12-4
12.3 Pressure and Flow Zeroing
Zero pressure and flow when the monitored pressure or flow value has a great deviation.
Zeroing can be performed in both Standby status and ventilation mode.
Follow these steps to zero pressure and flow:
1. Press the [Setup] key. Select [Calibrate] and select [Zero]. Select [Start] to which
pressure and flow zeroing correspond on the right side to start Paw and flow zeroing.
The [Sensor Zeroing] prompt message is displayed.
2. After a successful zeroing, the screen shows [Sensor Zeroing Completed!]. Otherwise,
the message indicating zeroing failure is displayed. In this case, you need to do the
zeroing again.
12.4 Flow Calibration
NOTE
Do not perform calibration while the unit is connected to a patient.
Do not perform flow calibration when low-pressure oxygen source is used.
During calibration, do not operate the pneumatic parts. Especially, do not move or
press the patient tubing.
Ensure that the system is in Standby status. If not, push the [Standby] key to enter
standby screen.
It is recommended not to connect the humidifier to the ventilator before the
calibration.
Calibrate the flow sensor when the measured value has a great deviation from the setting, or
when the flow sensor is replaced.
Follow these steps to calibrate flow:
1. Ensure high-pressure oxygen source is connected.
2. Connect the patient tubing and insert the Y piece into the leak test plug to close the
breathing circuit.
3. Press the [Setup] key. Select [Calibrate] and select [Flow Calibration]. Select [Start]
on the right side to start Flow Calibration. The [Calibrating] prompt message is
displayed.
4. During the calibration, if you select [Stop], the ongoing calibration will stop and the
message [Calibration Stopped! Calibration is unfinished.] is displayed.
5. After a successful calibration, the screen shows [Calibration Completed!]. Otherwise,
the message indicating calibration failure is displayed. In this case, you need to do the
calibration again.
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