5-6
Patient Circuit
Leak
M
A leak was detected in the
patient circuit.
1. Check the breathing circuit
connections and flow sensor
connections.
2. Check the tidal volume
measurement accuracy of the
sensor.
3. Check for breathing system
leakage.
M
The measured value by the
pressure sensor exceeded
the range. Or, the zero
point of the pressure sensor
was outside of the range.
1. Disconnect the gas supply and
disconnect connection to the patient
airway. Check the counts value of
pressure sensor.
2. If there is a great deviation of
zero point, check if the pressure
sampling line is blocked or pressed.
3. Perform manual zeroing.
4. Restart the machine.
If the problem persists, replace the
monitor board.
Pressure
Monitoring
Channel Failure
H The
auxiliary
monitor
board detected pressure
monitoring error.
1 In the A/D channels of the
auxiliary monitor board, check the
statuses of the airway pressure
sensor and the PEEP pressure
sensor.
2. Replace the auxiliary monitor
board in case that pressure
monitoring failure occurs to the
auxiliary monitor board.
Volume
Monitoring
Disabled
M Flow
sensor
monitoring
was disabled or ACGO was
switched on.
1. Fix the flow sensor or ACGO
problems.
2. Eliminate the alarm by referring
to the corresponding alarm item.
Calibrate Flow
Sensor
L
Last calibration of the flow
sensor and inspiratory
valve failed. Or, great drift
occurred to the flow sensor
and inspiratory valve.
Perform factory calibration. Refer
to
4Maintenance and Calibration
.
Calibrate PEEP
Valve
L
Last calibration of the Paw
sensor and PEEP valve
failed. Or, great drift
occurred to the Paw sensor
and PEEP valve.
Perform factory calibration. Refer
to
4Maintenance and Calibration.
Summary of Contents for WATO EX-55
Page 1: ...WATO EX 55 65 Anesthesia Machine Service Manual ...
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Page 4: ...II FOR YOUR NOTES ...
Page 6: ...IV FOR YOUR NOTES ...
Page 12: ...6 FOR YOUR NOTES ...
Page 58: ...3 22 FOR YOUR NOTES ...
Page 242: ...6 54 6 4 1 Electrical Connections Electrical Circuit Diagram ...
Page 260: ...6 72 FOR YOUR NOTES ...
Page 261: ...7 1 7 Parts 7 1 Main Unit 7 1 1 Main Unit 7 1 1 1 Exploded View ...
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