(2) Test the operation of the control module. Ensure you have 20cmH20
deflection when the red handle on the outflow valve is moved through its entire range.
Perform controlled IMV mode checks.
(a) Turn the rotary mode selector switch to CONTROLLED IMV.
(b) Turn the inspiratory relief pressure control to the fully clockwise
Turn the inspiratory time control to the fully clockwise position.
(d) Turn the expiratory time-limit control to the midpoint of travel.
(e) Observe the PAP gauge. Inspiration should last 1.5 to 2.5 seconds.
The PAP gauge should reach at least 60cmH20. Expiration should last 1 to 2 seconds.
The PAP gauge should fall to the level established by the red arm on the outflow valve.
(f) Turn the expiratory-flow gradient counterclockwise. Negative
pressure should be apparent in expiration. Disconnect the red expiratory-flow line from
the negative venturi. Verify expiratory flow is present only during expiration.
(g) Turn the inspiratory time limit counterclockwise to initiate the alarm.
After the alarm sounds, rotate the inspiratory time limit clockwise, and then push the
reset button to shut off the alarm.
g. Correct Minor Deficiencies After Reassembly. After thoroughly cleaning
and reassembling all components, carefully inspect all pressure lines. Replace any
which have been damaged during reassembly. After the Babybird has been
reassembled, it must be recalibrated. Refer to Lesson 2, paragraph 2-2.