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3. Press the <DISABLE> key. The alphanumeric display shows the following message.
NOTE: XX = the point to be disabled.
4. Press the <ENTER> key. The alphanumeric display shows the action taken.
NOTE: The system indicates a trouble condition each time a point is disabled. Press the <TBL ACK> key
as required.
5. Repeat steps 2 through 4 above to disable additional points.
IMPORTANT
REPAIR/REPLACE THE FAILED CIRCUIT/DEVICE AS SOON AS POSSIBLE. ONCE REPAIRED, THE
DISABLED POINT SHOULD BE ENABLED AS SOON AS POSSIBLE. (See Section 10, How To Enable
A Disabled Point.)
TROUBLE INDICATIONS FOR TrueAlarm
SENSORS
NOTE: The following information is applicable to systems with Master Controller Software Version 3.0 or higher.
INTRODUCTION
The devices that are used for the TrueAlarm
operation are considered sensors instead of detectors, because these
devices do not determine alarm conditions. The TrueAlarm
smoke sensor is a measuring device that sends data
regarding smoke density to the 4100 control panel. The TrueAlarm
heat sensor operates in a similar fashion, but
sends temperature data instead of smoke density data. The 4100 uses this data to determine whether a trouble has
occurred. This basic operational difference is the key to TrueAlarm
operation.
The TrueAlarm
sensor has two automatic trouble indications:
• Dirty, and
• Excessively Dirty.
A “Smoke Detector Dirty” trouble condition is reported any time the average value on an individual sensor reaches
a set threshold value. At this time, the 4100 is still compensating for environmental factors and is holding the set
sensitivity level.
A “Smoke Detector Excessively Dirty” trouble condition is reported anytime the average value of an individual sensor
reaches a slightly higher threshold level. At this point, the 4100 can no longer compensate for environmental factors,
and the sensitivity level may begin to drift. Although an “excessively dirty” trouble is reported, the sensor will continue
to operate and will report an alarm condition if one is detected.
In addition to the two automatic trouble conditions, the 4100 software includes a pre-programmed digital pseudo
point (P132, Sensor Almost Dirty Log Enable) that can be turned ON at the front panel to allow a TrueAlarm
sensor
that is close to being a “dirty” sensor to report as if it were one. This is useful when maintenance is being scheduled
for dirty sensors, as it provides a means of seeing if other sensors are approaching a dirty state.
Press <ENTER> to DISABLE
MONITOR ZONE: ZNXX
ACTION TAKEN
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