A7™ Operating Instructions 046-004667-00 4 - 27
Preoperative Tests Alarm Tests
4.15 Alarm Tests
Test alarms by creating an alarm condition on the A7 and verifying the corresponding alarm
indicators are present on the monitor.
4.15.1 Prepare for Alarm Tests
1. Connect a test lung or manual bag to the Y-piece of the breathing circuit.
2. Set the Auto/Manual switch to Auto.
3. Set the system switch to the ON position.
4. Set the system to the Standby mode.
5. Set the Patient Size to Adult.
6. Set the ventilator controls as follows:
• Ventilation mode: select VCV
• Vt: 500 ml
• Rate: 12 bpm
• I:E: 1:2
•Tpause: 10%
•PEEP: OFF
• Plimit: 30 cmH
2
O
7. Set the Auto/Manual switch to Manual.
8. Set the O
2
flow to 0.5 to 1 L/min.
9. Set the Auto/Manual switch to Auto.
10. Push the O
2
flush button to expand the bellows to the top of the bellow enclosure.
11. Ensure that:
• The main screen displays the correctly set data. The measured values should be within the
tolerances specified in the specifications (see TABLE 9-31, “Control and Monitoring
Accuracy,” on page 9-19).
• The bellows inflates and deflates normally during mechanical ventilation.
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