5-58
The displayed TVe and TVi are
not the same.
Enter factory maintenance and switch on
TVi review. Observe the value of TVi. In
the valves test tool, compare the
measurement error made by three sensors
and judge whether to perform calibration as
per 4.3.2Flow Calibration (factory).
In the above table, possible causes marked “*” are related to inaccurate measured values by
flow sensors. Do the following to detect if tidal volume inaccuracy results from “*” marked
causes.
1. Turn off the flow regulators.
2. Make sure that the patient is disconnected from the system and that the
bag/mechanical ventilation switch is set to the mechanical ventilation position.
3. Remove the folding bag and install the bellows housing properly.
4. Remove the water collection cup.
5. Connect the inspiration and expiration connectors by using a breathing tube, as shown
below.
6. Turn on gas supplies and enter Standby.
7. Select [Maintenance] → [Factory Maintenance] → [Diagnostic Test >>] →
[Valves-Test Tool >>] to set the A/D value of the PEEP valve to make PEEP exceed
40cmH2O. Set PEEP safety valve to ON, as shown below.
The water collection cup is
alread
removed.
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