Simplex 4098 Applications Manual page 56

MAINTENANCE AND TESTING,
Trouble Indications for
TrueAlarm Sensors
(continued)
Continued
Table 11. TrueAlarm Troubles and Descriptions
Trouble Indication
Almost Dirty Using the front panel keys, it is possible for a
Simplex Technical Representative to turn ON a
digital pseudo point in the FACP that allows an
"almost dirty" sensor to report a trouble. Although
the "almost dirty" sensor is holding its sensitivity
level, you can schedule maintenance for the
sensor before the dirty sensor trouble occurs.
Dirty A "dirty" indication means that the sensor is
holding its sensitivity level, but that you should
schedule maintenance for the sensor. Clean the
sensor as required and, when necessary, call
Simplex for service.
Excessively Dirty The "excessively dirty" indication means that the
sensor is no longer compensating for dirt and dust.
Because nuisance alarms are possible with this
condition, sensors must be cleaned or replaced
immediately. When necessary, call Simplex for
service.
Self-Test Abnormal All FACP system sensors are automatically tested
once every minute. When a sensor fails to report
properly to the FACP, a "Self-Test Abnormal"
condition occurs. Since the sensor is not working
properly, it must be replaced. Replace it, or call
Simplex for service.
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