Page 120 (Model J)
17.9 Reverse Jet Pressure Regulator Calibration
Note: The ventilator must be at working temperature with the metal
electronic unit top cover on before calibrating the reverse jet pressure
regulators, (machine must be on for at least half an hour).
a) Occlude ET manifold. Set up the ventilator to HFO Pure mode and set
the following parameters:
Set the Mean to 0 mbar
Set the Delta P to 20 mbar
HFO rate to 5Hz
b) Increase the Forward and Reverse HFO
Offsets to achieve the set pressures
(ignore transient overshoots).
c) Ensure the mean remains at zero.
Acceptable tolerance: + 1 mbar
d) Set the delta p to 150 and adjust the
reverse gain if necessary to achieve the
set pressure.
e) Ensure that the mean remains at zero.
Acceptable tolerance: + 5 mbar
f) Ensure a minimum delta P of 168 mbar can
be achieved
Acceptable tolerance: + 32 mbar
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