Mindray WATO EX-55, Service Manual

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6. Vent the sampling line to a certain standard gas opening the cylinder pressure relief
valve.
7. In the [
AG Module Cal.
] menu, the measured gas concentration and flow are displayed.
If the difference between the measured gas concentration and the actual one is very
small, a calibration is not needed.
If the difference is great, you should perform a calibration.
8. Enter the vented gas concentrations.
9. Select [
Calibrate
] to start a calibration.
10. After a successful calibration, the screen shows [
Calibration Completed!
]. Otherwise,
the message [
Calibration Failure! Please try again.
] is displayed. In this case, you
need to do the calibration again
.
NOTE
z
If the calibration fails, you can select [Defaults] to restore the factory default
calibration values. If the deviation is great, select [Calibrate] again to do a
calibration.
z
If the calibration still fails, replace the AG module.
4.3.9.3 Commonly-encountered Problems and Recommended Actions
Failure description Possible cause Recommended action
Calibration menu is
inaccessible. The AG module is not fully warmed up
or not in measure mode. Wait for the AG module to be
fully warmed up and then access
the calibration menu.
Calibration is not
completed. 1. The module is damaged.
2. The difference between the set AG
calibration concentration and the
selected standard AG concentration is
too great. 1. Return the module to factory
for repair.
2. The difference between the
standard gas concentration and
the set calibration concentration
can not exceed 25% of the
standard gas concentration.