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32
Fig. 47 —
Remote Test/Reset Station Connections
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.
1. Disconnect power from the duct detector then remove the
sensor’s cover. (See Fig. 48.)
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
to remove dirt and other contaminants from the gasket on the
sensor’s cover.
3. Squeeze the retainer clips on both sides of the optic housing
then lift the housing away from the printed circuit board.
4. Gently remove dirt and debris from around the optic plate and
inside the optic housing.
5. Replace the optic housing and sensor cover.
6. Connect power to the duct detector then perform a sensor
alarm test.
Fig. 48 —
Sensor Cleaning Diagram
INDICATORS
Normal State
The smoke detector operates in the normal state in the absence of
any trouble conditions and when its sensing chamber is free of
smoke. In the normal state, the Power LED on both the sensor and
the controller are on and all other LEDs are off.
Alarm State
The smoke detector enters the alarm state when the amount of
smoke particulate in the sensor’s sensing chamber exceeds the
alarm threshold value. (See Table 12.) Upon entering the alarm
state:
• The sensor’s Alarm LED and the controller’s Alarm LED
turn on.
• The contacts on the controller’s two auxiliary relays switch
positions.
• The contacts on the controller’s alarm initiation relay
close.
• The controller’s remote alarm LED output is activated
(turned on).
• The controller’s high impedance multiple fan shutdown
control line is pulled to ground Trouble state.
The SuperDuct duct smoke detector enters the trouble state under
the following conditions:
• A sensor’s cover is removed and 20 minutes pass before it
is properly secured.
• A sensor’s environmental compensation limit is reached
(100% dirty).
• A wiring fault between a sensor and the controller is detected.
NOTICE: OPERATIONAL TEST NOTICE
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 auto
-
matically go into the alarm state and activate all automatic
alarm responses.
NOTICE: OPERATIONAL TEST NOTICE
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.
NOTICE: OPERATIONAL TEST NOTICE
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 undergoing
maintenance then disable the relevant circuit to avoid generat
-
ing a false alarm.
1
12
14
13
19
15
2
20
3
RESET/TEST
Trouble
POWER
ALARM
SUPERVISION RELAY
CONTACTS [3]
5
4
1
3
2
SD-TRK4
2
1
TB3
18 VDC (-)
18 VDC (-)
AUXILIARY
EQUIPMENT
+
−
WIRE MUST BE
ADDED BY
INSTALLER
SMOKE DETECTOR
CONTROLLER
HVAC DUCT
SAMPLING
TUBE
RETAINER
CLIP
OPTIC
PLATE
OPTIC
HOUSING
SENSOR
HOUSING
AIRFLOW
Summary of Contents for WeatherMaker 50TCQ 17-24 Series
Page 35: ...35 Fig 53 RTU Open Overlay for Economizer Wiring ...
Page 36: ...36 Fig 54 VFD Overlay for W2770 Controller Wiring ...
Page 68: ...68 Fig B 50TCQD17 24 Control Wiring Diagram APPENDIX D WIRING DIAGRAMS ...
Page 69: ...69 Fig C 50TCQD17 24 Power Wiring Diagram 208 230 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 70: ...70 Fig D 50TCQD17 24 Power Wiring Diagram 460 3 60 575 3 60 Units APPENDIX D WIRING DIAGRAMS ...
Page 71: ...71 Fig E RTU Open Overlay APPENDIX D WIRING DIAGRAMS ...
Page 72: ...72 Fig F PremierLink Overlay APPENDIX D WIRING DIAGRAMS ...