NOTE:
After the end of each breath there is a trigger lockout time
for which the machine will not sense any trigger effort. This
lockout time is equal to
1/4th of the inspiratory time setting
or a maximum of
400
msec.
22.
LOW PRESSURE ALARM
1.
Pull out the breathing tube at the main flow outlet.
2.
Verify that the low pressure alarm sounds and the visual
indicator lights up.
3.
Press the Silence switch and verify that the alarm is silenced
for
a
period of
1
minute.
23.
HIGH PRESSURE ALARM
1.
Adjust the high pressure alarm to
60
cm.H20.
2.
Increase the flow and allow the unit to cycle.
3.
Verify that the high pressure alarm comes on when the high
pressure setting is reached and the breath is cut off.
4.
Verify also that the visual indicator lights up.
24.
EXTERNAL POWER OFF/POWER DISCONNECT ALARM
1.
Pull out the input power cord on the rear of the unit.
2.
Verify that the unit switches over to battery power and BAlT
PWR indicator lights up. Also verify that the Battery power
alarm sounds momentarily and repeats every five minutes.
3.
Connect power cord and verify that the alarms disappear.
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