Dräger Perseus A500 Instructions For Use Manual page 198

Troubleshooting
Priority Alarm
!! 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
!!! 200 External fresh-gas outlet
failure?
!! 50 Filling level of vaporizer low The filling level of the active
! 100 Filling level of vaporizer low The filling level of an inactive
198
Cause
There was not enough gas to
ventilate the patient. To main-
tain a minimum ventilation,
the device has started to use
ambient air.
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.
Failure when switching to
external fresh-gas outlet.
Failure when switching from
external fresh-gas outlet to
another ventilation mode.
vaporizer is low.
vaporizer is low.
Instructions for use Perseus A500 SW 2.0n
Remedy
Refill the breathing bag, e.g.,
with O flush.
2
Increase fresh-gas flow.
Check the breathing circuit for
tight connections and leak-
ages.
Use correct breathing bag.
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 leakage test.
Replace the flow sensor. Per-
form the leakage test.
Use "O +" button to deter-
2
mine flow direction of fresh
gas: -If internal breathing sys-
tem or breathing bag fill,
external fresh-gas outlet is
not available. -If gas flows out
of the external fresh-gas out-
let, external fresh-gas outlet
can be used. Internal breath-
ing system can only be used
when the breathing bag is not
connected (ventilation with
ambient air only).
Check fresh-gas settings.
Call DrägerService.
Check filling level. Refill if
necessary.
Use "ALARM RESET" to
downgrade alarm priority.
Check filling level. Refill if
necessary.