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Alecto COA3920 Manual

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USER MANUAL
10 minutes the concentration is still above 200PPM the alarm will be activated again. During the hush
function, press the test button to immediately disable the hush function and make the alarm audible.
LED INDICATION:
Red LED Alarm, carbon monoxide present
Yellow LED Sensor problem
Green LED Normal functioning, the LED ashesevery45seconds
BATTERY INFORMATION INDICATION:
1. Every 45 seconds the battery is automatically checked.
2. Every45secondsthegreenLEDwilllightupbrieyaslongasthetotalbatteryvoltageisabove3,6
Volt. This means that the battery capacity is okay. If the battery voltage drops below 3.6 Volts, the
yellow“Fault”1xLEDwillbrieylightuponceaminuteandaone-timebeepwillsound.Nowthe
batteries should be replaced as soon as possible.
When empty batteries are indicated, the batteries should be replaced as soon as possible.
Use High Energy Alkaline batteries (3 x LR6 / 1.5V AA). Rechargeable batteries are not suitable.
With both the supplied batteries and most A brand batteries on the market, it will take approximately 18
months before these are empty.
SCREEN MESSAGES :
REASON FOR SENSOR FAULT:
Faults can be caused by broken circuitry, a faulty sensor or faulty electronic parts.
SENSOR FAULT CAUSED BY CHEMICAL GASES:
When volatile chemical gases such as alcohol are the cause for error detection, this may be corrected by
switching the detector off and leave it in fresh air for 24 hours. This will restore the sensor. If the error is
not cleared after these 24 hours, the detector is faulty and should be replaced. Don’t repair the detector
yourself, but have it repaired by the importer.
When the alarm is contaminated and damaged by high concentrations of chemical gases, the sensor could
be affected. This will lead to a temporary error or permanent damage. When the alarm sounds and you
can smell a chemical gas, this could be the reason. Carbon monoxide is a colourless and odourless gas.
Chemical gases do have an odour.
The following substances and gases can cause false alarms or permanently damage the detector:
Methane, propane, iso-butane, ethylene, ethanol, alcohol, iso-propanol, benzene, toluene, acid, ether,
Standard screen High CO concentration
>600PPM
Error message
Internal test screen End of sensor life
(Replace product)
Mute function on
Startup screen
… 41 …


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