Mindray WATO EX-55Pro, Service Manual

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7-10
7.3.2.2 Precautions
NOTE

Ensure that tubes do not leak when connected. That is, they have passed the
leakage test.

Do not move or press tubes during calibration.

When connecting calibration tubes, ensure that the gas flow direction is correct.
Normally, the gas flows from the inspiration connector of the breathing system, the
high-flow inlet of the anesthesia machine calibration device, the anesthesia machine
calibration device, the high-flow outlet of the anesthesia machine calibration
device, to the expiration connector of the breathing system.

Ensure that no sensor- or valve-related technical alarm is generated.

Ensure that the drive gas pressure is sufficient during calibration. Otherwise, the
calibration may fail.

You can use VT Plus or FPM for automatic calibration, or use a flow calibration
device that meets the accuracy requirement for manual calibration.

For calibration devices with high and low flow channels, flow channel switchover is
required during automatic or manual calibration.
7.3.2.3 Calibration Procedure
Perform the following steps to calibrate flow sensors.
1. Enter the standby mode.
2. Select
[
Main]
> [
Service]
> [
Calibration]
> [
Flow Sensors]
to enter the screen shown
below.