Heyer Pasithec - Monitoring with Oxygen

H E Y E R P a s i t h e c
48 / 106 HEYER Pasithec, Operator’s manual Rev. 0.2 Draft - 12/09
5.3.2 Monitoring with Oxygen
WARNING: The monitoring system cannot be replaced by a link system. A fresh supply
of gas that contains oxygen may not sufficiently increase the level of
oxygen in the breathing circuit.
If N
2
O exists, it will pass through the system during the test, which should
be securely collected and properly disposed of.
Patients may be injured by improper gas mixture. The link system should
not be used if a proper ratio of O
2
and N
2
O is not possible.
CAUTION: Before testing, perform test of the O
2
monitoring device according to step 8
in section 5.3.1.
Follow the steps to test the flow control:
1. Connect the pipeline gas supplies, or slowly open the cylinder valve.
2. Turn all flow control valves completely clockwise to the end.
3. Turn on the Pneumatic and Electronic Switch.
4. Do not use this system if the battery is not fully charged or other ventilator failure alarms occur.
5. While testing the flow control, be sure gas is not flowing through any flow tubes. Step 6 and step 7
are only applicable for the N
2
O system test.
WARNING: During Step 6 and Step 7, continue to use link systems.
Only adjust testing of control (N
2
O in step 6 and O
2
in step 7).
Adjust flow according to order (N
2
O first, O
2
second).
The oxygen sensor must be calibrated correctly.
6 To test the flow increase of the link system:
• Turn the N
2
O and O
2
flow control clockwise to the end.
• Turn the N
2
O flow control slowly counterclockwise.
• Check that the O
2
flow is increasing. The concentration of the oxygen tested must ≥ 25%
during the complete process.
7 To test the flow increase of the link system:
• Set the N
2
O flow to 9 L/min.
• Set the O
2
flow to 3 L/min or higher.
• Turn the O
2
flow control valve slowly clockwise.
• Check that the O
2
flow is being reduced. The FiO
2
tested must ≥ 25% during the complete
process.
8 Adjust the gases to full flow to ensure that the flowmeter floats moves smoothly.
9 Shut off the O
2
supply by closing the O
2
cylinder valve or by disconnecting the O
2
pipeline supply.
10 While testing, be sure:
• As pressure decreases, the oxygen-supply failure alarm sounds continuously.
• Disconnect the flow of nitrous oxide and oxygen to be sure that the oxygen flow will be the
last to stop.
• Air flow remains.
• If oxygen is the driving gas of the ventilator, the oxygen-supply failure alarm must sound
continuously.
11 Turn all flow control valves completely clockwise to the close.
12 Reconnect O
2
pipeline supplies or open the O
2
cylinder valve slowly.
13 Turn off the Pneumatic and Electronic Switch.