Mindray A8 - Page 248

7-24
Message
Priority
Cause
Solution
11.1.11).
Pressure
Monitoring
Channel Failure
Med
1. The measured value
of the Paw sensor or
PEEP sensor is out of
range.
2. The zero point of the
Paw sensor or PEEP
sensor zero is abnormal.
1. Disconnect the gas supply, disconnect
the patient airway connection, and exit
the standby mode. Select Setup >
Service > Data Monitors > Zero Sensors,
and check whether the current zero
points of the PEEP sensor, Paw sensor,
and Pes sensor exceed the stored zero
points.
2. If the zero point error is large, perform
manual zeroing (refer to 6.3.7).
3. If manual zeroing fails, remove the
auxiliary output assembly (refer to
8.1.2), remove the VE box (refer to
8.29), and check whether the silicone
sampling line is folded, blocked, or
pressed.
4. If the problem persists, restart the
machine.
5. If the problem persists, replace the
sensor adapter board (refer to 11.1.16).
Disconnected? High
1. Check whether the
Y-piece is disconnected
during ventilation.
2. Check whether the
patient circuit is
damaged.
1. Reconnect the patient circuit.
2. Conduct a leak test. If no leakage is
detected, the problem is solved.
3. If the leak test fails, handle the leakage
problem by referring to 7.2.3 and 7.2.4.
Patient Circuit
Leak
Patient circuit leakage is
detected.
Handle the leakage problem by referring
to 7.2.3 and 7.2.4.
Calibrate Flow
Sensor and Insp
Valve
Low
No flow calibration table
is found on the VCM.
1. Perform the flow calibration again
(refer to 6.3.1).
2. If the problem persists after the
calibration, upgrade the software (refer
to Chapter 6).
3. If the problem persists, replace the
monitoring and controlling assembly
(refer to 11.1.11).
Calibrate Pressure
Sensor and PEEP
Valve
Low
No pressure calibration
table is found on the
VCM.
1. Perform the pressure calibration again
(refer to 6.3.5).
2. If the problem persists after the
calibration, upgrade the software (refer
to Chapter 6).
3. If the problem persists, replace the
monitoring and controlling assembly
(refer to 11.1.11).
3-way Valve
Failure
High
The zeroing 3-way valve
cannot be turned on or
off.
1. Perform zeroing again.
2. Open the auxiliary output assembly
(refer to 8.1.2), and check whether the
connection cable of the 3-way valve is
intact.
3. If the problem persists, replace the
3-way valve (refer to 11.1.16).