Carrier 50TCQ 04 Series Service And Maintenance Instructions page 35

Dirty Controller Test
The dirty controller test checks the controller's ability to
initiate a dirty sensor test and indicate its results.
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Pressing the controller's test/reset switch for longer
than seven seconds will put the duct detector into the
alarm state and activate all automatic alarm responses.
Dirty Controller Test Procedure
1. Press the controller's test/reset switch for two
seconds.
2. Verify that the controller's Trouble LED flashes.
Dirty Sensor Test
The dirty sensor test provides an indication of the sensor's
ability to compensate for gradual environmental changes.
A sensor that can no longer compensate for environmental
changes is considered 100% dirty and requires cleaning or
replacing. You must use a field provided SD−MAG test
magnet to initiate a sensor dirty test. The sensor's Dirty
LED indicates the results of the dirty test as shown in
Table 11.
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Holding the test magnet against the sensor housing for
more than seven seconds will put the duct detector
into the alarm state and activate all automatic alarm
responses.
Table 11 – Dirty LED Test
FLASHES
1 0-25% dirty. (Typical of a newly installed detector)
2
3
4
Dirty Sensor Test Procedure:
1. Hold the test magnet where indicated on the side of
the sensor housing for two seconds.
2. Verify that the sensor's Dirty LED flashes.
DESCRIPTION
25-50% dirty
51-75% dirty
76-99% dirty
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
Changing the dirty sensor test operation will put the
detector into the alarm state and activate all automatic
alarm responses. Before changing dirty sensor test
operation, disconnect all auxiliary equipment from the
controller and notify the proper authorities if
connected to a fire alarm system.
Changing the Dirty Sensor Test
By default, sensor dirty test results are indicated by:
S The sensor's Dirty LED flashing.
S The controller's Trouble LED flashing.
S The controller's supervision relay contacts toggle.
The operation of a sensor's dirty test can be changed so
that the controller's supervision relay is not used to
indicate test results. When two detectors are connected to
a controller, sensor dirty test operation on both sensors
must be configured to operate in the same manner.
Configure the Dirty Sensor Test Operation:
1. Hold the test magnet where indicated on the side of
the sensor housing until the sensor's Alarm LED turns
on and its Dirty LED flashes twice (approximately 60
seconds).
2. Reset the sensor by removing the test magnet then
holding it against the sensor housing again until the
sensor's Alarm LED turns off (approximately 2
seconds).
Remote Station Test
The remote station alarm test checks a test/reset station's
ability to initiate and indicate an alarm state.
NOTICE
OPERATIONAL TEST ALERT
Failure to follow this ALERT can result in an
unnecessary evacuation of the facility.
This test places the duct detector into the alarm state.
Unless part of the test, disconnect all auxiliary
equipment from the controller before performing the
test. If the duct detector is connected to a fire alarm
system, notify the
performing the test.
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proper authorities before