4-37
O2 supply pressure is insufficient
(lower than 200 kPa).
Change or connect the gas supply
and make sure that O2 supply
pressure is sufficient.
21% O2 calibration is not completed
before 100% O2 calibration.
Perform 21% O2 calibration
followed by 100% O2 calibration.
Calibration failure is
prompted about 3
minutes after
calibration is
started.
O2% count value is not within the
normal range (450 to 2700). Select the
[Maintenance] shortcut key →
[Factory Maintenance >>] →
[Diagnostic Test >>] → [Display A/D
Channels] → [Ventilator >>] to
access the [Display A/D Channels—
Ventilator] menu.
Replace the O2 sensor.
4.3.8 CO2 Calibration (factory)
4.3.8.1 Preparations
Prepare the following before doing the calibration:
Gas cylinder: one or more cylinders filled with 3% , 4%, 5%, 6% , or 7% CO
2
T-shape connector
Samping line
4.3.8.2 Calibration Procedures
NOTE
z During the calibration, selecting [Calibrate] again does not take effect or exit the
calibration menu. Other operations than menu options are disabled until the end of
calibration.
Calibrate as follows:
1. Make sure that the CO2 module is already warmed up.
2. Select the [Maintenance] shortcut key → [Factory Maintenance >>] → enter the
required password → [Module Cal. >>] → [Gas Module Cal. >>] → [CO2 Module
Cal.].
3. Check the airway and make sure that there are no occlusions or leaks.
Vent the sampling line to the air and check that the current rate is approximately
150 mL/min.If the deviation is great, it means that the airway is occluded. Check
the airway for occlusions.
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