CareFusion LTV 1200 Service Manual page 55

3) Remove a Luer fitting from the calibration syringe assembly. Connect the tube from the
syringe to the high pressure port of the valve differential transducer (the port nearest the
analog board). Use the pinch clamp on the unused line from the calibration syringe
assembly to hold the pressure steady. Increase to and maintain the pressure at
15.0 ± 0.2 cmH O.
2
Observe the numbers displayed in the Tidal Volume setting window. When the
displayed value is stable, press Select.
Record the number that was displayed when you pressed Select on the Calibration
Worksheet.
C
VD 0
4) Disconnect the tube from the syringe to the high pressure port of the valve differential
transducer and observe the numbers displayed in the Tidal Volume setting window.
When the displayed value is stable, press Select.
Record the number that was displayed when you pressed Select on the Calibration
Worksheet.
PPP is displayed if the calibration was successful.
5) Reconnect the flexible tubes from the solenoid manifold and the flow valve to the valve
differential transducer.
The orange tube from the bottom of the flow valve should be reconnected to the port
farthest from the analog board (low pressure), and the clear flexible tube from port #1
on the solenoid manifold should be reconnected to the port nearest the analog board
(high pressure).
If CAL FAIL appears at any time, press Select to exit the calibration. When VALVE DIFF is
displayed, press Select and perform the calibration again.
Page 6-16
H O is displayed.
M 2
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LTV 1200, 1150, and 1100 Ventilator Service Manual p/n 18603-001, Rev. J