Replace gas module

Enter service mode so any fluctuations in the data caused from this activity can be excluded from air quality reports.

Keep your monitor on. You don’t need to turn it off for this procedure.

Disconnect the blue communications cables and red and black power cables.

Disconnect the sample inlet and exhaust tubes.

Loosen the retaining screws and carefully remove the module.

Carefully insert the new module and screw it in.

Take the luer caps off the sample inlet and exhaust connections.

Connect the sample inlet and exhaust tubes to the module.

Connect the communication and power cables.

Make sure the polarity of the red and black cable is the correct.

You only need to do this step if you are replacing the module with a different type of module.

Go to the Configure app and click Settings from the side menu.

Remove the old module from the Active Sensors list by hovering over the sensor name and clicking the cross that displays.

Click Save when the confirmation message appears.

Select the new module from the Add new sensor drop-down.

Click Save.

Go to the Calibration and Service app and select Calibration from the side menu.

Select your replaced gas channel from the System panel.

In the details panel, set the offset to 0.000 and the gain to 1.000.

If you replace a gas module with the same type of module, the total inlet flow rate should remain the same.

If you replace a gas module with a different type of module, the overall flow rate of the main gas inlet might change.

Read the PDF attached to the end of this user guide to understand the expected flow rate for the gas inlet.

Measure the inlet flow rate to make sure it's as expected.

Record the results of this service activity in the monitor's journal.

Exit service mode.

To see the process of replacing a module in an AQM 65, watch this video.