Mindray WATO EX-55, Service Manual

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5-49
（
5
）
Occlude the inspiratory&expiratory ports and bag arm port by using three
breathing tubes and one breathing tube Y piece as shown below.
（
6
）
Turn on the O2 flow regulator and adjust O2 flow to 0.2L/min,
（ 7 ） Push the O2 flush button to let the reading on the Paw pressure gauge rise to 3
kPa.
（
8
）
Stop O2 flushing. If the reading on the Paw pressure gauge falls under 3 kPa, this
test is failed.
（
9
）
If the reading on the Paw pressure gauge rises rapidly, to prevent defective APL
valve from damaging the Paw pressure gauge, note to turn off the O2 flow regulator
timely to prevent the overrange of the Paw pressure gauge (The test which involves
O2 flow regulator turned off due to this reason is considered to be passed).
3. Check the bellows housing and the bag position of the bag/mechanical ventilation
switch
Tools required:
„ Anesthesia machine calibration device (quantity: 1)
„
Circuit adapter test fixture (quantity: 1)
„ Injector (quantity: 1)
„
Φ
6 silicone tube (quantity: 2)
„ PU tube (6X300) (quantity: 1)
„ Y piece (quantity: 1)
Test procedures:
（ 1 ） Remove the folding bag.
（
2
）
Mount the bellows housing properly.
（ 3 ） Set the bag/mechanical ventilation switch to the bag position
（ 4 ） Remove the patient circuit.