6 APPENDIX
FIREFINDER-XLS INSTALLATION, OPERATION AND MAINTENANCE MANUAL | APPENDIX B
Testing ASD Devices Since ASD is transmitted to the detector to adjust the detection algorithm to reduce
false alarms, it is necessary to bypass ASD when smoke testing devices for which
ASD has been enabled. The Bypass ASD menu option, located in the Control Menu,
has been supplied for this purpose. When ASD devices are to be smoke tested, ASD
must first be bypassed (disabled) on the DLC or MLC module which contains the
devices to be tested. This disables the application specific detection algorithm on all
of the detectors on that DLC or MLC so the detector will alarm using the standard
test gas method. An “ASD Disabled for Test” trouble will be issued when ASD is
bypassed (disabled) on one or more detectors. If ASD is not bypassed (disabled) prior
to smoking the device, the tester may find it extremely difficult to alarm the detector
since the algorithms are designed not to be fooled by a deceptive phenomenon such
as test gas.
Once ASD has been bypassed using the test menu, the tester should wait 3 minutes
before attempting to test the ASD devices. This will ensure that the ASD algorithm
has been bypassed at each device. Once ASD has been bypassed (disabled) on
detectors, it will remain bypassed (disabled) through a Panel Reset. To restore the
ASD algorithm, the Enable ASD option must be selected on the Control panel at the
DLC or MLC. When ASD has been reenabled on all devices, an OUT will be issued for
the ASD trouble.
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