Conventional Products—6424 Projected Beam Type Smoke Detector 25
Testing and Maintenance
Procedures
Before testing, notify the proper authorities that the smoke detector system
is undergoing maintenance and will be temporarily out of service. Disable
the zone or system undergoing maintenance to prevent unwanted alarms.
After a detector is set into alarm by one of the following test methods, and
the alarm activating device is removed from the detector, the system
should be reset at the control panel before testing any additional detectors.
After all testing is complete, notify the proper authorities the system is
back in service.
Detectors must be tested after installation and following periodic
maintenance.
Before testing the detector, look 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).
Calibrated Test Filter
1.
Test the detector at the receiver.
2.
Use the proper side of the test filter depending on the sensitivity
setting (55 or 30) of the detector.
3.
Place the NO ALARM portion of the test filter over the receiver lens.
The green LED should continue to pulse and the detector should not
alarm after 15 seconds.
4.
Place the ALARM portion of the test filter over the lens. The detector
should alarm within 15 seconds.
5.
Reset the detector with the local reset, remote reset, or by
momentarily interrupting the power.
Detectors that fail to alarm should be returned for repair. Units that alarm
during the non-alarm test (Step 3) should be cleaned and tested again
before being returned. Follow the maintenance instructions for cleaning.
Sensitivity
Testing
Sensitivity
Testing of the
6424
