Mindray A8 - Page 250

7-26
Message
Priority
Cause
Solution
the preceding step, replace the
monitoring and controlling assembly
(refer to 11.1.11). If the problem persists,
replace the vaporizer base valve
assembly (refer to 11.1.12).
Auto/Manual
Switch Failure
High
The auto/manual switch
malfunctions.
Handle the problem as the switchover
failure by referring to 7.4.2 after the
auto/manual switch is used.
Vaporizer Lock
Device Failure
High
The status of the drive
gas pilot valve of the
vaporizer is inconsistent
with that of the actual
position switch.
1. Ensure that the O2 supply is sufficient.
2. Reinstall the electronic vaporizer.
3. If the problem persists, remove the
electronic vaporizer. Select Setup >
Service > Data Monitors > Flow Test.
On the Diagnostics screen, set the
pneumatic locking valves of vaporizer 1
and vaporizer 2 to On. Check whether
the pneumatic lock on the guide rail of
the electronic vaporizer pops up.
4. If the pneumatic lock cannot pop up,
disassemble the drive pipe of the lock,
and perform step 3 to check whether any
drive gas ejects.
5. If drive gas ejects in step 4, replace the
pneumatic lock assembly (refer to
11.4.1).
6. If no drive gas ejects in step 4, replace
the vaporizer base valve assembly (refer
to 11.1.12). If the problem persists,
replace the monitoring and controlling
assembly (refer to 11.1.11).
O2 Supply Failure,
AA Vaporizer
Stopped
High
O2 supply pressure is
low, resulting in
malfunction of the
vaporizer.
Handle the problem in the same way that
the "O2 Supply Failure" alarm is
handled.
Esophageal
Pressure Sensor
Failure
Med
The esophageal pressure
sensor cannot be
detected during use.
1. Check whether the auxiliary pressure
accessory is properly installed and
connected.
2. Disassemble the auxiliary output
assembly (refer to 8.1.2), and check
whether the silicone tube of the auxiliary
pressure sensor is folded, pressed, or
falls off. (The auxiliary pressure sensor
is the first sensor on the left of the sensor
adapter board.)
3. If the connection of the sampling line
is OK, replace the sensor adapter board
(refer to 11.1.16).
Calibrate
Esophageal
Pressure Sensor
Low
No esophageal pressure
calibration table is found
on the VCM of a
machine configured with
esophageal pressure.
1. Perform the pressure calibration again
(refer to 6.3.5).
2. If the problem persists after the
calibration, replace the monitoring and
controlling assembly (refer to 11.1.11).