3-8 BeneVision N17/BeneVision N15/BeneVision N12 Patient Monitor Service Manual
4. In the CO2 menu, select Zero.
5. After the zero calibration is finished successfully, connect the equipment as follows:
6. Open the relief valve, and adjust it until the flowmeter has a stable reading between
10 ml/min and 50 ml/min.
7. In the Calibrate CO2 menu, enter 6% (the CO
2
concentration) in the CO2 field. The measured CO
2
concentration is displayed.
8. After the measured CO
2
concentration becomes stable, select Calibrate CO2 to calibrate the CO
2
module.
9. Replace the cylinder to the steel gas cylinder with >40% O2 and balance gas N2(applicable to
sidestream CO2 module with O2 module equipped) and calibrate O2.
If the calibration is finished successfully, the message Calibration Completed! is displayed in the Calibrate
CO2 menu. If the calibration failed, the message Calibration Failed! is displayed. In this case, check
whether the operations are correct and perform another calibration. If the calibration fails several times,
return the module to Mindray for repair.
3.1.7 AG Tests
Leakage Test
1. Plug the AG module into the module rack.
2. Wait until the AG module warmup is finished and then completely block the gas inlet of the AG
module (you may use a pneumatic plug or your finger to manually occlude the port). An alarm
message AG Airway Occluded will appear on the screen.
3. Block the gas inlet for another 60 seconds. Select Main Menu → Maintenance → enter the
required password → Module → AG → Calibration. Check that the flow rate is less than 10
ml/min. If the alarm message continues, it indicates that the module does not leak.
If the alarm message disappears, or the flow rate is greater than or equal to 10 ml/min, it indicates that the
module leaks.
Monitor
T-shape connector
Tubing
Relief valve
Flowmeter
Gas cylinder
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