Functional Tests Installation Guide
2 - 30 046-006272-00 A7â„¢ Service Manual
2.3.3 Display Setup Check
Touch Continue to advance to the Standby screen display. For the A7, check that the screen displays
the main screen, check that all ventilation modes are there, as shown in the figure below.
FIGURE 2-43 Display Setup Check, A7
2.3.4 Calibrate the AG Module
Prepare the following before doing the external and Internal AG module calibration:
• Gas cylinder, with a certain standard gas or mixture gas. Gas concentration should meet the
following requirements: AA≥1.5%, CO2≥1.5%, N2O≥40%, O2≥40%, of which AA represents
an anesthetic agent. a/c≤0.01 (a is the gas absolute concentration accuracy; c is the gas
concentration).
• T-shape connector
• Tubing
Follow this procedure to perform a calibration:
The BFCS fails to retract
during automatic backup
flow control test.
The stepper motor of BFCS is faulty.
1. Re-start the machine.
2. Replace the parts of backup
flow control system.
The three-way valve is
faulty.
When the three-way valve is switched to
BFCS limb during BFCS automatic test, the
measured flow of total flow meter is less
than 0.2L/min.
1. Check if the gas supply
connection and supply gas
pressure are normal.
2. Replace the three-way valve.
Failure description Possible cause Recommended action
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