Dräger Atlan A350 - Page 218

218 Instructions for use | Atlan A300, A300 XL, A350, A350 XL SW 1.0n
Troubleshooting
!! 255 O2 measurement not avail-
able
The ambient air used for cali-
brating the sensor was
impure.
Position the device in an
environment with clean ambi-
ent air.
Wait for the automatic cali-
bration.
There is electromagnetic
interference.
Check for electromagnetic
radiation in the vicinity.
Ambient temperature is too
high.
Check ambient conditions.
! 255 O
2 measurement tempo-
rarily inaccurate
The sensor has not yet
warmed up.
Wait for the automatic cali-
bration.
The ambient air used for cali-
brating the sensor was
impure.
Position the device in an
environment with clean ambi-
ent air.
Wait for the automatic cali-
bration.
!! 255 O
2 sensor failure The O2 sensor in the patient-
gas measurement module is
faulty.
Use substitute O2 monitoring.
Use "ALARM RESET" to
downgrade alarm priority.
Perform the system test.
Call Dräger.
!! 255 O
2 sensor failure The O2 sensor is faulty. Use substitute O2 monitoring.
Use "ALARM RESET" to
downgrade alarm priority.
When the case has been
completed, perform a sys-
tem test.
Replace the sensor cell if
necessary.
If the problem persists, call
Dräger.
!! 255 O
2 sensor not ready A new O2 sensor cell was
inserted.
Wait for the O2 sensor to
warm up.
Perform a system test and
calibrate the O
2 sensor.
Use "ALARM RESET" to
downgrade alarm priority.
The O
2 sensor calibration is
invalid.
Perform a system test and
calibrate the O
2 sensor.
!!! 210 O
2 supply low Central supply pressure and
cylinder pressure are low.
Check central O2 supply or
use cylinder.
Use "ALARM RESET" to
downgrade alarm priority.
! 100 On/Standby key stuck Key is stuck or was pressed
for more than 10 seconds.
The therapy will continue with
current settings.
If the problem persists, call
Dräger.
Priority Alarm Cause Remedy