Weinmann BiLevel-ST VENTImotion WM 24800 Setup guide

Service and
Repair Instructions
VENTI motion
BiLevel-ST Home Ventilation Unit
WM 24800
VENTI logic
BiLevel-ST Home Ventilation Unit
WM 27000

Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1. Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Description of device . . . . . . . . . . . . . . . . . . . . 10
2.1 Intended use for VENTI motion / VENTI logic . 10
2.2 Functional description . . . . . . . . . . . . . . . 10
– Provision of therapy pressure
– Therapy modes
– Other functions
3. Hygiene treatment . . . . . . . . . . . . . . . . . . . . . 11
3.1 Cleaning and disinfecting in use . . . . . . . . 11
3.2 Cleaning and disinfecting on repair . . . . . 11
3.3 Cleaning and disinfecting for a
patient change . . . . . . . . . . . . . . . . . . . 11
3.4 Clean and disinfect humidifier during use . . 12
3.5 Clean and disinfect humidifier on patient
change . . . . . . . . . . . . . . . . . . . . . . . . 12
3.6 Clean and disinfect the VENTI power . . . . . 12
3.7 Clean and disinfect the VENTI- O
2
. . . . . . . 12
4. Test the device . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 General . . . . . . . . . . . . . . . . . . . . . . . . 13
4.2 Test equipment . . . . . . . . . . . . . . . . . . . 13
4.3 Preparation for testing . . . . . . . . . . . . . . . 13
– Check power supply cable
– Check housing
– Connection to VENTI support
4.4 Enter device data . . . . . . . . . . . . . . . . . 14
4.5 Test temperature calibration and
calibration status . . . . . . . . . . . . . . . . . . 14
4.6 Test battery voltage . . . . . . . . . . . . . . . . 15
4.7 Test interface with the VENTI click . . . . . . . 15
4.8 Check target pressure values
5, 20 and 35 hPa . . . . . . . . . . . . . . . . . 15
4.9 Test flow measurement . . . . . . . . . . . . . . 16
4.10 Test leaktightness . . . . . . . . . . . . . . . . . 17
4.11 Test clock function . . . . . . . . . . . . . . . . . 17
4.12 Test the interface with the VENTI- O
2
. . . . . 18
4.13 Test interface with the VENTI power . . . . . 18
4.14 Test noise . . . . . . . . . . . . . . . . . . . . . . 19
4.15 Test all keys, the rotary knob and
115 V mode . . . . . . . . . . . . . . . . . . . . 19
4.16 Test display incl. backlighting and
contrast, the LEDs and the alarm . . . . . . . 20
4.17 Test equipment and accessories
(system components) . . . . . . . . . . . . . . . 21
– Check function of humidifier
– Function check VENTI- O
2
4.18 Once tests are complete . . . . . . . . . . . . . 22
5. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.1 Intervals . . . . . . . . . . . . . . . . . . . . . . . . 23
5.2 Filter change . . . . . . . . . . . . . . . . . . . . . 24
– Coarse dust filter
– Fine filter
– Reset filter change indicator
– Bacteria filter
5.3 Device cleaning . . . . . . . . . . . . . . . . . . 25
5.4 Reset maintenance symbol . . . . . . . . . . . . 26
5.5 Check the maintenance sticker . . . . . . . . . 27
5.6 Disposal . . . . . . . . . . . . . . . . . . . . . . . 27
6. Malfunctions and rectification . . . . . . . . . . . . . 28
6.1 General faults. . . . . . . . . . . . . . . . . . . . 28
6.2 Internal faults . . . . . . . . . . . . . . . . . . . . 29
– Fault output in clear text
– Coded error messages
7. Repairguide for VENTImotion/VENTIlogic . . . . 31
7.1 General . . . . . . . . . . . . . . . . . . . . . . . 31
7.2 Open device . . . . . . . . . . . . . . . . . . . . 31
7.3 Close the device. . . . . . . . . . . . . . . . . . 32
7.4 Replace mains supply unit. . . . . . . . . . . . 33
7.5 Replace power board . . . . . . . . . . . . . . 34
7.6 Replace box and filter holder. . . . . . . . . . 35
7.7 Replace fan . . . . . . . . . . . . . . . . . . . . . 37
7.8 Replace control board/display . . . . . . . . 39
7.9 Replace battery on control board . . . . . . . 42
7.10 Dismantle device outlet . . . . . . . . . . . . . 42
7.11 Replace encoder (dial) . . . . . . . . . . . . . 44
7.12 Replace fascia film . . . . . . . . . . . . . . . . 45
7.13 Replace bottom part of housing. . . . . . . . 46
7.14 Replace top part of housing . . . . . . . . . . 47
8. Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.1 List of spare parts for
VENTImotion/VENTIlogic . . . . . . . . . . . . 48
8.2 Spare parts required for servicing. . . . . . . 51
9. Tools, test equipment and disinfectants . . . . . . 53
9.1 Tools . . . . . . . . . . . . . . . . . . . . . . . . . 53
9.2 Test equipment and fixtures . . . . . . . . . . . 53
9.3 Disinfectants. . . . . . . . . . . . . . . . . . . . . 54
10. Technical data . . . . . . . . . . . . . . . . . . . . . . . . 55
10.1 Diagram of pneumatic system . . . . . . . . . 57
10.2 Safety distances. . . . . . . . . . . . . . . . . . 57
11. Technical amendments . . . . . . . . . . . . . . . . . . 58
12. Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
12.1 Repair and service protocol . . . . . . . . . . 59
12.2 Test protocol . . . . . . . . . . . . . . . . . . . . 60

Introduction 3
Introduction
The objective of this service and repair guide is to
familiarize you, an expert, trained specialist, with the
VENTImotion and VENTIlogic in terms of function,
technology, servicing and repair. This will enable
you to train your customers properly, eliminate
faults yourself, perform the function checks specified
by the operating instructions and carry out any re-
pairs in accordance with this service and repair
guide.
In the event of a claim under warranty, return the
devices to Weinmann.
To allow warranty or goodwill applications to be
processed, please also send the final customer's
proof of purchase (invoice).
Repairs may be performed only by Weinmann or
by expert, trained specialists.
You are responsible for repairs carried out yourself
and for their warranty!
Use only original Weinmann spare parts for repair.
Remember:
your customer trusts you and is relying on your abil-
ity to do the job, just as you rely on Weinmann.
Note
The following information can be found in the operating instructions for the devices:
• safety rules
•setting up device
• operation
• cleaning and disinfecting in use
• warranty

4Overview
1. Overview
29 Rating plate
31 Carrying bag
28 VENTIpower
32 VENTI-O2
VENTImotion/VENTIlogic
2Power supply
cable
6Connection for humidifier
11 Pressure
measurement
hose
12 Hose system
8Sealing plugs (2x)
13 Exhalation
system
5Control panel and displays
4Serial interfaces
15 Headgear
7Device outlet
14 Mask
10 Adapter
26 Humidifier key with LED
27 Softstart key/manual start of analysis
(VENTIlogic only)
22 On/off key
25 Menu key
1Bacteria filter
9Drying adapter
3Handle
21 Alarm acknowledgement key with LED
23 Dial
24 Operating keys
20 Connection for
O2supply valve
VENTI-O2
19 Connection for rechargeable
battery VENTIpower
16 Filter compartment cover, air inlet
18 Cable securing
clip
17 Supply
connection
30 VENTIclick
71 Service label
72 Safety test label (Germany only)

Overview 5
1 Bacteria filter
To protect the device from contamination, especially if the device is being used by
several patients.
2 Power supply cable
For connecting the therapy device to the mains power supply.
3 Handle
For transporting the device.
4 Serial interfaces
For connecting to devices, for display, evaluation.
5 Control panel and displays
For controlling and monitoring the therapy device and the connected accessories.
6 Connection for humidifier
For connecting the VENTIclick humidifier available as an accessory.
7 Device outlet
Respiratory air flows out from here to the patient via the hose system and nasal mask.
8 Sealing plugs (2x)
For sealing the pressure measurement hose during cleaning.
9 Drying adapter
Required to dry the hose system with the therapy device and for function check.
10 Adapter
For connecting the hose system to the device outlet.
11 Pressure measurement hose
For measuring the pressure prevailing in the mask.
12 Hose system
The air flows to the mask through the hose system. The hose system consists of creased
hose, pressure measurement hose and adapter.
13 Exhalation system
Carbondioxide-enriched expired air escapes here during therapy.
14 Mask
Respiratory air at the necessary therapy pressure is administered to the patient via the
mask.
15 Headgear
For correct and secure positioning of the mask.
16 Filter compartment cover, air inlet
For covering and securely positioning the coarse and fine dust filter.
17 Supply connection
This is where the power supply cable is attached to the device.
18 Cable securing clip
Prevents the device being disconnected from the power supply inadvertently.
19 Connection for rechargeable battery VENTIpower
For connecting the VENTIpower mobile power supply available as an accessory.
20 Connection for O2supply valve VENTI-O2
For connecting the VENTI-O2oxygen supply valve available as an accessory.
21 Alarm acknowledgement key with LED
The alarm acknowledgement key is for temporarily muting alarms. The LED provides a
visual display of alarms.
22 On/off key
For switching the therapy device on and off.
23 Dial
Central control of the therapy device, for navigating in the menu.

6Overview
24 Operating keys
For rapid setting by a physician, disabled in patient mode.
25 Menu key
For switching to and fro between the standard display and the menu.
26 Humidifier key with LED
For switching the humidifier on and off or for setting humidifier stage. Six levels are
available. The LED indicates whether the humidifier is activated.
27 Softstart key/manual start of analysis (VENTIlogic only)
For activating Softstart and for setting Softstart time up to the maximum Softstart time set
in the menu.
In TA mode (VENTIlogic only), this key is used to start an analysis phase manually.
28 VENTIpower
Available as an accessory to provide a mobile power source for the therapy device.
29 Rating plate
Provides information about the device, such as serial number and year of manufacture.
30 VENTIclick
Available as an accessory for humidifying and heating respiratory air.
31 Carrying bag
For transporting the therapy device.
32 VENTI-O2
Available as an accessory, for introducing oxygen to the mask.
71 Service label
Indicates when maintenance is next due.
72 Safety test label (in Germany only)
Indicates when the next safety check in accordance with §6 of the German law relating
to owners of medical devices [Medizinprodukte-Betreiberverordnung] is due.
Standard display during therapy
1 Status line
This is where information about the status of the device is displayed, such as filter
change or maintenance due.
2 Padlock symbol
Indicates whether physician functions are enabled (padlock open) or disabled (padlock
closed). The padlock is not displayed in patient mode.
3 Respiratory phase switch indicator
Indicates whether the current respiratory phase switch is spontaneous or mandatory
(spontaneous: S, mandatory: T); the indicator switches from left (inspiration) to right
(exhalation) depending on respiratory phase; spontaneous exspiration is shown here.
4 Access to menu
The key next to this menu item is used to switch to and fro between the menu and the
standard display.
1Status line
7Active ventilation
mode
5Bar chart for pressure indicator
4Access to menu
3Respiratory phase switch
indicator
2Padlock symbol
6Ventilation parameters

Overview 7
5 Bar chart for pressure indicator
For graphical display of pressure.
6 Ventilation parameters
The relevant current ventilation parameters are displayed depending on the active
mode.
7 Active ventilation mode
The active ventilation mode is displayed at this point in the status line.
Symbols used in the display
Abbreviations used in the display
Symbol Significance
Status line:
Softstart active, remaining time faded in
Filter change required
Maintenance required
Acoustic signal for the IPAPmin and VTmin alarms mute
Alarm for IPAPmin and VTmin alarms deactivated
Physician functions enabled
Physician functions disabled
Fan off (with VENTImotion, only available from software version 6.0)
Main window
Low-priority alarm triggered
Medium-priority alarm triggered
Symbol Significance
Status line:
TA TA mode active (VENTIlogic only)
SS mode active
ST ST mode active
TT mode active
SX SX mode active
SXX SXX mode active
CPAP CPAP mode active
+V Volume compensation activated (follows mode: e.g. SXX+V)
AADevice in TA mode, automatic analysis phase in progress
(VENTIlogic only)
AMDevice in TA mode, manual analysis phase in progress
(VENTIlogic only)
Main window (monitor)
IPAP Inspiration pressure
EPAP Expiration pressure
hPa Pressure shown in hectopascal; 1.01973 hPa correspond to 1 cm H2O

8Overview
fRespiratory frequency
SSpontaneously-triggered respiratory phase switch
TCompulsorily-triggered respiratory phase switch
Main window ("Statistics" menu item):
ΔΔ
ΔΔpMaximum rise in pressure due to volume compensation
VVolume
MV Per minute volume
Leak System leak (mask, exspiration system, hose system, device)
fRespiratory frequency
Ti/T Proportion of inspiration time in a respiratory cycle
Sins Proportion of spontaneous inspiration (only when mean values
displayed)
Sexs Proportion of spontaneous exspiration (only when mean values
displayed)
Symbol Significance

Overview 9
Menu structure in Physician mode
Statistics
Appliance usage
Means
Actual values
Mode
T mode
S mode
• On/Off/Sound off
• IPAPmin
• Vtmin
Alarms
SX mode
SXX mode
CPAP mode
ST mode
Volume comp.
Pressure rise
• Inspiration
• Expiration
Triggers
• On/Off
• VT
• p
Device
configuration
Activate patient modePatient mode
• Lock on/off
• Tmax
• IPAP start
• EPAP start
Softstart
In SXX mode
• TTi
• TTi
• TTe
In SX mode:
• TTi
• TTi
Target values
Language
Reset operating time
Reset therapy values
Reset maintenance counter
Reset filter change counter
Set date/time
Back to monitor
Back
Norwegian
Italian
French
English
German
• Inspiration
• Expiration
TA mode
(VENTI
logic
only)
TA statistics
(VENTI
logic only) TA setting
(VENTI
logic only)
Values to be set:
e
Reset device usage

10 Description of device
2. Description of device
2.1 Intended use for VENTImotion/VENTIlogic
VENTImotion and VENTIlogic are home ventilation
devices for the non-invasive, non-life support venti-
lation of adult patients with respiratory insufficiency
in whom there is evidence of autonomous respira-
tory drive. This corresponds to the following clini-
cal pictures:
•restrictive and obstructive ventilation disorders
like paresis of the diaphragm, OSAS, COPD
• disorders of the respiratory mechanism like
scoliosis, deformity of the thorax
•neurological, muscular and neuromuscular dis-
orders
• central respiratory regulation disorders
VENTImotion and VENTIlogic are not suitable for
life-support use.
Use the device only for the purpose described
here.
2.2 Functional description
Provision of therapy pressure
An electronically-controlled fan draws in ambient
air through a filter and delivers it to the device out-
let. From here, the air flows through the hose sys-
tem and the mask to the patient.
Sensors detect the pressure in the mask and in the
hose system and also the respiratory phase switch
(trigger point). The fan accordingly provides the
IPAP and EPAP pressures set by the doctor.
Therapy modes
The device can be operated in the following ther-
apy modes: CPAP, S, ST, T, SX, SXX, TA (TA with
VENTIlogic only).
In time-controlled mode T and in assisted-controlled
mode ST, your doctor can set respiratory frequency
in the range from 6 to 45 breaths per minute and
inspiration time in the range from 20 % to 67 % of
the respiratory period.
In assisted modes S, SX and SXX and in assisted-
controlled mode ST, your doctor can select one of
6 trigger levels for both inspiration and exhalation.
Your doctor can switch off the trigger for exhala-
tion. Exhalation is then time-controlled.
In the adaptive, controlled TA mode, the device
automatically adapts to your personal breathing
rhythm and supplies the therapy pressure in exactly
the same rhythm.
If no breath is taken into the device in S mode,
pressure is switched at a minimum frequency of
6 breaths per minute.
You can activate volume compensation. Minimum
volume and maximum pressure rise are set for this
purpose. If the minimum volume is undershot, the
device automatically increases pressure continu-
ously until the set maximum pressure (therapy pres-
sure + max. pressure rise) is reached.
Other functions
The Softstart function makes it easier to fall asleep.
Your doctor sets initial pressures for inspiration and
exhalation which continuously rise to the therapy
pressures during the Softstart phase. This function
can be disabled by the doctor.
The therapy device has an auto switch-on system.
If this is activated, the device can be switched on
by a breath being taken into the mask. The device
is still switched off using the on/off key .
The display shows therapy mode and, depending
on mode, the values currently being applied for
CPAP/IPAP and EPAP and for respiratory frequen-
cy (f). Spontaneous or mechanical respiratory
phase switches are also displayed and the pres-
sure change shown in the form of a graph.

Hygiene treatment 11
3. Hygiene treatment
3.1 Cleaning and disinfecting in use
Caution!
This item is described in section “5. Hygienic treatment” of the therapy device operating instructions.
There follows a description of the hygiene treatment of the device in the event of repair and in the event of
a patient change.
3.2 Cleaning and disinfecting on repair
A dealer should perform the following during a repair!
Caution!
It is essential to follow the instructions issued by the
manufacturer of the disinfectant (9.3, page 54). It
is recommended that you use suitable gloves for
disinfecting (e.g. household rubber gloves or dis-
posable gloves).
•Wipe down outer housing and power supply
cable with TERRALIN.
• Clean hose, headgear and nasal mask in ac-
cordance with the operating instructions or re-
place with new parts (depending on condition).
• Open device as per item 7.2.
• Replace filters (coarse dust and fine filter).
• Clean out the inside of device housing and
filter housing using a vacuum cleaner, clean
extremely soiled areas.
• Close device as per item 7.3.
3.3 Cleaning and disinfecting for a patient change
If the device is to be hygiene-treated for another patient, perform the following steps.
Caution!
It is essential to follow the instructions issued by the
manufacturer of the disinfectant (9.3, page 54). It
is recommended that you use suitable gloves for
disinfecting (e.g. household rubber gloves or dis-
posable gloves).
•Wipe down outer housing and power supply
cable with TERRALIN. Dispose of hose and
mask system, headgear, exhalation system
and carrying bag WM 24888 and replace
with new parts.
• Open device as per section 7.2.
• Clean out the inside of the device housing,
box and filter holder using a vacuum cleaner,
clean extremely soiled areas.
• Replace coarse and fine dust filters 39 + 40.
• Open box 58 as per section 7.7.
• Spray-disinfect box, lid, fan, fan flap, motor
bearing, fan cable, filter holder 37 and filter
compartment cover 16 twice with MIKROZID
LIQUID, in each case waiting the prescribed
time for the product to take effect. In addition,
at the start of the time for the product to take
effect, wipe down accessible areas with a
cloth wetted in MIKROZID LIQUID.
• Replace the following parts with new parts:
– hose system WM 24130
– filters WM 24870 and WM 24880
– pressure and flow measurement hoses
WM 24324, WM 24835
– hose, pressure side WM 24852

12 Hygiene treatment
– device outlet, complete, WM 24025
– labyrinths WM 24897
– decoupling tube WM 24028
– motor frame WM 24898
– cushioning insert, box WM 24874
– fan box gasket WM 24868
– filter holder gasket WM 24151
– hose, intake side WM 24809
– foam for expansion space WM 24171
– foam for filter holder WM 24155
– countersunk screw ISO 7045-M4x6-
V2A-H with Tuflok
• Seal box 58 again as per section 7.7.
• Alternatively, the box 58 can be replaced by
a reconditioned box as described in section
"7.6 Replace box and filter holder" on
page 35.
• Insert device outlet WM 24025
• Replacing the WM 24837 control board
Note: This is necessary because the flow sen-
sor located on the control board cannot be
sterilised.
• Close device as per item 7.3, disinfect outer
housing and power supply cable with
TERRALIN wipes.
• Reset maintenance symbol to set the mainte-
nance indicator to "0" (see "5.4 Reset mainte-
nance symbol" on page 26).
• Test the device.
• Delete patient data stored in the device as
described in the hospital manual for the
VENTImotion.
3.4 Clean and disinfect humidifier during use
This item is described in section "4. Hygiene treatment" in the VENTIclick operating instructions.
3.5 Clean and disinfect humidifier on patient change
If the device is to be hygiene-treated for another patient, perform the following steps.
•For hygiene reasons we recommend replacing
plastic parts after a maximum period of use of
2 years. The spare parts list can be found in
the operating instructions for the VENTIclick.
• If plastic parts and the heating element are
heavily soiled or coated in limescale, offer a
new device, otherwise:
proceed in accordance with section "4. Hy-
giene treatment" in the operating instructions
for VENTIclick.
3.6 Clean and disinfect the VENTIpower
This item is described in section "4. Hygiene treatment" in the VENTIpower operating instructions.
3.7 Clean and disinfect the VENTI-O2
This item is described in section "4. Hygiene treatment" in the VENTI-O2operating instructions.

Test the device 13
4. Test the device
4.1 General
Important!
The device must be subjected to the following test fol-
lowing every repair, maintenance and hygienic treat-
ment in accordance with test instruction WM 24827
and the test protocol. The test can also be used to
assist during troubleshooting.
For the therapy device, enter the operating hours
and all parameters in your service protocol (see
page 59).
If you find faults or deviations from target values
during the test, you must not use the therapy device
again until the faults are eliminated.
The possible causes of the faults and how you elim-
inate malfunctions can be found in section "6. Mal-
functions and rectification" on page 28.
4.2 Test equipment
• Flow measurement device
• Test set WM 23465 incl. 23635 pressure measurement adapter
• PC and PC software VENTIsupport
• Converter box WM 93316
• Connecting cables WM 93312 and WM 96313
• 115 V power source, e.g. travel adapter 230 V/115 V, 200 W
• Test protocol (see "12.2 Test protocol" on page 60)
4.3 Preparation for testing
Check power supply cable
1. Check the power supply cable 2.
Ensure that
– the insulation is OK,
– the cable is undamaged
– and there are no loose contacts.
2. Replace the power supply cable 2if necessary.
Check housing
Check the housing for general condition.
– If the housing is damaged or defective, re-
place the relevant side of the device (see
"7.13 Replace bottom part of housing" on
page 46/"7.14 Replace top part of hous-
ing" on page 47).

14 Test the device
Connection to VENTIsupport
1. Plug the plug of the power supply cable into a socket.
2. Have the test protocol to hand.
3. Connect the serial interface of the therapy device to the PC via the converter box.
4. Start the VENTIsupport program.
5. Click on the VENTIadjust item in the menu bar.
6. Note the set therapy parameters.
4.4 Enter device data
• Enter the type, number and date of manufac-
ture of the device in the test protocol.
4.5 Test temperature calibration and calibration status
Note
This test is not needed, as it can only be per-
formed on a Weinmann test bench.

Test the device 15
4.6 Test battery voltage
1. Plug the red drying adapter into the device out-
let of the VENTImotion.
2. Turn on the device.
Requirement: if battery voltage is sufficient, no
maintenance symbol should appear in the dis-
play.
3. Replace
4. Turn off the device.
Note
If battery voltage is inadequate, replace the
battery on the control board (see "7.9 Re-
place battery on control board" on page 42).
4.7 Test interface with the VENTIclick
• Check the function of the humidifier (see "
Check function of humidifier" on page 21).
4.8 Check target pressure values 5, 20 and 35 hPa
1. Connect the hose system and the mask to the
therapy device.
2. Pull a plug off the mask.
3. Connect a pressure meter to the opened
connector.
4. Turn on the device.
5. Prepare the therapy device for testing by mak-
ing the following settings in the “Physician”
menu:
– T mode
– Frequency f = 6/min
– Ti:T = 50 %
– EPAP 5 hPA
– IPAP 35 hPA
Plug

16 Test the device
6. Read off the pressure displayed by the mea-
surement device and enter it on the protocol in
the “Measuring result” column.
7. Read off the actual pressure displayed by the
therapy device and enter it on the protocol in
the “Mask” column.
8. Change the setting from EPAP 5 hPA to EPAP
20 hPA.
9. Read off the pressure displayed by the mea-
surement device and enter it on the protocol in
the “Measuring result” column.
10. Read off the actual pressure displayed by the
therapy device and enter it on the protocol in
the “Mask” column.
11. Turn off the device.
Requirement: the values must be within the toleranc-
es quoted in the protocol.
Note
If the values are not within the quoted tolerances,
replace the control board (see "7.8 Replace con-
trol board/display" on page 39).
4.9 Test flow measurement
1. Connect the device output of the therapy de-
vice to the flow measurement device using the
short hose.
2. Turn on the device.
3. Prepare the VENTImotion for testing by making
the following settings in the "Physician" menu:
– T mode
– frequency f = 6/min
– Ti:T = 50 %
4. Set the two pressures so that the device dis-
plays 50 and 100 l/min in the flow window.
For example: IPAP=10 hPa and EPAP=5 hPa
Call up the flow window by pressing the rotary
knob in the "Physician" menu during operation
and selecting “Flow curve” in the Display
menu.
Correct the entry for pressures if necessary.
5. Enter the values displayed by the flow mea-
surement device in the protocol.
Requirement: the values must be within the
tolerances quoted in the protocol.
6. Turn off the device.
Note
If the values are outside the tolerances, re-
place the control board (see "7.8 Replace
control board/display" on page 39).

Test the device 17
4.10 Test leaktightness
1. Plug the test adapter onto the device outlet.
2. Connect the side connection to the pressure
measurement device.
3. Turn on the device. Select CPAP mode in the
"Physician" menu and set a pressure of
20 hPa.
4. Read off the pressure displayed by the pres-
sure measurement device and enter it in the
protocol.
Requirement: the values must be within the tol-
erances quoted in the protocol.
5. Turn off the device.
Note
If the value is outside tolerance, dismantle the
device (see "7.2 Open device" on page 31)
and check for leaks.
4.11 Test clock function
1. Connect the serial interface of the therapy de-
vice to the PC via the converter box.
2. Start the VENTIsupport program.
3. Click on the VENTIadjust item in the menu bar.
4. Select the Set technical data tab.
5. Compare "Device time" and "PC time".
Requirement: the values must change to the
same extent.

18 Test the device
4.12 Test the interface with the VENTI-O2
1. Fit a VENTI-O2valve to the therapy device so
that it is ready to work. The indicator on top of
the valve housing does not light up.
2. Close the opening of the nasal mask, using
your thumb or hand, for example.
3. Switch on the therapy device first, then your
O2supply. After the therapy device has been
switched on, the valve opens with a soft "click"
indicated by the green indicator.
4. You can now set the test flow rate on the flow
display of your oxygen system. If this is not
possible, first check the function of your oxy-
gen system (is the cylinder empty, for example,
or are hoses kinked?).
5. Switch the device off again. The valve audibly
switches to "vent", the indicator goes out.
Note
If the VENTI-O2valve does not react as described,
perform the following measures in sequence and
test again in each case.
• Use a different valve.
• Replace the connecting cable of the power
board/mains supply unit (see "7.5 Replace
power board" on page 34).
•Replace the power board (see "7.5 Replace
power board" on page 34).
4.13 Test interface with the VENTIpower
Note
Before this test is carried out, the therapy device
must have been connected to the mains power
supply for at least 5 minutes.
1. Fit the VENTIpower to the therapy device so
that it is ready to work therapy device. Con-
nect the therapy device to the mains power
supply.
2. Switch on the VENTIpower and then the thera-
py device. VENTIpower is working correctly if
its displays go out, in other words, if
VENTIpower switches to standby mode.
3. Now disconnect the plug of the therapy de-
vice, the device switches off. The power fail-
ure alarm sounds.
Indicator

Test the device 19
VENTIpower is working correctly if its displays
comes on after approx. 4 seconds and the
therapy device starts working again.
4. Now restore the mains power supply to the
therapy device. VENTIpower is working cor-
rectly if its displays go out, in other words, if
VENTIpower switches to standby mode.
5. Switch off both devices.
4.14 Test noise
Note
This test is not needed, as it can only be performed
on a Weinmann test bench.
4.15 Test all keys, the rotary knob and 115 V mode
1. Plug the red drying adapter into the device
outlet.
2. Connect the device to a 115 V power source
and switch on the device.
Requirement: the device must start working.
3. Press all the keys and the rotary knob to test
their function.
4. Turn off the device.
Note
If the keys do not work properly, perform the fol-
lowing measures in sequence and test again in
each case.
• Check fascia film and replace if necessary
(see "7.12 Replace fascia film" on page 45).
•Replace the control board (see "7.8 Replace
control board/display" on page 39).
Note
If the rotary knob does not work properly, perform
the following measures in sequence and test again
in each case:
• Change the encoder (see "7.11 Replace en-
coder (dial)" on page 44).
•Replace the control board (see "7.8 Replace
control board/display" on page 39).
Note
if 115 V mode does not work properly, replace
the mains supply unit (see "7.4 Replace mains sup-
ply unit" on page 33).

20 Test the device
4.16 Test display incl. backlighting and contrast, the LEDs and the
alarm
Note
Before this test is carried out, the VENTImotion must
have been connected to the mains power supply
for at least 5 minutes.
1. Switch on the device.
A beep sounds. Both LEDs come on briefly.
2. Check whether the display is easy to read with
backlighting and that contrast is adequate.
Set contrast
1. Disconnect the power supply plug.
2. Press the humidifier key and the Softstart
key simultaneously.
3. Connect the power supply plug and the socket
again.
4. Turn the rotary knob to select contrast. Activate
contrast by pressing the rotary knob.
Note
If no beep is heard when you switch on, perform
the following measures in sequence and test again
in each case.
•Test the buzzer and replace if necessary (see
"7.13 Replace bottom part of housing" on
page 46).
•Replace the control board (see "7.8 Replace
control board/display" on page 39).
Note
If the contrast cannot be set, perform the following
measures in sequence and test again in each
case.
• Check the display cable.
•Replace the display (see "7.8 Replace control
board/display" on page 39).
•Replace the control board (see "7.8 Replace
control board/display" on page 39).