System Calibration Calibration
4 - 28 046-006272-00 A7™ Service Manual
[00 00 01 00] is
displayed.
Measurement range error occurs to the
internal flow sensor.
1. Check if the sampling line is
properly connected.
2. Diagnose by using the valve
diagnotic tools: keep the pneumatic
connection environment for
calibraiton. Access the valve
diagnostic tools. Occlude the
expiration valve with 4000DA. Open
the inspiration valve from small
values to bigger values. Observe the
measured value of the calibration
device under different valve
opening DA. If the inspiratory flow
sensor sampling AD corresponding
to the point of measured value of
calibration device close to (less than
45) 45 L/min is greater than 3900,
the measurement range of
ventilator flow sensor has an error. In
this case, replace the ventilator flow
sensor.
3. Replace the board.
[00 00 02 00] is
displayed.
The calibration data of the inspiratory
flow sensor is not unidirectional.
1. Check if the check valve is
properly connected.
2. Check if the sampling line is
properly connected.
3. Replace the inspiratory flow
sensor.
4. Replace the board.
[00 00 04 00] is
displayed.
The calibration data of the expiratory flow
sensor is not unidirectional.
1. Check if the check valve is
properly connected.
2. Check if the sampling line is
properly connected.
3. Replace the expiratory flow
sensor.
4. Replace the board.
[00 00 08 00] is
displayed.
The calibration data of the internal flow
sensor is not unidirectional.
1. Check if the sampling line is
properly connected.
2. Replace the internal flow sensor.
3. Replace the board.
[00 00 10 00] is
displayed.
Resolution error occurs to the inspiratory
flow sensor.
1. Check the sampling line and air-
tight connection.
2. Check the supply gas pressure.
3. Check the settings of the
calibration device.
4. See section 5.4 (pg. 5-71) "Sensors
and Valves Problems".
5. Replace the inspiratory flow
sensor.
6. Replace the board.
Failure description Possible cause Recommended action
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