Mindray A7 Service Manual

A7™ Service Manual 046-006272-00 3 - 23
Periodic Maintenance Functional Tests
3.8.5.3 Vaporizer Leak Test
1. Set the ventilation 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:
FIGURE 3-25 Vaporizer Leak Test Setup
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 200 mL/min.
6. Set the APL valve to 75 and verify that the pressure on the airway pressure gauge increases
above 30 cmH2O within 2 minutes.
7. Turn off the vaporizer. Set APL valve to SP.
8. Repeat Steps 4, 5, 6, and 7 for the other vaporizer.
NOTE: This test also tests the expiratory check valve.
3.8.5.4 Check Valve Test
1. Set the ventilation Auto/Manual ventilation switch to Manual.
2. Set the APL valve to 75.
3. Connect the breathing bag to the Inspiratory port.
4. Plug the bag arm.
5. Press the FLUSH button until the pressure on the airway pressure gauge reaches 35 cmH2O.
6. Set the APL valve to SP.
7. Verify that the pressure does not drop below 30 cmH2O after 10 seconds

Mindray A7 Specifications

General

Brand	Mindray
Model	A7
Category	Medical Equipment
Language	English