Heinen & Löwenstein Leoni Service Manual
Heinen & Löwenstein GmbH
Servicecenter
LEONI baby ventilator service manual
Changing the sintered filters Page 3
Software version check Page 4
Sensor adjustment Page 5
Flow sensor
O2 sensor
Flow adjustment
AIR 10 Lpm. Page 6
O
10 Lpm. Page 7
2
Pressure sensor adjustment
0 cm H2O Page 8
60 cm H2O
Expiration valve adjustment Page 9
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Test report :
1LED’s, Display, Signal Generator Page 10
2
Patient alarms Page 11
3System alarms Page 12
4Flow sensor alarm Page 12
5Pressure measurement Page 13
6Volume measurement Page 14
7Oxygen measurement Page 15
8Safety check Page 15
Intervals
Service and Safety check Page 16
Spare parts Page 17
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2
Changing the sintered filters
.
Hex key : 4mm
Sintered filter : 0207157
.
The NIST connectors are at the rear of the device. Using the hex
key, the fixing screws can be removed in order to take out the filters
(or, in newer versions, the filters can be removed directly with the
hex key).
Software version check:
In the onscreen menu „settings“, press the keys “menu” and
“alarm limits” in parallel and keep pressed for 5 seconds. The
onscreen menu “system diagnosis” is opened and here you take
the readings of the following parameters in the left column:
CHK PO
DAT PO
CHK P1
Ver P1
CHK P2
Ver P2
Check whether the latest version is installed.
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3
Sensor adjustment:
Flow sensor:
Before each adjustment, the device must warm up for 15 min.
Assemble LEONI with its sensors, tubing system and test lung. Use
the calibration key to choose the onscreen menu “sensor check”.
With the tubing system connected, press soft key “flow” and keep
pressed until “sensor check” and then “ADJUSTMENT” shows up.
With the message „sensor adjusted“, adjustment of the flow sensor
has been effected successfully.
O2 Sensor:
Oxygen calibration must always be done almost pressureless, so
first disconnect the expiration tube in order to reach a minimum
constant positive pressure.
In the same onscreen menu now press the „21% O2“ key and keep
pressed until the hourglass starts on the monitor.
21% adjustment has been successful when the hourglass
disappears without error message and you see the message
„sensor adjusted“.
Finally, press the “100%“ key and keep pressed until the hourglass
starts.
100% adjustment has been successful when the hourglass
disappears without error message and you see the message
„sensor adjusted“.
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4
Flow adjustment : AIR
Screwdriver : slot-head 3,5 x 75
For flow adjustment, disconnect the expiration tube and kink it. As
soon as the system alarm starts, acknowledge and mute the system
alarms by pressing the keyswitch and the alarm suppression key in
parallel. In the lower left corner of the monitor a message shows up.
Enter the setup screen via keyswitch and adjust the following
parameters:
Insp.-Flow
20
Basic flow
10
PEEP
10
P.-Insp.
50
Frequency
30
Re-connect the expiration tube but remove the test lung.
Now switch the screen to the graphical mode by means of the menu
key and then set to 20 litres compressed air. Check by displaying
the flow graph in the 20 l setting. (Switch from pressure to flow by
repeatedly pressing the „graphs“ key).
Insp.-Time
1
Oxygen
21%
Do adjust the flow sensor first !
Pressure reducing valves for adjustment are at the rear of the
device. Pressure adjustment is achieved by turning the pressure
reducer set screw. Compressed air is controlled by the pressurereducer next to the NIST-AIR screwing. Turn until the pressure
shown in the screen display corresponds to 20 or 10 litres
respectively.
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