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Maintenance / Repair
Testing the point detector
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Building Technologies
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Fire Safety
2016-03-03
7.3.4 Testing detectors with detector exchanger and tester
The easiest way to test the detectors is using detector exchanger and tester
FDUD292 and intelligent detector tester FDUD293. With these devices, the
detectors can also be tested in operating mode without any problems.
A detector can be switched to test mode with the detector exchanger and tester
FDUD292 for the fire detection functionality.
You will find more information in documents 007227 and 009718.
Selecting the test mode on the detector exchanger and tester does not deactivate
evaluation of the Technical CO Alarm!
7.3.5 Testing detectors without detector exchanger and tester
The fire detectors are highly resistant to deceptive phenomena. This means that
optical fire detectors, for example, will recognize the immediate occurrence of
smoke (such as that which occurs during testing with test gas) as a deceptive
phenomenon and will not trigger an alarm. This is desirable in normal operation;
however, it does make testing with test gas problematical.
To enable detector testing with test gas or with a hot air fan, the detector must be
switched to test mode.
The detector or detector zones can be switched to test mode on the control panel.
Testing with test gas is then possible without problems.
To trigger a detector using test gas, normally 2…4 gas discharges at intervals of
approx. 2 seconds are required. When the detector is working in test mode,
activation takes place after approximately 10 seconds.