™
H4i
HEATED HUMIDIFIER
User Guide
English
H4i™
HEATED HUMIDIFIER
User Guide
English
Manufacturer:
ResMed Ltd 1 Elizabeth Macarthur Drive Bella Vista NSW 2153 Australia.
Distributed by:
ResMed Corp 9001 Spectrum Center Boulevard San Diego CA 92123 USA.
ResMed (UK) Ltd 96 Milton Park Abingdon Oxfordshire OX14 4RY UK.
H4i, S8, Stellar and VPAP are trademarks of ResMed Ltd. Stellar and VPAP are registered in U.S. Patent and Trademark
Office.
© 2013 ResMed Ltd. 248672/1 2013-02
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Indications for use
Contraindications
1
1
Components of your H4i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Setting up your H4i for use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Preparation
System setup
Filling the water chamber
Detaching your H4i
1
2
3
3
Starting and stopping treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Warming your H4i with the VPAP or S8 Series
Warming your H4i with the Stellar
Starting your treatment
4
4
4
5
Stopping your treatment
Cleaning and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Disassembling the H4i cleanable water chamber
Cleaning your H4i
Reassembling the H4i cleanable water chamber
Reassembling your H4i
Servicing
5
6
7
8
8
8
Frequently asked questions
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Humidifier performance
Symbols which appear on the device
10
11
General warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Limited warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Introduction
The H4i™ is designed to moisten the air delivered to your airway during Positive
Airway Pressure (PAP) therapy.
Indications for use
The H4i is indicated for humidification of the air delivered from a ResMed compatible
CPAP, bilevel and non-invasive ventilation device. The H4i is for use only as
recommended by a physician.
Contraindications
The H4i is contraindicated for use with patients whose upper (supraglottic) airway has
been bypassed. Please also refer to the relevant system manual for contraindications
associated with PAP therapy.
Components of your H4i
Accessories:
Cover
Air outlet
•
•
•
H4i Water Chamber
H4i Cleanable Water Chamber
ResMed Tubing Wrap
Cover seal
Connector seal
Control dial
Indicator light
Docking station
Water chamber
Spill guard
Heater plate
Latch
Setting up your H4i for use
Preparation
(b)
(a)
Remove the connector plug from your flow generator (a) and attach it to the back of
the docking station (b).
Introduction
1
System setup
3
2
1
5
4
1
Align your H4i with your flow generator and push them together until they click into
place.
Connect the power cord to the socket on the rear of your flow generator.
2
3
Plug the other end of the power cord into the power outlet.
Place the combined unit on a firm, level surface near your bed at a level lower than
your sleeping position. Ensure the surface is not sensitive to heat and/or moisture, or
use a protective mat.
Connect one end of the air tubing firmly onto the air outlet.
4
5
Connect the assembled mask system to the free end of air tubing.
WARNING
!
•
•
•
•
Make sure your flow generator is switched off at the power outlet before
connecting the H4i.
The H4i docking station should only be connected or disconnected when the
water chamber is empty.
Water must be prevented from entering your flow generator. Do not
transport the flow generator with the H4i attached.
The H4i is contraindicated for invasive use. An external humidifier approved
for invasive use is recommended according to EN ISO 8185.
2
Filling the water chamber
1
2
3
1
2
3
Open the cover.
Remove the water chamber.
Fill with fresh, clean water up to or below the maximum water level mark.
Note: The water chamber must be removed from the H4i before it is filled or water
may enter the flow generator. The spill guard must also be in place.
4
Return the water chamber to the docking station.
Note: Ensure that no water is collected between the heater plate and the water
chamber.
5
Close the cover ensuring that it clicks into place.
CAUTION
•
!
Do not overfill the water chamber as water may enter the flow generator and
air tubing.
•
Do not use any additives (eg, scented oils and perfumes). They may reduce
the humidification output of the H4i and/or cause deterioration of the water
chamber materials.
Detaching your H4i
3
4
1
2
1
Unplug the power cord from the power outlet.
WARNING
!
Take care when handling your H4i. The water and the water chamber base may
both be hot. Allow 10 minutes for the heater plate and any excess water to cool.
Remove the water chamber from the docking station.
2
3
Press the large silver button located midway underneath the docking station.
Setting up your H4i for use
3
4
Pull the H4i and flow generator apart.
Note: Re-attach the connector plug firmly to your flow generator.
Starting and stopping treatment
Warming your H4i with the VPAP or S8 Series
The Warm-Up feature (not available on all ResMed PAP devices) is used to pre-heat
the water before starting treatment. Skip this step if you want to start immediately.
To start the Warm-Up feature:
1
2
3
Select warmup by pressing
on the control panel.
The WARMING screen will appear to indicate that the Warm-Up feature is activated.
While your H4i is in Warm-Up mode you can:
•
•
•
Start treatment at any time by pressing
Access the menus by pressing
.
.
Stop the Warm-Up feature at any time by pressing
on all devices.)
. (This may not apply
The Warm-Up feature will automatically turn off after 30 minutes if treatment has not
started.
Warming your H4i with the Stellar
Your H4i will be automatically detected when the Stellar is turned on. The treatment
screen will give you the option to start warming up the humidifier prior to starting
treatment. If the humidifier is heating, the related symbol is displayed at the top of
the LCD screen.
Note: The H4i can only be used when the device is connected to mains power
supply.
CAUTION
!
H4i cannot be used for treatment pressures exceeding 35 cm H O.
2
Starting your treatment
1
Turn the humidity control dial to three ( ). You can adjust the control dial up or down
at any time to find the setting that is most comfortable for you. The setting
switches heated humidification off and delivers minimum humidification while a
setting of six ( ) delivers maximum humidification.
Note: The ResMed Tubing Wrap is designed to enhance comfort by maximising
heat retention along the air tube.
Start treatment as described in your device user guide.
2
3
Note: The H4i is thermostatically controlled to maintain a constant temperature. The
indicator light will brighten to indicate when the device is actively heating and dim
when it has reached its set temperature.
Lie down and arrange the tubing so that it moves freely when you turn in your sleep.
4
WARNING
!
Do not leave an excessive length of air tubing around the top of your bed. It
could twist around your head or neck while you are sleeping.
Stopping your treatment
To stop your treatment, refer to your device user guide.
Note: In order to assist the heater plate in cooling, some flow generators continue to
blow air gently for up to an hour after treatment has stopped. However, you can
unplug the device from the power outlet at any time and allow the heater plate to
cool without airflow.
Cleaning and maintenance
You should regularly carry out cleaning and maintenance of the water chamber, cover
and cover seal as described in this section.
WARNING
•
!
Beware of electrocution. Do not immerse your flow generator, docking
station or power cord in water. Always unplug the device before cleaning
and be sure that it is dry before plugging it back in.
•
Take care when handling your H4i. The water and the water chamber base
may both be hot. Allow 10 minutes for the heater plate and any excess water
to cool.
Disassembling the H4i cleanable water chamber
3
5
1
2
4
1
Remove the spill guard by pushing up from inside the air inlet and pulling it away from
the water chamber.
2
3
Discard any excess water from the water chamber.
Turn the water chamber upside down. Using the side tabs, disengage the latch by
pushing the latch up and away.
4
5
Remove the tub plate.
Remove the tub plate seal.
Note: Only the H4i Cleanable Water Chamber can be disassembled/reassembled.
Cleaning and maintenance
5
Cleaning your H4i
Water chamber
Daily
1
2
3
4
Wash the water chamber, spill guard, tub plate and tub plate seal in warm water,
using a mild detergent. Use the yellow cleaning plug to assist in the cleaning process
(see steps 1 to 4). Rinse thoroughly in clean water and allow them to dry away from
direct sunlight.
Weekly
The disassembled cleanable water chamber, spill guard, tub plate and tub plate seal
may be washed in a dishwasher on the delicate or glassware cycle (top shelf only).
Note: Not applicable to the H4i Water Chamber.
Inspect the water chamber for wear and deterioration. Replace the water chamber if
any component has cracked, become cloudy or pitted. Replace immediately if there
is any leaking from the water chamber.
White powder or deposits in the water chamber can be cleaned using a solution of
one part vinegar to 10 parts water, as follows:
Fill the cleaning plug to the rim with vinegar and pour into empty water chamber.
1
2
Add clean water to the water chamber until the solution reaches the maximum water
level mark.
Let the solution soak for 10 minutes.
3
4
Discard the solution and rinse the water chamber with clean water.
6
Cover and cover seal
1
2
Remove the cover by gently flexing one cover arm away and up from the docking
station until the cover detaches completely.
1
2
3
Peel the cover seal away from the cover.
Inspect the cover and cover seal weekly for wear and deterioration. Replace any
damaged parts. When required, wash the cover and cover seal in warm water, using
a mild detergent. Rinse them thoroughly with clean water and allow it to dry away
from direct sunlight.
Docking station
Periodically wipe the outside of the docking station (including the connector seal) with
a damp cloth.
CAUTION
!
Do not use any of the following to clean any part of the H4i as these solutions
may cause damage and reduce the life of the product:
•
•
•
bleach, chlorine-, alcohol- or ammonia-based solutions
moisturising, antibacterial or glycerine based soaps
water softening and unapproved descaling agents.
Heater plate
Do not allow water to collect on the heater plate. Wipe it with a clean cloth if
necessary.
Reassembling the H4i cleanable water chamber
1
3
4
2
1
2
3
Refit the tub plate seal into its groove on the cleanable water chamber.
Reinsert the tub plate by slotting its feet into the catches.
Reassemble the catch by lifting up and over the water chamber and then pushing
down to lock into place.
Note: Only the H4i Cleanable Water Chamber can be disassembled/reassembled.
Cleaning and maintenance
7
4
Reinsert the spill guard into the water chamber recess and push down to fit firmly into
place.
Reassembling your H4i
Reassemble the parts when they are clean and dry.
1
2
3
1
2
Align the cover seal to the guides on the cover and press along the edges to ensure
it is fitted properly.
Put one cover arm into its pivot point on the docking station and gently flex the other
arm into its corresponding point. The cover should be able to open and close freely
while securely attached to the docking station.
Replace the water chamber in the humidifier docking station.
3
Servicing
The H4i should be inspected by an authorised ResMed Service Centre five 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. Warranty details are provided with the device at the
time of original supply. As with all electrical devices, if any irregularity becomes
apparent, you should exercise caution and have the device inspected by an authorised
ResMed Service Centre.
Frequently asked questions
Question
Answer
Why is there
condensation in
my mask and/or
air tubing?
Excessive condensation in your mask or air tubing may occur when the room
temperature is low. To prevent condensation, turn the control dial down to a
lower setting. You may need to adjust your humidity setting from season to
season. The use of a ResMed Tubing Wrap can help reduce the effects of
condensation.
Do I have to use
distilled water
in the water
chamber?
Using distilled water will maximise the life of the water chamber and reduce
mineral deposits.
What if I still
have symptoms
of dryness?
If you have symptoms of dryness, then your humidity setting may be set too
low to be effective. Turn the humidity control dial up.
If you are still experiencing symptoms of dryness, 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.
8
Troubleshooting
If there is a problem, try the following suggestions. If the problem cannot be solved,
contact your equipment supplier or ResMed. Do not open the unit.
WARNING
!
Service and repair should only be performed by an authorised service agent.
Problem
Possible cause
Solution
Device not working
(no display on LCD
screen and/or
Power cord is not plugged in
properly.
Check that the power cord is plugged
firmly into the power outlet and the switch
(if available) is on at the outlet.
indicator light not
lighting up)
Faulty power outlet.
Try another power outlet.
Flow generator and docking station
not connected correctly.
Check that the docking station is securely
attached to the flow generator.
Indicator light is
permanently dull and/
or air does not feel
warm
H4i reflector is dirty.
Clean the reflector with a damp cloth.
Leaking water
chamber
The water chamber may be
damaged or cracked.
Contact your supplier for a replacement.
Make sure the tub plate is fitted correctly.
The tub plate is not attached
correctly (not applicable to the H4i
Water Chamber).
No/low air flow
The air tubing is not connected
properly.
Connect the air tubing as described in
“Setting up your H4i for use” on page 1.
The air tubing is blocked, pinched
or punctured.
Unblock or free the air tubing. Check the
air tubing for punctures.
The flow generator is not working
correctly.
See the Troubleshooting section in the
flow generator manual.
The cover is not latched correctly.
Make sure the cover is latched onto the
docking station correctly.
The cover seal is not fitted
correctly.
Make sure the cover seal is facing the right
way up and fitted securely.
Water splashing on
your face
The water chamber is overfilled.
Empty some water from the water
chamber.
Condensation is forming in the air
tube and mask.
Turn the control dial down.
Use the ResMed Tubing Wrap.
Troubleshooting
9
Technical specifications
Maximum heater plate temperature
Temperature cut-out
Maximum gas temperature
Dimensions (H x W x D)
Weight
85°C
93°C
41°C
Docking station and water chamber: 130 mm x 170 mm x 212 mm
Docking station and unfilled water chamber: 786 g
To maximum fill line: 390 mL
Water capacity
Power supply
100-240V 50/60Hz, 0.7-1.6A; 110V 400Hz, 0.8A
Instantaneous power consumption: <400W
Average power: <115W
Docking station
Flame retardant engineering thermoplastic, plated cast aluminium
Injection molded plastic, stainless steel and silicon seal
+5°C to +35°C
Water chamber
Operating temperature
Operating humidity
Operating altitude
10–95% non-condensing
Please refer to your CPAP, bilevel or non-invasive ventilation device
user guide
Storage and transport temperature
Storage and transport humidity
IEC 60601-1 classification
-20°C to +60°C
10–95% non-condensing
Class II (double insulation), Type BF Applied Part
Please refer to your flow generator user's manual for details
Electromagnetic compatibility
Humidifier performance
The following settings have been tested at 22°C, 40% RH ambient conditions:
*
†
CPAP mask pressure
RH output %
Setting 6
Nominal system output AH , BTPS
Setting 3
cm H O
Setting 3
Setting 6
2
4
>95
>95
>95
>85
16
14
13
20
18
16
10
20
>85
>75
*
†
AH- Absolute Humidity in mg/L.
BTPS- Body Temperature Pressure Saturated.
Note: The manufacturer reserves the right to change these specifications without notice.
10
Symbols which appear on the device
Caution;
Representative;
Do not touch;
Read instructions before use;
Type BF Applied Part;
Humidifier control;
European Authorised
Hot surface;
Class II equipment;
Maximum water level;
Manufacturer;
Environmental information
WEEE 2002/96/EC is a European Directive that requires the proper disposal of electrical and
electronic equipment. This device should be disposed of separately, not as unsorted
municipal waste. To dispose of your device, you should use appropriate collection, reuse and
recycling systems available in your region. The use of these collection, reuse and recycling
systems is designed to reduce pressure on natural resources and prevent hazardous
substances from damaging the environment.
If you need information on these disposal systems, please contact your local waste
administration. The crossed-bin symbol invites you to use these disposal systems. If you
require information on collection and disposal of your ResMed device please contact your
General warnings
A warning alerts you to possible injury. Specific warnings and cautions appear next to
the relevant instructions in the manual.
•
•
•
Use the H4i only for its intended use as described in this manual.
Make sure that the water chamber is empty before transporting the H4i.
The H4i is designed only for use with specific ResMed PAP devices. Do not use the
H4i with any other PAP device.
•
The H4i should only be used with delivery tubes or accessories recommended by
ResMed. Connection of other delivery tubes or accessories could result in injury, or
damage to the device.
•
•
The H4i, including the associated tubing, is for single-patient use and must not be re-
used on another person. This is to avoid the risk of cross-infection.
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 heated
water. The H4i should therefore be used with caution in patients who are unable to
guard their airways, 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 attempt to dismantle the H4i docking station. There are no user-serviceable
parts inside. Repairs and internal servicing should only be performed by an authorised
service agent.
If liquids are inadvertently spilled into or on the H4i docking station, unplug the PAP
device from the power outlet. Disconnect the docking station from the PAP device and
allow the docking station to drain and dry before using.
Do not operate the H4i if it is not working properly or if any part of the PAP device or
H4i has been dropped or damaged.
•
•
•
•
•
Keep the PAP device power cord away from hot surfaces.
Do not drop or insert any object into any opening or tubes.
Do not use the H4i in the presence of flammable or explosive materials.
Explosion hazard—do not use in the vicinity of flammable anesthetics.
Follow all precautions when using supplemental oxygen.
General warnings
11
Limited warranty
ResMed Ltd (hereafter ’ResMed’) warrants that your ResMed product shall be free
from defects in material and workmanship from the date of purchase for the period
specified below.
Product
Warranty period
90 days
•
Mask systems (including mask frame, cushion, headgear
and tubing)—excluding single-use devices
Accessories—excluding single-use devices
Flex-type finger pulse sensors
•
•
•
Humidifier water tubs
6 months
1 year
•
Batteries for use in ResMed internal and external battery
systems
•
•
•
•
•
Clip-type finger pulse sensors
CPAP and bilevel device data modules
Oximeters and CPAP and bilevel device oximeter adapters
Humidifiers and humidifier cleanable water tubs
Titration control devices
2 years
•
CPAP, bilevel and ventilation devices (including external
power supply units)
•
•
Battery accessories
Portable diagnostic/screening devices
This warranty is only available to the initial consumer. It is not transferable.
If the product fails under conditions of normal use, ResMed will repair or replace, at
its option, the defective product or any of its components.
This limited warranty does not cover: a) any damage caused as a result of improper
use, abuse, modification or alteration of the product; b) repairs carried out by any
service organization that has not been expressly authorized by ResMed to perform
such repairs; c) any damage or contamination due to cigarette, pipe, cigar or other
smoke; and d) any damage caused by water being spilled on or into an electronic
device.
Warranty is void on product sold, or resold, outside the region of original purchase.
Warranty claims on defective product must be made by the initial consumer at the
point of purchase.
This warranty replaces all other expressed or implied warranties, including any
implied warranty of merchantability or fitness for a particular purpose. Some regions
or states do not allow limitations on how long an implied warranty lasts, so the above
limitation may not apply to you.
ResMed shall not be responsible for any incidental or consequential damages claimed
to have resulted from the sale, installation or use of any ResMed product. Some
regions or states do not allow the exclusion or limitation of incidental or consequential
damages, so the above limitation may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which
vary from region to region. For further information on your warranty rights, contact
your local ResMed dealer or ResMed office.
12
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