01Series Operator’s Manual Maintenance • 24
3. Rotate the captive battery cover screw counterclockwise to remove
battery compartment door.
4. Carefully remove the old alkaline batteries.
5. Carefully install the new AAA alkaline batteries. Follow the battery
diagram inside the battery compartment.
6. Reinstall the battery cover.
NOTE: If the unit has been without batteries or if the old batteries have
been dead for an extended period, allow 10 minutes after the new
batteries have been installed for the sensor to stabilize.
Replacing the Sensor
WARNING: Replace the sensor in a non-hazardous environment.
1. Verify that the 01 Series is off.
2. Remove the sensor end protective rubber boot.
3. With a small Phillips screwdriver, carefully unscrew the two screws that
hold the sensor retainer in place.
POWER
MODE
AIR
CO-01
CO
Figure 6: Removing the Battery Compartment Door
Sensor Retainer
Sensor
POWER
MODE
AIR
CO-01
CO
Figure 7: Removing the Sensor Retainer
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