Functional Tests Installation Guide
2 - 20 046-001141-00 A5/A3™ Service Manual
2.3 Functional Tests
Refer to Chapter 4.0 Calibration if any values are out of specification.
NOTE: The A5/A3 system must be powered on (AC power, not battery) and the 
Breathing System Warmer set to ON (version 2.01.00 and higher) at 
least an hour before performing the Ventilation Tests described in “VCV 
Adult Ventilation Mode Test” on page 2-45.
2.3.1 Breathing System Leak Test
NOTE: Always perform a leak test after servicing the anesthesia machine, 
replacing the components, or reconnecting the tubes.
2.3.1.1 Breathing System Leak Test in Mechanical Ventilation 
Mode
This test checks the pneumatic circuit for leaks in mechanical ventilation mode. Test items include the 
bellows, drive gas circuit, CO2 absorber canister, patient tubes, flow sensors, and flow sensor 
connectors.
To perform the breathing system leak test in mechanical ventilation mode:
1. You can access the automatic circuit leak test screen after the Power-On Self Test has passed. 
You can also open the Setup in Standby and select Test Leak/Compliance on the General menu 
to access the automatic circuit leak test screen.The automatic circuit leak test screen is shown 
below. Set up the machine as per the instructions on the screen. Then, select Continue to 
execute automatic circuit leak test. You can select Skip to access the Standby screen directly.
FIGURE 2-27 Automatic Circuit Leak and Compliance Test
The ongoing automatic circuit leak test is as shown below. You can select Cancel to cancel the 
ongoing leak test.