Detector Cleaning - Bryant Preferred 551J Service And Maintenance Instructions

IMPORTANT: Failure to follow this NOTICE may result in
an unnecessary evacuation of the facility.
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 for approximately 60 seconds until the sen-
sor's Alarm LED turns on and its Dirty LED flashes twice.
2. Reset the sensor by removing the test magnet and then
holding it against the sensor housing again for approxi-
mately 2 seconds until the sensor's Alarm LED turns off.
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 NOTICE may 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 the dirty sensor test operation,
disconnect all auxiliary equipment from the controller and
notify proper authorities if connected to a fire alarm system.
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. 35 and configured to
operate the controller's supervision relay. For more information,
see "Changing the Dirty Sensor Test."
12
1
3
SUPERVISION RELAY
CONTACTS [3]
WIRE MUST BE
ADDED BY
INSTALLER
Fig. 35 — Remote Test/Reset Station Connections
IMPORTANT: Failure to follow this NOTICE can result in
an unnecessary evacuation of the facility.
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 NOTICE can result in
an unnecessary evacuation of the facility.
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 NOTICE can result in
an unnecessary evacuation of the facility.
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. 36.)
2. Using a vacuum cleaner, clean compressed air, or a soft
bristle brush, remove loose dirt and debris from inside the
sensor housing and cover.
Use isopropyl alcohol and a lint-free cloth to remove dirt
and other contaminants from the gasket on the sensor's
cover.
29
SMOKE DETECTOR
CONTROLLER
TB3
−
1
AUXILIARY
EQUIPMENT
+
2
14
SD-TRK4
Trouble
13 5
POWER
18 VDC (-)
19 4
ALARM
1
15
RESET/TEST
2 3
18 VDC (-)
2
20