Operator’s Manual of Anesthesia System 5 - 11
Preoperative Tests Flow Control System Test
5. Adjust the Air flow. Make sure that the displayed reading of electronic flowmeter is consistent
with the setting.
6. Set [Balance Gas] to [N
2
O].
7. Adjust the N
2
O flow gradually. Make sure that the O
2
flow increases with the increase of N
2
O
flow and that the O
2
and N
2
O flows are in the proportion of 1 to 3.
8. Set both O
2
flow and N
2
O flow to 5 L/min.
9. Turn off the O
2
pipeline supply.
10. Push the [O
2
Flush] button to release the pressure inside the system.
11. Make sure that the technical alarm of [O
2
Supply Failure] appears, and the N
2
O flow is zero.
12. Make sure that a N
2
O flow value is read and finally stabilized at 5 L/min after the O
2
pipeline
supply is turned on.
13. Open the BFCS cover, start the BFCS and make sure that a prompt message of [BFCS in Use]
appears.
14. Make a visual check to ensure that the total flowmeter shows a basal flow of approximately 1 L/min.
15. Adjust the Air needle valve. Increase Air flow gradually and make sure that the total flow can rise
to more than 10 L/min. Close the Air needle valve.
16. Adjust the O
2
needle valve to increase the O
2
flow gradually and make sure that the total flow
can rise to more than 10 L/min. Adjust the flow to 10 L/min.
17. Close the O
2
needle valve.
18. Rotate the O
2
needle valve for half a circle.
19. Close the BFCS cover, and the Main Screen will prompt a menu to confirm disabling the flow
control system. Select [Ye s ] and ensure that the [Manual valves must be closed!] prompt
message appears.
20. Close the O
2
needle valve and close the BFCS cover again. The Main Screen prompts a menu to
confirm disabling the flow control system. Select [Ye s], and the prompt message disappears.
21. Open the BFCS cover and turn the Air needle valve for half a circle.
22. Close the BFCS cover, the system automatically opens the BFCS cover and the Main Screen will
prompt a menu to confirm disabling the flow control system. Select [Ye s ] and ensure that the
[Manual valves must be closed!] prompt message appears.
23. Close the air needle valve and close the BFCS cover again. The Main Screen prompts a menu to
confirm disabling the flow control system. Select [Ye s], and the prompt message disappears.
NOTE: In the event that the BFCS needle valve fails to be closed when you have
closed the BFCS cover, the system will prompt [Manual valves must be
closed!] if you proceed with other operations. In this case, check if all
the needle valves are fully closed.
NOTE: When checking the readings on the total flowmeter, keep your visual
angle at the same level of the float. The reading of the scale may vary
when viewed at a different angle.
24. Disconnect the pipelined gas supply or close the cylinder valve.
25. Set the System switch to the OFF position.
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