Mindray WATO EX-55Pro, Service Manual

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4-24
NOTE
the test, you must select [
Continue
] to start the leak test again.
To do the breathing system leak test in mechanical ventilation mode:
To do the breathing system leak test in mechanical ventilation mode:
1. Make sure that the system is Standby. If not, press the key and select [
Ok
] from the
pop-up menu to enter Standby.
2. Set ACGO to patient circuit (if ACGO is configured).
3. Connect the Y piece on the breathing tube to the leak test plug to occlude the outlet of Y
piece.
4. Turn all flow controls to zero.
5. Make sure that the bag/vent switch is set to the position.
6. Push the O
2
flush button to fill the bellows, bellows rising to the top.
7. Select the [
Maintenance
] shortcut key and select [
System Leak&Compliance Test
] to
enter the manual leak test screen. Select [
Skip
] to enter the auto leak test screen. Select
[
Continue
] to start the breathing system leak test and compliance test in mechanical
ventilation mode. Typically, the test requires 3 to 5 minutes.
8. When the leak test is completed, the screen for auto leak&compliance test result is
switched to automatically, prompting the system leakage and system compliance test
result.
1) If the leakage is less than or equal to 200 ml/min, it indicates that the system has good
airtightness. The actual leakage is displayed in green.
2) If the leakage is between 200 and 1000 ml/min (including 1000 ml/min), it indicates
that the system has some leakage. The actual leakage is displayed in red.
3) If the leakage is greater than 1000 ml/min, it indicates that the system has significant
leakage. “>1000 ml/min” is displayed in red.
4) “Fail” is displayed directly when the leak test cannot be executed or the leakage is too
serious.
5) If the tube compliance is displayed in green numerics, it indicates that the tube
compliance measured value is within the reasonable range. If tube compliance
measurement is failed because the leakage exceeds 200 ml/min or due to other reason,
the failure message is displayed directly.
9. If the leak test is passed, it indicates that leakage of mechanical ventilation circuit is
within 0.2 L/min and the system has good airtightness. If the leak test is failed, it
indicates that the leakage of mechanical ventilation circuit exceeds 0.2 L/min and the
leak test screen prompts the user to do the following checking:
1) If the Y-shaped tube is sealed;
2) If the bellows rises to the top of the bellows housing;
3) If the O2 sensor is installed;
4) If the sampling port is occluded;
5) Select Retry to do the test again and select Override to enter Standby.
Check following the above steps. Select Retry to do the test again. If the leak test is still
failed, overhaul the machine.