A7â„¢ Service Manual 046-006272-00 3 - 41
Periodic Maintenance Performance Verification
• AIR Supply Failure appears on the screen.
• An alarm tone sounds.
16. Reconnect all line pressure hoses.
3.11 Performance Verification
NOTE: Set the Gas Flow Analyzer Correction Mode to ambient temperature
and pressure.
3.11.1 Manual Mode Ventilation Test
1. Power ON the anesthesia system.
2. Attach a breathing circuit and test lung to the Y-fitting of the breathing circuit.
NOTE: For testing purposes always use a reusable breathing circuit and make
sure the machine is under EFCS.
3. Perform the start up tests per the on-screen instructions. Ensure successful completion.
4. Set the mechanical Auto/Manual switch to MANUAL. Press the screen for the screen to change
to manual Mode.
5. Set the APL Valve to approximately 25 cmH2O. Push the O2 Flush button to fill the breathing
bag.
6. Set the AIR flow to 1 L/min using the flow control valve. This will change the screen to manual
Mode
7. Squeeze the breathing bag once every 3 seconds.
8. Verify the inflation and deflation of the test lung.
9. Verify that an airway pressure waveform and all numeric values appear on screen during bag
compressions.
10. Stop squeezing the breathing bag and set the APL Valve to the open position (SP).
3.11.2 APNEA Alarm Test
1. While in the Manual Ventilation Mode, stop ventilating the test lung and set the APL valve to SP.
2. Verify that the following APNEA alarm signals activate at approximately 30 seconds from the last
bag compression.
• APNEA appears on the screen.
• An alarm tone sounds.
3.11.3 Alarm Silence Test
1. While the APNEA alarm is sounding, press the Silence soft key.
2. Verify the audio portion of the alarm stops and resumes after 2 minutes.
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