inject the CO gas into the gas entry holes, see Figure 1. When it senses the CO it
flashes the red light (as per Table B) to confirm that is detecting CO gas.
How to distinguish between CO Alarm and Smoke Alarm Warnings
The CO Alarm has a distinctive on-off sound of 3 pulses, followed by a pause as
compared with a typical Smoke Alarm which has a rapid pulsing sound.
In addition, when your CO Alarm is sounding, the red alarm light in the centre of the
cover will be flashing.
Testing both your CO Alarms and Smoke Alarms weekly will help you and your family
to clearly distinguish between them in an emergency.
7. MAINTAINING YOUR CO ALARM
Clean the outside case by occasionally wiping with a clean damp cloth, (after first
disconnecting the mains supply on an Ei225EN unit at the distribution/fuse board or by
unplugging the Ei220EN unit). Do not use any cleaning agents, bleaches, detergents or
polishes, including those in aerosol cans. Avoid spraying air fresheners, hair spray, paint
or other aerosols near the CO Alarm. Do not place air fresheners near the unit.
Use the narrow nozzle of a vacuum cleaner to remove fluff and other contamination
from the cover slots to ensure CO gas can reach the sensor.
Caution: Do not paint the CO Alarm.
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