Maintenance - System Sensor BEAM1224A Installation And Maintenance Instructions Manual

3. A pply the maintenance procedure in this manual. Repeat the
test procedure. If the detector still fails the test procedure
proceed with step 4.
4. R epeat the alignment procedure in this manual. If the align-
ment procedure is successful repeat the test procedure. 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 RTS451KEYA, can be used
with the BEAM1224A/BEAM1224SA beam smoke detector.
Follow instructions included with the test station for proper use.
See Figure 8 (Remote Test Station) for wiring diagram.
The BEAM1224SA is equipped with an integral sensitivity test
feature that consists of a calibrated test filter attached to a servo
motor inside the detector optics. W hen a test is initiated using the
remote test station or local test switch the test filter is moved in
the p athway o f t he l ight b eam. T he o n-board m icroprocessor t hen
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 BEAM1224A this test does not satisfy the
requirements of NFPA72 and/or ULC for periodic maintenance
and sensitivity verification of beam type detectors. For the
BEAM1224SA this test in conjunction with the complete reflec-
tor blockage test (see step 4 of the Installation/Alignment pro-
cedure in this manual) does satisfy the requirements of NFPA72
and/or ULC for periodic maintenance and sensitivity verification
of beam type detectors.
If t he d etector f ails t his t est s everal s teps s hould b e t aken t o d eter-
mine if the detector is faulty or simply needs to be re-adjusted
before returning the unit for repair. These steps include:
D400-73-00
1. V erify all wiring connections and appropriate power is
applied to the detector.
2. V erify that the optical line of sight is free from obstruc-
tions and reflective objects.
3. A pply the maintenance procedure in this manual.
Repeat the test procedure. If the detector still fails the
test procedure proceed with step 4.
4. R epeat 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.

Maintenance

NOTE: B efore cleaning the detector, notify the proper
authorities that the smoke detector system is
undergoing maintenance, and therefore the sys-
tem will be temporarily out of service. Disable the
zone or system undergoing maintenance to prevent
unwanted alarms.
1. C arefully clean the outer housing lens face. A damp soft
cloth with a mild soap may be used. Avoid products
with solvents or ammonia.
2. C arefully clean the reflector. A damp soft cloth with a
mild soap may be used. Avoid products with solvents or
ammonia.
3. N otify the proper authorities that the system is back on
line.
Painting
The outer aesthetic ring may be painted using a spray or
brush type paint of appropriate type. See specification sec-
tion of this manual for paint types.
Note: never paint the flat lens surface of the outer housing.
12 I56-2541-00R