Mindray A9 Operating Instructions

Flow Sensor Calibration Maintenance
9 - 4 Operator’s Manual of Anesthesia System
9.3 Flow Sensor Calibration
WARNING: Do not calibrate the flow sensor when the system is connected to a
patient.
NOTE: During calibration, do not operate the pneumatic parts. Do not move or
press the breathing tubes.
NOTE: Calibrate the flow sensor after re-installing the cleaned or disinfected
flow sensor, after replacing with a new flow sensor, or when tidal
volume measurement is inaccurate.
The flow sensor must be calibrated whenever the flow volume is out of specification or after
changing the flow sensor.
To calibrate the flow sensor:
1. Ensure that the gas supply pressure is normal.
2. Turn off all fresh gas inputs.
3. Connect the Y piece on the breathing circuit to the leak test port to close the breathing system.
4. Remove the watertrap.
5. Ensure that the system is in Standby mode.
6. Select the icon, and open the [Setup] menu.
7. Select the [Calibrate] soft key.
8. Follow the on-screen prompts. Select the [Begin] key to calibrate the flow sensor. The
calibration may take several minutes. The system will display the results of the calibration status
after the process is completed.
9. Select to close the menu.
10. After the calibration is complete, install the watertrap.
NOTE: In case of repeated calibration failure, contact Mindray Technical
Support.
9.4 O
2
Sensor Calibration
WARNING: Do not perform the calibration when the system is connected to a
patient.
WARNING: To calibrate an O
2
sensor, the ambient pressure must be identical with
the ambient pressure for O
2
transport monitoring of the breathing
system. Otherwise, the monitoring may exceed the specified range.
WARNING: Prior to the O
2
sensor calibration, remove the O
2
sensor. Make sure
there is no water on the O
2
sensor or where it is installed before
installing the O
2
sensor.
WARNING: No O
2
calibration is required if O
2
sensor is not equipped or not used.
WARNING: Observe related biohazard regulations during disposal of discarded O
2
sensors. Do not burn O
2
sensors.
9.4.1 21% Oxygen Calibration
It is required to check the 21% O
2
calibration once around every 72 hours to keep O
2
sensor accuracy
for the anesthesia system not connected to the air supply.

Mindray A9 Specifications

General

Brand	Mindray
Model	A9
Category	Medical Equipment
Language	English