First Alert DC10-500 Carbon Monoxide Alarm User Manual


 
11
When the Alarm Sounds (Continued)
What To Do If The CO Alarm Sounds
1. Press the Test/Silence button (On App or on unit).
2. Call your emergency services, fire department or 911.
3. Immediately move to fresh air—outdoors or by an open door or window. Do a head count to check that all persons
are accounted for. Do not re-enter the premises, or move away from the open door or window until the emergency
services responder has arrived, the premises have been aired out, and your CO Alarm remains in its normal condition.
4. After following steps 1-3, if your CO Alarm reactivates within a 24-hour period, repeat steps 1-3 and call
a qualified appliance technician to investigate for sources of CO from fuel-burning equipment and appliances,
and inspect for proper operation of this equipment. If problems are identified during this inspection have the
equipment serviced immediately. Note any combustion equipment not inspected by the technician, and
consult the manufacturers’ instructions, or contact the manufacturers directly, for more information about
CO safety and this equipment. Make sure that motor vehicles are not, and have not, been operating in an
attached garage or adjacent to the residence.
NOTE: A qualified appliance technician is defined as “a person, firm, corporation, or company that either in person or
through a representative, is engaged in and responsible for the installation, testing, servicing, or replacement of heating,
ventilation, air conditioning (HVAC) equipment, combustion appliances and equipment, and/or gas fireplaces or other
decorative combustion equipment.”
Using the Silence Feature
The Silence Feature
This feature is intended to temporarily silence the horn while you identify and correct the problem. Do not use the Silence
Feature in emergency situations. It will not correct a CO problem or extinguish a fire. The Silence Feature can temporarily
quiet an unwanted alarm for several minutes. You can silence this Smoke/CO Alarm by pressing the Test/Silence button
on the alarm cover for at least 3-5 seconds or via the Onelink app. After the Test/Silence button is released, the Red LED
stops during the silence mode.
Silence the End of Life Signal
This silence feature can temporarily quiet the End of Life warning “chirp” for up to 2 days. You can silence the End of Life
warning “chirp” by pressing the Test/Silence button or via the Onelink app. The horn will chirp, acknowledging that the
End of Life silence feature has been activated. After approximately 2 days, the End of Life “chirp” will resume.
WARNING: Never deactivate the unit to quiet an unwanted alarm. Deactivating
the alarm disables the unit and removes your protection.
!
When the Smoke Alarm is Silenced When the CO Alarm is Silenced
The Smoke Alarm will remain silent for up to 15
minutes, then return to normal operation.
The CO Alarm will remain silent for up to 4
minutes.
If the smoke has not cleared or continues to
increase, the device will go back into alarm.
After 4 minutes, if CO levels remain potentially
dangerous, the horn will start sounding again.