M2A Transmitter Operator’s Manual
59
4. Carefully match the replacement sensor’s male pins with the 2-socket pattern in the top section and plug it
in.
5. Make sure the cap gasket is in place and screw the detector cap back on to the detector housing.
6. Turn on or reconnect power to the M2A.
NOTE:
Allow the replacement sensor to warm up for 15 minutes
before you continue with the next step.
7. Calibrate the detector as described in “Calibration, Combustible Gas, CO2, and Toxic Versions” on page 50.
Replacing an ESM-01 Plug-in Sensor
1. Turn off or disconnect power to the M2A.
2. Unscrew the detector cap from the detector housing body. Take care not to lose the cap gasket. If the
splashguard begins to unscrew from the detector cap, make sure to remove the detector cap also. See
Figure 7 for an illustration of the ESM-01 detector.
3. Unplug and remove the sensor.
4. Remove the black plug from the top of the replacement sensor.
5. Carefully match the replacement sensor’s plug with the socket in the housing body and plug it in.
WARNING:
The ESM-01 detectors cannot be changed from one type to another. Replace the plug-in
sensor only with the same type of ESM-01 sensor.
6. Make sure the cap gasket is in place and screw the detector cap back onto the housing body. If the splash
guard was unscrewed from the detector cap, screw it back onto the detector cap.
7. Turn on or reconnect power to the M2A.
NOTE:
Allow the replacement sensor to warm up for 15 minutes
before you continue with the next step.
8. Calibrate the detector as described in “Calibration, Combustible Gas, CO2, and Toxic Versions” on page 50.
Replacing the Hydrophobic Membrane (Non-XP CO, H
2
S, and O
2
Detectors)
1. Turn off or disconnect power to the M2A.
2. Unscrew the detector housing cap from the detector housing body.
3. Gently pry up the edge of the white hydrophobic membrane with a small flat blade screwdriver or a similar
tool.
4. Peel off the hydrophobic membrane. It may be necessary to clean off the detector housing cap face to
remove any residue left from the adhesive backed membrane.
5. Install the new membrane in the recess on the face of the detector housing cap.
6. Make sure the cap gasket is in place and screw the detector housing cap back onto the detector housing body.
7. Turn on or reconnect power to the M2A.
Replacing the Hydrophobic Membrane (CT-7 Series Toxic Detector)
1. Turn off or disconnect power to the M2A.
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.
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