![Air Liquide MONNAL T75 Скачать руководство пользователя страница 104](http://html1.mh-extra.com/html/air-liquide/monnal-t75/monnal-t75_user-manual_2874996104.webp)
Monnal T75 user manual
Note:
Because it is possible to exhale through the ambient air intake valve in backup ventila-
tion mode, Air Liquide Medical Systems recommends that a bacteria filter always be insert-
ed at the point of connection with the inspiratory limb to avoid contamination of the ventila-
tor. Since exhalation occurs through the inspiratory limb in backup mode, part of the expired
gas is reinhaled. The inspiratory trigger is disabled and a minimum backup frequency is main-
tained. Oversight and monitoring linked to the exhaled flow are altered.
Version B of patient venting applies from
Monnal T75
device no. MT75-05000.
•
A lower serial number identifies the device as version A.
•
A higher serial number identifies the device as version B.
Note:
For more information, contact Air Liquide Medical Systems.
12.1.3 Air/O2 mixture
The O2 concentration of the gases administered to the patient depends on the source connected to
the unit. A distinction is made between O2 network operation and concentrator operation.
Operation on an O2 network
For proper operation, the pressure at the O2 inlet terminals (O2 HP) must be between 2.8 and 6 bar.
The O2 is then filtered via F3.
The proportional solenoid valve (V1) enriches the mixture in oxygen by regulating the flow via the flow
sensor (FS1), where the set-point is proportional to the upstream flow rate (FS2) and depends on the
FiO2 setting.
Note:
Operation at a network pressure between 1.5 and 2.8 bar or between 6 and 7 bar is
possible, but the quality of enrichment might be affected. If the pressure falls below 1.5 bar
or goes above 7 bar, the oxygen supply is cut off by the proportional solenoid valve (V1) and
an oxygen supply error alarm is triggered.
Operation with a concentrator
The ventilator is equipped with a “low pressure” connector for working with a flow meter (intake via the
filter (F2)). The principle of precise control of the O2 concentration applied at high pressure is main-
tained when operating with a low-pressure source, with the device constantly delivering a mix at the
correct FiO2.
Minute volume (L/min)
104