Mindray WATO EX-55Pro, Service Manual

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8-15
Message
Alarm
Priority
Cause Solution
should disappear. If the alarm does not
disappear, the pressure switch fails. In this
case, replace the pressure switch. If the
pressure switch does not fail, check the
connection between the pressure switch and the
VCM board.
3. If both of the preceding items are normal,
replace the VCM board.
O2 Supply
Failure
High
The O2 supply
pressure is low.
Use the same method for solving the problem
of low drive gas pressure to check the O2
pressure switch.
Drive Gas
Switch Valve
Failure
High
The control status of
the drive gas valve is
different from the
detected status. 1. On the [Diagnosis] menu, switch the drive
gas valve to check whether the normal status is
restored.
2. Restart the machine for a self test again.
Fresh Gas
Flow Too High
Low
The set fresh gas flow
is greater than 2
L/min, and exceeds
the gas delivery flow
0.2 L/min.
Reduce the fresh gas flow.
ACGO 3-way
Valve Failure Medium The ACGO 3-way
valve status is in error. 1. Check the connection of the 3-way valve.
2. Replace the 3-way valve assembly.
3. Replace the VCM board.
Automatic
Ventilation
Disabled Low The power-on self test
fails, and the result is
"Manual Only". 1. Restart the anaesthesia machine.
2. If the problem persists, check the
corresponding module based on the result of
the power-on self test.
3. If the problem persists, replace the
corresponding module based on the result of
the power-on self test.
Auto
Ventilation
Disabled-Leak
Test Failed Low The automatic circuit
leak test fails. 1. Check whether the circuit and pipeline are
correctly mounted. (Check whether the
sampling port and the drain valve are blocked.)
2. Conduct the leak test again.
Auto
Ventilation is
Non-Functional High The machine can only
be manually
ventilated, but the
Auto/Manual switch is
in Auto position. 1. Set the Auto/Manual switch to the Manual
position.
2. Restart the machine for a self test again.
Pressure
Monitoring For VPM: The
monitored value of 1. Check whether the AD of the zero point of
each sensor is within the valid range. If the AS