UTC Fire and Security AirSense Stratos EX Installation Manual page 60

Chapter 6: Maintenance
If any problems were found during the diagnostic tests, the nature of the fault will
be indicated in the "Status" column.
Table 4: Diagnostics screen
Function Description
Scan Reads in the status of all connected detectors.
Read Opens a display of the detector output and flow rate, which updates in real
time.
Relays Displays a screen allowing the function of the volt-free Fire and Fault LEDs
to be tested with the aid of a continuity meter or other tester. The Fire relay
contacts are open in normal operation and will close on test. The Fault
relay contacts operate on a Fail-safe basis and are held closed in normal
operation. They will therefore open on test.
Save As Saves the summary list of scanned detectors and their status as a text
(.txt) file
Print... Prints the summary list to a connected printer.
Flame arrestors
In-line deflagration flame arrestors should be inspected on a regular basis to
ensure that no build up of solids or liquids occurs in the element as this will
adversely affect the performance. And as a result this will obstruct the airflow in
and out of the aspiration detector and decrease its sensitivity to detect smoke.
Depending on the flow monitoring settings, this might cause a low airflow fault.
The flame arrestors may not be removed from the aspiration detector. If cleaning
is required, the following steps should be followed:
To clean the flame arrestors:
1. Disconnect the power from the unit.
54 Stratos EX Hazardous Area Aspirating Smoke Detection System Installation Manual