ResMed Mobi User manual

User guide
English
User guide

Contents
Welcome .................................................................................1
Indications for use..............................................................1
Contraindications................................................................1
At a glance ..............................................................................4
About your device ..............................................................5
Control panel......................................................................6
Display screen....................................................................7
Getting started........................................................................8
Using the carrying case ......................................................8
Charging the internal battery ..............................................8
Setting up your prescribed device setting ..........................9
Power supply options.........................................................9
Battery life and recharge times ........................................ 11
Using a nasal cannula....................................................... 12
Managing the cannula ...................................................... 13
Operating your device..........................................................14
Starting therapy................................................................ 14
Turning on/off the device ................................................. 15
Verifying normal operation ............................................... 15
Understanding alarm indicators ........................................ 17
Caring for your device..........................................................18
Cleaning the fan vents...................................................... 18
Cleaning the device and carrying case.............................. 18
Storing the device ............................................................18
Inspecting the nasal cannula ............................................ 18
Extending the service life of the rechargeable batteries ... 18
Traveling with your device................................................ 19
Troubleshooting ...................................................................19
Alarms.............................................................................. 19
Rest mode ....................................................................... 20
Power .............................................................................. 21
Charging...........................................................................21
Battery ............................................................................. 22
Fan................................................................................... 23
Triggering......................................................................... 23
Technical specifications ....................................................... 23
Displayed values ..............................................................25
Performance values ......................................................... 25
Internal battery values ...................................................... 26
Standard compliance........................................................ 26
Symbols ................................................................................26
Servicing ............................................................................... 27
Technical support................................................................. 27
Limited warranty .................................................................. 28
Guidance and manufacturer’s declaration
electromagnetic emissions and immunity ........................ 29

English 1
Welcome
The ResMed Mobi™is a portable oxygen concentrator (POC).
WARNING
Read this entire guide before using the device.
CAUTION
In the US, Federal law restricts this device to sale by or on
the order of a physician.
Indications for use
The ResMed Mobi is used on a prescriptive basis by adult
patients who are diagnosed as requiring supplemental oxygen.
This oxygen concentrator will provide supplemental, high
concentration oxygen to these patients. It is not
life-supporting or life-sustaining.
It may be used continuously in a home, institution or travel
environment. The Mobi is also portable.
Contraindications
•The device is not intended to be life-sustaining or
life-supporting.
•In certain circumstances, oxygen therapy can be
hazardous. Seek medical advice before using this device.
•The device is designed to provide a flow of high-purity
oxygen at four different settings. The device should only
be used by patients prescribed oxygen therapy within this
range.
•Additional monitoring may be required for patients using
this device who are unable to hear, see or understand
audible/visual alarms or communicate discomfort.
GENERAL WARNINGS
•It is the responsibility of the patient or provider to
make back-up arrangements for an alternative oxygen
supply in case of power outage or mechanical failure.
•The device is to be operated in the approved carrying
case provided or other ResMed approved bag.
•Do not operate the device in any other enclosed bag as
improper ventilation will impair performance. Use only
the carrying case provided with the device or in a
ResMed approved bag.
•Do not open or modify the device. There are no user
serviceable parts inside. Repairs and maintenance
should only be performed by an authorized ResMed
service agent.
•Do not press the control panel buttons or screen with
any hard, sharp or small object as it may damage the
surface.

2
GENERAL WARNINGS (continued)
•The recommended nasal cannula maximum length to
be used with the Mobi is 7 ft (2 m). Be cautious when
using the nasal cannula or power cords as there is a
risk of strangulation if misused.
•Prolonged exposure to cannula may cause skin
irritation.
•Do not use power supplies or accessories other than
those provided with the device as the use of
non-specified accessories may impair performance.
•Use only spare parts recommended by ResMed to
ensure proper function and to avoid the risk of fire and
burns.
•For proper operation, the device requires unobstructed
ventilation. Always make sure any openings in the
carrying case provided or in a ResMed approved bag
are not obstructed by items which may prevent
ventilation. Do not place the device in a small closed
space (eg, closet).
•The device should be located as to avoid pollutants or
flames.
•The device should not be used adjacent to or stacked
with other equipment. If adjacent or stacked use is
necessary, the device should be observed to verify
normal operation in the configuration in which it will
be used.
•Portable and mobile RF communications equipment
can affect medical electrical equipment.
•When traveling by air, the device and external battery
must be transported as carry-on (not checked)
baggage.
•Do not operate the device at altitudes, temperatures
and humidity levels outside the specified operational
environment conditions. Extreme altitudes,
temperatures and humidity levels are expected to
adversely affect the flow rate and the percentage of
oxygen; and consequently the quality of the therapy.
•The device and external battery contain lithium-ion
batteries that are subject to special shipping
regulations. If shipping either the device or external
battery, notify the shipper that the shipment will
contain lithium-ion batteries.
•In the event of a battery’s cell leaking, do not allow the
liquid to come in contact with the skin or eyes. If
contact has been made, wash the affected area with
ample amounts of water and seek medical advice.
•Do not dismantle, open or shred secondary cells or
batteries.
•Do not expose cells or batteries to heat or fire and
avoid storing them in direct sunlight.
•Do not use alcohol, solvents, polishes or any oily
substances on the device, as they are flammable.

English 3
GENERAL WARNINGS (continued)
•Do not use oil, grease or petroleum-based products on
or near the device as the use of such products may
damage the electronic components of the device.
•Do not submerge or expose the device to liquids as it
may damage the electronic components of the device.
•Use only water-based lotions or salves before and
during oxygen therapy. Do not use petroleum or
oil-based lotions or salves to avoid the risk of fire and
burns.
•Do not lubricate fittings, connections, tubing or other
device accessories to avoid the risk of fire and burns.
•To avoid electric shock, unplug the device and remove
the external battery before cleaning the carrying case.
Do not put the device under any liquids.
•Always set the device to the patient's prescribed level
of oxygen flow. Do not increase or decrease the flow
rate from the prescribed level until a physician is
consulted.
•Open flames or smoking during oxygen therapy are
dangerous and may result in fire, facial burns, or
death. Do not allow smoking or open flames within 7 ft
(2 m) of the device or any oxygen carrying accessories,
such as an attached cannula.
•Oxygen makes it easier for a fire to start and spread.
Do not leave the nasal cannula on bed covers or chair
cushions if the device is turned on, but not in use; the
oxygen can make the materials flammable. Turn the
device off when not in use to prevent oxygen
enrichment.
•The settings of this device may not correspond with
continuous flow oxygen, or other models or brands of
oxygen concentrator.
•Use of equipment in environments with strong wind or
draughts may affect delivery of oxygen.

4
At a glance
The Mobi includes the following:
1
Device
2
Carrying case
3
Shoulder strap
4
AC power supply and cord
5
DC power supply
Contact your equipment provider for a range of accessories
available for use with the device including:
•External battery
•Standard single-lumen nasal cannula
•Mobi backpack
•Mounting straps.

English 5
About your device
1
Oxygen port
5
Fan inlet vent
2
Control panel
6
Fan outlet vent
3
Charger port
7
External battery port
4
Air filter cover
CAUTION
The use of accessories or service equipment not specified
for use with the device may impair its performance.

6
Control panel
1
Power
indicator
Displays a green LED when the device is
on and in use.
2
Power
button
•Illuminates the display screen when
pressed once.
•Turns the device on or off when pressed
and held.
3
Alarm
indicator
Displays a yellow LED and sounds an
audible signal (a tone or alarm) when a
change in operating status or a condition
occurs that requires response.
4
Mute button
Disables audible alarm signals during
operation. If an alarm has been muted, the
Mute symbol will appear on the Display
Screen.
5
Display
screen
Displays operational indicators.
6
Navigation
controls
Plus and minus buttons: Adjusts the device
setting (1, 2, 3 or 4).
Right and left arrow buttons: Illuminates
the screen when pressed once.
OK button:
•Illuminates the screen when pressed
once.
•Displays the device serial number and
run times when pressed and held.
CAUTION
Use the mute button appropriately as it mutes essential
audio signals regarding the status of the device.

English 7
Display screen
1
Message field
Displays the highest priority alarm.
2
External
power symbol
Displays when the device is connected
to an external power supply (AC or DC).
3
Device setting
level
Represents the selected device setting
(1, 2, 3 or 4).
4
PULSE-WAVE®
breath
detection
symbol
Displays when a breath is
detected and the device
delivers a bolus of oxygen.
5
Auto-dose
symbol
Displays when an automatic
bolus of oxygen is delivered.
6
User mode
Displays inhalation sensitivity modes:
Active or Rest. These settings
automatically adjust based on breathing
patterns.
7
INT and EXT
battery bars
Represent the charging level of the
internal (INT) and external (EXT) batteries.
Each battery bar is divided into
four segments representing
25% charge levels.
When the battery is almost
empty, an X may show on the
battery bar.
8
Operating
status field
Indicates if the device is Running,
Charging Internal or Charging External.
When the battery is fully charged,
Charging Internal or Charging External
will disappear from the display.
9
Mute symbol
Appears only when the mute function is
activated.

8
Getting started
The Mobi is to be operated and stored in its carrying case.
Before using the device for the first time, charge the battery
and set up your prescribed device setting.
If assistance is needed in setting up, using or maintaining
Mobi, contact your equipment provider.
Using the carrying case
The Mobi carrying case provides protection for the device.
1. Unzip the carrying case and insert the device with the
oxygen port and charger port facing the front pocket of the
carrying case.
2. Fully zip up the side of the carrying case.
Note: Verify that the air vents are not blocked as blockage
may cause the device to overheat during operation and power
off.
Charging the internal battery
1. Fully charge the internal battery by connecting the AC
power supply to the charger port on the device and a
power outlet.
It can take up to 4 hours to reach a full charge on the
internal battery.
2. Verify that the external power symbol, the Charging
Internal message and the INT battery bar appear on the
display screen.
This indicates that the device recognizes the external
power source and is charging the internal battery.

English 9
CAUTION
•If the device has been stored at the minimum or
maximum storage temperature, it may take up to 60
minutes at ambient temperature 68° F (20°C) before the
device will be ready for use.
•When power supply is connected, ensure that the
device is positioned so that it is not difficult to
disconnect the power supply.
Setting up your prescribed device setting
1. Press and hold the power button to turn the device on.
The display screen and power indicator will illuminate.
2. Use the plus or minus buttons to select the device setting
prescribed by your physician. This device setting will be
set and used when you start therapy.
3. Press and hold the power button to turn off the device.
Power supply options
AC power supply
The device can be powered and charged from a standard
100-240 VAC, 50-60 Hz power outlet.
•When the device is connected to an AC power supply, that
power supply powers the device and charges the internal
or external battery.
•The external power symbol will appear on the display
screen when the device is connected to an AC power
supply.
•Using an AC power supply that is not specified by ResMed
may damage the device and will void all warranties.
DC power supply
The device can be powered and charged from a vehicle’s (eg,
car, boat, motor home) standard 12 VDC power outlet.
•The vehicle battery will power the device and charge the
internal or external battery.
•The external power symbol will appear on the display
screen when the device is connected to a DC power
supply.
•The 12 VDC power outlets in some vehicles will not
provide sufficient current to operate the device and charge
the battery at the same time. Verify that a DC power outlet
can provide at least 10 amps at 12 VDC.

10
•Auxiliary power on vehicles varies significantly, so charge
times will vary.
•It is recommended that the vehicle be turned on before
plugging the DC power supply into the device.
Internal battery
A rechargeable internal battery is located within each device.
•When the device is being powered by the internal battery,
the display will read Running Internal and the INT battery
bar will appear.
•If the device is not connected to the AC or DC power
supply, the internal battery will slowly discharge over time
even when not in use.
•Always check the battery charge level prior to use to make
sure there is an adequate charge.
•It is recommended that the internal battery, even if only
partially used, be recharged as often as possible. The
internal battery cannot be overcharged, so the device can
be left plugged into an external power supply
continuously.
External battery
The external battery connects directly into the device’s
external battery port.
•When the external battery is connected and the device is
running, the display will read Running External and the
EXT battery bar will appear.
Charging the external battery
1. Place the external battery into the side pouch.
2. Connect the external battery to the external battery port.
3. Connect the device to a power outlet using either an AC or
DC power supply.
4. Verify that the external power symbol, the Charging
External message and the EXT battery bar appear on the
display screen.

English 11
CAUTION
•Do not use an external battery that is not authorized by
ResMed.
•Ensure that the device is not powered on when
connecting and disconnecting the external battery.
Notes:
•It can take up to 2 hours for an external battery to reach a
full charge. When the external battery is fully charged, the
Charging External message will disappear from the
display screen.
•By design, the external battery will power the device when
the external battery is connected to the device.
•Once the external battery is empty, the device will switch
to internal battery power. If both the internal and external
batteries are empty, it can take up to 6 hours to achieve a
full charge in both batteries.
•A new device or one taken from storage may not display
Charging Internal or Charging External when plugged
into the charger. If this operating status does not display,
reset the device to default factory settings. Refer to
Troubleshooting Alarms to perform an electronic reset
(see page 19).
•When Charging Internal or Charging External appears,
leave the charger on. Recharging an empty internal battery
can take up to 6 hours and less time for an external
battery.
Battery life and recharge times
The following table provides guidance when powering the
device with the battery:
Battery
type
Battery life Battery recharge
Device setting While in
use
While
not in
use
1234
Internal
battery 8.6 hrs 6.0 hrs 3.8 hrs 3.2 hrs 6.1 hrs 3.6 hrs
External
battery 4.5 hrs 3.0 hrs 1.9 hrs 1.6 hrs 3.1 hrs 1.8 hrs
Note: Hours are approximate and based on a breath rate of 20 bpm. The
device will operate up to the battery life (hours) specified.

12
Using a nasal cannula
The oxygen port on the device rotates to reduce the risk of a
kinked cannula.
Attaching the cannula
1. Align the oxygen port to the upright position. The oxygen
port should be aligned at a 90° position.
2. Install the cannula adapter by rotating and pressing it onto
the fitting. Press down to fully seal the connection and
test the seal with a light pull.
Note: To ease cannula removal, the adapter should not be
advanced past the fourth rib of the fitting.
Removing the cannula
1. Place the fitting in the upright position and grasp the
cannula adapter as close to the fitting tip as possible.
2. Remove the cannula by rotating and pulling straight up on
the cannula adapter.
Note: Do not pull the cannula abruptly or at any direction
as it may break the fitting.

English 13
Managing the cannula
The carrying case strap can be used to wrap the cannula
tubing. This will prevent the cannula from being pinched or
kinked to avoid disruption of oxygen flow.
1. Fully unzip the strap.
2. Pass the adapter end of the cannula tubing through the
closed zipper end of the strap until the adapter is through.
Adjust the cannula tubing to a suitable position.
3. Hold the adapter in position and then zip up the strap.
4. Make sure the zipper is facing outwards then clip the strap
to the carrying case and attach the cannula to the device.

14
Operating your device
Make sure that the device is in a well-ventilated location. The
fan inlet and outlet vents must not be obstructed.
Check that the batteries are fully charged before running the
device.
Starting therapy
1. Attach the nasal cannula to the oxygen port.
2. Press and hold the power button to start therapy.
3. Confirm the prescribed device setting as established in
Setting up your prescribed device setting (see page 9).
4. Position the nasal cannula on your face and breathe
normally. Verify that the symbol appears on the
display screen.
Notes:
•When the device detects inhalation, oxygen is supplied
through the cannula. The duration and size of the pulse is
dependent upon the device setting selected.
•Allow 3 minutes for the device to reach stated
performance. If used routinely, the last used device setting
will appear on the display screen after powering on.
•The device utilizes PULSE-WAVE which delivers oxygen
corresponding to your inhalation rate. This type of delivery
is very gentle so you may not feel the bolus of oxygen.
The symbol will flash next to the device setting on
the display screen every time a breath is detected.
•After starting therapy, check for the symbol
appearing briefly on the screen when you breathe in. You
should also wait for approximately 5 minutes to make sure
no alarms turn on.

English 15
•The cannula may reach a contact temperature of 107.6°F
(42°C) when ambient conditions are at 104°F (40°C).
Therapy can continue; however, if you feel discomfort or
irritation from contact with the cannula, temporarily
remove the cannula or relocate to a cooler location.
WARNINGS
•Some respiratory efforts of the patient might not
trigger the device.
•Proper placement and positioning of the cannula is
critical to the consistent operation of this equipment.
•To ensure correct oxygen therapy is delivered, the
device must be used only after one or more settings
have been prescribed for you at your specific activity
level, and must only be used with the specific
combination of parts and accessories used to
determine these settings.
•The prescribed device setting may need to be
periodically reassessed for effectiveness.
Turning on/off the device
Press and hold the Power button until you hear an audible
tone.
Note: The audible tone confirms that the alarm system is
functioning and should be heard every time the device is
turned on or off.
Verifying normal operation
During normal operation, the control panel and display screen
should appear as described below:
Operation Description
Active or Rest Mode
activated
The user mode setting will appear next to the
selected device setting:
•Active Mode—breath rate is typical for an
active user.
•Rest Mode—breath rate is slower than the
normal active breath rate.
Alarm muted The audible alarm signal will be muted and the
Mute symbol will display on screen. The
yellow alarm LED will remain illuminated on the
Control panel and the alarm message will remain on
the display.

16
Operation Description
Breath detected The symbol will flash as you breathe. This
indicates that the device is delivering a bolus of
oxygen with each inhaled breath.
If you stop breathing through the nasal cannula
(mouth breathing), the symbol will flash on
the display screen and the device will begin
delivering boluses of oxygen automatically. After 75
seconds, the device will activate a No Breath
Detected alarm and will continue to automatically
provide boluses of oxygen until normal breathing
resumes.
When the device detects normal breathing, the No
Breath Detected alarm will cease and the
symbol will display indicating detection of your
breath.
Charging status The following messages will appear on the display
screen depending on the battery charging status:
•Charging Internal—internal battery is
charging.
•Charging External— external battery is
charging.
•Running Internal—internal battery is in use.
•Running External—external battery is in use.
Note: By design, the device will preserve the
internal battery charge as long as possible. This
means that the external battery will be out of
charge before the internal battery and the internal
battery will charge before the external battery when
connected to power.
Power interruption The device will emit a two-second audible tone if
the AC or DC power is interrupted or intentionally
unplugged and the device will automatically switch
to battery operation.
Powered on The power indicator is illuminated green and the
display screen is on when the device is powered on.
Setting selected 1, 2, 3or 4will appear under Setting on the display
screen when a setting is selected.

English 17
Understanding alarm indicators
The device will activate an alarm to alert you to conditions
that may require your attention or action. All the alarms on the
device are classified as low priority.
Each alarm will trigger:
•a repeating audible tone
•an illuminated yellow Alarm indicator on the control panel
•an alarm message displayed in the Message field unless
noted differently below:
Alarm Description
Low battery This alarm is triggered when the internal battery
has approximately a 5% charge remaining.
Critical low battery When the internal battery has a <5% charge
remaining, a countdown timer of the final 180
seconds of battery life will appear on the display
screen and an X will appear over the INT battery
bar.
Low oxygen purity This alarm is triggered when the delivered oxygen
concentration is lower than specified.
No breath detected This alarm is triggered by a kinked cannula,
unattached cannula or shallow or mouth breathing.
High temperature This alarm is triggered when:
•the internal temperature of the device exceeds
149°F (65°C). The device will power off and the
audible alarm will cease. The yellow alarm
indicator and the alarm message will remain
until the device sufficiently cools.
•the temperature of the compressor exceeds
167°F (75°C). The device will continue running,
but the yellow alarm indicator and the alarm
message will remain until the device sufficiently
cools.

18
Caring for your device
The device was designed to minimize the amount of required
routine maintenance. There are no user repairable parts.
Aside from the preventative maintenance outlined below, all
other maintenance must be performed by qualified service
personnel.
All maintenance must be performed when the device is
powered off.
Cleaning the fan vents
Make sure that there is no build-up of lint, hair or other
materials that could obstruct the flow of air into the device’s
fan vents. At least once a month, inspect the grille of the
vents, and if it appears dirty, use a dry cotton swab to clean it.
Cleaning the device and carrying case
If it is necessary to clean the device or the carrying case, use
only warm water and a mild liquid dish detergent. Dampen a
cloth in the solution and carefully wipe the outside surfaces of
the device and the carrying case. Allow sufficient drying time
before placing the device back in the carrying case.
CAUTION
Do not use alcohol, solvents, polishes or any oily
substances as they may be flammable. Do not stick cotton
swab into vent while the device or fan is running as it may
cause damage.
Storing the device
Store the device in a cool, dry place where it will remain clean
and dry. This will help extend the device service life.
Inspecting the nasal cannula
Inspect the nasal cannula and make sure there are no kinks or
obstructions. Nasal cannula cannot be used between other
patients.
WARNING
Clean and replace the cannula and tubing as instructed by
the manufacturer and your equipment provider.
Extending the service life of the rechargeable
batteries
The device uses lithium-ion rechargeable batteries.
•Recharge the batteries as often as possible.
•Avoid leaving the device or external battery in a hot
environment, especially if exposed to direct sunlight.
•For long term storage of the external battery, it is
recommended that a charge of approximately 40% be
maintained on the battery.