Alarms - Crowcon IR Display Instructions D'installation, D'utilisation Et De Maintenance

6. Alarms

If the LED changes from green to red, the IRmax is detecting a potentially dangerous level
of gas. *
Alarm 1
If the gas level reaches 20% (of LEL or by volume according to the choice made at the host
IRmax), the red LED will show.
If the gas level subsequently falls, the alarm will clear when the gas level falls below 19%.
Alarm 2
If the gas level reaches 40%, the red LED will flash.
If the gas level later falls, the alarm will clear when the gas level falls below 39%.
In either case, the backlight will be on while the IRmax is in alarm status.
* Alarm levels are factory set to 20/40 per cent LEL.
NOTE: Alarms do not override other operations.
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