Mindray WATO EX-55, Руководство по обслуживанию

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4.3.10 O2 Module Calibration (factory)
4.3.10.1 Preparations
Calibrate the O2 module once a year or when the measured value has a great deviation.
Prepare the following before doing the calibration:
„ Gas cylinder: filled with a certain standard gas or mixed gas. O2 concentration should be
greater than 30%.
„ T-shape connector
„ Sampling line
„ Gas bag
4.3.10.2 Calibration Procedures
NOTE
z
Do not press the gas bag during the calibration.
z
Do not calibrate the O2 module when there are significant leaks in the airway.
z
Make sure that the gas bag is not empty during the calibration.
z
In case of calibration failure, select [Calibrate] again to do a calibration.
z
If the calibration still fails, replace the O2 module.
Calibrate as follows:
1. Make sure that the system is not Standby and the AG module is in [
Measure
] state.
2. Wait for the AG module to be fully warmed up.
3. Select the [
Maintenance
] shortcut key → [
Factory Maintenance >>
] → enter the
required password → [
Factory Cal. >>
] → [
Gas Module Cal. >>
] → [O2
Module
Cal.
].
4. Check the airway and make sure that there are no occlusions or leaks.
Vent the sampling line to the air and check whether the current rate and set rate are
approximately the same. If the deviation is great, it means that the airway is occluded.
Check the airway for occlusions.
Block the gas inlet of the sampling line. The current rate should drop rapidly and the
message of airway occlusion is prompted. Otherwise, it means that the airway leaks.
Check the airway for leakage.