Chapter 6: Maintenance
54 Stratos EX Hazardous Area Aspirating Smoke Detection System Installation Manual
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.
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