Mindray WATO EX-65Pro - Page 268

8-14
Message
Alarm
Priority
Cause Solution
4. If the accuracy does not meet the
requirement, perform calibration.
Patient Circuit
Leak
Medium
1. The Vte is smaller
than Vti by 200 ml or
by 50% for 30s
consecutively.
2. The Vti is smaller
than Vt delivery in
volume mode.
3. The patient is not
connected.
1. Check whether the circuit and flow sensor
are correctly connected.
2. Check whether the sensor and Vt meet the
accuracy requirement.
3. Check whether a leak occurs on the circuit.
CO2 Absorber
Canister Not
Locked
High
The CO2 absorber
canister is not
mounted.
1. Mount the CO2 absorber canister.
2. Check the cable connection between the
CO2 absorber canister and VCM board. When
necessary, replace the cable.
3. If the problem persists, replace the switch on
the CO2 absorber canister.
4. If the problem persists, replace the VCM
board.
O2 Sensor
Disconnected
Low
The O2 sensor is
disconnected.
1. Ensure that the cable of the O2 sensor is
properly connected.
2. On the [Calibrate] menu, check the output
voltage of the O2 sensor.
3. Replace the O2 sensor.
Replace O2
sensor
Medium
The O2 concentration
is less than 5%.
1. On the [Calibrate] menu, check the output
voltage of the O2 sensor.
2. Re-calibrate the O2 sensor.
3. Replace the O2 sensor.
Calibrate O2
Sensor
Low
The O2 concentration
is greater than 110%
or ranges between 5%
and 15% for 3s
consecutively.
1. Re-calibrate the O2 sensor.
2. Replace the O2 sensor.
Ventilator
Comm Stop
High
The CPU board cannot
communicate
normally with the
VCM board for 10s
consecutively.
1. Restart the anaesthesia machine.
2. Reconnect the communication cable.
3. If the problem persists, replace the VCM
board.
4. If the problem persists, replace the CPU
board.
Drive Gas
Pressure Low
High
The drive gas pressure
is low.
1. Check whether the gas supply is normal.
2. Short circuit the pressure switch. The alarm