Vaporizer Tests Preoperative Tests
4 - 24 046-004667-00 A7™ Operating Instructions
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.
4.13.2 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.
4.13.3 Vaporizer Leak Test
1. Set the Auto/Manual ventilation switch to Manual.
2. Set the APL valve to the SP position.
3. Connect one end of the breathing circuit to the bag arm, one end to the inspiratory port and
the Y-piece to the test port:
4. Mount and lock the vaporizer onto the vaporizer mount. (Certain vaporizers need to be set
to at least 1% for correct testing. See the vaporizer manufacturer’s manual for details.)
5. Set the fresh gas flow to 0.2 L/min.
6. Set the APL valve to 75 and verify that the pressure on the airway pressure gauge increases
above 30 cmH
2
O within 2 minutes.
7. Turn off the vaporizer.
8. Repeat steps 4, 5, 6, and 7 for the other vaporizer.
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