Sd-Trk4 Remote Alarm Test Procedure; Remote Test/Reset Station Dirty Sensor Test; Dirty Sensor Test Using An Sd-Trk4; Detector Cleaning - Carrier 48JCH 04-06 Series Service And Maintenance Instructions

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. 38 and configured to
operate the controller's supervision relay. For more information,
see "Dirty Sensor Test" on page 21.
12
1
TB3
1
2
3
14
Supervision
Relay
Contacts [3]
13
19
Wire must be
added by
15
installer
2
20
Fig. 38 — Remote Test/Reset Station Connections
IMPORTANT: Failure to follow this ALERT 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 ALERT 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.
Smoke Detector
Controller
−
Auxiliary
Equipment
+
SD-TRM4
Trouble
5
Power
18 VDC (-)
4
Alarm
1
Reset/Test
3
18 VDC (-)
2

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: OPERATIONAL TEST ALERT
Failure to follow this ALERT 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 generating a false alarm.
1. Disconnect power from the duct detector then remove the
sensor's cover (see Fig. 39).
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.
Sampling
Tube
Airflow
Fig. 39 — Sensor Cleaning Diagram
3. Squeeze the retainer clips on both sides of the optic housing.
4. Lift the housing away from the printed circuit board.
5. Gently remove dirt and debris from around the optic plate
and inside the optic housing.
6. Replace the optic housing and sensor cover.
7. Connect power to the duct detector then perform a sensor
alarm test.

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 4). 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 con-
trol line is pulled to ground Trouble state.
22
HVAC Duct
Sensor
Housing
Optic
Plate
Retainer
Clip
Optic
Housing