Troubleshooting - UTC Fire and Security AirSense Stratos EX Installation Manual

Chapter 5: Troubleshooting

Troubleshooting

Troubleshooting the EX detector
This chapter provides some possible solutions if a problem should occur with
your EX detector. If the problem is not addressed in this chapter or, if after
performing the suggested actions, the problem persists, contact Technical
Support.
Consult either the Remote Configuration Software User Manual or
Note:
SenseNET Software User Manual for more information about the solutions or
corrective actions discussed here.
Problem Solution or corrective action
Nuisance alarms Check that the ClassiFire alarm factor setting is appropriate for the
occur too often normal working environment of the protected area.
Check that the detector is not in Demonstration mode. This can be
ascertained by viewing the event log and checking that the entry Demo
mode has a higher log entry number than the most recent FastLearn
start and FastLearn end entries. Remember that the log entries are in
reverse order, with the most recent entries appearing first. If the log
shows that Demonstration mode was invoked during the last FastLearn
period, start a new FastLearn and allow it to complete its 24-hour
cycle.
From the event log, check that 24 hours have elapsed since the last
FastLearn end entry.
Check that day-night switchover times are appropriately set to reflect
active and non-active periods.
Elevated smoke Check that detector is not Isolated or in FastLearn (if Isolated, the Fault
levels do not light will be illuminated)
generate alarms
Check that the detector sampling points are in the smoke stream
Check that the correct ClassiFire alarm setting has been set.
Check that the detector has either had a 24 hour learning period or that
it has been placed in Demonstration Mode
Low mean output Check that the dust separator cartridge does not require changing
(refer to "Maintenance" on page 50 for details) and that the air plenum
chamber is clean. The chamber may become clogged when, for
example, heavy building activity has occurred near the sampling pipes. If
so, the chamber may require factory service. The detector is not designed
to handle large quantities of coarse debris and dust.
Detector sensitivity There are many reasons why particle densities may vary, and the
varies over time ClassiFire system is designed to automatically compensate for this in
order to reduce the likelihood of nuisance alarms due to normal
variations in background smoke density. Within limits set by the
ClassiFire alarm factor, this is a normal part of the detector's operation.
46 Stratos EX Hazardous Area Aspirating Smoke Detection System Installation Manual