Mindray A8 Service Manual

7-17
Message
Priority
Cause
Solution
Communication is lost
with the CPU board for
10s. Flowmeter Comm
Stop shall be detected
by both the main board
CPU and flowmeter
CPU.
3. If the problem persists, replace the
flow sensor (refer to 11.3.1).
Backup Flow
Control Enabled
Low
If the machine functions
properly, the backup
flow control system is
enabled manually.
If the electronic
flowmeter malfunctions,
the backup flow control
system is enabled
automatically.
1. If the electronic flowmeter error or
communication alarm exists, clear the
alarm according to instructions in this
table.
2. If the electronic flowmeter error or
communication alarm does not exist,
turn off the BFCS needle valve, and
close the BFCS door or switch to the
EFCS on the main screen.
2. If the attempt to switch to the
EFCS fails, restart the machine.
3. If the problem persists, replace the
EFCS assembly (refer to 11.1.14).
Backup Flow
Control Error
Med
1. The BFCS NO
two-way valve is faulty.
2. The monitored status
of the two
microswitches that
identify the position
status of the mechanical
door is inconsistent.
3. When the gas supply
pressure is normal, the
readings of the O2
branch flow sensor and
total flow sensor are
less than 0.5 L/min for
2s under the BFCS
state.
4. The electromagnet
voltage is beyond the
normal range, or its
control status is
inconsistent with the
monitored status.
1. Troubleshot the BFCS failure by
referring to 7.6.5.2.
2. If the BFCS valve is faulty, replace
the electronic flowmeter (refer to
11.1.14).
3. If the BFCS switch is faulty,
replace the BFCS switch control
board PCBA (refer to 11.1.5).
4. If the BFCS electromagnet is
faulty, replace the BFCS
electromagnet (refer to 11.1.5).
5. If the problem persists after
performing steps 3 and 4, replace the
EFCS control board (refer to 11.3.1).
Air Supply Failure Med
The air supply pressure
is low, or the pressure
sensor is faulty.
1. Check the connection of the air
supply and ensure that the gas supply
is normal. The gas supply pressure on
the AIR pipeline should be within the
range of 280- 600kPa (40-87PSI),
and the cylinder pressure should be
within the range of 6.9-20.0MPa
(1000-2900PSI). Check the pressures
displayed on the pressure gauge and
status screen.

Mindray A8 Specifications

General

Brand	Mindray
Model	A8
Category	Medical Equipment
Language	English