ResMed Respiratory Product S8 Auto 25 User Guide

S8™ Auto 25  
Positive AirwAy Pressure device  
User Guide  
English  
 
S8™ Auto 25  
POSITIVE AIRWAY PRESSURE DEVICE  
User Guide  
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 Authorised 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).  
Protected by patents: AU 691200, AU 697652, AU 699726, AU 702820, AU 709279, AU 713679, AU 724589, AU 764761, EP 0651971, EP 0661071,  
EP 0858352, EP 0920845, EP 0927538, EP 0934723, JP 3638613, US 5199424, US 5245995, US 5522382, US 5704345, US 6138675, US 6213119,  
US 6240921, US 6363933, US 6367474, US 6425395, US 6502572, US 6591834, US 6675797, US 6705315, US 6745768, US 6817361, US 6988498,  
US 7040317, US 7100608. Other patents pending.  
Protected by design registrations: AU 302180, AU 302181, AU 302182, AU 302183, AU 302184, AU 302185, AU 302186, CN 200430121211.8,  
CN 200430121212.2, CN 200430121213.7, CN 200430121214.1, CN 200430121215.6, CN 200430121216.0, CN 200430121217.5, EU 269436,  
HK 0412901.9, JP 1248040, JP 1257662, JP 1257663, JP 1266956, JP 1266957, JP 1267270, JP 1267271, NZ 405614, NZ 406923, NZ 406924,  
NZ 406925, NZ 406926, NZ 406927, NZ 406928, US D544598, US D557406, US D557407, US D560795, US D561891. Other designs pending.  
S8 is a trademark of ResMed Ltd.  
© 2008 ResMed Ltd. 268223-Eng/1 08 09  
 
Contents  
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
Contraindications  
Adverse Effects  
1
1
The S8 Auto 25 System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
Masks  
Humidifier  
ResScan Data Card  
2
2
2
Using the S8 Auto 25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3  
Setting up your S8  
3
4
4
4
6
7
7
7
8
8
9
Attaching a H4i Humidifier  
How to Use the Control Panel  
Using the Menus  
SmartStart™  
Starting Treatment  
Stopping Treatment  
Using the Mask-Fitting feature  
Reminders on the S8 LCD  
Smart Data™  
Using the Data Card  
Cleaning and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10  
Daily  
Weekly  
Monthly  
Replacing the Air Filter  
10  
10  
10  
11  
11  
Servicing  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12  
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14  
Symbols Which Appear On The Device  
15  
General Warnings and Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . 15  
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19  
 
Introduction  
The S8TM Auto 25 self adjusting sleep apnoea system is indicated for the treatment  
of obstructive sleep apnoea (OSA) in patients > 30 kg. The S8 Auto 25 is intended for  
home and hospital use.  
Contraindications  
The S8 Auto 25 is not a life support device and may stop operating during power  
failure or certain fault conditions. It should not be used by patients who are  
dependent on continuous therapy.  
Positive airway pressure therapy may be contraindicated in some patients with the  
following pre-existing conditions:  
severe bullous lung disease  
pneumothorax  
pathologically low blood pressure  
dehydration  
cerebrospinal fluid leak, recent cranial surgery or trauma.  
Adverse Effects  
Patients should report unusual chest pain, severe headache or increased  
breathlessness to their prescribing physician. An acute upper respiratory tract  
infection may require temporary discontinuation of treatment.  
The following side effects may arise during the course of therapy with the device:  
drying of the nose, mouth or throat  
nosebleed  
bloating  
ear or sinus discomfort  
eye irritation  
skin rashes.  
WARNING  
!
Read the entire manual before using this S8 device.  
The S8 Auto 25 System  
The S8 Auto 25 has two treatment modes, CPAP and VAuto, and comprises the  
following elements:  
S8 Auto 25 device  
2 m air tubing  
Power cord  
Travel bag  
ResScan™ Data Card.  
Optional components include:  
3 m air tubing  
DC/DC Converter 24V/50W.  
Introduction  
1
Carry handle  
Screen  
Data Card  
module  
Keypad  
Air inlet  
DC  
AC  
Air outlet  
Masks  
The following ResMed mask systems are recommended for use with this device:  
Mask Type  
Name  
Nasal Masks  
Mirage Vista™ Nasal Mask  
Ultra Mirage™ Nasal Mask  
Ultra Mirage™ II Nasal Mask  
Mirage Activa™ Nasal Mask  
Mirage Micro™ Nasal Mask  
Nasal Pillows Systems  
Full Face Masks  
Mirage Swift™ Nasal Pillows System  
Mirage Swift™ II Nasal Pillows System  
Swift™ LT Nasal Pillows System  
Mirage™ Liberty Full Face Mask  
Mirage™ Quattro Full Face Mask  
Ultra Mirage™ Full Face Mask  
For information on using masks, see your mask manual. For the latest available  
Humidifier  
If you are experiencing dryness of the nose, throat or mouth, the H4i heated  
humidifier is recommended for use with the S8 Auto 25.  
WARNING  
!
Only ResMed mask systems have been validated for use with this S8 device.  
Only the H4i is compatible for use with this S8 device.  
ResScan Data Card  
The ResScan Data Card may be used with the S8 Auto 25 to help your clinician  
monitor your treatment or to provide you with updates to your device settings.  
2
 
Using the S8 Auto 25  
Setting up your S8  
1
2
3
4
Connect the power cord to the socket at the rear of your S8 Auto 25.  
Plug the other end of the power cord into the power outlet.  
Connect one end of the air tubing firmly onto the air outlet.  
Connect the assembled mask system to the free end of air tubing.  
For information on assembling your mask, see your mask manual.  
2
1
3
4
WARNING  
!
!
Make sure the power cord and plug are in good condition and the  
equipment is not damaged.  
Only ResMed air tubing should be used with the device. A different type of  
air tubing may alter the pressure you actually receive, reducing the  
effectiveness of your treatment.  
Blocking the hose and/or air inlet of the device while in operation could lead  
to overheating of the device.  
CAUTION  
Be careful not to place the device where it can be bumped or where  
someone is likely to trip over the power cord.  
If you put the device on the floor, make sure the area is free from dust and  
clear of bedding, clothes or other objects that could block the air inlet.  
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3
Attaching a H4i Humidifier  
The H4i humidifier attaches to the front of the S8 Auto 25 device to provide heated  
humidification. This device automatically detects the presence of the H4i and no other  
accessories are required for its use. For more information on using your H4i, please  
refer to the H4i user guide.  
WARNING  
!
Make sure that the water chamber is empty and thoroughly dried before  
transporting the H4i.  
When using the travel bag, always separate the S8 unit and the H4i and  
place the H4i in its pouch.  
How to Use the Control Panel  
LCD screen  
Keypad  
Start/Stop Key  
The control panel of your S8 device includes an LCD screen which displays the  
menus and treatment screens as well as a keypad for navigating through the menus  
and delivering treatment. The keypad has the following keys:  
Key  
Function  
Starts or stops treatment. Extended hold for at least three seconds  
starts the mask-fit feature.  
Start/Stop  
Allows you to increase settings options and scroll through the  
menu.  
Up  
Allows you to decrease settings options and scroll through the  
menu.  
Down  
Performs the function indicated by the guiding text displayed above  
it on the LCD screen. Guiding text includes menu, change, and  
apply.  
Left  
Performs the function indicated by the guiding text displayed above  
it on the LCD screen. Guiding text includes exit and cancel.  
Right  
4
 
Using the Menus  
The S8 Auto 25 provides a set of functions which are arranged in menus and  
submenus. Via the LCD screen, the menus and submenus allow you to view and  
change the settings for a particular function. To navigate and make selections:  
1
2
3
Press  
Press  
or  
to scroll through items within a level.  
to enter a submenu and to apply an option choice.  
Press  
options.  
to navigate out of a menu or submenu and to exit without changing  
Your clinician has preset the menu to either a standard view or a detailed view. The  
following illustration summarises these views:  
VAuto mode  
example  
WELCOME  
>>>>>>  
SETTLE: 10min  
menu  
Standard View  
Detailed View  
MASK: ULTRA  
change  
SETTINGS  
enter  
exit  
exit  
exit  
MASK: ULTRA  
change  
exit  
exit  
EXHALATION  
change  
EXHALATION  
change  
TUBE LENGTH: 2m  
change exit  
USED:  
00090hrs  
00006/00012 days  
SMARTSTART: OFF  
exit  
SW: SX459-0200  
LEAK ALERT: ON  
change  
exit  
exit  
RESULTS  
enter  
exit  
USED: 00090hrs  
00003/00122days  
SMART DATA  
enter  
exit  
MASK FIT: *****  
excelnt  
Thesemenusonlyappear  
if your clinician has  
enabled Exhalation or  
Smart Data.  
exit  
exit  
PRESSURE: 8.0  
USAGE: 4.00hrs  
exit  
OPTIONS  
enter  
exit  
exit  
SMART DATA  
enter  
exit  
AUTO APPEAR: ON  
change exit  
LANGUAGE:ENGLISH  
change exit  
SERVICING  
enter  
SN: 20080102356  
exit  
SW: SX459-0200  
exit  
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5
How to Select the Mask Type  
Scroll to MASK and select  
. Press  
or  
until you see the setting  
you require. The following table shows the setting that should be selected for each  
mask:  
Settings  
Mask  
ULTRA  
Ultra Mirage Nasal Mask  
Ultra Mirage II Nasal Mask  
MIR FULL  
Mirage Liberty Full Face Mask  
Mirage Quattro Full Face Mask  
Ultra Mirage Full Face Mask  
ACTIVA  
SWIFT  
Mirage Activa Nasal Mask  
Mirage Swift Nasal Pillows System  
Mirage Swift II Nasal Pillows System  
Swift LT Nasal Pillows System  
STANDARD  
MIRAGE  
Mirage Vista Nasal Mask  
Mirage Micro Nasal Mask  
Mirage Nasal Mask  
How to change the EPR level (CPAP mode)  
Expiratory Pressure Relief (EPR) can be used to help ease any discomfort you may  
experience when breathing out during treatment. If your clinician has allowed access  
you can change the EPR level. There are four settings: OFF; 1 (lowest EPR); 2; and 3  
(highest EPR).  
1
2
3
4
On the standby (RAMP) screen, press  
.
Press  
Press  
Press  
until you see EPR LEVEL, then press  
or until you see the setting that you require.  
to save the setting.  
.
How to change the Exhalation rate (VAuto mode)  
If enabled by the clinician, you can adjust the Exhalation rate so that the rate of  
pressure drop is at a level that is most comfortable for you. There are three settings:  
Fast; Medium; and Slow.  
1
2
3
4
On the standby (SETTLE) screen, press  
.
Press  
Press  
Press  
until you see EXHALATION, then press  
or until you see the setting that you require.  
to save the setting.  
.
SmartStart™  
If your clinician has enabled SmartStart/Stop, your device will start automatically  
when you breathe into your mask and stop automatically when you take your mask  
off.  
6
 
Starting Treatment  
1 Make sure the power is on.  
The product name is displayed briefly on the LCD screen, then the standby (Ramp)  
screen appears. The key and LCD backlights also turn on.  
2
Fit your mask as described in the mask user instructions.  
WARNING  
!
A mask should not be used unless your S8 Auto 25 is turned on and operating  
properly.  
3
4
5
6
Alter the ramp time if required.  
To start therapy, simply breathe into the mask or press  
.
Lie down and arrange the air tubing so that it is free to move if you turn in your sleep.  
After starting therapy, an introductory treatment screen will display:  
Mode and pressure display  
VA:SETL  
A>>>>  
4.0-10.0  
PS 6.0  
VAuto  
mode  
example  
LK: 10L/min RR: 15  
Leak and breath information  
Inspiration information  
MV: 10.2  
VT: 680  
S**TiMn  
Ti 1.5s  
TiMx 2.0  
1: 1.6  
SpO2: 98%  
HR : 60  
This screen only displays if  
ResLink and an oximeter are  
connected  
exit  
Stopping Treatment  
To stop treatment at any time, remove your mask and press  
. If your clinician  
has enabled SmartStart/Stop, simply remove your mask and treatment will end.  
Note: SmartStart/Stop does not operate if:  
you have a Full Face Mask; or  
Leak Alert is enabled.  
Using the Mask-Fitting feature  
The S8 Auto 25 includes a mask-fitting feature to help you fit your mask properly. The  
mask-fitting feature delivers air pressure for a three-minute period, prior to starting  
treatment, for checking and adjusting your mask fit to minimise leaks.  
To use the mask-fitting feature:  
1
2
Fit your mask as described in the mask user instructions.  
Hold down  
for at least three seconds until air pressure delivery starts and  
the following screen appears:  
MASK FIT:  
excelnt  
*****  
Mask-fit star rating  
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7
The LCD displays a mask-fit star rating from zero to five stars. Three to five stars  
indicates a good fit or better. Zero to two stars indicates that the mask needs to be  
adjusted.  
Reminders on the S8 LCD  
Your clinician may have set your S8 Auto 25 to remind you about important events,  
such as when to replace your mask, when to insert your Data Card and so on.  
The reminder message is displayed on the LCD and is visible if the device is not  
delivering therapy. The backlight on the LCD flashes when a message is displayed.  
Your clinician can set any of the following reminders on your LCD:  
Message  
Description  
Action  
INSERT  
CARD  
May appear if your device is  
Data Card enabled.  
Insert your Data Card and follow any  
instructions that your clinician has given you.  
When you have done this, the message will  
disappear from the LCD. Pressing  
will also remove the message.  
(Ok)  
REPLACE  
MASK  
Reminds you that your mask  
is due for replacement.  
Press  
(Ok) to remove the message  
from your LCD and replace your mask with a  
new one.  
CALL  
PROVIDER  
Reminds you to contact your  
clinician; for example to  
discuss your therapy.  
Press  
(Ok) to remove the message  
from your LCD and contact your clinician/  
service provider.  
REPLACE  
FILTER  
Reminds you to replace the  
air filter on your device.  
Press  
(Ok) to remove the message  
from your LCD and replace the air filter.  
SERVICE  
DUE  
Reminds you to return your  
device for service.  
Press  
(Ok) to remove the message  
from your LCD and contact your clinician/  
service provider.  
Customised  
messages  
Your clinician may also set  
reminders for other reasons;  
for example to call a  
Press  
(Ok) to remove the message  
from your LCD and contact your clinician/  
service provider.  
particular person or number.  
Smart Data™  
Smart Data menus only appear if enabled by the clinician. Your clinician can set any  
of the following Smart Data options:  
Message  
Description  
PRESSURE  
MASK FIT  
USAGE  
Displays the therapy pressure from the previous session.  
Displays the mask-fit star rating from the previous session.  
Displays the usage hours from the previous session.  
AUTO APPEAR  
If ON is selected, Smart Data screens are automatically displayed  
when you turn on your device.  
8
 
Using the Data Card  
If your clinician needs to review your treatment, they will ask you to use the Data Card  
to copy data from your S8 device and return the card to them.  
Copying Data onto a Data Card  
1
2
Switch on your S8 and wait until you see the standby (Ramp) screen.  
Hold the Data Card with the arrow facing up and insert it into the Data Card slot until  
it stops. Data copying starts automatically.  
The “Card Inserted Please Wait” message is displayed on the LCD while data is being  
copied. Copying takes up to 30 seconds.  
The “Copy Complete Remove Card” message is displayed on the LCD when copying  
has finished.  
3
4
5
Remove the Data Card by gripping the end of the Data Card and pulling it out.  
Store the Data Card in its protective folder when not in use.  
Return the card in its protective folder to your clinician using a postal envelope.  
Updating Settings on your S8 Auto 25  
If your clinician has provided a Data Card with new device settings:  
1
With the device in standby (Ramp) mode, insert the Data Card into the slot on the  
Data Card module. Updating will start automatically.  
The “Card Inserted Please Wait” message is displayed on the LCD while updating is  
in progress. Updating takes approximately five seconds.  
The “Settings Success Remove Card” message is displayed on the LCD if the  
settings were updated successfully.  
Note: This message only appears once. If you re-insert the Data Card after you have  
updated your settings, this message is not displayed.  
2
3
Remove the Data Card from the S8 device.  
Store the Data Card in its protective folder when not in use.  
WARNING  
!
If your clinician has told you to use the Data Card to update the settings on your  
device and the “Settings Success” message does not appear, contact your  
clinician immediately.  
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9
Traveling with the S8 Auto 25  
International Use  
Your S8 flow generator has an internal power adapter that enables it to operate in  
other countries. It will operate on power supplies of 100–240V and 50–60Hz. No  
special adjustment is necessary, but you will require an approved power cord for that  
country.  
Use on an Aircraft  
Please consult the medical services department of your carrier if you intend to use  
your S8 device on an aircraft.  
Note: You should not use your S8 device while the aircraft is taking off or landing.  
Use with DC Power  
You must use a ResMed DC/DC Converter 24V/50W to connect your S8 Auto 25 to  
a 12V or 24V DC power source. Contact your equipment supplier or ResMed for  
details.  
WARNING  
!
The device should not be connected to both AC and DC power sources  
simultaneously.  
10  
 
Cleaning and Maintenance  
You should regularly carry out the cleaning and maintenance described in this section.  
Refer to your mask and humidifier manuals for detailed instructions regarding the care  
of those devices.  
Daily  
Disconnect the air tubing and hang it in a clean, dry place until next use.  
Weekly  
1
2
3
4
Remove the air tubing from the S8 device and the mask.  
Wash the air tubing in warm water using mild detergent.  
Rinse thoroughly, hang, and allow to dry.  
Before the next use, reconnect the air tubing to the air outlet and mask.  
Monthly  
1
2
Clean the exterior of the S8 with a damp cloth and mild liquid soap.  
Check the air filter for holes and blockage by dirt or dust.  
WARNING  
!
Beware of electric shock. Do not immerse the unit or power cord in water.  
Always unplug the unit before cleaning and be sure it is dry before plugging  
back in.  
The mask system and air tubing are subject to normal wear and tear. Inspect  
them regularly for damage.  
Do not use bleach, chlorine, alcohol, or aromatic-based solutions,  
moisturising or antibacterial soaps or scented oils to clean the air tubing or  
the device. These solutions may cause hardening and reduce the life of the  
product.  
Replacing the Air Filter  
Replace the air filter every six months (or more often if necessary).  
1
Remove the air filter cover at the back of the S8 device.  
Air filter cover  
2
3
4
Remove and discard the old air filter.  
Insert a new filter with the blue-tinted side facing out from the device.  
Replace the air filter cover.  
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11  
WARNING  
!
Do not wash the air filter. The air filter is not washable or reusable.  
The air filter cover protects the device in the event of accidental liquid  
spillage onto the device. Ensure the air filter and air filter cover are fitted at  
all times.  
Servicing  
This product 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. 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 authorised ResMed service centre.  
CAUTION  
!
Do not attempt to open the S8 case. There are no user serviceable parts  
inside.  
Inspection and repair should only be performed by an authorised agent.  
Under no circumstances should you attempt to service or repair the flow  
generator yourself.  
12  
 
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 device.  
Problem/Possible Cause  
No display  
Solution  
Power is not connected.  
Ensure the power cable is connected and the power switch (if  
available) is on.  
Insufficient air delivered from the S8 device  
Ramp time is in use.  
Air filter is dirty.  
Wait for air pressure to build up or change ramp time.  
Replace air filter.  
Check air tubing.  
Air tubing is not connected  
properly.  
Mask and headgear are not  
positioned correctly.  
Adjust position of mask and headgear.  
Adjust headgear or re-fit cushion.  
Cushion seated incorrectly  
causing excessive leak.  
Humidifier control dial set too  
high, resulting in accumulation of  
water in the air tubing.  
Turn humidifier control down and empty the water from the air  
tubing.  
Device does not start when you breathe into the mask  
Breath is not deep enough to  
trigger SmartStart/Stop.  
Take a deep breath in and out through the mask.  
There is excessive leak.  
Adjust position of mask and headgear.  
Air tubing not connected properly. Connect firmly at both ends.  
Enable SmartStart/Stop.  
SmartStart/Stop is disabled.  
Note: SmartStart/Stop is not  
available if you are using a Full  
Face Mask or if Leak Alert is  
enabled.  
Device does not stop when you remove your mask  
SmartStart/Stop is not enabled.  
Note: SmartStart/Stop is not  
available if you are using a Full  
Face Mask or if Leak Alert is  
enabled.  
Enable SmartStart/Stop.  
SmartStart/Stop is enabled but the flow generator does not stop automatically when you  
remove your mask  
Incompatible mask system being  
used.  
Use only equipment recommended by ResMed.  
Displays error message: Check tube!! Key if done  
The air tubing is loose or blocked. Check that the air tubing is connected securely to your mask  
and the air outlet. Press the Start/Stop key to restart the  
device. If this does not clear the message, disconnect the  
power cord and then reconnect it to restart the device.  
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13  
Problem/Possible Cause  
Solution  
Displays error message: Exxxx Call Service(where xxxxdefines an error)  
Component failure.  
Record error number and contact your ResMed service centre.  
Displays error message: HIGH LEAK!!! Adjust Mask  
You have experienced excessively  
high leak levels for more than 20  
seconds.  
Check that your air tubing is connected properly.  
Adjust headgear.  
The following message is displayed on the LCD after you try to update settings or copy data to  
the Data Card: Card Error Remove Card  
Data Card is not inserted  
correctly.  
Ensure that the Data Card is inserted with the arrow facing up  
as far as it can go.  
You may have removed the Data  
Card before settings were copied  
to the S8 device.  
Reinsert the Data Card and wait for the Settings Success  
Remove Card or Copy Complete Remove Card  
message to appear on the LCD.  
The following message is displayed on the LCD after you try to update the settings using the  
Data Card: Settings Invalid Remove Card  
The identification details on the  
Data Card do not match the  
details on your device.  
Contact your clinician/service provider immediately.  
The following message is displayed on the LCD after you try to update the settings using the  
Data Card: Settings Error Remove Card  
There is a data error on the Data  
Card.  
Contact your clinician/service provider immediately.  
The following message is NOT displayed on the LCD after you try to update the settings using  
the Data Card: Settings Success Remove Card  
The settings were not updated.  
Contact your clinician/service provider immediately.  
14  
 
Technical Specifications  
Operating pressure range  
4 to 25 cm H O  
2
Maximum single fault steady  
state pressure  
40 cm H O  
2
Pressure measurement  
tolerance  
0.5 cm H O 4% of the measured reading  
2
Flow measurement tolerance  
VAuto mode  
0.1 or 20% of reading, whichever is greater  
4 to 25 cm H O (measured at the mask); Min EPAP: 4 cm H O;  
2
2
Pressure Support: 0 to 10 cm H O  
2
CPAP mode  
4 to 20 cm H O (measured at the mask)  
2
DECLARED DUAL-NUMBER NOISE EMISSION VALUES in accordance with ISO 4871:  
Sound pressure level  
26 dBA with uncertainty of 2 dBA as measured according to  
ISO 17510-1: 2002  
28 dBA with uncertainty of 2 dBA as measured according to  
ISO 17510-1: 2007  
Sound power level  
36 dBA with uncertainty of 2 dBA as measured according to  
ISO 17510-1: 2007  
Dimensions (L x W x H)  
Weight  
112 mm x 164 mm x 145 mm  
1.3 kg  
Power supply  
Input range 100–240V, 50–60Hz, 40VA (typical power consumption),  
< 100VA (maximum power consumption)  
Housing construction  
Operating temperature  
Operating humidity  
Flame retardant engineering thermoplastic  
+5ºC to +35ºC  
10–95% non-condensing  
-20ºC to +60ºC  
Storage and transport  
temperature  
Storage and transport humidity  
Operating altitude  
10–95% non-condensing  
Sea level to 2,600 m  
Supplemental Oxygen  
Recommended maximum supplemental oxygen flow: 4 L/min  
Electromagnetic compatibility  
Product complies with all applicable electromagnetic compatibility  
requirements (EMC) according to IEC60601-1-2, for residential,  
commercial, and light industry environments  
Air filter  
Two-layered, powder-bonded, polyester non-woven fiber  
Flexible plastic, 1 x 2 m  
Air tubing  
Air outlet  
The 22 mm conical air outlet complies with ISO 5356-1  
Class II (double insulation), Type CF  
IEC 60601-1 classification  
Notes:  
The manufacturer reserves the right to change these specifications without notice.  
Pressure may be displayed in cm H 0 or hPa.  
2
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15  
Symbols Which Appear On The Device  
Caution;  
Follow instructions for use;  
Drip proof;  
Type CF equipment;  
Dangerous voltage;  
Manufacturer;  
Class II equipment;  
Environmental information  
Start/Stop and mask-fit;  
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 ResMed office, local distributor or go to  
General Warnings and Cautions  
Warnings  
!
Advice contained in this manual should not supersede instructions given by the  
prescribing physician.  
A patient should not connect a device to the data communication port unless instructed  
to do so by their health care provider or physician. Only ResMed products are designed  
to be connected to the data communication port. Connecting other devices could result  
in injury, or damage to the S8 device.  
This S8 device should only be used with masks (and connectors*) recommended by  
ResMed, or by a physician or respiratory therapist. A mask should not be used unless the  
S8 device is turned on and operating properly. The vent hole or holes associated with the  
mask should never be blocked.  
Explanation: This S8 device is intended to be used with special masks (or connectors*)  
which have vent holes to allow continuous flow of air out of the mask. When the device  
is turned on and functioning properly, new air from the device flushes the exhaled air out  
through the mask vent holes. However, when the device is not operating, insufficient  
fresh air will be provided through the mask, and the exhaled air may be rebreathed.  
Rebreathing of exhaled air for longer than several minutes can, in some circumstances,  
lead to suffocation. This applies to most Positive Airway Pressure devices.  
In the event of power failureor machine malfunction, remove the mask.  
This S8 device can be set to deliver pressures up to 25 cm H2O. In the unlikely event of  
certain fault conditions, pressures up to 40 cm H2O are possible.  
Follow all precautions when using supplemental oxygen.  
Oxygen flow must be turned off when the flow generator is not operating, so that  
unused oxygen does not accumulate within the flow generator enclosure and create a  
risk of fire.  
If the oxygen has been left on, turn off the device, then wait 30 minutes before turning on  
the device again.  
*
Ports may be incorporated into the mask or in connectors that are near the mask.  
During partial (below rated minimum voltage) or total power failure, therapy pressures will not be  
delivered. When power is restored, operation will recommence with no change to settings.  
16  
 
Note: At a fixed rate of supplemental oxygen flow, the inhaled oxygen concentration  
varies, depending on the pressure settings, patient breathing pattern, mask, point of  
application and leak rate.  
Do not use the S8 Auto 25 if there are obvious external defects or unexplained changes  
in performance.  
Do not open the S8 case. There are no user serviceable parts inside. Repairs and internal  
servicing should only be performed by an authorised service agent.  
Explosion hazard—do not use in the vicinity of flammable anesthetics.  
Cautions  
!
At low pressures, the flow through the exhalation ports of your mask may not clear all  
exhaled gas from the tubing. Some rebreathing may occur.  
The airflow for breathing produced by this device can be as much as 11ºF (6ºC) higher  
than the temperature of the room. Caution should be exercised if the room temperature  
is warmer than 90ºF (32ºC).  
When AC mains power (100–240V AC) is not available, always use a ResMed DC/DC  
Converter 24V/50W. (The DC/DC Converter 24V/50W is available as an optional  
accessory. It is not supplied with all models.)  
Note: The above are general warnings and cautions. Specific warnings, cautions and  
notes appear with the relevant instructions in the manual.  
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17  
Guidance and Manufacturer’s Declaration—Electromagnetic Emissions and Immunity  
Guidance and manufacturer’s declaration—electromagnetic emissions  
The S8 Auto 25 device is intended for use in the electromagnetic environment specified below. The customer or the user of the  
S8 device should assure that the device is used in such an environment.  
Emissions test  
Compliance  
Electromagnetic environment—guidance  
RF emissions CISPR11  
Group 1  
The S8 device uses RF energy only for its internal  
function. Therefore, its RF emissions are very low  
and are not likely to cause any interference in  
nearby electronic equipment.  
RF emissions CISPR 11 with serial adapter  
RF emissions CISPR 11 with USB adapter  
Harmonic Emissions IEC 61000-3-2  
Class B  
Class B  
Class A  
Complies  
The S8 device is suitable for use in all  
establishments, including domestic  
establishments and those directly connected to  
the public low-voltage network that supplies  
buildings used for domestic purposes.  
Voltage Fluctuations/Flicker Emissions IEC  
61000-3-3  
Warnings: The S8 device should not be used adjacent to or stacked with other equipment.  
If adjacent or stacked use is necessary, the S8 device should be observed to verify normal operation in the configuration in which  
it will be used. The use of accessories (eg, humidifiers) other than those specified in this manual is not recommended. They may  
result in increased emissions or decreased immunity of the S8 device.  
Recommended separation distances between portable and mobile RF communications equipment and the S8  
series of devices  
The S8 device is intended for use in an environment in which radiated RF disturbances are controlled. The customer or the user of  
the S8 device can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF  
communications equipment (transmitters) and the S8 device as recommended below, according to the maximum output power of  
the communications equipment.  
Separation distance according to frequency of transmitter (m)  
Rated maximum output  
power of transmitter (W)  
150 kHz to 80 MHz  
d = 1.17 P  
80 MHz to 800 MHz  
d = 0.35 P  
800 MHz to 2.5 GHz  
d = 0.7 P  
0.01  
0.1  
1
0.17  
0.37  
1.17  
0.04  
0.11  
0.35  
1.11  
0.07  
0.22  
0.7  
10  
3.69  
11.70  
2.21  
7.0  
100  
3.50  
For transmitters rated at a maximum output power not listed above, the recommended separation distance d in metres (m) can be  
determined using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the  
transmitter in watts (W) according to the transmitter manufacturer.  
NOTE 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.  
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection  
from structures, objects and people.  
18  
 
Guidance and manufacturer’s declaration—electromagnetic immunity  
The S8 device is intended for use in the electromagnetic environment specified below. The customer or the user of the S8 device  
should assure that the device is used in such an environment.  
IEC60601-1-2 test  
level  
Immunity test  
Compliance level  
Electromagnetic environment—guidance  
Electrostatic  
discharge (ESD)  
IEC 61000-4-2  
6 kV contact  
8 kV air  
6 kV contact  
8 kV air  
Floors should be wood, concrete or ceramic tile. If  
floors are covered with synthetic material, the relative  
humidity should be at least 30%.  
Electrical fast  
transient/burst  
IEC 61000-4-4  
2 kV for power  
supply lines  
1 kV for input/  
output lines  
2 kV  
Mains power quality should be that of a typical  
commercial or hospital environment.  
Not Applicable  
Surge  
IEC 61000-4-5  
1 kV differential  
mode  
1 kV differential  
mode  
Mains power quality should be that of a typical  
commercial or hospital environment.  
2 kV common  
mode  
2 kV common  
mode  
Voltage dips, short  
interruptions and  
voltage variations  
on power supply  
input lines.  
<5% Ut (>95% dip in  
Ut) for 0.5 cycle  
40% Ut (60% dip in  
Ut) for 5 cycles  
70% Ut (30% dip in  
Ut) for 25 cycles  
<5% Ut (>95%dip in  
Ut) for 5 sec  
< 12V (>95% dip in  
240V) for 0.5 cycle  
96V (60% dip in  
240V) for 5 cycles  
168V (30% dip in  
240V) for 25 cycles  
<12V (>95%dip in  
240V) for 5 sec  
Mains power quality should be that of a typical  
commercial or hospital environment.  
If the user of the S8 device requires continued  
operation during power mains interruptions, it is  
recommended that the S8 device be powered from an  
uninterruptible power source.  
IEC 61000-4-11  
Power frequency  
(50/60Hz)magnetic  
field IEC 61000-4-8  
3 A/m  
3 A/m  
Power frequency magnetic fields should be at levels  
characteristic of a typical location in a typical  
commercial or hospital environment.  
Portable and mobile RF communications equipment  
should be used no closer to any part of the S8 device,  
including cables, than the recommended separation  
distance calculated from the equation applicable to  
the frequency of the transmitter.  
Recommended separation distance  
d = 1.17 P  
Conducted RF  
IEC 61000-4-6  
3 Vrms  
150 kHz to 80 MHz  
3 Vrms  
10 V/m  
Radiated RF  
IEC 61000-4-3  
10 V/m  
80 MHz to 2.5 GHz  
d = 0.35 P 80 MHz to 800 MHz  
d = 0.70 P 800 MHz to 2.5 GHz  
where P is the maximum output power rating of the  
transmitter in watts (W) according to the transmitter  
manufacturer and d is the recommended separation  
distance in meters (m).  
Field strengths from fixed RF transmitters, as  
determined by an electromagnetic site survey,  
a
should be less than the compliance level in each  
b
frequency range.  
Interference may occur in the vicinity of equipment  
marked with this symbol  
.
NOTE 1: Ut is the AC mains voltage prior to application of the test level.  
NOTE 2: At 80 MHz and 800 MHz, the higher frequency range applies.  
NOTE 3: These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection  
from structures, objects and people.  
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios,  
amateur radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the  
electromagnetic environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured  
field strength in the location in which the S8 device is used exceeds the applicable RF compliance level above, the S8 device  
should be observed to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such  
as reorienting or relocating the S8 device.  
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 10 V/m.  
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19  
Limited Warranty  
ResMed warrants that your ResMed product shall be free from defects in material  
and workmanship for the period specified below from the date of purchase by the  
initial consumer. This warranty is not transferable.  
Product  
Warranty Period  
ResMed humidifiers, ResControl™, ResLink™, ResTraxx™  
ResMed flow generators  
1 Year  
2 Years  
90 Days  
Accessories, mask systems (including mask frame, cushion,  
headgear and tubing). Excludes single-use devices.  
Note: Some models are not available in all regions.  
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 organisation that has not been expressly  
authorised by ResMed to perform such repairs;  
c) any damage or contamination due to cigarette, pipe, cigar or other smoke;  
d) any damage caused by water being spilled on or into a flow generator.  
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 is in lieu of all other express 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 occurred as a result of 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.  
20  
 

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