20 NFS2-3030 Operations Manual — P/N 52546:N1 06/20//2014
General Information The Main Menu
Display
Lines 1 through 4 - Event information
Line 5 - Screen title
Lines 6 through 9 - The Custom Action Message programmed for the point in alarm
Line 10 - blank
Line 11 and 14 - These lines exist only for smoke/heat detectors. They do not display for
wireless smoke detectors.
Line 11
VALUES:
The screen displays the Alarm and Prealarm values that are in effect when more information is
requested. For example, if occupied settings are in effect, occupied values will display.
121% OF ALARM - This field gives the detector reading as it relates to its preprogrammed
alarm level value (indicated in the next line on the screen). The example above shows the
detector exceeding the alarm level by 21%.
Note: For Beam detectors in CLIP mode, the alarm value will always equal zero (0)% when it
is not in alarm or 100% when it is in alarm.
145% OF PREALARM - This field gives the detector reading as it relates to its
preprogrammed prealarm level value (indicated in the next line on the screen). The example
above shows the detector exceeding the prealarm level by 45%.
Line 12
The screen displays the Alarm and Prealarm levels that are in effect when more information is
requested. For example, if unoccupied settings are in effect, they will display.
ALARM: 6=1.66% - Six is the preprogrammed alarm level value for this detector: its
value is 1.66%, indicating the percent per foot obscuration value assigned to level 6.
PREALARM: 3=0.47% - Three is the preprogrammed alarm level value for this detector:
its value is 0.47%, indicating the percent per foot obscuration value assigned to level 3.
Line 13
ACTION/STATUS: NONE/VERY CLEAN - This displays the maintenance status of
the device. The message that appears in this field depends on the drift compensation value. A
detector will automatically compensate for environmental contaminants and other factors over
time, until the tolerance value has been exceeded. The FACP will signal a trouble condition
when this level has been reached. Refer to the following table for messages and required
action.
For FSC-851 IntelliQuad detectors in CLIP mode, the status will display as None/Very Clean
until it displays Needs Immediate Cleaning. No intermediate levels are displayed.
Message Drift Compensation % Description
None/Very Clean Less than 50 No action necessary. The detector readings are near
ideal.
None/Fairly Clean 50 - 69 No action necessary. The detector will activate at the
selected sensitivity level.
Needs Cleaning 70 - 79 Clean the detector soon. The detector may cause a
false alarm because it has reached the drift
compensation tolerance value.
Needs Immediate Cleaning 80 - 100 Clean immediately! The detector is a false alarm risk.
The drift compensation tolerance value has been
exceeded.
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