Datex-Ohmeda Aestiva 7900 SmartVent, Техническое справочное руководство

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5 Troubleshooting
5-16 05/04 1006-0453-000
Low Paw high
(5) In-range Paw data
available Peak airway pressure <
|P
min
| + 4 for 20
consecutive seconds.
P
min
is the baseline
pressure during a
breath.
Check the breathing circuit for leaks.
Check flow sensors hoses for leaks.
Perform flow sensor calibration.
Check SIB to CPU cabling.
Replace the SIB board.
Replace the CPU board.
Alarm condition becomes false or transition from
mechanical ventilation on to off.
Low V
E
high
(5) In-range flow data
available and alarm
limit not = off V
E
< low limit Check ventilator settings and volume output.
Check the breathing circuit.
Perform flow sensor calibration.
Replace the flow sensors.
Check SIB to CPU cabling.
Replace the SIB board.
Replace the CPU board.
Alarm condition becomes false or volume alarms
state transition to standby (or off).
Low V
TE
medium In-range flow data
available and alarm
limit not = off V
TE
< low limit Check ventilator settings and volume output.
Check the breathing circuit and flow sensor
connections.
Perform flow sensor calibration.
Replace the flow sensors.
Check SIB to CPU cabling.
Replace the SIB board.
Replace the CPU board.
Alarm condition becomes false or volume alarms
state transition to standby (or off).
Manifold
Pressure
Sensor
Failure Minimum
Monitoring
(8) (9)
Cal failure at bootup or
DPL switch engaged and
P
manifold
< 80
cm H
2
O
Check the breathing circuit.
Perform flow sensor calibration. If calibration
fails, replace the SIB.
Check DPL switch for proper operation using
the service mode Test press. limit switch
check. If DPL switch test fails, replace the SIB.
High
Pressure
Limit
Reached Minimum
Monitoring
(8) (9)
DPL engaged and Paw <
90
cm H
2
O
and
Pmanifold < 80
cm H
2
O
Check the breathing circuit.
Perform flow sensor calibration. If calibration
fails, replace the SIB.
Check the DPL switch for proper operation
using the service mode Test press. limit switch
check. If DPL switch test fails, replace the SIB.
Memory
(EEPROM)
Fail User Alarm The system cannot
access some stored
values. Default settings are
used. Ventilation is still
possible but service is
necessary. Replace the CPU board.
Memory
(flash)
Failure
(7) Minimum
Shutdown
(6)
CRC failure Replace the CPU board.
Message Alarm type/
Priority Enabling Criteria Alarm Condition Service Repair
Removal Criteria