34 Using the ventilator
No Assist: in „Assisted Ventilation“ mode,
patient fails to trigger within the time
window in two consecutive phases.
In addition to all the visual alarms, an acoustic alarm
is triggered. Only in the case of the No Assist alarm,
is the acoustic alarm triggered with a delay of 1 min-
ute.
The patient valve is designed to enable spontaneous
breathing in case of equipment failure.
When is the alarm set off?
An alarm signal is given as soon as any one of the
aforementioned functional failures occurs. The rele-
vant LED starts to flash and an acoustic signal
sounds.
Simultaneous disconnection and drop in oxygen
pressure will initially set off only the < 2,7 bar alarm.
Stenosis alarm
Actual ventilation pressure exceeds the level set with
regulator knob max. ventilation pressure.
Up to Serial No. 1799 MEDUMAT Standard a switches to expiration immedi-
ately if the maximum ventilation pressure is exceeded.
This does not affect the set frequency. Old appliances
(up to serial no.1799) that have been given a new
board in the course of repairs or servicing behave in
the same way as appliances from serial no. 1800 on-
wards.
From Serial No. 1800 MEDUMAT Standard a briefly switches to expiration
whenever the maximum ventilation pressure is ex-
ceeded but tries to continue inspiration in the same
inspiration phase.
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