Dräger Perseus A500 Instructions For Use Manual page 205

Priority Alarm
! 255 Measured gas concentra-
tions out of range
! 255 Measured gas concentra-
tions temporarily inaccu-
rate
! 0 MEDIBUS COM 1 failure
! 0 MEDIBUS COM 2 failure
!! 30 Minute volume high
Instructions for use Perseus A500 SW 2.0n
Cause
The measured values are out
of the measurement range.
The sensor has not yet
warmed up.
The ambient air used for cali-
brating the sensor was
impure.
Communication via the corre-
sponding COM port is inter-
rupted.
The configured baud rate is
not sufficient for the amount
of data to be transferred.
Communication via the corre-
sponding COM port is inter-
rupted.
The configured baud rate is
not sufficient for the amount
of data to be transferred.
Upper alarm limit for the min-
ute volume has been
exceeded.
Flow measurement is inaccu-
rate.
Troubleshooting
Remedy
Check patient condition.
Check the vaporizer setting
and the fresh-gas settings.
Use an alternative gas mea-
surement system.
Perform the system test.
Wait for the automatic calibra-
tion.
Position the device in an envi-
ronment with clean ambient
air.
Wait for the automatic calibra-
tion.
Re-establish the connection.
Use "ALARM RESET" to
acknowledge alarm.
Increase the baud rate.
Check the configuration of the
external device.
Re-establish the connection.
Use "ALARM RESET" to
acknowledge alarm.
Increase the baud rate.
Check the configuration of the
external device.
Check spontaneous breath-
ing.
Check ventilation settings
(e.g., VT, Pinsp, RR).
In Pressure Support, correct
the trigger threshold if neces-
sary.
Check alarm limit.
Replace the expiratory flow
sensor. Perform the leakage
test.
205