Mindray WATO EX-55, Service Manual

Page: 97 / 322

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4.3.9 AG Calibration (factory)
4.3.9.1 Preparations
Prepare the following before doing the calibration:
„ Gas cylinder: filled with a certain standard gas or mixed gas. Gas concentration should
meet the following requirements: AA>1.5%, CO
2
>1.5%, N
2
O>40%, O
2
>40%, of which
AA represents an anesthetic agent.
„ T-shape connector
„ Sampling line
„ Gas bag
4.3.9.2 Calibration Procedures
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 → [
Module Cal. >>
] → [
Gas Module Cal. >>
] → [
AG 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.
5. Connect the gas cylinder, gas bag and sampling line using a T-shape connector as shown
below.
AG module
Gas bag
Gas
cylinder
Pressure relief
valve
Sampling line