Functional Tests Periodic Maintenance
6 - 28 0070-10-0683 AS3000™ Service Manual
6.8.7.5 CMV Adult Ventilation Mode Test
1. Attach a breathing circuit and breathing bag.
NOTE: For testing purposes always use a reusable breathing
circuit.
2. Attach an adult test lung to the Y-fitting of the breathing circuit.
3. Attach a Vent Tester between the EXP port and the expiratory hose.
4. Set the O
2
flow to 2 L/min and set the N
2
O and AIR flow rates to minimum flow.
5. Set the ventilator controls to:
6. Select CMV again to begin ventilation.
7. Verify that the pressure waveform, Tidal Volume, Mean or Plateau Pressure, Resp. rate
and minute volume values appear on the screen.
8. Verify the Tidal Volume display is within 15% of the set value within approximately 1
minute from the start of ventilation.
9. Verify the Tidal Volume display is within 15% of the delivered volume measured with the
Vent Tester within approximately 1 minute from the start of ventilation.
10. Verify the measured O
2
concentration is at least 97% after 5 minutes.
11. Set the AIR flow to 3 L/min and set the N
2
O and O
2
flow rates to minimum flow.
12. Verify the measured O
2
concentration is 21% ±3% vol. % after 5 minutes.
VENTILATOR CONTROLS VENTILATOR SETTINGS
Patient Type Adult
Ventilation Mode CMV
Tidal Volume - V
T
600
Breath Rate - freq 8
I:E Ratio - I:E 1:2
Plateau - T
P
10
PEEP - PEEP Off
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