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7-4-2 Exhalation Flow Sensor
If replacement of the exhalation flow sensor is required, use only recommended exhalation
flow sensors by manufacturer (See section 2-3). The exhalation flow sensor should be
replaced every 6 months or when the exhalation flow sensor failure message is displayed
during exhalation flow sensor calibration. Take the following actions to replace this sensor:
Detach the exhalation flow sensor from exhalation valve.
Carefully remove the exhalation flow sensor and replace it with a correct one. Connect the
flow sensor cable securely.
7-4-3 Exhalation Valve and Membrane
Take the following actions to replace the exhalation valve:
