ResMed HumidAire 2i User manual

English
HumidAire 2i™
User Manual
English
ResMed Ltd (Manufacturer) 1 Elizabeth MacArthur Drive Bella Vista NSW 2153 Australia
ResMed Corp (US Designated Agent) 14040 Danielson Street Poway CA 92064-6857 USA
ResMed (UK) Ltd (EU Authorized Representative) 96 Milton Park Abingdon Oxfordshire OX14 4RY UK
ResMed Offices Australia, Austria, Belgium, Brazil, China, Finland, France, Germany, Greece, Hong Kong, India, Ireland, Italy,
Japan, Malaysia, Mexico, Netherlands, New Zealand, Norway, Portugal, Singapore, South Africa, Spain, Sweden, Switzerland,
UK, USA (see www.resmed.com for contact details).
Patents pending.
Protected by design registrations: AU 147335, CH 128.711, CH 128.712, DE 40202008, DE 40201723, ES 153516, ES 153518,
FR 021407, GB 3001820, GB 3001821, JP 1164266, JP 1164267, SE 75598, SE 75715, US D476077,
US D477868. Other designs pending
VPAP and HumidAire are trademarks of ResMed Ltd and are registered in U.S. Patent and Trademark Office.
© 2008 ResMed Ltd.

Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Definitions 5
User/Owner Responsibility 5
Medical Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Intended Use 6
Contraindications 6
Warnings and Cautions 6
The HumidAire 2i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
HumidAire 2i Components 8
Preparing For Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Setting Up the HumidAire 2i 9
Operating Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Starting Treatment 13
Stopping Treatment 15
Helpful Hints 16
Cleaning and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Servicing 21
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Humidifier Performance 25
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

1Introduction
English
Introduction
The ResMed HumidAire 2i™ is designed to humidify the air delivered to the
airway during continuous positive airway pressure (CPAP), automatic positive
airway pressure (APAP), and bilevel therapy. Nasal congestion or dryness of the
nose, mouth or throat may be experienced during therapy. These symptoms are
caused by dry climates, cold air temperatures, the airflow delivered from the
CPAP, APAP, or bilevel system and mouth leak. Moist air helps relieve
symptoms of dryness and can make therapy more comfortable. The
HumidAire 2i is designed to form a single heated humidification unit when
attached to a CPAP, APAP, or bilevel unit.
Definitions
This manual contains special terms and icons that appear in the margins to draw
your attention to specific and important information.
!
WARNING
Alerts you to possible injury.
!
CAUTION
Explains special measures for the safe and effective use of the device.
Note: Is an informative or helpful note.
User/Owner Responsibility
The user or owner of this system shall have sole responsibility and liability for any
injury to persons or damage to property resulting from:
•operation which is not in accordance with the operating instructions supplied
•maintenance or modifications carried out unless in accordance with
authorised instructions and by authorised persons.
Please read this manual carefully before use.

2
Medical Information
Intended Use
The HumidAire 2i is indicated for the humidification of the air delivered from a
ResMed compatible CPAP therapy device. Refer to the relevant device manual
for information regarding its compatibility with the HumidAire 2i.
The HumidAire 2i is intended for single patient re-use in the home environment
and multi-patient re-use in a hospital/institutional environment. Contact your
equipment supplier or ResMed office if you require further information.
The HumidAire 2i is for use only as recommended by a physician.
!
CAUTION (USA ONLY)
Federal law restricts this device to sale by or on the order of a physician.
Contraindications
The HumidAire 2i is contraindicated for use with patients whose supraglottic
airways have been bypassed. Please also refer to the relevant system manual for
contraindications associated with CPAP, APAP, and bilevel therapy.
Warnings and Cautions
The following are general warnings and cautions. Specific warnings and cautions
appear next to the relevant instructions in the manual.
!
WARNINGS
•Use the HumidAire 2i only for its intended use as described in this manual.
•The HumidAire 2i is designed only for use with specific ResMed CPAP, APAP,
or bilevel devices. Do not use the HumidAire 2i with any other devices.
•The HumidAire 2i should only be used with delivery tubes or accessories
specified in this manual. Connection of other delivery tubes or accessories
could result in injury, or damage to the device.
•The HumidAire 2i tubing is for single-patient use and must not be re-used on
another person. This is to avoid the risk of cross-infection.
•Always place the HumidAire 2i device lower than the level of the patient. If it
is placed at or above the level of the patient, heated water may flow down
the air tubing and into the mask.
•Do not attempt to dismantle the HumidAire 2i docking station. There are no
user-serviceable parts inside. Repairs and internal servicing should only be
performed by an authorised service agent.
•Take care when handling the HumidAire 2i. The water in the water chamber
may be hot.
•If liquids are inadvertently spilled on the HumidAire 2i docking station, unplug
the CPAP, APAP, or bilevel device from the power outlet and allow the docking
station to drain and dry before using.

3Medical Information
English
•The water chamber should not be connected to the docking station when
transporting the HumidAire 2i in the carry bag. Place the water chamber in a
separate compartment in the carry bag.
•Make sure that the water chamber is empty and thoroughly dried before
transporting the HumidAire 2i.
•Do not operate the HumidAire 2i if the CPAP, APAP, or bilevel device has a
damaged power cord or plug.
•There exists the possibility that if the device is placed above the level of the
patient and is tipped over, or if the tubing is filled with condensate, the mask
might fill with water. The HumidAire 2i should therefore be used with caution
in patients who are unable to guard their airway, or are unable to pull the
mask off, for example following a stroke. Attention should be given to the
relative risks and benefits.
•Do not operate the HumidAire 2i if it is not working properly or if any part of it
has been dropped or damaged.
•Keep the power cord away from heated surfaces.
•Do not drop or insert any object into any opening or tubes.
•Do not use the HumidAire 2i in the presence of flammable or explosive
materials.

4
The HumidAire 2i
HumidAire 2i Components
Figure 1: Components of the HumidAire 2i
Figure 2: Water chamber components
Docking
station
Heater plate
Water
chamber
Air outlet
Control dial
Heater plate light
Water chamber lid
Seal
Water chamber base
Tub plate
O-ring
Side catch
Cross-member

5Preparing For Use
English
Preparing For Use
Setting Up the HumidAire 2i
!
WARNING
Make sure that the CPAP, APAP, or bilevel device is switched off at the
power outlet before connecting the HumidAire 2i.
1Remove the front cap from the device. To do this:
1. Press the latch underneath the front cap.
2. While pressing the latch, lift and pull the front cap away from the device. The
front cap should detach from the bottom and right side. The front cap should
still be attached to the left side.
3. Hold the device down with your left hand. With your right hand, firmly pull
the right side of the front cap out and then up until the whole front cap
comes off.
Notes
•To replace the front cap:
a. Align the air outlet connector inside the front cap to the air outlet on the
device.
b. Push the front cap firmly onto the device until it clicks into place.
•Remember to take the front cap with you when travelling, in case you
need to use your CPAP, APAP, or bilevel device without a humidifier.
Front cap
Latch
Right side
Left side

6
2Separate the HumidAire 2i water chamber from the docking station. To do this,
lift the latch at the bottom of the water chamber and pull the water chamber
away from the docking station.
3Slide the humidifier docking station (with the water chamber detached) onto the
device until it clicks into place.
Notes
•The images in this manual are for illustrative purposes only and may look
different from your model.
•Under normal operation, there is no need to remove the HumidAire 2i
docking station once it is attached to the CPAP, APAP, or bilevel device. If you
need to remove it, press the latch underneath the docking station and pull it
away from the device.
•When removing the docking station, ensure that the water chamber is
removed first.
4Insert the power cord into the socket at the rear of the device. Plug the other end
of the power cord into a power outlet.
Docking station
Power
cord
To
power
outlet

7Preparing For Use
English
!
WARNING
•Make sure that the CPAP, APAP, or bilevel device is switched off at the
power outlet before connecting the HumidAire 2i.
•Make sure the power cord and plug are in good condition and the
equipment is not damaged.
5Place the device on a firm, flat surface near your bed. Make sure that it is placed
at a level lower than your sleeping position so that any excess condensation
drains back into the water chamber.
!
CAUTION
Be careful not to place the device where it can be bumped into and knocked
over.
!
WARNING
Do not fill the water chamber while it is attached to the docking station and
the CPAP, APAP or bilevel device.
6Turn the water chamber so that the air outlet points up. Over a sink, carefully fill
the water chamber through the air outlet up to the maximum water level mark
shown on the side of the water chamber base.
The HumidAire 2i should be filled with fresh water before use. Always ensure
that the water chamber is clean. See “Cleaning and Maintenance” on page 13.
!
WARNING
Do not overfill the water chamber, as water may enter the CPAP, APAP, or
bilevel device and air tubing.
!
CAUTION
Do not use additives, in particular aromatic additives (eg, scented oils and
perfumes). They may reduce the humidification output of the device and/or
cause deterioration of the water chamber materials.
Air outlet
Maximum
water level
mark

8
7Carefully, slide and push the filled water chamber onto the humidifier docking
station (already attached to the CPAP, APAP, or bilevel device) until it clicks down
into place. Ensure that the water chamber is fully engaged.
!
WARNING
•Always connect the HumidAire 2i docking station before connecting the
water chamber.
•To prevent water from entering the CPAP, APAP, or bilevel device, only
move or transport it with the HumidAire 2i attached if the water chamber
is empty and thoroughly dry.
8Connect one end of the air tubing firmly onto the air outlet on the water chamber
and the other end to the mask system.
The HumidAire 2i is now ready for use. To start treatment, see “Operating
Instructions” on page 9.
Water
chamber
Docking
station
Air outlet
Air tubing
Mask system

9Operating Instructions
English
Operating Instructions
Starting Treatment
The HumidAire 2i should be filled with fresh water and attached to the CPAP,
APAP, or bilevel device, with the air tubing and mask system connected. See
“Setting Up the HumidAire 2i” on page 5.
1Switch on the power at the power outlet. Switch the main power switch at the
back of the device ON.
When the device is turned on a prompt for the Warm-Up feature will appear (not
available on all models).
The Warm-Up Feature is automatically displayed when the HumidAire 2i is
connected to the CPAP, APAP, or bilevel device. When activated, this feature
allows the water to warm up before you start treatment.
Note: The device automatically detects the presence or absence of the
HumidAire 2i. There is no need to enter the menus to change the humidifier
setting.
2Pre-heat the water before starting treatment by activating the Warm-Up Feature.
Skip this step if you do not wish to use the Warm-Up feature.
Warm-Up Feature (not available in all models)
The Warm-Up feature allows you to pre-heat the water in the humidifier prior to
starting treatment. The result is that the air is comfortably humidified at the start
of treatment.
You can begin using the device at any time during the humidifier 'Warm-Up'
period. The 'Warm-Up' feature will automatically turn off after 30 minutes if
treatment has not started.
Main
power
switch
AUTOSET SPIRIT
menu warmup

10
To activate the Warm-Up Feature:
1. Depending on your model, press the Right (warmup) key or the Enter key on
the control panel.
2. The Warming screen (which may vary in appearance according to your
model) will be displayed to indicate that the Warm-Up feature is activated.
3. While the HumidAire 2i is in Warm-Up mode you can:
•Start treatment at any time by pressing the Front or the Enter key
(depending on your model).
•Access the menus by pressing the Left (menu) key. For the
VPAP™ III ST-A with QuickNav™, use the Up/Down and Enter keys to
access the menus.
•Stop the Warm-Up feature at any time by pressing the Right (exit) key
(this does not apply to the VPAP III ST-A with QuickNav).
3Turn the humidity control dial to the desired setting. The control dial is labelled
as shown in the diagram below. A setting of 1 provides minimum humidification,
and a setting of 6 delivers maximum humidification. The setting marked with a
switches heated humidification off.
Initially, set the control dial to 3. If necessary adjust the control dial up or down
to find the most comfortable and effective setting. You can adjust the humidity
setting at any time.
Your aim is to have moist air delivered at your mask while avoiding condensation
in the air tubing. Your ideal setting will depend on the temperature and humidity
of the surrounding air.
See “Helpful Hints” on page 12 for further tips on the correct humidity setting.
AUTOSET SPIRIT
menu warmup
Right key
(warmup)
Enter key
WARMING
menu exit

11Operating Instructions
English
4Fit your mask as described in the mask user instructions.
!
WARNING
Before starting therapy ensure that you are wearing the mask and that the
mask and air tubing are fitted correctly.
5Press the Front key or the Enter key (depending on your model) on the control
panel. Alternately, if the SmartStart function is enabled, simply breathe into the
mask. Air should begin to flow from the device.
Note: During operation, the heater plate light illuminates periodically to indicate
that the heating element is active. The HumidAire 2i has a rapid heating element
which allows very short heating times. Do not be concerned if the light only
flashes on very briefly.
6Lie down and arrange the air tubing so that it is free to move if you turn in your
sleep.
!
WARNING
Do not leave long lengths of air tubing around the top of your bed. It could
twist around your head or neck while you are sleeping.
Stopping Treatment
To stop treatment at any time, remove your mask and press the Front or the
Enter key (depending on your model). Alternately, if the SmartStart function is
enabled, simply remove your mask and treatment will end.
You may notice that the device continues to blow air gently after you have
pressed the Front or the Enter key (depending on your model). This continues
for up to one hour to assist cooling of the heater plate. However, you can switch
off the power at any time and allow the heater plate to cool without airflow.
Heater plate
light
Front key
Heater
plate light

12
Helpful Hints
Condensation in the Mask or Air Tubing
You may experience excessive condensation in the mask or air tubing. This may
occur seasonally, particularly when the weather is cool. Turn the humidity control
dial down until the condensation decreases.
Another cause of condensation is air blowing directly on the air tubing, for
example from fans and air conditioning units. This causes the humidified air to
quickly lose temperature, resulting in increased condensation. Avoid this
situation when possible. Placing the air tubing under the bed covers with you
may help prevent condensation.
We recommend that you arrange the device so that any excess condensation
drains back into the water chamber.
Symptoms of Dryness Still Present
If you still experience symptoms of dryness, then your humidity setting may be
set too low to be effective. Gradually turn the humidity control dial up over a few
nights until the symptoms disappear.
If you are still experiencing symptoms of dryness, even after increasing the
humidity setting, you may be breathing through your mouth. Mouth breathing or
mouth leaks cause drying and irritation of the upper airway. If this is a problem,
a full face mask or chin strap may help. Consult your clinician or equipment
supplier for details.
Nasal Infection or Illness
If you have a cold or nasal infection, be sure to clean the HumidAire 2i thoroughly
each day. Do not put aromatic oils or decongestants into the water chamber.
!
CAUTION
Do not use additives, in particular aromatic additives (eg, scented oils and
perfumes). They may reduce the humidification output of the device and/or
cause deterioration of the water chamber materials.
Scaly Mineral Deposits
You may notice a white powder or deposits in the water chamber base. These
are mineral deposits from the tap water. To remove these deposits, rub the
water chamber base gently using a mild washing detergent.
To prevent these deposits forming, fill the water chamber with demineralised
water.
Seasonal Changes
You may have to adjust your humidity setting from season to season, or if you
travel to a different climate.

13Cleaning and Maintenance
English
Cleaning and Maintenance
You should regularly carry out the cleaning and maintenance described in this
section.
Cleaning the HumidAire 2i between patients
The HumidAire 2i should be disinfected when used between patients. Detailed
disinfection instructions are available from the ResMed website
www.resmed.com and must be consulted before re-use.
Note: The HumidAire 2i is available in both a clear polycarbonate (PC) version as
well as a smoky gray polysulphone (UDEL) version. Only the clear polycarbonate
(PC) version is able to be disinfected.
Cleaning the HumidAire 2i for home users
!
WARNING
Beware of electrocution. Do not immerse the device or power cord in water.
Always unplug the device before cleaning and be sure that it is dry before
plugging back in.
1Turn the main power switch at the back of the device to OFF, and unplug the
power cord from the power outlet.
2Allow 10 minutes for the heater plate and any excess water to cool.
3Remove the water chamber. To do this, lift the latch at the bottom of the water
chamber and pull the water chamber away from the docking station.
!
WARNING
•Take care when handling the HumidAire 2i. The water in the water
chamber may be hot.
•Do not touch the tub plate at the base of the water chamber while
removing the water chamber from the docking station. It may be hot.
4Discard any excess water by turning the water chamber upside down, allowing
the water to drain out of the air outlet.

14
5Disassembling the Water Chamber
1. To open the side catches pull out from the lower edge.
2. Hold the water chamber as shown below:
3. Separate the water chamber by pulling the two halves apart. Use your thumb
to pull down on the front tab.
4. Remove the seal by peeling it away from the inside of the lid.
5. Remove the cross-member from the water chamber base.
6Discard any remaining water.
The tub plate does not need to be removed from the water chamber base. If
removed, replace the tub plate by:
1. Turning the water chamber base upside down.
Side catch
Front tab
Front tab
Seal
Lid
Base
Cross-member

15Cleaning and Maintenance
English
2. As shown below, position the tub plate so that the open side is facing down.
Then firmly press the tub plate down into the water chamber.
Note: The tub plate will not fit into the water chamber if it is facing up. Before
fitting the tub plate, make sure the O-ring is fitted snugly inside the groove of
the tub plate.
7Cleaning
WATER CHAMBER
Wash the lid, seal, cross-member and base in warm water using a mild detergent
or in a dishwasher. Rinse them thoroughly with clean water and allow them to
dry away from direct sunlight. Do this daily or after each use. Inspect the water
chamber for wear and deterioration. Replace any damaged parts.
!
CAUTION
Do not use any of the following to clean any part of the HumidAire 2i. These
solutions may cause damage and reduce the life of the product.
•bleach, chlorine-, alcohol-, or ammonia based solutions
•moisturizing, antibacterial, or glycerine based soaps
•water softening and descaling agents
If using a dishwasher, avoid heavy duty or high temperature cycles (greater
than 158°F). Do not use strongly alkaline detergents and rinse aids.
DOCKING STATION
Wipe the outside of the docking station with a damp cloth. Do this periodically.
8Reassembling the Water Chamber
When all the water chamber parts are clean and dry, reassemble the water
chamber:
1. Place the cross-member on its supports inside the water chamber base.
Tu b p l a t e
Supports
Supports
Notches

16
2. Fit the seal onto the rim of the water chamber base. Press along the edge to
ensure that the seal is fitted properly.
3. Fit the lid onto the water chamber base. Press the lid and base firmly
together to close.
4. To close the side catches see the illustrations below,
Note:If the side catches become detached from the water chamber base,
reattach them as shown.
Seal
Rim
Lid

17Cleaning and Maintenance
English
The side catches consist of two parts. If they become separated clip them back
together as shown. Insert the smaller end (a) of the hinge (b) first, hold it flat,
and press firmly into place.
Servicing
This product (HumidAire 2i) should be inspected by an authorized ResMed
Service Center 5 years from the date of manufacture. Prior to this, the device is
intended to provide safe and reliable operation provided that it is operated and
maintained in accordance with the instructions provided by ResMed. Applicable
ResMed warranty details are provided with the device at the time of original
supply. Of course, as with all electrical devices, if any irregularity becomes
apparent, you should exercise caution and have the device inspected by an
Authorized ResMed Service Center.
a
b

18
Troubleshooting
If there is a problem, try the following suggestions. If the problem cannot be
solved, contact your equipment supplier or ResMed. Do not attempt to open the
unit.
!
WARNING
Service and repair should only be performed by an authorised service
agent. Under no circumstances should you attempt to service or repair the
unit yourself.
Problem Possible Cause Solution
Device not working
(no display on LCD
screen)
Power cord is not plugged
in properly.
Device not switched on.
Faulty power outlet.
Check that the power cord is plugged
firmly into the power outlet.
Check that the switch at the back of
the device is in the ON position.
Try another power outlet.
Heater plate light not
lighting up
The Front key on the
device has not been
pressed.
Control dial is in the OFF
position.
Press the Front key on the
device to activate the heater plate.
Turn the control dial up from the OFF
position.
Leaking water
chamber
The water chamber may
be damaged or cracked.
The lid may not be on
correctly.
Water chamber seal may
be twisted.
Side catches are not
engaged properly.
The tub plate is incorrectly
fitted.
Contact your supplier for a
replacement.
Press the lid down firmly.
Make sure the seal is seated properly
inside the water chamber.
Make sure the two side catches are
engaged properly.
Make sure the tub plate is fitted
correctly.