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WHAT TO DO WHEN THE ALARM SOUNDS:
(1) Open the doors and windows to ventilate the area.
(2) Turn off all fuel appliances where possible. (The alarm can be silenced immediately by
pushing the Test/Hush button).
(3) Evacuate the property leaving the doors and windows open.
(4) Get medical help immediately for anyone suffering the effects of Carbon Monoxide
poisoning (headache, nausea), and advise that Carbon Monoxide poisoning is suspected.
(5) Ring your gas or other fuel supplier on their emergency number. Keep the number in a
prominent place.
(6) Do not re-enter the property until the alarm has stopped. (If the alarm has been silenced
by pressing the Test/Hush button, wait at least 5 minutes. The alarm will then check that the
CO has cleared).
(7) Do not use the fuel appliances again until they have been checked by an expert. In the
case of gas appliances this must be a Registered Gas Installer.
When the CO Alarm detects abnormal levels of CO (above 50ppm CO) the red light starts to flash
and the horn will sound within 90 minutes. At higher levels of CO the alarm will turn on sooner (see
Table B - page 8).
The CO Alarm will automatically reset once the CO has cleared. Pressing the Test/Hush button will
silence the CO Alarm immediately (below 300ppm CO). If CO is still present the red light and horn
will turn on again after about 4 minutes.
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B16132-R0-261ENRC-UC-ENG 7/11/07 11:52 AM Page 5