4 Preoperative Tests
1009-0307-000
4-9
•
Set the N
2
O flow control to the rates shown in the table. The O
2
flow
must be greater than the minimum limits.
7. Test the Link system with flow decreasing:
•
Set the N
2
O flow to 9.0 L/min.
•
Set the O
2
flow to 3 L/min or higher.
•
While reducing the O
2
flow, set the N
2
O flow to the rates shown in the
table. The O
2
flow must be greater than the minimum limits.
8. Adjust the flow of all gases through their full range and make sure that the
flowtube floats move smoothly.
9. Disconnect the O
2
pipeline supply or close the O
2
cylinder valve.
10. Make sure that:
•
The low O
2
supply alarm occurs.
•
N
2
O, and O
2
flows stop. The O
2
flow stops last.
•
Air flow continues.
•
Gas supply alarms occur on the ventilator if the ventilator uses O
2
as
the drive gas.
11. Turn all the flow controls fully clockwise (minimum flow).
12. Reconnect the O
2
pipeline supplies or open the O
2
cylinder valve.
13. Set the system switch to Standby.
Set the N
2
O flow
control to (L/min):
The O
2
flow must be
greater than (L/min):
0.8
0.2
2
0.5
4
1.0
10
2.5
Set the N
2
O flow to
(L/min):
The O
2
flow must be
greater than (L/min):
8.0
2.0
4.0
1.0
0.8
0.2
