Dräger Perseus A500 Instructions For Use Manual page 192

Troubleshooting
Priority Alarm
! 255 Agent measurement tem-
porarily inaccurate
! 220 Air cylinder almost empty
! 255 Air cylinder empty
! 190 Air cylinder sensor?
!! 150 Air FG flow measurement
failed
!!! 110 Air supply low
!!! 255 Airway press. continuously
high
!!! 255 Airway pressure high
192
Cause
The sensor has not yet
warmed up.
The ambient air used for cali-
brating the sensor was
impure.
The cylinder is almost empty. Replace the cylinder. Use the
The cylinder is empty or
closed.
Cylinder pressure sensor is
not connected.
The measurement system for
the Air fresh-gas flow has
failed.
Central supply pressure and
cylinder pressure are low.
Airway pressure has been
continuously high.
The upper alarm limit for the
airway pressure has been
exceeded. The applied inspi-
ratory pressure is higher than
the set value.
Breathing hoses are blocked
or the tube is kinked.
Instructions for use Perseus A500 SW 2.0n
Remedy
Wait for the automatic calibra-
tion.
Position the device in an envi-
ronment with clean ambient
air.
Wait for the automatic calibra-
tion.
central supply.
Replace the cylinder. Use the
central supply.
Check if cylinder pressure
sensor is connected.
Use "ALARM RESET" to
acknowledge alarm.
Only use O as fresh gas.
2
Use the total flow tube to
check the fresh-gas flow.
Adjust the fresh-gas flow so
that it equals or exceeds the
minute volume.
Check central Air supply or
use cylinder.
Use "ALARM RESET" to
downgrade alarm priority.
Check ventilation settings.
Check breathing hoses,
breathing system, and anes-
thetic gas scavenging sys-
tem.
In Man/Spon mode, check the
APL valve setting.
Check lower alarm limit for
airway pressure.
Check patient condition.
Check ventilation settings.
Check alarm limit.
Check breathing circuit and
tube.