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Chapter 7: Maintenance
M2A-XL Transmitter Operator’s Manual
Replacing the Hydrophobic Membrane (CT-7 Series
Toxic Detector)
1. Turn off or disconnect power to the M2A-XL.
2. Unscrew the detector housing cap from the detector housing body.
3. Unplug the plug-in sensor from the four-socket pattern in the detector housing body.
4. Gently pry up the edge of the white hydrophobic membrane from the sensor face with a small
flat blade screwdriver or a similar tool.
5. Peel off the hydrophobic membrane. It may be necessary to clean off the sensor face to
remove any residue left from the adhesive backed membrane.
6. Install the new membrane on the face of the plug-in sensor.
7. Plug the sensor back into the four-socket pattern in the detector housing body.
8. Make sure the cap gasket is in place and screw the detector housing cap back onto the detector
housing body.
9. Turn on or reconnect power to the M2A-XL.
