For decades Weinmann has been developing,
manufacturing and marketing devices for sleep
apnoea therapy, inhalation therapy, oxygen
therapy and emergency medical care.
With its SOMNOcomfort and SOMNOvent S
and ST, and also SOMNOsmart 2, SOMNOset
and SOMNOsoft +, Weinmann offers a
graduated therapy concept from treatment of
sleep-related respiratory disorders to treatment of
global respiratory insufficiency.
The aim of these service and repair instructions is
to familiarize you, as a trained expert in the field,
with the function, technology, servicing and repair
of the SOMNOsmart 2, SOMNOset and
SOMNOsoft +. This will enable you to give your
customers proper instructions, eliminate faults
yourself, perform the tests specified in the operating
instructions, carry out any repairs and service the
device in accordance with these service and
repair instructions.
In the event of a guarantee claim, the devices must be
sent to Weinmann.
To enable us to process ex gratia requests or
warranty claims, please enclose the customer’s
proof of purchase (invoice) with the device.
Repairs or servicing work may be performed only
by Weinmann or by trained specialist staff.
You are responsible for repairs carried out yourself
and for their warranty!
Use only original Weinmann spare parts for repairs.
Please bear in mind:
Your customer trusts you and relies on your expert
capability, just as you rely on Weinmann.
Note:
For the following information, please consult the Operating Instructions for the individual devices:
•Safety instructions
•Preparing for use
•Operation
•Cleaning and disinfecting after use
•Guarantee
Introduction3
1. Overview
SOMNOsmart 2, SOMNOset and SOMNOsoft +
15 Cap
14 Mask
13 Exhalation system
12 Hose system
11 Pressure measurement tube
6 Humidifier connection
8 Stopper (2x)
10 Adapter
9 Drying adapter
7 Device outlet port
5 Control panel
and display
Control panel and display SOMNOsmart 2
17 Total therapy time /
16 Softstart symbol
23 Service symbol
Daily therapy time
22 Humidifier
activated
21 LC display
18 Change filters
19 Pressure rise/Pressure
drop and softPAP mode
activated
20 Therapy pressure
2 Bacteria filter
3 Power cord
1 Therapy device
4 Ports
24 On/Off button
28 Humidifier
indicator
lamp
27 Humidifier button
(Levels 1-6)
26 Softstart button
Control panel and display SOMNOset
17 Total therapy time /
16 Softstart symbol
23 Service symbol
Daily therapy time
P
ini
22 Humidifier
activated
21 LC display
18 Change filters
19 Pressure rise/
Pressure drop
20 Therapy pressure
Control panel and display SOMNOsoft +
16 Softstart symbol
23 Service symbol
17 Total therapy time /
Daily therapy time
22 Humidifier
activated
20 Therapy pressure
21 LC display
18 Change filters
19 softPAP mode
activated
P
ini
24 On/Off
25 Set button
26 Softstart button
28 Humidifier
indicator lamp
SOMNOsoft
28 Humidifier
indicator lamp
27 Humidifier button
(Levels 1-6)
+
1 hPa 1 cmH2O
27 Humidifier button
(Levels 1-6)
24 On/Off
26 Softstart button
button
button
4Overview
Device combinations
31 Rating plate
29 Filter cover
30 Power connection
33 Power inverter
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35 SOMNOclick/
32 Carrying bag
34 O2 switching valve
SOMNOclick 300
Overview5
2. Description
Note:
SOMNOsmart 2, SOMNOset and SOMNOsoft + are of largely identical basic design. They differ only in
the software, display and fascia film. SOMNOsoft + has no oscillation generator and no microphone.
2.1 Purpose of SOMNOsmart 2
SOMNOsmart 2 is a smartPAP device for treating
sleep-related respiratory disorders.
SOMNOsmart 2 is a self-regulating device. It
recognizes respiratory events and varies the
airway pressure accordingly.
While the patient is asleep, the airways are
braced by the air pressure generated.
Airway pressure is administered by means of a
mask.
SOMNOsmart 2 can be used for people aged
12 years or more.
2.2 Purpose of SOMNOset
SOMNOset is a device for efficient adjustment to
CPAP patients. The device can work on a standalone basis or in conjunction with the remote
control SOMNOadjust or an extended user
interface of the SOMNOsupport software. The
recorded data can also be visualized and
evaluated with the aid of SOMNOsupport.
SOMNOset permits titration without the patient
coming to a sleep laboratory. Titration can be
carried out in the patient's familiar surroundings.
SOMNOset may be operated as a self-regulating
device. In that case SOMNOset recognizes
respiratory events and varies the airway pressure
accordingly.
While the patient is asleep, the airways are
braced by the air pressure generated.
SOMNOsmart 2 from software version 6.0; in general from device no. 10,000:The softPAP mode in-
creases patient comfort by means of a brief
pressure reduction during the transition from inhalation to exhalation.
Important!
SOMNOsmart 2 can reliably prevent closure of
the airways only if the upper and lower pressure
limits specific to the patient and prescribed by a
doctor have been determined, e.g. in a sleep
laboratory, and set accordingly.
SOMNOsmart 2 is not suitable for use as a life-
support system.
Airway pressure is administered by means of a
mask.
In the Autotitration mode the device determines,
during the titration night, a therapy pressure
(recommended titration pressure) that largely
prevents closure of the upper airways.
From the data recorded, the physician can
determine the required therapy pressure. This
pressure is set on the therapy device which is given
to the patient for long-term therapy following
titration.
SOMNOset can be used for people aged 12
years or more.
Important!
SOMNOset is not suitable for use as a life-support
system.
6Description
2.3 Uses SOMNOsoft +
SOMNOsoft + is a CPAP device for treating sleep-
related respiratory disorders.
The softPAP mode increases patient comfort by
means of a brief pressure reduction during the transition from inhalation to exhalation.
SOMNOsoft + recognises respiratory events. This
permits efficient therapy control.
During sleeping, the patient’s airways are braced
by the air pressure generated.
2.4 Function of SOMNOsmart 2
SOMNOsmart 2 works on the principle of an
electrically powered flow generator delivering an
electronically controlled constant pressure level.
A radial fan draws in ambient air through a filter
and conveys it to the device outlet port. From here
the air flows through the hose system and the mask
to the patient.
An oscillation generator creates a slight sinusoidal
pneumatic oscillation in the air flow produced by
the device.
The airway and oscillation pressure is registered
via the pressure measurement tube in the mask.
The current oscillation pressure reading is
compared with an average value and the
preceding values. This evaluation of the oscillation
pressure makes it possible to identify any
significant change in airway resistance and hence
to increase or reduce the therapy pressure via the
flow generator.
The pressure present in the mask is shown in the LC
display. The microprocessor-controlled flow
generator regulates the pressure at the value
determined.
The device also records a respiratory flow signal
that can be output to a PSG system or read off with
the aid of SOMNOsupport. This makes it possible
to identify apnoea, hypopnoea and respiratory
flow limitations.
Airway pressure is administered by means of a
mask.
SOMNOsoft + can be used both in CPAP mode
and in softPAP mode for individuals aged 12 years
or more.
Important!
SOMNOsoft + can reliably prevent closure of the
airways only if the therapy pressure specific to the
patient and prescribed by a physician has been
determined, e.g. in a sleep laboratory.
SOMNOsoft + is not suitable for use as a life-sup-
port system.
The exhalation system before the mask prevents
accumulation of CO2-enriched expired air in the
hose system.
Auto switch-on can be activated on the
SOMNOsmart 2. The device can then be
switched on by breathing into the mask. If there is
no pressure for about 5 seconds (e.g. because the
mask is taken off), the SOMNOsmart 2 switches
off automatically.
Following a power failure and resumption of the
power supply, the status of SOMNOsmart 2 is the
same as it was before the power failure. The
stored data remain preserved.
There are two functions designed to make it easier
to go to sleep: (soft-)start or start pressure function.
(Soft-)start function: When this is switched on, the
pressure is adjusted to the (soft-)start pressure set by
the physician. The pressure limits then gradually increase to the set values. The time taken for this increase is adjustable. This function is suitable for
patients who find the high pressure unpleasant
while they are awake.
Additional function from software version 6.0:
Start pressure function: The pressure remains at the
set value throughout the start period. At the end of
the start period, the pressure is reduced to the lower pressure limit. This function is suitable for
patients who find low pressure unpleasant while
they are awake, or who need high pressure quickly after they have gone to sleep.
Description7
In softPAP mode the respiratory flow curve is analysed continuously to ensure timely recognition of
the transition between inhalation and exhalation.
Before the transition to exhalation the therapy pressure is reduced to make it easier to breathe out.
The size of this pressure reduction can be set in two
stages: “slight” (stage 1) and “normal” (stage 2).
This increases patient comfort. Before the next inhalation phase, the pressure is raised to the therapy figure once again.
2.5 Function of SOMNOset
If apnoea or valid flow limitations occur while the
patient is sleeping, the softPAP mode is automatically deactivated for the relevant period. If the respiratory frequency is too high, the softPAP mode is
also temporarily deactivated. However, the therapy pressure remains reduced during this period.
In full face mode the device supports therapy with
a full face mask. The event-related pressure adjustment is modified accordingly.
SOMNOset works on the principle of an
electrically powered flow generator delivering an
electronically controlled constant pressure level.
A radial fan draws in ambient air through a filter
and conveys it to the device outlet port. From here
the air flows through the hose system and the mask
to the patient.
An oscillation generator creates a slight sinusoidal
pneumatic oscillation in the air flow produced by
the device.
The airway and oscillation pressure is registered
via the pressure measurement tube in the hose
system.
The current oscillation pressure reading is
compared with an average value and the
preceding values. This evaluation of the oscillation
pressure makes it possible to identify any
significant change in airway resistance and hence
to increase or reduce the therapy pressure via the
flow generator.
The pressure present in the mask is shown in the LC
display. The microprocessor-controlled flow
generator regulates the pressure at the value
determined.
The values determined are recorded. In
Autotitration mode, the recommended therapy
pressure is calculated at the end of the titration
night.
The device also records a respiratory flow signal
that can be output to a PSG system or read off with
the aid of SOMNOsupport. This makes it possible
to identify apnoea, hypopnoea and respiratory
flow limitations.
The exhalation system before the mask prevents
accumulation of CO2-enriched expired air in the
hose system.
To make it easier for the patient to go to sleep, an
automatic Softstart system is incorporated for the
APAP and CPAP modes. When this is switched on,
the pressure is reduced to the Softstart pressure set
by the physician. The therapy pressure then
gradually increases to the set value. The period for
the pressure rise can be set in 5-minute steps
between 0 and 30 minutes. The automatic
Softstart system can be locked out by the
physician.
Auto switch-on can be activated in APAP and
CPAP modes. The device can then be switched on
by breathing into the mask. If there is no pressure
for about 5 seconds (e.g. because the mask is
taken off), the SOMNOset switches off
automatically.
If the power supply is interrupted and then
restored, data recording starts afresh in all modes.
In that case, pressure adjustment and event
evaluation restart in the Autotitration and APAP
modes. In the Pressure Profile and CPAP modes,
titration or therapy are continued in the status that
was active before the interruption. The stored data
remain recorded despite the interruption.
8Description
2.6 Functional description of SOMNOsoft +
SOMNOsoft + works on the principle of an elec-
trically powered flow generator delivering an electronically controlled constant pressure level.
A radial fan draws in ambient air through a filter
and conveys it to the device outlet port. From here
the air flows through the hose system and mask to
the patient.
The airway pressure is registered via the pressure
measurement tube in the mask.
The pressure present in the mask is shown in the LC
display. The microprocessor-controlled flow generator regulates the pressure at the set value.
In softPAP mode the respiratory flow curve is analysed continuously to ensure timely recognition of
the transition between inhalation and exhalation.
Before the transition to exhalation the therapy pres
sure is reduced to make it easier to breathe out.
The size of this pressure reduction can be set in two
stages: “slight” (stage 1) and “normal” (stage 2).
This increases patient comfort. Before the next inhalation phase, the pressure is raised to the therapy figure once again.
If apnoea or valid flow limitations occur while the
patient is sleeping, the softPAP mode is automatically deactivated for the relevant period. If the respiratory frequency is too high, the softPAP mode is
also temporarily deactivated. However, the therapy pressure remains reduced during this period.
The device also records a respiratory flow signal
that can be output to a PSG system or read off with
the aid of SOMNOsupport. SOMNOsoft+ recog-
nises apnoea, hypopnoea and respiratory flow
limitations. This permits efficient therapy control.
The exhalation system in front of the mask prevents
accumulation of CO2-enriched expired air in the
tube system.
An automatic Softstart system is provided to enable
the patient to go to sleep more easily. When this
is switched on, the pressure is reduced to the Softstart pressure set by the physician. The therapy
pressure then gradually increases to the set value.
The period for the pressure rise can be set in 5minute steps between 0 and 30 minutes. The automatic Softstart system can be locked out by the
-
physician.
Auto switch-on can be activated on the
SOMNOsoft + The device can then be switched
on by breathing into the mask. If there is no pressure for about 5 seconds (e.g. because the mask
is taken off), SOMNOsoft + switches off automatically.
Following a power failure and resumption of the
power supply, the status of SOMNOsoft + is the
same as it was before the power failure. The
stored data remain preserved.
Description9
3. Servicing
3.1 Intervals
The two filters 45 and 46 need to be checked regularly for soiling.
•Coarse dust filter 45 must be changed every 6
months.
•Fine filter 46 must be changed at least every
250 operating hours.
•The pressure measurement tube 11 must be
changed at least every 6 months – and more
frequently if soiling is heavy.
The following preventive maintenance measures must also be carried out:
1. Service after every 5000 operating hours
(service symbol 23 appears in display and
must be reset after every service).
2. Service after a maximum of 2 years (see
service label on back of device).
3. The parts exposed to the air flow must be
cleaned every 10,000 hours or 4 years.
4. Every 2 years the battery on the Smartboard or
Softboard must be replaced.
After every service, replace the service label 87
with one bearing the new data (see “9. Spare
parts” on page 46). Use a hole punch or nail
scissors (V-shaped notch) to mark the month. Affix
the new service label to the left of the filter cover.
For hygiene reasons we recommend:
•replacing the complete mask system every 6 to
12 months depending on soiling, and
•replacing the expiration system in accordance
with the relevant operating instructions.
See the section on “Cleaning” in the relevant
operating instructions.
3.2 Filter change
3.2.1 Coarse dust filter
1. To ensure that no water runs into the device 1
when changing the filters, disconnect the
humidifier 35 from the device. Also observe
the operating instructions supplied.
2. Slightly raise the rear of the device or push the
back of the device off the edge of the table a
little, so that you can reach under the filter
cover 29.
10Servicing
87
3. Press with your thumb on the underside of the
filter cover 29 and lift the cover off.
4. Pull out the coarse dust filter 45 with your
finger.
5. You can wash a soiled coarse dust filter in
clean water and reuse it after drying
thoroughly.
6. Insert the clean coarse dust filter 45.
7. Insert the filter cover 29 in the opening in the
housing with its upper edge first.
8. Using a finger to press in the catch on the
underside of the cover, fit the cover so that it
clicks into place.
9. If appropriate, fit the humidifier. Observe the
section “3.4 Humidifier” in the operating
instructions.
3.2.2 Fine filter
1. Remove the coarse dust filter 45 as described
under “3.2.1 Coarse dust filter”.
2. Remove the fine filter 46.
The fine filter must be changed if it has turned dark
grey, and in any case after 250 operating hours.
In the latter case the filter change symbol
appears.
29
45
3. Insert the new filter and filter cover 29 in
reverse order.
4. To clear the filter change symbol, hold down
the on/off button 24 when switching on the
device until the symbol disappears from the
display.
If the fine filter is changed because of soiling
before 250 operating hours are reached, the hour
counter must be reset to zero:
5. To do so, hold down the On/Off button 24
when switching on the device. After about 3
seconds the filter change symbol lights up and
after another 3 seconds it disappears. Now
you can release the button.
3.3 Cleaning the device
The parts exposed to the air flow must be cleaned
and disinfected every 10,000 hours or every 4
years. This must be done as described in Chapter
“4.3 Cleaning and disinfecting on change of
patient” on page 13.
46
45
After every service a test must be performed in
accordance with Chapter “5. Test the device” on
page 15.
Servicing11
3.4 Resetting the service symbol
After every service/repair the service hours counter must be reset to “0”, and the service symbol 23 in the
display must be cleared. A new service label (current year + 2 years) must also be affixed to the back of the
device.
1. To reset the service hours counter to “0” or to
switch off the service symbol, hold down the
Softstart button 26 with the device switched off
until A0/A1 or soft0/soft1/soft2
appears in the display.
2. Now press the On/Off button 24 as well until
an S (for “service key”) appears.
3. Now release both buttons.
4. Briefly pressing the On/Off button 24 clears
the service key. If you want set the service
symbol again, press the On/Off button 24
again.
23
26
P
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24
3.5 Disposal
Do not dispose of the device with
domestic waste. To dispose of the device
properly, please contact a licensed,
certified electronic scrap disposal
merchant. This address is available from
your Environment Officer or from your
local authority.
23
SOMNOsoft
+
24262523
24
1 hPa 1 cmH2O
26
12Servicing
4. Hygienic preparation
4.1 Cleaning and disinfecting after use
Caution!
This point is described in Chapter 5 “Cleaning and Disinfection” of the SOMNOsmart 2, SOMNOset or
SOMNOsoft + operating instructions.
Hygienic preparation of the device after repairs and for a new patient is described below.
4.2 Cleaning and disinfection after repair
In the event of repairs the following work should be performed by the qualified dealer.
Caution!
Be sure to follow the disinfectant manufacturer’s
instructions (8.3, page 45). You are
recommended to wear suitable gloves (e.g.
household or disposable gloves) during
disinfection procedures.
•Wipe outside of device and power cord with
TERRALIN disinfectant.
•Clean hoses, cap and mask as described in the
operating instructions or replace with new parts
(depending on condition).
•Open device as described in 7.2.
•Replace the coarse dust filter and fine filter 45
+ 46 as described in Chapter 3.2.
•Clean the inside of the device and filter
housing with a vacuum cleaner. Thoroughly
clean any specially dirty parts.
•Close device as described in 7.3.
4.3 Cleaning and disinfecting on change of patient
When making the device hygienic for a new patient, the following steps must be carried out:
Caution!
Be sure to follow the disinfectant manufacturer’s
instructions (8.3, page 45). You are
recommended to wear suitable gloves (e.g.
household or disposable gloves) during
disinfection procedures.
•Wipe outside of device and power cord with
TERRALIN disinfectant. Dispose of hose and
mask system and carrying bag, and replace
with new parts.
•Open device as described in Chapter 7.2.
•Clean the inside of the device and filter
housing with a vacuum cleaner. Thoroughly
clean any specially dirty parts.
•Replace the coarse dust filter and fine filter 45
+ 46 as described in Chapter 3.2.
•Spray-disinfect device outlet 7, filter holder 44
and filter cover 29twice with “MIKROZID
LIQUID”, taking care to wait for the prescribed
disinfection time in each case. At the
beginning of the disinfection time, also wipe
the accessible surfaces with a cloth moistened
with “MICROZID LIQUID”.
Caution!
No disinfectant residues must be left in the
pressure measurement stub of the device outlet
port 7; if necessary the pressure measurement
stub must be blown dry.
•Replace OPS delivery tube 61 (only
SOMNOsmart 2 and SOMNOset).
Hygienic preparation13
•Open box 62/63 as described in Chapter
7.14.
•Replace both labyrinths 64 and 66, motor
frame 65, box damper insert 69 and cover
damper insert 68. Remove fan cap from fan.
•Spray-disinfect the box, fan and fan cap twice
with “MIKROZID LIQUID”, taking care to wait
for the prescribed disinfection time in each
case. At the beginning of the disinfection time,
also wipe the accessible surfaces with a cloth
moistened with “MICROZID LIQUID”.
•Spray-disinfect fan blade twice with
“MIKROZID LIQUID”. The fan blades must not
be exposed to any mechanical forces.
•Dip-disinfect connecting tube 59 mit
“GIGASEPT FF”.
•Close box 62/63 again as described in
Chapter 7.14.
•Alternatively, box 62/63 can be replaced by
an exchange box (see “7.13 Replacing
Smartbox/Comfortbox” on page 35).
•Close appliance as described in Chapter 7.3.
Wipe housing and power cord with TERRALIN
disinfectant.
•Set service symbol and clear it again, to reset
the service hours counter to “0” (see “3.4
Resetting the service symbol” on page 12).
•Test the device.
•Use SOMNOsupport to clear the patient data
stored in the device. Observe the relevant
operating instructions.
4.4 Cleaning and disinfecting the SOMNOclick/SOMNOclick 300
after use
This point is described in Chapter 4 “Cleaning and Disinfection” of the SOMNOclick or SOMNOclick 300
operating instructions.
4.5 Cleaning and disinfecting the SOMNOclick/SOMNOclick 300
on change of patient
When making the device hygienic for a new patient, the following steps must be carried out:
•For hygiene reasons we recommend replacing
the plastic parts after a maximum of 2 years’
use. The spare parts list can be found in the
SOMNOclick/SOMNOclick 300 operating
instructions (WM 16719).
•If plastic parts and heating element are badly
soiled or covered with lime scale, offer the
customer a new device, otherwise:
Proceed as described in Chapter “4. Hygienic
preparation” of the SOMNOclick/
SOMNOclick 300 operating instructions
(WM 16719).
14Hygienic preparation
5. Test the device
5.1 General
Important
A test is required after every service or repair.
Please enter the following figures in your service
record sheet (see Page 53):
For SOMNOsmart 2: operating hours, humidifier
level, Softstart time and Softstart initial pressure,
and the patient’s pressure limits and pressure rise
rate as shown in the patient pass.
For SOMNOset: operating hours, humidifier level,
Softstart time and Softstart initial pressure, and the
patient’s pressure limits and pressure rise rate as
shown in the patient pass, and also the mode.
For SOMNOsoft+: operating hours, humidifier
level, Softstart time and Softstart initial pressure,
CPAP pressure and mode.
5.2 Performing the check
If the test reveals faults or deviations from the
specified values, the device must not be used
again until the faults are rectified.
To find out what may be causing the faults and
how to remedy the malfunction, see Chapter „6.
Troubleshooting“ on page 20.
5.2.1 Checking the power cord
1. Check the power cord 3.
Make sure that
– the insulation is sound,
– the cable is undamaged,
– there are no loose connections.
2. If necessary, change the power cord 3.
5.2.2 Checking the housing
Check the general condition of the housing.
– If the housing is damaged or faulty, replace
the relevant side of the device (see „7.15
Replacing lower part of housing“ on
page 41 or „7.16 Replacing upper part of
housing“ on page 42).
Test the device15
5.2.3 Checking display
1. Check that the fascia film of the control panel
5 is flat all over and firmly in place. If it is not,
replace the fascia film (see “7.5 Replacing the
fascia film” on page 26).
2. Now fix up the power supply by connecting
one end of the power cord 3 to the device and
the other to the wall socket.
3. Press the On/Off button 24. The LC display 21
appears.
4. Briefly open and close the device outlet port.
The LC display changes.
5. Switch off the device with button 24. The day’s
therapy duration appears briefly in the LC
display 21. Then only “0” is left showing on the
LC display 21.
5.2.4 Checking pressure and button functions
1. Assemble the device ready for use with hose
system 12, mask 14 and power cord 3
attached.
Note:
If the SOMNOset is in Autotitration or Pressure
Profile mode, switch to APAP or CPAP.
2. With the device switched off, press the
Softstart button 26 repeatedly until the current
auto switch-on setting (A0 or A1) appears in the
display.
Note:
if the exhalation relief setting (soft0/soft1/
soft2) appears in the display, first press the
humidifier button 27 to switch to the auto
switch-on setting.
3. If necessary, press the On/Off button 24 to
change the setting to A1.
– The device will now be switched on
automatically as soon as breathing through
the mask starts (pressure > 0.5 hPa),
– When the mask is removed, the device must
switch off after 5 seconds.
21
21
2624215
24
27
P
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26
4. The day’s therapy duration appears briefly in
the LC display 21. After that, only “0” is left
showing on the LC display 21.
5. Press the On/Off button 24 to switch the
device on. For 3 seconds the display shows
the total use time 17.
6. Close the opening of the mask, e.g. with your
thumb or hand, and hold it closed.
16Test the device
SOMNOsoft
2721
27
+
242625
24
1 hPa 1 cmH2O
26
7. If Softstart is switched on, switch it off by
pressing button 26. The radial fan delivers air
through the hose system to the mask, and the
current pressure in hPa is shown in the LC
display 21.
8. Compare the pressure shown in the LC
display 21 with the prescribed minimum
pressure limit. After approx. 1 minute the
difference must be not more than ± 0.2 hPa.
9. Use a pressure gauge to check the set pressure
at the connection stub of the mask.
– To do so, remove one stopper.
– Connect a pressure gauge to the open
connection stub.
Compare the reading with the figure shown on
the LC display 21. After approx. 1 minute the
difference must be not more than ± 0.4 hPa.
Stopper
10. Press button 26 to switch on Softstart. The
Softstart symbol 16 appears and the LC
display 21 shows the Softstart time. At the
same time the pressure is reduced to the initial
Softstart pressure.
The Softstart function can be locked out by the
physician. In that case the Softstart initial
pressure shown in the display is “– –”.
16
16
21
16
P
SOMNOsoft
24
26
ini
242621
+
1 hPa 1 cmH2O
24
21
26
Test the device17
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