Inspiratory Flow Valve Cal - GE Datex-Ohmeda Aisys Carestation Reference Manual

Aisys

5.4.3 Inspiratory Flow Valve Cal

A
B
A
Troubleshooting
5-14
Calibration setup
Leave the Drive Port (A) and the Manifold Port (B) on the interface valve
plugged.
Calibration procedure:
1. On the Calibration menu, select Insp Flow Valve.
2. Push the ComWheel to enable the Stage 1 calibration.
3. When Stage 1 is completed, remove the plug from the Manifold port and
insert the calibrated orifice (C)
4. Push the ComWheel to enable the Stage 2 calibration.
(May take two minutes before you see any effects of the test on the screen.)
5. When Stage 2 is completed, select Previous Menu.
C
Stage 1 Calibration Failures
The Calibration will fail if the:
• Flow valve DAC counts are ≥ 1000 counts while finding points 2 through 6.
• Previously found DAC value is ≥ to the current DAC value while finding points
2 through 6.
• Previously recorded flow for a previous DAC is > the previous flow for a
previous DAC.
• Points 2, 3, and 4 have the same value stored for flow (this would cause a
divide by zero when extrapolating).
Possible causes for calibration failure:
• Check Altitude and Drive Gas selection
• Leaks around the test plugs
• Leaks in Vent Engine Interface Manifold – Inspect for leaks
• Insp Flow Valve not closing completely (leaky) – Replace Insp Flow Valve
• Drive gas regulator not adjusted / stable – Check regulator calibration
• Insp Flow Valve not linear – Replace Insp Flow Valve
C
Calibrated Flow Orifice
1504-3016-000
04/08 M1046983