A7â„¢ Service Manual 046-006272-00 3 - 39
Periodic Maintenance Breathing System Checks
3.10.2.3 Check the Flow Accuracy of the EFCS
NOTE: Set the Gas Flow Analyzer Correction Mode to Standard settings (21 °C,
101.3 kPa).
1. Connect the O2, AIR and N2O line pressure hoses to the anesthesia system from the wall supply.
2. Connect a breathing hose from the ACGO port to the flow analyzer.
3. Connect a breathing hose from the flow analyzer output to the scavenger.
4. Attach a adapter to the flow analyzer to connect the sampling line from the AG module.
.
FIGURE 3-42
Calibration Device Fluke VT Plus
Setup the calibration device as described below:
a. Flow Settings: Press the Flow button on the front control panel of the calibration. You need
set Range to Low Flow (when Gas Type is N2O bal O2, you need set Range to High Flow).
b. Gas Settings: Press the Setup button, select Setting->ENTER->Gas Settings->MODIFY->Gas
Type->O2 or Air or N2O bal O2.
c. Correction mode: Press the Setup button, select Setting->ENTER->Correction Mode-
>MODIFY->Correction Mode->STPD21
Calibration Device (TSI Certifier 4070)
Setup the calibration device as described below:
a. Flow Setting: Press the to line select key until the top display reads LPM or SLPM. If the
display reads LPM, press the DISPLAY UNITS key until the top display reads SLPM.
5. Verify the machine is in EFCS mode.
6. Set the Flow Control mode to Direct Flow.
7. Touch the screen to start the manual ventilation mode and set the ACGO button to ON.
8. Set the balance gas to NONE.
9. Rotate the O2 flow control knob to set the O2 flow following the table below, then verify the
oxygen flow reading of the flow analyzer.
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