Testing Detectors With Detector Exchanger And Tester; Testing Detectors Without Detector Exchanger And Tester - Siemens FDOOT221 Technical Manual

7 Maintenance / Repair
Testing detectors
7.3.1
7.3.2
112
Building Technologies
Fire Safety

Testing detectors with detector exchanger and tester

Testing detectors on a collective or addressed (FDnet, AnalogPLUS, SIGMALOOP,
MS8) line is easiest with the detector exchanger and tester FDUD292 or the
intelligent detector tester FDUD293. With these devices, the detectors can also be
tested in normal operating mode without any problems.
A detector can be put into test mode with the detector exchanger and tester
FDUD292 or the intelligent detector tester FDUD293. Detectors on a collective line
or on an MS8 line automatically revert to normal operating mode after 60 seconds
in this case.
You will find more information in documents 007227 and 009718.

Testing detectors without detector exchanger and tester

The fire detectors are highly resistant to deceptive phenomena. Optical fire
detectors thus recognize the immediate occurrence of smoke, as typically occurs
when testing with test gas, as a deceptive phenomenon and do 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 hot air, the detector must be switched to
test mode. Testing with test gas or hot air differs with addressed and collective
detector lines.
Addressed detector lines (FDnet, SIGMALOOP)
On addressed detector lines, the detector or detector zone can be switched to
'Test' mode on the control panel. Testing with test gas or hot air is then possible
without problems.
Addressed detector lines (MS8, AnalogPLUS)
The response time of a detector on an MS8/AnalogPLUS line is not reduced when
you switch to 'Test' mode on the control panel. Unlike on a collective detector line,
the detector must not be removed from the detector line for a short time and re-
inserted. Testing without a detector exchanger and tester is therefore difficult,
especially with smoke detectors.
In AnalogPLUS mode, you can use the detector exchanger and tester to select
parameter set 12, which has a short response time.
Collective detector lines
Detectors on a collective line are automatically switched to test mode for 3 minutes
during startup and reset. A detector that has been newly inserted (or that has been
briefly removed from the detector line and re-inserted) is therefore automatically in
test mode during the first 3 minutes.
To trigger a detector with test gas, normally 2...4 gas discharges at intervals of
approx. 2 seconds are required. When the detector is in test mode, activation
takes place after approximately 10 seconds.
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01.07.2012