Mindray WATO EX-55Pro, Service Manual

Page: 267 / 474

8-13
Message
Alarm
Priority
Cause Solution
5. When necessary, replace the expiratory
valve assembly.
6. When necessary, replace the power board.
Safety Valve
Failure
Medium
PEEP safety valve
voltage error
1. Test the voltage at the corresponding testing
point.
2. Check the installation of and connection
between the power cable and expiratory valve
assembly.
3. When necessary, replace the VCM board.
4. When necessary, replace the expiratory
valve assembly.
5. When necessary, replace the power board.
Flow Sensor
Failure
Low
1. The inspiratory flow
is out of range.
2. The expiratory flow
is out of range.
3. The internal flow
sensor is not
connected.
1. Check whether the zero point of the flow
sensor is within the valid range.
2. Check whether the monitored value of the
flow sensor is within the valid range.
3. Replace the flow sensor and perform
calibration.
4. Check the cable connection of the internal
flow sensor. Reconnect the cable. When
necessary, replace the flow sensor.
5. Replace the VCM board and perform
calibration.
Check Flow
Sensors
High
1. Inspiratory reverse
flow
2. Expiratory reverse
flow
1. Check whether the one-way valve is
properly mounted.
2. Check whether the sampling line of the flow
sensor is correctly connected.
3. Use the diagnosis tool to test the status of
the flow sensor.
Pinsp Not
Achieved
Low
The Pinsp does not
reach the Pinsp setting
in pressure mode.
1. Check whether a leak occurs on the circuit.
2. Check the accuracy of the pressure sensor.
3. If the accuracy does not meet the
requirement, perform calibration.
4. Replace the VCM board and perform
calibration.
Vt Not
Achieved
Low
The Vt does not reach
the Vt setting in VCV
mode.
1. Check whether a leak occurs on the circuit.
2. Perform simulated ventilation on the
machine and check whether the Vte and Vti of
the machine are normal.
3. Check the accuracy of the flow sensor.