Mindray WATO EX-55, Service Manual

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5-5
pressure switch and the monitor
board and check the socket.
3. If the above two items are
normal, replace the monitor board.
O2 Supply
Failure H The O2 pressure was low. Use the same method to drive gas
pressure low to check the O2
pressure switch.
Sustained Airway
Pressure H The airway pressure in the
breathing circuit was
greater than sustained
airway pressure alarm limit
for 15 seconds.
Paw<
－
10cmH2O
H Less than the barometric
pressure for 10 cmH2O.
1. Check if the airway pressure
sensor is in correct measurement
status.
2. Check if the sampling line of the
airway pressure sensor is in normal
status.
3. Sensor failure. Replace the
monitor board.
ACGO On M ACGO was switched on 1. Switch off ACGO.
2. Check if the connection line of
ACGO is broken or short circuited.
3. If the ACGO switch is in correct
status, and its connection line and
connector are normal but the
problem persists, replace the
monitor board.
PEEP Valve
Failure M
Insp Valve
Failure M
PEEP Safety
Valve Failure M
Valve voltage error or
valve opening status error Check if the sensor is normal.
Replace the sensor or monitor board
when necessary.
Replace the expiratory valve
assembly.
O2 Flush Failure M Oxygen flushing having
lasted too long (more than
15 seconds) 1. Check if the O2 flush button fails
to pop up.
2. Check if the O2 flush pressure
switch is in normal status.
3. Check if the connection line of
O2 flush button and its connector
are normal.
4. Replace the monitor board.
Replace O2
sensor M O2 sensor failure Replace the O2 sensor.