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5.4.3.3 Problems Related to Calibration Data of the Sensors
After confirming that both the zero points of the sensors and the sampling line connections
of the sensors are normal, you can detect if the calibration data of the sensors are accurate
by using the valves-test tool.
To diagnose the calibration data of the flow sensors:
With the gradual increase of actual flow, the measured value of the flow sensor
should also increase. Otherwise, the calibration data have errors. You need to
calibrate the flow sensor again.
Compared with the measured value of the standard flow measurement device
(anesthesia machine calibration device), the measured value of the flow sensor
should be accurate. Otherwise, the calibration data have great deviations. You
need to calibrate the flow sensor again.
For details, refer to
Check the Flow Sensor AccuracyCheck the Flow Sensor
Accuracy.
To diagnose the calibration data of the pressure sensors:
With the gradual increase of actual pressure, the measured value of the pressure
sensor should also increase. Otherwise, the calibration data have errors. You need
to calibrate the pressure sensor again.
Compared with the measured value of the standard pressure measurement device
(anesthesia machine calibration device), the measured value of the pressure
sensor should be accurate. Otherwise, the calibration data have great deviations.
You need to calibrate the pressure sensor again.
For details, refer to
4.2.6Check the Pressure Sensor Accuracy.
5.4.3.4 Problems Related to Opening State of the Inspiratory Valve
By using the valves-test tool, you can detect if the opening state of the inspiratory valve is
normal.
1. The methods for tube connections and settings of the anesthesia machine are same to
those of sampling line connections of the flow sensors. For details, refer to
5.4.3.2Problems Related to Sampling Line Connections of the Sensors.
2. In
the
[
Valves-Test Tool
] menu, gradually increase the D/A value of the inspiratory
valve. If the measured values of the ventilator flow sensor, inspiratory flow sensor,
and expiratory flow sensor change very little and low gas flow is felt at the connector
of water collection cup, it indicates that the inspiratory valve or the D/A on the
monitor board is faulty.
3. Normally, when the D/A value of the inspiratory valve is set to “2500”, the flow
measured by the standard flow measurement device can reach 90 L/min.
Summary of Contents for WATO EX-55
Page 1: ...WATO EX 55 65 Anesthesia Machine Service Manual ...
Page 2: ......
Page 4: ...II FOR YOUR NOTES ...
Page 6: ...IV FOR YOUR NOTES ...
Page 12: ...6 FOR YOUR NOTES ...
Page 58: ...3 22 FOR YOUR NOTES ...
Page 242: ...6 54 6 4 1 Electrical Connections Electrical Circuit Diagram ...
Page 260: ...6 72 FOR YOUR NOTES ...
Page 261: ...7 1 7 Parts 7 1 Main Unit 7 1 1 Main Unit 7 1 1 1 Exploded View ...
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Page 322: ...P N 0621 20 78654 1 1 ...