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Detailed Repair Procedures
6. The gain factor is an offset, so for example, if the measured value is
495ml and the ventilator Vte display (red box in above screen) is showing
560ml, the default gain factor of 286.00 for Vte on the vent screen should
be adjusted up to bring the measured value of 560ml down to 495ml.
When a change is made to the gain factor, it will not take effect on the
screen until the ventilator is cycled from VENT mode to BAG mode and
then back to VENT mode. Adjustments should be made until the value in
the red box aligns with the measured value +/- 5ml. The same procedure
is to be used for Vti.
7. When all adjustments are complete, power down the unit to save the
changes and exit the calibration screen.
Test Procedure
1. Run the ventilator using the settings noted in Step 4 of the previous
section. Ensure that the displayed and measured values are accurate with
one another and both are 500 ml +/- 50 ml.
2. Set the tidal volume to 250 ml and ensure both readings are
250 ml +/-25 ml.
3. Set the tidal volume to 750 ml and ensure both readings are
750 ml +/-75 ml.
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