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To Lock the Battery Compartment (continued)...
3. Push the locking pin through the black dot on the
label on the back of the CO Alarm.
TO UNLOCK THE BATTERY COMPARTMENT:
Once the CO Alarm is installed, you must disconnect
it from the AC power before unlocking the battery
compartment.
ELECTRICAL SHOCK HAZARD. Turn off the power
to the area where the CO Alarm is installed before
removing it from the mounting bracket. Failure to
turn off the power first may result in serious elec-
trical shock, injury or death.
Always discharge the branch circuit before servic-
ing an AC or AC/DC CO Alarm. First, turn off the
AC power at the circuit breaker or fuse box. Next,
remove the battery from CO Alarms with battery
back-up. Finally, press and hold the test button for
5-10 seconds to discharge the branch circuit.
1. Remove the CO Alarm from the mounting bracket.
If the unit is locked to the bracket, see the section
“To Deactivate the Locking Feature.”
2. Disconnect the power connector by gently prying
it away from the back of the CO Alarm.
3. Insert a flathead screwdriver under the head of
the locking pin, and gently pry it out of the battery
compartment lock. (If you plan to re-lock the bat-
tery compartment, save the locking pin.)
4. To re-lock the battery compartment, close the bat-
tery door and reinsert the locking pin in the lock.
5. Reconnect the power connector to the back of
the CO Alarm, reattach the CO Alarm to the
mounting bracket, and restore the power
When replacing the battery, always test the CO Alarm
before re-locking the battery compartment.