A7™ Service Manual 046-006272-00 2 - 39
Installation Guide Breathing System Checks
2.5.2.2 EFCS Test
1. Connect the O2, AIR and N2O line pressure hoses to the anesthesia system from the wall supply.
2. Connect a breathing hose from the ACGO port to the flow analyzer.
3. Connect a breathing hose from the flow analyzer output to the scavenger.
4. Attach a adapter to the flow analyzer to connect the sampling line from the AG module
FIGURE 2-48
5. Verify the machine is in EFCS mode.
6. Set the Flow Control mode to Direct Flow.
7. Touch the screen to start the manual ventilation mode and set the ACGO button to ON.
8. Set the balance gas to NONE.
9. Rotate the O2 flow control knob to ensure a continuous flow increase throughout its full range.
Set the O2 flow to 5 L/min.
10. Verify the that the O2 concentrations reads at least 97% and the N2O concentration reads 0%
after 1 minute.
11. Set the balance gas to AIR, and set the O2 flow to 0L/min.
12. Rotate the balance / AIR flow control knob to ensure a continuous flow increase throughout its
full range.
13. Set the AIR flow to 5 L/min.
14. Verify the that the O2 concentrations reads between 19% and 23% and the N2O concentration
reads 0% after 1 minute.
15. Set the balance gas to N2O.
16. Set the O2 flow to 5 L/min and rotate the N2O flow control knob to ensure a continuous flow
increase throughout its full range (N2O flow range: from 0 to 12 L/min).
17. Set the O2 flow to 5 L/min and the N2O flow to 5 L/min.
18. Verify the that the O2 and N2O concentrations reads between 47% and 53% after 1 minute.
19. Set the system to the STANDBY mode by pressing the End Case button.
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