ABB 2CSE1220EL Manual page 27

OPERATING INSTRUCTIONS
When the alarm situation ends, the detector automatically returns to its normal
operating mode.
! WARNING: In the event of an alarm:
1) Put out any live flames.
2) Close the gas meter cock.
3) Do not switch lights on or off. Do not use electrical appliances or devices.
4) Open doors and windows to increase the air circulation.
If the alarm stops, find out what set off the alarm and act accordingly.
If the alarm continues and you cannot find what set off the alarm or cannot eliminate it,
leave the building immediately and call the emergency services from an external line.
WARNING : a smell of gas might be detected before the appliance gives the alarm.
H O W I T W O R K S
Device alarm activated.
green
When the alarm threshold is exceeded the green
and red LEDs instantly light up and the acoustic
signal is activated. After 20 seconds the relay
switches over (solenoid valve command).
red
green
red
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