Vaporizer Tests Preoperative Tests
4 - 22 046-003777-00 A5/A3™ Operating Instructions
4.12 Vaporizer Tests
WARNING: During the vaporizer tests, the anesthetic agent exits from the fresh gas
outlet. Use a safe and approved procedure to remove and collect the
agent.
WARNING: To prevent damage, turn the flow controls fully clockwise (flow OFF)
before using the system.
Before the test, ensure that the vaporizers are correctly installed. For details about vaporizer
installation, see ‘‘Install the Vaporizer’’ on page 2-5.
4.12.1 Vaporizer Back Pressure Test
1. Connect the O
2
pipeline supply or open the O
2
cylinder valve.
2. Set the O
2
flow to 6 L/min.
3. Ensure that the O
2
flow stays constant.
4. Adjust the vaporizer concentration from 0 to 1%. Ensure that the O
2
flow must not decrease
more than 1 L/min through the full range. Otherwise, install a different vaporizer and repeat
this step. If the problem persists, the malfunction is in the anesthesia system. Do not use this
system.
5. Test each vaporizer as per the steps above.
NOTE: Do not perform this test on the vaporizer when the concentration
control is between “OFF” and the first graduation above “0” (zero) as
the amount of anesthetic drug outputted is very small within this
range.
4.12.2 Manual Leak Test
1. Set the Auto/Manual ventilation switch to Manual.
2. Connect a breathing circuit to the inspiratory and expiratory ports. Connect a ventilation
bag to the bag arm.
3. Set APL Valve to 75 cmH
2
O.
4. Close the breathing system at the patient connection by connecting the Y-piece on the
breathing circuit to the leak test port.
5. Inflate the ventilation bag with O
2
flush to 40 cmH
2
O.
6. Verify that circuit holds pressure for greater than 10 seconds.
7. Set the APL valve to SP.
4.12.3 Vaporizer Leak Test
1. Set the Auto/Manual ventilation switch to Manual.
2. Set the APL valve to the SP position.
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