Mindray A8 - Page 245

7-21
Message
Priority
Cause
Solution
(refer to 6.3.5).
6. If the calibration fails, replace the
sensor adapter board (refer to 11.1.16).
7. If the problem persists, replace the
monitoring and controlling assembly
(refer to 11.1.11).
Insp Valve Failure Med
1. An inspiratory valve
voltage error occurs.
2. An inspiratory valve
flow error occurs.
1. Restart the anesthesia machine.
2. If the power board has a voltage error
alarm, clear this alarm (refer to 7.3.3).
3. Select Setup > Service > Data
Monitors > Insp Valve to run an Insp
valve test. If the test fails, replace the
drive gas assembly (refer to 11.1.17).
4. If the test is passed, perform the flow
calibration (refer to6.3.1).
5. If the flow calibration fails, diagnose
the flow sensor by referring to 7.6.1.2. If
the sensor is not faulty, replace the drive
gas assembly (refer to 11.1.17).
6. If the inspiratory valve current is 0
after the inspiratory valve flow is set in
step 5, replace the monitoring and
controlling assembly (refer to 11.1.11).
PEEP Safety Valve
Failure
Med
1. A PEEP safety valve
voltage error occurs.
2. A PEEP safety valve
status detection error
occurs.
3. The PEEP safety
valve cannot be turned
on during the automatic
circuit leak test.
1. Restart the anesthesia machine.
2. If the power board has a voltage error
alarm, clear this alarm (refer to 7.3.3).
3. Select Setup > Service > Data
Monitors > PEEP Safety Valve to run a
PEEP safety valve test. If the test fails,
replace the drive gas assembly (refer to
11.1.17).
4. If the test is passed, restart the
machine.
Flow Sensor
Failure
Low
1. The ventilator flow
sensor is out of range.
2. The zero points of the
inspiratory and
expiratory flow sensors
on the patient side are
abnormal.
1. Zero the flowmeter (refer to 6.3.7).
2. Diagnose the flow sensor by referring
to 7.6.1.2.
3. If the measured value of the flow
sensor in step 2 is valid but the error is
large, perform the flow calibration (refer
to 6.3.1).
4. If the measured value of the flow
sensor in step 2 is invalid or calibration
fails, replace the sensor adapter board
(refer to 11.1.16).
5. If the problem persists, replace the
monitoring and controlling assembly
(refer to 11.1.11).
Check Flow
Sensors
High
1. Inspiratory reverse
flow is detected.
2. Expiratory reverse
flow is detected.
1. Check whether the check valve is
stuck, and re-install the circuit valve
cover (refer to 11.5.2).
2. Diagnose the flow sensor by referring
to 7.6.1.2.