56
6-5
Alarms test
Select the following settings.
Test the alarms according to the following instructions.
High pressure alarm test:
Allow the ventilator to operate at the above settings with a test
lung. Press the test lung during inhalation to activate the High pressure alarm. Check that
high pressure alarm is activated on the same breath and inhalation terminates.
Low Vte
and
Low MV
alarms test:
Change MV low alarm limit to 12 l/min. Check that
after a while, first the Low minute volume alarm and then the Low tidal volume should be
activated. Change MV low alarm limit back to 2 l/min.
Low O2 Pressure
and
Low Oxygen alarms test:
Change O2 to 100% and disconnect the
oxygen supply. Check that Low O2 Pressure alarm is activated immediately and Low Oxygen
alarm is activated after a few breaths. Change
the oxygen setting back to 21%.
Low Air pressure alarm test:
Disconnect the air supply. Check that Low Air Pressure alarm
is activated immediately. Connect the air supply line.
Alarm test setting
20 s
Apnea time:
VCV
Mode:
100 b/min
High Rate:
Flow
Trigger Type:
2 b/min
Low Rate:
10 b/min
Rate:
O
2
cmH
40
High Ppeak:
500 ml
Vt:
50 l/min
High MV:
0 %
Pause:
2 l/min
Low MV:
21 %
Oxygen:
1000 ml
High Vte:
1.4 s
Ti:
200 ml
Low Vte:
3 l/min
Ftrig:
O
2
cmH
8
High PEEP:
Decel.
Flow pat.:
O
2
cmH
3
Low PEEP:
100 %
Leak:
