Refer to Figure 14 for this procedure.
1. Verify the sensitivity setting of the detector in % obscura-
tion. See the Sensitivity Selection section of this manual
for sensitivity determination if sensitivity is unknown.
2. Place the blocking material over the reflector, lining it
up with the graduated marks that are 10 less than the
detector’s setting in percent obscuration. The detector
should not alarm or fault. Keep the material in place for
a minimum of 1 minute.
3. Place the blocking material over the reflector lining it
up with the graduated marks that are 10 more than the
detectors setting in percent obscuration. The detector
should enter alarm within 1 minute.
Figure 14. Reflector Test Card Procedure
LINE UP EDGE OF
TEST CARD WITH
APPROPRIATE
OBSCURATION LEVEL
MOVE TEST CARD
TO DESIRED AMOUNT
OF OBSCURATION
C0267-00
4. The detector can be reset with the reset switch on the
detector unit, remote reset, or momentarily interrupting
power.
5. Notify the proper authorities that the system is back on
line.
If the detector fails this test several steps should be taken
to determine if the detector is faulty or simply needs to be
re-adjusted before returning the unit. These steps include:
1. Verify all wiring connections and appropriate power is
applied to the detector.
2. Verify that the optical line of sight is free from obstruc-
tions and reflective objects.
3. Apply the maintenance procedure in this manual.
Repeat the test procedure. If the detector still fails the
test procedure proceed with step 4.
4. Repeat the alignment procedure in this manual. If the
alignment procedure is successful repeat the test pro-
cedure. If the detector still fails the test it should be
returned.
B. Test Switch
The detector can be tested using the local test switch on
the transmitter/receiver unit or remotely using the remote
test station.
The remote test station, RTS451 or RTS451KEY, can be
used with the BEAM1224/BEAM1224S beam smoke detec-
tor. Follow instructions included with the test station for
proper use. See Figure 8 (Remote Test Station) for wiring
diagram.
The BEAM1224S is equipped with an integral sensitivity
test feature that consists of a calibrated test filter attached
to a servo motor inside the detector optics. When a test is
initiated using the remote test station or local test switch
the test filter is moved in the pathway of the light beam.
The on-board microprocessor then determines if the proper
level of signal reduction is received at the receiver. If the
proper level of signal reduction is received the detector will
enter alarm. If the proper level of signal reduction was not
achieved, indicating that the sensitivity of the detector is out
of tolerance, the detector will enter the trouble condition.
Always perform a complete reflector blockage test as in step
4 of the Installation/Alignment procedure to insure that the
pathway between the detector and reflector is clear.
Note: For the BEAM1224 this test does not satisfy the
requirements of NFPA72 for periodic maintenance and
sensitivity verification of beam type detectors. For the
BEAM1224S this test in conjunction with the complete
reflector blockage test (see step 4 of the Installation/
Alignment procedure in this manual) does satisfy the
requirements of NFPA72 for periodic maintenance and
sensitivity verification of beam type detectors.
D400-73-00 12 I56-2294-03R
