REPLACEMENT PROCEDURES (continued) NM2C
4.24 SPIROMED Respiratory Volume Sensor
The respiratory volume sensor is installed between the top of the absorber
assembly and the expiratory valve. Figure 4-24 shows the volume sensor
mounting and gasket arrangement, and connection to the sensor interface
panel.
4.24.1 Set the System Power switch to STANDBY.
4.24.2 Disconnect the sensor plug from the volume sensor receptacle on the
sensor interface panel.
4.24.3 Remove the expiratory valve by unscrewing the valve retaining nut.
4.24.4 Removethe volumesensor from the absorber assembly by unscrewing
its retaining nut.
CAUTION: Do not twist the body of the sensor when loosening the retaining
nut. Hold the sensor while loosening the retaining nut to
prevent damage to the unit.
4.24.5 Install the replacement volume sensor on the absorber assembly.
Ensure that the gasket is seated properly and hand tighten the
retaining nut.
4.24.6 Install the expiratory valve on the sensor. Ensure that the gasket is
seated properly and hand tighten the valve retaining nut.
4.24.7 Connect the sensor plug to the volume sensor receptacle on the sensor
interface panel.
4.24.8 Restore power to the machine and perform the respiratory flow
monitor calibration procedure given in Section 5.
4.24.9 Perform the PMS Procedure given in Section 6.
4-72
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