Carrier WeatherExpert 48LC Series Service And Maintenance Instructions page 19

Table 2 — Dirty LED Test
FLASHES
1
(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.
IMPORTANT: Failure to follow this caution may result in
personnel and authority concern.
Changing the dirty sensor test operation will put the detec-
tor into the alarm state and activate all automatic alarm
responses. Before changing dirty sensor test operation, dis-
connect 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:
• The sensor's Dirty LED flashing.
• The controller's Trouble LED flashing.
• 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.
To 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.
IMPORTANT: Failure to follow this caution may result in
personnel and authority concern.
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
proper authorities before performing the test.
SD-TRK4 Remote Alarm Test Procedure
1. Turn the key switch to the RESET/TEST position for seven
seconds.
2. Verify that the test/reset station's Alarm LED turns on.
3. Reset the sensor by turning the key switch to the RESET/
TEST position for two seconds.
4. Verify that the test/reset station's Alarm LED turns off.
REMOTE TEST/RESET STATION DIRTY SENSOR TEST
The test/reset station dirty sensor test checks the test/reset station's
ability to initiate a sensor dirty test and indicate the results. It must
be wired to the controller as shown in Fig. 27 and configured to
DESCRIPTION
0-25% dirty
25-50% dirty
51-75% dirty
76-99% dirty
operate the controller's supervision relay. For more information,
see "Changing the Dirty Sensor Test."
12
1
TB3
3
14
SUPERVISION RELAY
CONTACTS [3]
13
19
WIRE MUST BE
ADDED BY
15
INSTALLER
20
Fig. 27 — Remote Test/Reset Station Connections
IMPORTANT: Failure to follow this caution may result in
personnel and authority concern.
If the test/reset station's key switch is left in the RESET/
TEST position for longer than seven seconds, the detector
will automatically go into the alarm state and activate all
automatic alarm responses.
IMPORTANT: Failure to follow this caution may result in
personnel and authority concern.
Holding the test magnet to the target area for longer than
seven seconds will put the detector into the alarm state and
activate all automatic alarm responses.
Dirty Sensor Test Using an SD-TRK4
1. Turn the key switch to the RESET/TEST position for two
seconds.
2. Verify that the test/reset station's Trouble LED flashes.
DETECTOR CLEANING
Cleaning the Smoke Detector
Clean the duct smoke sensor when the Dirty LED is flashing con-
tinuously or sooner, if conditions warrant.
IMPORTANT: Failure to follow this caution may result in
personnel and authority concern.
If the smoke detector is connected to a fire alarm system,
first notify the proper authorities that the detector is under-
going maintenance then disable the relevant circuit to avoid
generating a false alarm.
1. Disconnect power from the duct detector then remove the
sensor's cover. (See Fig. 28.)
2. Using a vacuum cleaner, clean compressed air, or a soft bris-
tle brush, remove loose dirt and debris from inside the sensor
housing and cover. Use isopropyl alcohol and a lint-free cloth
19
SMOKE DETECTOR
CONTROLLER
−
1
AUXILIARY
EQUIPMENT
+
2
SD-TRK4
Trouble
5
POWER
18 VDC (-)
4
ALARM
1
RESET/TEST
2 3
18 VDC (-)
2