6
Figure 3 - Detector with Swivel Mount
metre) below the ceiling where they may respond before being obscured by smoke. Consider
shortening time delay settings when smoke is expected to accumulate during a fire. If dense smoke is
likely to accumulate prior to flame (as in an electrical fire), supplement UV detectors with other
protection.
The detector should be mounted in a low vibration area be easy to access for cleaning purposes and should not
have glass or plexiglass windows between the device and the potential fire. Locate detectors to ensure an
unobstructed view of the area to be monitored. To minimize dirt accumulation around the vi surfaces, mount the
detectors so that the internal vi source tube is on top. The silver external reflector should be placed directly
over the vi source tube. Refer to Figures 4 and 5 for the detector and swivel mount dimensions. Refer to Figure
3 for a diagram of the assembled detector and swivel mount assembly.