Oxus RAK-U06M User manual

OXUS
MODEL
RAK-U06M
RAK-U04M
Medical Oxygen Supply System
User Manual
User Manual

<Safety features of the product>
• Power outage alarm function
When external power is interrupted and no power is supplied to the product, the power
outage alarm goes off to enable fast action using an external visual and auditory signal
output.
• Low pressure alarm function
It can monitor abnormal operations of Booster-Compressor that affects degradation
of oxygen supply efciency and oxygen purity and generates a low pressure alarm to
ensure safety of patients and durability of the product.
<Efciency of oxygen supply>
• Equipped with basic option of Booster Compressor, ow loss due to pipe loads is
reduced and other medical equipment inter-operated with this product can be used reli-
ably.
<Differentiation of maintenance>
• The status (purity of discharge oxygen, lter replace-
ment time, and regular inspection time) of the product
displayed in the product control panel is transferred to
the central server in our company through Ethernet and
managed in real time. Through this, physical and psy-
chological loss due to safety guarantee for patients and
maintenance of equipment can be minimized.
Oxus medical oxygen supply system is
Characteristics and advantages
• A high purity oxygen generating device that uses a physical method of ltration and ab-
sorption of air to separate oxygen and nitrogen. The oxygen is then supplied to oxygen
breathing apparatus connected to patients through gas equipment in hospital.
• This product is designed, manufactured and quality-managed based on ISO 13485 and
GMP quality management system..

Table of contents
Precautions for safety …………… 4
Precautions related to installation …… 4
Precautions related to power supply … 5
Precautions during the use …………… 6
Precaution during cleaning and storing 8
Names of the parts ………………… 9
Product part name and function ……… 9
Control panel……………………………10
Display window …………………………11
Product part name and function ………12
Checklist before the use ………… 13
How to use ………………………… 15
Turning on the operating switch ………15
Check the operating condition…………15
Turning off the operating switch ………16
Product operation step …………… 17
Initial operation step ……………………17
Normal operation step - High purity
oxygen supply step ……………………18
Check the product display
information ………………………… 19
Oxygen concentration indication
information ……………………………19
Filter replacement and regular inspection
information………………………………20
Discharge ow rate and discharge
pressure information……………………20
Alarm function information ……………21
Maintenance and storage ………… 22
Troubleshooting …………………… 23
Product specication……………… 25
Product Warranty ………………… 26

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Precautions for safety The following contents aim to keep the user safety and prevent property
loss and inconvenience. These precautions must be read carefully and the
product should be correctly used.
it indicates general warning or precaution.
it indicates the prohibition of operations or handling during the use of the product.
it indicates specic actions needed for users.
Precautions related to installation
Do not install the product at a place where am-
mable gases are leaked or any possible places
of gas leakage.
There is a risk of re or explosion.
Do not install the product under direct sunlight or
near heating devices, and in particular, near a wet
place.
It can cause product performance degradation and
there is a risk of electric shock.
Do not install the product near where industrial
oil, smoke or metallic dusts are found.
There is a risk of product failure or re.
Do not install the product on uneven or sloping
oor.
It can cause abnormal noise and operation failure..
Please make sure there are no obstacles in front
of the air intake vent (on the side) or outlet vent (at
the rear) of the product.
It can cause a product failure
and degrade oxygen
generation effects.
Keep a gap around the product of at least 20cm.
If the air intake space is not provided sufciently,
oxygen generation capability may be degraded.
Warning
Prohibition
Precaution

Medical oxygen supply system User Manual
5
Once the installation is complete, do not change the
conguration of the product and pipe.
If you require re-installation, please contact the
place of purchase or service center.
Precautions related to power supply
Do not pull the electric wire and handle the prod-
uct with wet hands.
There is a risk of electric shock.
Do not bend the electric wire by force and do not
weigh down the electric wire by heavy objects.
There is a risk of electric shock or re.
Do not operate the oxygen generator using circuit
breakers.
There is a risk of failure or electric shock. Thus, use
the operating switch to control at all times.
If there are abnormal sounds, burning smell, or
smoke from the product, stop the power sup-
ply immediately. After power off, call the place of
purchase and service center.
There is a risk of electric shock or re.
If you require repair of the product, contact the
place of purchase or service center.
Do not disassemble or repair the product arbitrarily.
It can cause electric shock or re.

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Precautions during the use
Do not spray insecticide or ammable gases to
the product.
It is harmful to human body as well as causing
product failure, electric shock, or re.
Do not put ngers or foreign materials to the air
intake vent or outlet vent in the product.
There is a risk of product failure or electric shock.
Do not disassemble, repair, or modify the product
arbitrarily.
There is a risk of product failure, electric shock, or
re. If you require repair of the product, contact the
place of purchase or service center.
A lter must be inserted during the use. Without
lters, the product may degrade oxygen genera-
tion capability or damage to the product.
Keep the product at least 1.5m away from sparks
or ammable materials. Do not smoke a cigarette
near the oxygen generator since it can incur sud-
den ames due to the oxygen.
Do not open the cover while the product is in use.
It can cause electric shock or injury.
Do not place water bottles on the product.
There is a risk of product failure or electric shock.
Do not use the product near discharge ports of
fans or range hood.
The product performance may be degraded.
Filter

Medical oxygen supply system User Manual
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Do not apply excessive impact on the product
articially.
It can cause a product failure or re.
If you feel abnormal vibration and irregular noise,
call the place of purchase and service center im-
mediately. Do not continue using the product.
The power outage alarm operating switch should
maintain “ON” status at all times during the normal
use.
The individual unit operating switch should
maintain “ON” status at all times. (Prohibition of
arbitrary operation)
The pressure controller and ow meter are set at
the optimum condition so do not attempt to control
them.
The display window is a part to display information
of the product so there is no need to control it.
The central control communication cable (LAN
line) should be connected to a router or server at
all times.

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Precaution during cleaning and storing
Cleaning and maintaining the product should be
done after power is off and the oxygen generator
is stopped.
You may get electric shock or injured.
Do not spray water to clean the product and do
not wipe out the product with benzene, thinner, or
alcohol.
There is a risk of electric shock or re.
The product surface may be deformed.
If the product is not in use for a long time, store it
at a low humid place.
Otherwise, metals or electronic circuits inside the
product may be corroded.

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Names of the parts
Product part name and function
Front Back Side
No. Name Description
①Low pressure
alarm
If the oxygen storage tank indicates lower pressure than the set thresh-
old during the product use, the low pressure alarm lamp is ashed and
alarm sound goes off.
②Power failure
alarm
If power outage occurs during the product use, the power outage alarm
lamp is ashed and alarm sound goes off.
③Control panel Product operation and current working conditions can be checked.
④Door handle It can open the product door.
⑤Oxygen dis-
charge port
It is the nal oxygen discharge port to supply oxygen generated in the
product to the gas pipe.
⑥Caster It is used to transfer or x the product.
⑦Cooling fan It is a cooling fan to discharge the heat inside the product to the outside.
⑧Power input It is a power input to supply power source to the product.
⑨Air intake part It is a part where air is introduced as a source gas for cooling of the prod-
uct and oxygen separation.
②①
⑤
④
⑥
③
⑦
⑧
⑨

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Control panel
No. Name Description
①Display window It displays oxygen concentration state and lter replacement, and
regular inspection time.
②Unit condition LED It displays each unit working condition inside the product.
③Flow rate meter It displays a current oxygen ow rate supplied to the gas pipe
through the piping.
④Operating switch It runs or stops the product.
⑤Product working
lamp
The lamp is illuminated when the product is operated as power is
supplied normally.
⑥External power
supply lamp
The lamp is illuminated when external power is supplied to the
product.
⑦Oxygen discharge
pressure meter It displays the oxygen discharge pressure.
⑧Oxygen tank
pressure meter It displays the oxygen tank pressure.
⑨Pressure controller It controls the discharge oxygen pressure.
①
②
③
④
⑤
⑥
⑦
⑧
⑨

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Display window
No. Name Description
①Oxygen concentration display
LED
It displays the discharge oxygen concentration with 20
LED lamps.
②Oxygen concentration status
indicator
It displays a discharge oxygen concentration state, which
is divided into [Warm/Normal/Caution/Check].
③Total runtime initialization button It initializes the accumulated total runtime.
④Current date and time
It displays the current date (year/month/day) and time (AM/
PM, time, min).
⑤Total runtime
It displays an accumulated total runtime into hour (ve digits)
and minute (two digits).
⑥Filter replacement countdown
time indicator LED
It displays the lter replacement countdown time in the
LED.
⑦Regular inspection countdown
time indicator LED
It displays the regular inspection countdown time in the
LED.
⑧Filter replacement countdown
time indicator
It displays the lter replacement countdown time. (four
digits, Hour)
⑨Initialization button of lter re-
placement countdown time It initializes the lter replacement countdown time.
⑩Regular inspection countdown time
It displays the regular inspection countdown time. (four digits, Hour)
⑪
Initialization button of regular
inspection countdown time
It initializes the regular inspection countdown time.
※ ③, ⑨ and ⑪ are functions required by purchase place and service center to manage the product.
Password is set so that general users cannot control.
①
②
③
④
⑤
⑥
⑦
⑧ ⑨ ⑩ ⑪

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Product part name and function
No. Name Description
①
Power failure and
low pressure alarm
Signal terminal
It is a voltage port to utilize additional external alarms upon power
outage and low pressure alarm.
②Power failure alarm
Operating switch It runs the power outage alarm.
③Mechanical totalizer It is a mechanical totalizer without reset function.
④Control panel unit It is a control panel by which product operation and status can be
checked.
⑤Booster unit It is a booster unit that can pressurize the discharged oxygen from
the individual oxygen generator unit to a high pressure.
⑥-⑪ Oxygen generator
unit Six units of individual oxygen generators are installed independently.
⑫Individual unit
Operating switch It runs individual units.
※ RAK-U04M model has no ⑩ and ⑪ oxygen generator units and a sheet metal cover is attached.
①②③
④
⑤⑥
⑦
⑫
⑧ ⑨ ⑩ ⑪

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Checklist before the use
Installation check
Check whether the following conditions are met for the installation of the product.
• Even and no slope place
• No blocking of the air intake and outlet vent (sufficient air flow ensured)
• Low humidity and no flammable materials found at the surrounding
• A place protected from harmful gases or severe dusts.
Power supply check
Check whether external power supply lamp is illuminated with red color. (Check the normal power
supply status of the product)
[Check of the external power supply lamp illumination]
Power outage alarm operating status check
Check whether the power outage alarm operating switch is [ON].
[Power outage working condition check]
Bad power supply
Good power supply
Power outage alarm operating switch OFFPower outage alarm operating switch ON

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Required temperature and humidity for the oxygen generator
Operating temperature: Between approximately 0℃ and 40℃
- If the product is operated under surrounding temperatures with significantly large fluctuation
by external factors, dew condensation occurs thereby shortening the filter life and causing a
product failure.
- If the product is operated at 40℃or higher temperature, oxygen generation capability of the
product can be degraded.
 Operating humidity: Less than 90%
- If the product is operated at 90% or higher humidity, oxygen generation capability of the prod-
uct can be degraded.

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How to use
The operating switch located in the center of the control panel is turned to the [ON] to run the prod-
uct.
1. Product operating lamp illumination
: Once the operating switch is on, the product operating lamp is illuminated with green color.
Turning on the operating switch
Check the operating condition
2. Unit status LED illumination
: After the operating switch is turned on and approximately five sec later, the unit status LED is
illuminated with green color.
(Checks whether the oxygen generator unit and booster unit mounted inside the product are
working correctly)
[Normal status: Seven LED lights are all illuminated]
[Model: RAK-U06M]
[Normal status: Five LED lights are illuminated]
[Model: RAK-U04M]

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3. Check the display window indicator status
: Once the product is running normally, the following screen is displayed in the display window
after 20 sec.
• For five min after the product is running, [WARM] is displayed in the oxygen purity indicator.
• A zirconia sensor was employed to the oxygen sensor and it has a warm time according to the
sensor working principle.
The operating switch located in the center of the control panel is turned to the [OFF] to stop the
product.
: Once the operating switch is turned off, the product operating lamp is turned off.
Turning off the operating switch
Date and
time
Total
runtime
Filter working time Time to next regular
inspection
Company
logo
Oxygen pu-
rity indicator
Note

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Product operation step
1. Discharge bypass step
- The oxygen purity discharged initially is lower than 90% and will reach at 90% or higher after 2 min
later approximately. After around 5 min from the product operation, the product can reach at the maxi-
mum oxygen purity that the product can get (around 93% to 94%). During the bypass time around 2
min, low purity of oxygen is not introduced into the oxygen tank. Thus, the flow meter and two types
of pressure gauge mounted in the control panel have no change and oxygen is not supplied to the
oxygen pipe.
(Discharge oxygen bypass function prevents a low purity of oxygen discharged initially at the product
operation from being supplied to patients.)
<Initial discharge oxygen bypass step>
No changes in the flow meter and two types of pressure gauge
Initial operation step

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2. High-purity oxygen compression step
- After around 2 min from production operation, the bypass step is complete and high-purity oxygen
pressure step is to compress high-purity oxygen discharged from the individual oxygen unit to the
oxygen storage tank with high pressure through the booster compressor. Then, the pressure gauge
values of the oxygen storage tank and oxygen discharge pressure at the control panel are increased
gradually and oxygen is supplied to the gas pipe through the flow meter.
(The discharge pressure of high-purity oxygen pressurized in the oxygen storage tank through the
regulator in this product is set to 4.0 bar when it is shipped. It takes around 8 min in maximum to
reach at this value and it differs according to a flow rate used in the final end.
<High-purity oxygen compression step>
The flow meter and two types of pressure gauge increased gradually
Normal operation step - High purity oxygen supply step
After around 10 min from production operation, high purity oxygen compression step is complete and the
highest purity oxygen of about 93% to 94% is supplied regularly and constantly through the gas pipes.
The oxygen discharge pressure gauge is set to around 4.0 bar so no changes in pressure while the oxy-
gen tank pressure meter varies between 4.4 and 6.4 bar continuously.
<High-purity oxygen supply step>
Discharge flow rate and oxygen discharge pressure are increased to the highest,
Oxygen tank pressure is entered to normal pressure.

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Check the product display information
In the oxygen purity indicator in the display window, the number of LED light illuminated varies de-
pending on oxygen concentration to display the oxygen concentration status message.
Oxygen concentration indication information
LED light count and color indication according to oxygen concentration
※
The LED color in the oxygen purity indicator changed from Green  Yellow Red according to
oxygen concentration.
Status Oxygen concentration
range (%)
LED light count
(ea.) LED color Status indication
Normal 93% - 85% or higher 20 ~ 12 Green NORMAL
Precaution 85 or lower - 78 or higher 11 ~ 5 Yellow/Orange CAUTION
Inspection 78 or lower 4 ~ 0 Orange/Red CHECK
• The oxygen concentration indication information is displayed as [WARM] for about 5 min after product
operation and then displayed normally.
• If the oxygen concentration status message is [Caution] or [Check], call the place of purchase or
service center immediately.
NORMAL CAUTION CHECK
Note

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• Times to filter replacement and regular inspection are displayed using number and LED count.
• Filter replacement countdown time LED is decreased by one in every 100 hour and regular inspec-
tion countdown time alarm LED is decreased by one in every 450 hour.
• Filter replacement countdown time and regular inspection countdown time are displaced in real
time according to product use time.
• If each of the alarm times is below 200hr, contact the place of purchase or service center.
Filter replacement and regular inspection information
[Filter replacement and Regular inspection time]
• Discharge flow rate and discharge pressure are set at the optimum state when the product is
shipped.
• Discharge flow rate of the product can be checked via the display information in the flow meter.
• Discharge pressure of the product can be checked via the display information in the oxygen dis-
charge pressure meter.
Discharge flow rate and discharge pressure information
※ Display value of normal state of oxygen
discharge pressure: 3.8 - 4.2 bar
※ Display value of normal state of oxygen tank
pressure: 4.4 - 6.4 bar
Early stage of the product use In case of 1,000 hr elapsed after the product use
• Users should not control the flow rate meter and pressure controller.
• Displayed state in the flow rate meter can be different from real flow rate slightly due to load pressure
in the pipe.
Flow
rate
meter
Oxygen discharge pressure meter
Oxygen tank pressure meter
Note