Dräger Perseus A500 Instructions For Use Manual page 169

Alarm Alarm
priority
! 100 CO sensor accuracy low
2
!! 135 Cooling fan failure
!! 140 CPAP changed to "Off"
!! 150 Emergency air inlet acti-
vated
!! 135 etCO high
2
!! 135 etCO low
2
!! 100 Exp. press. sensor failure
! 100 Expiratory flow sensor
expired
! 190 Expiratory flow sensor not
calibrated
Instructions for use Perseus A500 SW 1.1n
Cause
Accuracy of the CO sensor
2
cannot currently be guaran-
teed.
An internal fan for evacuating
gases is faulty.
The set CPAP pressure could
not be achieved due to leak-
age. The system has
changed the CPAP setting to
"Off".
Negative pressure in the
breathing system due to
insufficient fresh gas in the
breathing bag. The system
utilizes ambient air to ensure
ventilation.
etCO has exceeded the
2
upper alarm limit.
etCO is below the lower
2
alarm limit.
Sensor calibration failed.
Accessory has been used too
long.
The sensor is not calibrated.
The breathing system has
been replaced or discon-
nected since last calibration.
Failure of the flow sensor.
Troubleshooting
Remedy
If the problem persists for
more than 10 minutes, call
DrägerService.
To prevent potential damage,
switch off system at your ear-
liest convenience. Increased
risk of fire.
Call DrägerService.
Check the breathing circuit for
tight connections and leak-
ages.
Increase fresh-gas flow.
Reapply the CPAP setting.
Use "ALARM RESET" to
acknowledge alarm.
Refill breathing bag (e.g., with
"O +" or "Add. O ").
2 2
Increase fresh-gas flow.
Check the breathing circuit for
tight connections and leak-
ages.
Check ventilation.
Check ventilation.
Ensure that a suitable substi-
tute monitoring is available.
Perform the system test.
Replace the accessory if nec-
essary.
Use "ALARM RESET" to
acknowledge alarm.
Perform the breathing sys-
tem test.
Replace the flow sensor and
perform the breathing system
test.
169