Datex-Ohmeda Aespire 7900, User'S Reference Manual

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Aespire 7900
4-10
O
2
Flush Failure Low The pressure switch that
detects flush flow has seen a
very long flush (≥30
seconds). This alarm occurs if you hold
down the Flush button for more
than 30 seconds. If the alarm occurs
when flush is not in
use, contact a qualified
service representative.
O
2
Sensor out of
circuit
Low Ventilator malfunction. Ventilate manually. Contact a qualified
service representative.
On Battery - Power
OK? Medium
(low after
acknowledged) The mains supply is not
connected or has failed and
the system is using battery
power. Ventilate manually to save
power. At full charge, the battery
permits approx. 30 minutes of
mechanical ventilation. Make sure power is
connected and circuit
breakers are closed.
Patient Circuit Leak? Medium Exhaled volume <50% of
inspired volume for at least
30 seconds (mechanical
ventilation). Check breathing circuit and flow
sensor connections. - - -
Paw < -10 cmH
2
O High Subatmospheric pressure
(<-10 cmH
2
O).
Check patient condition,
spontaneous activity? Increase
fresh gas flow. Look for high flow
through gas scavenging. Calibrate the flow
sensors.
b
With active
scavenging, check the
negative relief valve on
the receiver.
PEEP Not Achieved Low Pmin does not reach within
±
2 cmH
2
O of PEEP by the
end of mechanical
expiration for 6 consecutive
breaths.
Check tubing connections. Rate
and/or I:E ratio may prevent
ventilator from reaching desired
PEEP level. - - -
Positive SIB Vref Out-
of- Range Minimum
shutdown (High) Ventilator malfunction. Ventilate manually. Monitoring is
not reliable. Contact a qualified
service representative.
Pres Mode Not Avail Medium
(Pressure,
PSVPro and SIMV
modes)
Low (Volume
mode)
Manifold pressure not
tracking airway pressure, or
manifold pressure
≤ -15 cmH
2
O.
Pressure control mode and PEEP
are not available. Switch to
Volume mode or ventilate
manually.
Check patient for spontaneous
breathing.
Check ventilator settings.
Contact a qualified
service representative.
Pres/Vol Mon
Inactive Medium Outlet selection switch is set
to auxiliary gas outlet. Connect the patient circuit to the
auxiliary gas outlet or set the
switch to the circle breathing
system. - - -
Message Priority Cause Action/Concerns Repair