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BEAM1224 Datasheet(PDF) 8 Page - Systemsensor advanced ideas. |
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BEAM1224 Datasheet(HTML) 8 Page - Systemsensor advanced ideas. |
8 / 13 page rarily out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms. Detectors must be tested after installation and following periodic maintenance. The sensitivity of the BEAM1224/BEAM1224S may be tested as follows: NOTE: Before testing the detector, check for the presence of the flashing green LED at the receiver, making sure not to disturb or block the beam. If it does not flash and the detector is not in trouble or alarm, power has been lost to the detector (check the wiring). A. Calibrated Test Filter The sensitivity of the detector can be tested using an opaque material to cover the reflector by an amount indicated by the graduated scale on the reflector. (Due to the high optical efficiency of the reflector the selection of the opaque material used to block the reflector is not critical. Acceptable materials in- clude, but aren’t limited to, this manual or the cardboard packaging inserts.) Refer to Figure 14 for this procedure. 1. Verify the sensitivity setting of the detector in % obscuration. 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 gradu- ated marks that are 10 less than the detector’s setting in percent obscura- tion. 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 gradu- ated marks that are 10 more than the detectors setting in percent obscu- ration. The detector should enter alarm within 1 minute. 4. The detector can be reset with the reset switch on the detector unit, re- mote reset, or momentarily interrupting power. 5. Notify the proper authorities that the system is back on line. 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 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 obstructions and reflec- tive objects. 3. Apply the maintenance procedure in this manual. Repeat the test proce- dure. If the detector still fails the test procedure proceed with step 4. 4. Repeat the alignment procedure in this manual. If the alignment proce- dure is successful repeat the test procedure. If the detector still fails the test it should be returned. D400-73-00 8 I56-2294-004R B. Test Switch The detector can be tested using the local test switch on the transmitter/re- ceiver unit or remotely using the remote test station. The remote test station, RTS451 or RTS451KEY, can be used with the BEAM1224/BEAM1224S beam smoke detector. 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 con- sists 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 micro- processor 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, indi- cating 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 Instal- lation/Alignment procedure to ensure 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 block- age test (see step 4 of the Installation/Alignment procedure in this manual) does satisfy the requirements of NFPA72 for periodic maintenance and sensi- tivity verification of beam type detectors. 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 for repair. 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 obstructions and reflec- tive objects. 3. Apply the maintenance procedure in this manual. Repeat the test proce- dure. If the detector still fails the test procedure proceed with step 4. 4. Repeat the alignment procedure in this manual. If the alignment proce- dure is successful repeat the test procedure. If the detector still fails the test it should be returned. MAINTENANCE NOTE: Before cleaning the detector, notify the proper authorities that the smoke detector system is undergoing maintenance, and therefore the system will be temporarily out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms. 1. Carefully clean the outer housing lens face. A damp soft cloth with a mild soap may be used. Avoid products with solvents or ammonia. 2. Carefully clean the reflector. A damp soft cloth with a mild soap may be used. Avoid products with solvents or ammonia. 3. Notify 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 section of this manual for paint types. NOTE: Never paint the flat lens surface of the outer housing. SPECIAL NOTE REgARDINg SMOkE DETECTOR gUARDS Smoke detectors are not to be used with detector guards unless the combina- tion has been evaluated and found suitable for that purpose. |
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