Specifications

Changes on the Detection Loop
Installation Handbook, Autroprime Interactive Fire Detection System, 116-P-APRIME-INSTALL/DGB Rev. E, 2011-08-16,
Autronica Fire and Security AS
Page 64
14. Changes on the Detection Loop
14.1 Typical Scenarios
This chapter provides information on how changes on the detection
loop affect the system during normal operation.
The table below gives an overview of typical scenarios for various
examples, including the actions to be carried out and the panel
indication (visual/audible).
Note that some fault messages may not appear if a change is done
rapidly (for example, a unit is removed and another unit is inserted
rapidly). However, the procedures will be the same, regardless of how
quick the changes are done.
Before a point is to be added or removed from the loop (for example,
a new detector base for a detector is added or an existing is
removed), the detection loop in question has to be disabled after
entering service mode. When the change has been done, the
detection loop has to be enabled.
14.2 Remove a unit and Insert the same unit
Scenario during normal operation /
actions to be carried out
Panel indication (visual/audible)
For example, remove an optical smoke detector BH-300 and replace the same one.
1 Remove the detector from its base. Observe fault warnings “Open Circuit in negative wire” and
“Loop Unit not responding”
2 Acknowledge all faults. Buzzer off, indicator to steady
3 Insert the same detector. No change
4 Operate reset. Panel to quiescent condition.