYang Industrial Park, DanYang, Jiangsu Province,
P.R. China, 212300
http://www.yuwell.com

SAFETY NOTES---------------------------------------------1-4
FEATURES----------------------------------------------------5-8
HANDLING----------------------------------------------------9-9
OPERATING＆INSTALLATION-------------------------10-15
MAINTENANCE-------------------------------------------16-18
TROUBLE SHOOTING GUIDE -------------------------19-21
OTHER ATTENTION ITEMS---------------------------22-23
TABLE OF CONTENTS WARNING: For avoiding power outage or oxygen
concentrator operating failure, exigent oxygen user and
serious patient must equip with reserve oxygen supply (for
example: oxygen cylinder, oxygen bag). This device is to be
used as an oxygen supplement and is not considered for life
supporting or life sustaining.
Use eligible, safe power set and junction box.
When the electrical source, power voltage is beyond the
normal power voltage range. Please add voltage stabilizer.
The concentrator should always be kept in the upright to
prevent cabinet damage when transporting.
Only the techncian can open the oxygen concentrator's
cabinet.
Ⅰ. BEFORE INSTALLATION
Ⅱ. STORAGE PLACE
1
You may select the most suitable room when using your
oxygen concentrator. Use the casters to transfer the
concentrator from room to room.
Oxygen concentrator must avoid from heat, fire, moisture,
exorbitant or over-low extream condition.
Sundries and vessel should not be placed on top of the
concentrator.
NEVER block the air inlet of the unit or place it on a soft
surface, such as a bed or couch, where the air inlet may be
blocked. Keep the inlet free from lint, hair ,etc.
Place the unit away from all sides for at least 10cm
(4inches) from walls, draperies, furniture, or other
obstruction. DO NOT place the unit in a confined area.
SAFETY NOTES

SAFETY NOTES SAFETY NOTES
Ⅲ. USING
Only the authorized or trained technician can perform the
maintenance or adjustments to the oxygen concentrator.
The manufacturer recommands each operation time shoud
not be less than 30 mininutes, do not frequently press the
switch in order to extend the operation life to the machine.
Avoid using while bathing. If continuous usage is required by
the doctor's prescription:
The concentrator must be located in another room at least
2.5m away from the bath.
A product should never be left unattended when plugged in.
This device is to be used only in accordance with the
prescription of a doctor and this user's manual. If at any time
the patient or attendant conclude that the patient is
receiving an insufficient amount of oxygen, the supplier
and/or doctor should be contacted immediately. No
adjustments should be made to the flowrate unless
prescribed by a doctor.
Ⅳ. MAINTENANCE
Ⅴ. RADIO FREQUENCY INTERFERENCE
Ⅵ. TO REDUCE THE RISK OF BURNS,
ELECTROCUTION, FIRE OR INJURY TO PERSONS
The use of oxygen therapy requires that special attention to
reduce the risk of fire. Users MUST NOT SMOKE while using
this device. Keep all matches, lighted cigarettes or other
sources of ignition out of the room in which this product is
located. NO SMOKING signs should be prominently displayed.
Textiles and other materials that normally would not burn
are easily ignited and burn with great intensity in oxygen
enriched air. Failure to observe this warning can result in
severe fire, property damage and cause physical injury or
DEATH.
For optimum performance, do not open or turn off the
concentrator frequently, reset after 3~5 minutes. Shorter
periods of operation may reduce maximum product life.
A spontaneous and violent ignition may occur if oil, grease or
greasy substances come in contact with oxygen under
pressure. These substances MUST be kept away from the
oxygen concentrator, tubing and connections, and all other
oxygen equipment. DO NOT use any lubricants unless
recommended by manufacturer.
32
WARNING: DO NOT come in contact with the concentrator while
wet.
DO NOT contact the product that has fallen into water.
Unplug immediately.
DO NOT place or store product where it can drop into
water or other liquid.
WARNING:
WARNING:
Most electronic equipment is influenced by Radio Frequency
Interference (RFI). CAUTION should be exercised with regard
to the use of portable communications equipment in the
area around such equipment.
Use this product for only intended use as described in this
manual.
Close supervision is necessary when this product is used
near children or individuals with disablity.
Use of some administration accessories or certain humidifiers
not specified for use with oxygen concentrator may impair
the performance.
WARNING: DO NOT use parts, accessories or adapters other than
those authorized by manufacturer.
DO NOT connect the concentrator with other oxygen
concentrators or oxygen therapy devices.
WARNING:

Avoid creation of any spark near medical oxygen equipment.
This includes sparks from static electricity created by any
type of friction.
In certain circumstances oxygen therapy can be hazardous.
Manufacturer recommends that you seek medical advice
before using this product.
Ⅲ. STRUCTURE
Ⅰ. SUMMARY
The function of oxygen
For hospital and homecare to supply oxygen to patients.
Supplying oxygen to patients can assist in the treatment of
heart head blood-vessel, respiratory system, such as chronic
obstructive pneumonia disease, rehabilitation and hypoxia
conditions.
Oxygen could improve body function, especially suit for
elderly, pregnant women, physique, students etc. who got
physiological hypoxia. It may also reduce fatigue after heavy
manual or mental consumption.
Ⅱ. THE SCOPE OF PRODUCTS
54
Device failure alarm function (including pressure/cycle failure,
compressor failure, low oxygen concentration).
The product is mainly composed of oxygen making host, flow
meter, humidifier.
Power loss alarm function.
The compressor with thermal protector guarantee better
security.
With time collect function: Display the operation time in LCD.
*With nebulizer function. (7F-5AW)
Safety plastic shell.
SAFETY NOTES FEATURES

76
250kPa±50kPa (36.25psi±7.25psi)
9.*Maximum Nebulization Rate: ≥0.1mL/min(7F-5AW)
1.Maximum recommended flow: 5L/min
5.limited pressure:40kPa~70kPa
Oxygen Concentration:%
4.Oxygen Concentration: ≥90%
6.Graph showing values of oxygen concentration as a
function of flowrate at a nominal outlet pressure of zero
(Figure 1):
7.Pressure Relief Mechanism Operational at:
2.Flowrate at nominal outlet pressures of zero and 7kPa:
0.5~5L/min
3.Change in maximum recommended flow when back
pressure of 7kPa is applied: 0.5L/min.
8.Noise: ≤60dB（A）
FEATURES FEATURES
Low oxygen concentration alarm function.
17.Electric classification: Class II, type BF application part
18.Work system: work continuously.
16.Minimum operating time: 30minutes
20.NORMAL OPERATION CONDITIONS：
●Temperature range: 10℃~40℃ (50℉~104℉);
19.Enclosures Protection Classification：IPX0
10.PowerSupply: AC220V±22V 50Hz±1Hz
14.Altitude: Up to 1828 meters (6000 ft) above sea level
without degradation of concentration levels. From 1828
meters (6000 ft) to 4000meters (13129 ft) below 90%
efficiency.
●Compressor with abnormal high temperature, automatic
shutdown;
11.Input Power: 500VA
12 W.eight: 17kg
13.Dimension: cm (15.2") x W25.5cm (10.0") x D47.5cm H38.5
(18.7")
15.Safety system:
● Current overload or loose connection, automatic shutdown;
● High & low pressure alarm function, automatic shutdown;
●Compressor error function, automatic shutdown;
●Relative humidity: 30%~75%;
●Atmosphere pressure: 860hPa~1060hPa(12.47psi~ 15.37psi);
Ⅳ. SPECIFICATIONS
Oxygen Flow: L/min
70.0
75.0
80.0
85.0
90.0
95.0
100.0
1.0 4.0 2.0 5.03.0

9
8
22.Transportation and storage conditions：
●Temperature range: -20℃~+55℃(-4℉～+131℉),
21.Suggestion: The length of nasal oxygen cannula should be
less than 15.2 meters and should not be pinched.
20.Temperature at oxygen outlet: ≤46℃
●Atmosphere pressure: 700hPa~1060hPa (10.15psi ~ 15.37psi).
NOTE: When storage temperature is below 5℃, please keep
the equipment in normal working condition for at least 4
hours before using.
●Relative humidity: 10%~93%, no condensation,
NOTE: Oxygen concentrator should be stored with out
intense sunlight, no corrosive gas and ina well ventilated
room, avoid jolt and inverted recumbent transport.
FEATURES
NOTE: Unless the oxygen concentrator is to be used
immediately, otherwise it should be stored in the containers
until it's being used again.
Check for any obvious damage to the carton or its contents.
If damage is evident, please notify the carrier or local dealer.
Remove all loose packing from the carton.
Carefully remove all the components from the carton.
Examine exterior of the oxygen concentrator for nicks,
dents, scratches or other damages. Inspect all components.
DO NOT place other objects on top of the repackaged
concentrator.
Store the repackaged oxygen concentrator in a dry area.
Ⅰ. UNPACKING
Ⅲ. STORAGE
Ⅱ. INSPECTION
HANDLING

1110
OPERATING ＆ INSTALLATION
Ⅰ. FEATURE VIEW
※Nebulizing
outlet
(7F-5AW)
OPERATING ＆ INSTALLATION
Ⅱ. PREPARE WORK
Do not use extended
power line.
Screw securely to the
bottle back clockwise.
Close the transparent door.
Plug in: First confirm the
power switch of oxygen
concentrator is off, then
connect the plug.
Open the transparent door, unscrew the bottle from the
humidifier counter-clockwise. Fill the bottle with pure water
(or distilled water) to the level indicated by the
manufacturer.
Oxygen outlet
Oxygen inlet Safety valve
(on the inside)
Cover
Tube
Ⅲ. OXYGEN ABSORBING OPERATION
Turn the power switch to " | ", the LCD shows "HELLO" ,
Green, yellow, red indicator all light indicates that the
machine is normal. The green indicator lights only 1 second
later. 4 seconds later, the LCD shows elapsed time and time
setting interface then the machine goes to normal operation.
Figure 5
2
The MINIMUM
water level
The MAXIMUM
water level
Figure 4
Figure 3

1312
OPERATING ＆ INSTALLATION
Turn the flowrate knob to require
oxygen need (Read as centre of the
black ball). Turn the knob
anticlockwise to increase the
flowrate, and clockwise to decrease.
Meanwhile, humidifier bottle will
have air bubble around the sieve
core. Then, oxygen comes from the
oxygen outlet. (Figure 6)
Connect the nasal oxygen cannula
to the oxygen outlet of the
humidifier, the other end match the
patient.
Figure 6
CAUTION: If the flowrate on the flowmeter ever falls below
0.5L/min, check tubing or accessories for blocked or kinked
tubing or a defective humidifier bottle.
If the humidifier makes continuous sound, it shows that the
nasal oxygen cannula jammed, then please clear the pipeline.
NOTE: Adjust the time of absorbing oxygen and the flowrate
range according to the doctor's advices.
Fill proper medicinal liquid in
the nebulizing cup (Please
follow the doctor's advices for
nebulizing time or don't
exceed the maximum scale of
the nebulizing cup).
Upward pull out the nebulizing
cover on the nebulizing
interface. (Figure 7)
Figure 7
OPERATING ＆ INSTALLATION
NOTE: the time for nebulizing should follow the doctor's
advices.
When nebulizing completing, please turn the nebulizing
cover right to nebulizing interface for tightening. When the
treatment finishes, please turn off the oxygen concentrator.
Connect the air hose to neblizing cup and nebulizing
interface, then turn on the power of the oxygen
concentrator, now can begin nebulizing cure immediately.
Screw the nubilizering cover when finished.
Ⅴ. ALARM SIGNAL
(2)Compressor failure
The oxygen sensor starts working after 5 minutes of
operation. The indicator shows different colours on the basis
of different ranges of oxygen concentration.
(1)Pressure, cycle failure
(3)Low oxygen concentration
Indicator interpretation
The machine has detection function as follows:
Remarks: The above alarm state of the oxygen concentrator
belongs to low priority.
Red
Yellow
Green
I/O
oxygen concentration＜82%
3)Power loss alarm
1)Pressure, cycle failure alarm
2)Compressor failure alarm
Symbol Status Indicator lights
System is in good condition: oxygen
concentration≥82%
*Ⅳ. NEBULIZING OPERATION (7F-5AW)

14 15
OPERATING ＆ INSTALLATION
Ⅵ. TURNNING OFF
Take off nasal oxygen cannula from oxygen outlet first,
close power switch, and then cut off power source.
Symbol Description
Alternating current
Symbol Description
Consult the manual
ClassⅡEquipment Type BF Applied part
ON(power, connection
to the mains)
OFF(power, disconnection
from the mains)
KEEP UP
FRAGILE KEEP DRY
Ⅶ. SYMBOLS
OPERATING ＆ INSTALLATION
The alarm signal
1.When oxygen concentration ≥ 82% the green indicator
lights, LCD shows " elapsed time -– " the machine is in good
condition.
2.When oxygen concentrations ＜82% the yellow indicator
light, LCD shows "elapsed time -– ". Please contact the
supplier immediately. Users can continue to use, and please
ensure that backup oxygen is nearby.
NOTE: The minimum operating time is 30 minutes.
3.Pressure, cycle failure alarm--the red indicator lights with
continuous alarm sound, LCD shows "E1 or E2" machine stops
working. Please shut down immediately and use backup
oxygen, and contact the supplier immediately.
4.Compressor failure alarm--the red indicator lights with
continuous alarm sound, LCD shows "E3 or E4", machine
stops working. Please shut down immediately and use
backup oxygen, and contact the supplier immediately.
5.In case of power loss alarm, the red indicator will be turned
on, an alarm will be sent, no display, and the machine must
be shutdown. Please check the power input.
4IPX0
No open flame
Unprotected
Stacking imitation

16 17
MAINTENANCE
1.Clean the filters with a vacuum cleaner or wash in warm
soapy water and rinse thoroughly.
2.DRY the filters thoroughly before reinstallation.
Damage: Do not operate the concentrator without the filters
installed, or while filters are wet. These actions could
permanently damage to the concentrator.
Ⅲ. CLEANING HUMIDIFIER
Clean humidifier once a week with soapy water and rinse it
with a solution of water and vinegar(10:1). Rinse thoroughly
with warm water and refill with pure water (or distilled
water) to the level shown on the humidifier. (NOTE: No blobs
in oxygen tubing)
Change the water in humidifier bottle every day.
Disassembly
(1) Screw off the bottle. (Figure 10).
(2) Take out of the core tube and sieve core. (Figure11).
Figure 10 Figure 11
*Ⅳ. CLEANING NEBULIZING ASSEMBLY (7F-5AW)
Pull out the air hose, pull the mouthpiece, downward pull
the nebulizing cup's cap, empty remained medicinal liquid in
the nebulizing cup, then wash the air hose, mouthpiece,
nebulizing cup's cap, nebulizing baffle, nebulizing cup, ripple
Clean the nebulizing assembly after using each time.
MAINTENANCE
WARNING: CUT OFF the power supply first. To avoid electrical
shock.
DO NOT removes cabinet.
Ⅰ. CLEANING CABINET
Ⅱ. CLEANING OR REPLACING FILTERS
Clean the cabinet with a mild household cleaner and non-
abrasive cloth or sponge at least one time each month.
Please clean and replace the filters in time, it's very
important to protect compressor and delay machine's life.
CAUTION: DO NOT operate the concentrator without the filters
installed.
Replace the ll-stage filter once a month. (Figure 9)
Figure 9
The mesh in filter cleans once half a month. I-stage filter can
be taken out of the foreside panel.(Figure 8)
I -stage filter
Remove panel cover
according to be
direction of the arrow. Figure 8

1916
TROUBLESHOOTING
18
MAINTENANCE
NOTE: DO NOT cook the accessories above for wash or wash
them with boiled water, in case they'll distort when heating.
After finishing washing you must dry all the accessories
before storing.
tube, T-piece, etc , with pure water or immerge them in
warm water for about 15 minutes(Figure 12). In order to
wash them properly, you may add some vinegar in water.
Air hose
Cup
Baffle
Cap
Ripple
tube
T-piece
Mouthpiece
Figure 12
Ⅴ. REPLACE FUSE TUBE
Fuse tube for net power (Figure 13)
WARNING: CUT OFF the power
supply first.
Type: T5AL250V/φ5x20
Open the top cover, unscrew the
screws. Unscrew fuse box counter
clockwise, replace the fuse tube.
Fuse
Figure 13
故障现象 Solution
Probable cause
Symptom
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds, and
there is no display
on the screen.
1) There is a poor
contact between the
power cord plug and
outlet.
1) Plug the power cord plug
into the outlet firmly.
2) There is no power
output from the outlet.
2) Move it to the outlet with
power output.
3) There is insufficient
power from the outlet.
3) Do not use the extension
cord; move the oxygen
concentrator to another
power outlet or circuit.
4) The fuse on the main
power supply is blown.
3) Do not use the extension
cord; move the oxygen
concentrator to another
power outlet or circuit.
5) If the oxygen concentrator is still not operated,
please contact the supplier.
After turning on
the machine, the
machine can be
operated normally
and the
flowmeter can be
properly adjusted,
but there is a little
or no oxygen
output.
1) There is no seal
between the humidifier
bottle and the cover and
air leakage.
1)Reinstall and tighten the
humidifier bottle and the
cover.
2) Humidifier safety
valve open.
2) Slightly wobble Humidifier
shuts the safety valve.
3) Humidifier outlet and
output line connection is
not in place, leakage.
3)Re-insert the outlet line of
Humidifier.
4) Oxygen supply tool
defective
4)Replacement of Oxygen
supply tool
5) If this condition persists, please contact the supplier.

21
20
TROUBLESHOOTING TROUBLESHOOTING
故障现象 Solution
Probable cause
Symptom
The oxygen
concentrator is
operated, but the
yellow indicators
are turned on at
the same time.
1) Oxygen concentration
<82% 1) Clean or replace the filter.
2)Oxygen flow exceeding
recommended maximum
flow：＞5L/min
2) Adjust the flow rate to the
specified position based on
the doctor's advices.
3) If this condition persists, the machine can be used
continuously, but must contact the supplier.
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds and
"E1" is shown on
the display screen.
1) The system cycle
pressure is too low. 1) Clean or replace the filter
element.
2) If this condition still persists, shutdown the machine
and contact your supplier immediately.
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds and
"E2" is shown on
the display screen.
1) The system cycle
pressure is too high. 1) Shutdown the machine
and contact the supplier
immediately.
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds and
"E3" is shown on
the display screen.
1) The compressor
circuit is open-circuit. 1) Shutdown the machine
and contact the supplier
immediately.
故障现象 Solution
Probable cause
Symptom
* In atomization
operation, there is
small or no
atomization
output from the
nebulizing
assembly (only for
7F-5AW).
1) The n e b u l i z i n g
assembly is not installed
in place or is installed
incorrectly.
1) Properly install the
nebulizing assembly in place
with the specified method.
2) T h e n e b u l i z ing
assembly is deformed
during cleaning and
disinfection.
2) Move it to the outlet with
power output.
3) T h e n e b u l i zing
assembly outlet is
blocked.
3) Clean or replace the
nebulizing assembly.
5) If this condition persists, must shutdown the
machine and immediately contact the supplier.
The oxygen
concentrator is
not operated, the
red indicator is
turned on, the
alarm sounds and
"E4" is shown on
the display screen.
1) The compressor
circuit is short-circuit. 1) Shutdown the machine
and contact the supplier
immediately.
4) The drug liquid is
filled excessively.
4) Fill the proper amount of
drug liquid below the
maximum level on the
atomization cup based on the
doctor's advices.
CAUTION: If you have all other problems, TURN OFF the
concentrator first, use your reserve oxygen supply,
and contact the supplier immediately.

23
22
Denitrogen
Ⅰ. GAS PASS OPERATION SKETCH MAP:
Heat
exchanger
Air valve
Unilateralism
valve
Flowmeter
Air Compressor
Oxygen azote separation Molecular
sieve
Oxygen Commute
valve
Azote
Product
tank Pressure
regulator
Humidifier
Nasal oxygen
cannula
Filter
Bacilli filter
OTHER ATTENTION ITEMS OTHER ATTENTION ITEMS
Low power supply
Transformer
Fuse
~Electronic control
circuit
Assembled
valveⅡ
Assembled
valveⅠ
Compressor
Fan
Ⅱ. ELECTRICAL RATIONALE
Ⅲ. ACCESSORIES LIST
1. 1setNasal oxygen cannula
2. ' 1pieceUser s manual
All specifications and product configurations are subject to
change without notification.
4.Fuse tube 2pcs
*5.Nebulizer(7F-5AW) 1set
3.Ⅱ-stage filter 1set