Sd-Trm4 Remote Alarm Test Procedure; Remote Test/Reset Station Dirty Sensor Test; Dirty Sensor Test Using An Sd-Trm4; Detector Cleaning - Carrier 50GCQ Series Service And Maintenance Instructions

SD-TRM4 Remote Alarm Test Procedure

1. Hold the test magnet to the target area for 7 seconds.
2. Verify that the test/reset station's Alarm LED turns on.
3. Reset the sensor by holding the test magnet to the target
area for 2 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. 47 and configured to
operate the controller's supervision relay. For more information,
see "Dirty Sensor Test" on page 27.
12
1
TB3
1
2
3
14
Supervision
Relay
Contacts [3]
13
19
Wire must be
added by
15
installer
2
20
Fig. 47 — 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 7 seconds, the detector will automati-
cally 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
7 seconds will put the detector into the alarm state and activate
all automatic alarm responses.

Dirty Sensor Test Using an SD-TRM4

1. Hold the test magnet where indicated on the side of the
sensor housing for 2 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 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. 48.
Sampling
Tube
Airflow
Fig. 48 — Sensor Cleaning Diagram
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.
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.
28
HVAC Duct
Sensor
Housing
Optic
Plate
Retainer
Clip
Optic
Housing