Mindray A8 - Page 173

6-11
Failure
Description
Possible Cause Recommended Action
increase the current of the inspiratory valve
(Insp Valve Current
), and observe the
measured value of the calibration device under
each valve current. If the collected AD value
of the expiratory flow sensor at the time point
with the measured value of the calibration
device close to (smaller than) 180 L/min is
greater than 4050, the measurement range of
the expiratory flow sensor is abnormal.
Replace the expiratory flow sensor.
3. Replace the VCM.
Display 34
The drive gas pressure is
low.
1. Replace or connect a gas supply to keep the
gas supply pressure within 280–600 kPa (40
psi–87 psi).
2.
If the gas supply is normal, check the gas
supply pressure switch.
Display 39 T
he system fails to write
data into EEPROM.
1. Perform the calibration again.
2. Replace the VCM.
Display 3B The ACGO switch is in the
ON position.
1.
Check whether the ACGO switch is set to
OFF.
2.
Check the monitoring status of the ACGO
switch on the screen of the anesthesia
machine.