System Sensor 2451, 2451TH specifications Testing

Testing

Before testing, notify the proper authorities that the smoke detector system is undergoing maintenance and will tem- porarily be out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms.

Detectors must be tested after installation and periodic maintenance. To test the 2451:

NOTE: Before testing the detector, check to ensure that the LEDs are blinking. If they are not, the detector has lost power (check the wiring) or it is defective (return for repair).

A. Test Magnet (System Sensor model no. M02-04-00)

1.Place the magnet against the cover opposite the test module slot to activate the test feature (see Figure 1).

2.The LEDs should latch on within 5 seconds indicating alarm and annunciating the panel.

B.Calibrated Test Card (System Sensor no. R59-18-00)

1.Remove the detector cover by placing a small bladed screwdriver in the side slot of the detector cover, twisting it slightly until the cover can be turned counterclockwise for removal.

2.Insert the NO ALARM end of the test card fully into the test slot (see Figure 2) then slide it counterclock- wise until it stops.

3.Wait for at least 20 seconds. The detector should NOT alarm.

4.Remove the test card by sliding it clockwise before removing, then insert the ALARM end.

5.The LEDs should latch on within 20 seconds indicat- ing alarm and annunciating the panel.

6.Put the cover back by gently rotating it clockwise until it locks in place.

C.Test Module (System Sensor no. MOD400R)

The MOD400R is used with your DMM or voltmeter to check the detector sensitivity as described in the MOD400R’s manual.

D.Aerosol Generator (Gemini 501)

Set the generator to represent 4% to 5%/Ft. obscuration as described in the Gemini 501 Manual. Using the bowl shaped applicator, apply aerosol until the unit alarms.

E. Direct Heat Test (2451TH only)

To test the bi-metallic thermal collector, aim a heat source, such as a low powered heat gun or blow dryer, across the detector. Hold the heat source about 12 inches (30 cm) from the detector to avoid damaging the plastic.

When the temperature rises to greater than 135°F (57°C), the detector should latch into the alarm. The bi-metallic collector automatically resets after the test.

Notify the proper authorities that the detection system is back on line.

Detectors that fail these tests should be cleaned as described under MAINTENANCE and retested. If the detectors still fail these tests they should be returned for repair.

Figure 2:

REMOVABLE HEAD COVER

TEST SLOT

CLEANABLE SCREEN

P/N RS24 (W/O THERMAL)

HEAD COVER

REMOVAL SLOT

VANED CHAMBER

C0722-00

D400-02-01 3 I56-277-10R