Mindray A9 Service Manual

7-25
Message
Priority
Cause
Solution
4. If the problem persists, replace the
monitoring and controlling assembly
(refer to 11.1.11).
Fresh Gas Flow
Too High
Low
In volume control
ventilation mode, the
fresh gas flow setting
exceeds the inspiratory
gas supply flow.
1. Decrease the fresh gas flow setting as
required.
Breathing System
Not Mounted
High
The breathing circuit is
not correctly mounted.
1. Check whether the circuit is installed
in place. If necessary, re-install the
circuit.
2. After confirming that the circuit is
installed in place., select Setup >
Service > Data Monitors > Status
Monitor, and check whether the circuit
switch is set to On. If yes, the alarm will
disappear in 3-5s.
3. If the circuit switch is set to Off in
step 2, replace the circuit switch (refer to
11.5.1).
Volume Exchanger
Not Mounted
High
The volume exchanger is
not correctly mounted.
1. Check whether the volume exchanger
is installed in place. If necessary,
re-install the volume exchanger.
2. Disassemble the circuit, open the VE
door, push the VE net inward, and check
whether the alarm is cleared. If the alarm
is not cleared, replace the VE switch
(refer to 11.1.15).
AMV: Cannot
Meet Target
Low
In AMV mode, the
target tidal volume and
respiratory rate to
minimize the work of
breathing cannot be
achieved.
1. Check whether IBW is properly set.
2. Check whether the Vt high alarm limit
is properly set.
3. Check whether MV% is properly set.
4. If the alarm still exists, the current
control target to minimize the patient's
work of breathing is beyond the safe
range. It is recommended that you switch
to another ventilation mode.
Vaporizer Dock
Failure
High
1. The fresh air inlet
valve of the vaporizer
malfunctions.
2. The bypass valve
malfunctions.
1. Select Setup > Service > Data
Monitors > Flow Test. On the
Diagnostics screen, set the vaporizer
BYPASS pilot valve to On, and check
whether the status on the left also
changes to On. If the status changes to
On, replace the vaporizer base valve
assembly (refer to 11.1.12).
2. Set the fresh gas pilot valves of
vaporizer 1 and vaporizer 2 to On, and
check whether the status on the left also
changes to On. If the status changes to
On, replace the vaporizer base valve
assembly (refer to 11.1.12).
3. If the status does not change to On in

Mindray A9 Specifications

General

Brand	Mindray
Model	A9
Category	Medical Equipment
Language	English