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50 Instruction 3015-4275
Working with Alarms
Functional Overview
If the PPM level for any zone exceed its designated spill, leak, or evacuate thresholds, an alarm condition will
be created. Once the AGM300 completes a measurement cycle in the affected zone the alarm condition will be
indicated. At that time the red ALARM LED on the AGM300 will glow. Additionally, an external alarm device
may activate and an audible alarm may sound if those features have been enabled (Pages
17 & 38).
The next time the ADM800 polls the affected monitor its red ALARM LED will glow. Additionally, an
external alarm device may activate and an audible alarm may sound if those features have been enabled
(Pages
28 & 35).
The alarm condition may or may not have to be acknowledged for the system to return to normal operation.
Responding To Alarms
There are two screens from which an operator can respond to alarms:
• From the System Screen (Page
31) press the key adjacent to the blinking ALARMS field to go to the Alarm
Summary Screen.
• From the top level Zone Screen (Page
44) press the ALARMS key at the bottom of the display window to go
to the Alarm Summary Screen.
Alarm Summary Screen
The Alarm Summary Screen displays a list of all alarm conditions pending across the network. The screen is
divided into 8 boxes, with each box representing a single alarm. If more than 8 alarms are pending additional
pages can be displayed by pressing the MORE key.
Each box displays the zone number, zone name, and the current PPM reading. A flashing box indicates an
alarm that has not been acknowledged. A static box represents an alarm that has been acknowledged but has
not yet been cleared from the system.