30 Using the ventilator
The alarm is set off when airway resistance is exceed-
ed in two successive inspiration phases. This is to
prevent false alarms caused by coughing for
example.
Disconnection alarm
The rise in pressure during the inspiration phase is
less than 8 mbar. This is generally due to an interrup-
tion in the breathing system.
The alarm is set off when the rise in pressure is less
than 8 mbar in two successive inspiration phases.
< 2,7 bar O
2
alarm
Oxygen pressure at the pressure connection to
MEDUMAT Standard has dropped to less than
2.7 bar. The reason is usually an almost empty
oxygen cylinder.
In this case MEDUMAT Standard will no longer func-
tion correctly because the operating parameters will
not lie within the permissible limits.
Alarm
The battery is failing. Failure of the automatic venti-
lation function must be expected. Immediate steps
must be taken to provide alternative ventilation
(note “5.11 Alternative ventilation procedures“ on
page 32).
Cancelling acoustic alarm
The acoustic alarm can be temporarily cancelled by
pressing alarm mute button:
Stenosis: 30 Seconds
Disconnection: 30 Seconds
< 2,7 bar O
2
: 30 Seconds
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