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Power Fault
If the detector LED indicator is OFF or flashing then there may be a power supply fault, as shown
below:
Figure 16: Power Supply Diagnostic Chart
When investigating power supply faults, it is important to check that all voltages are within the
detectors operating range (18V to 32V) under full load conditions as the voltages measured under
no load conditions can be misleading.
Live Video Images
Poor quality video is often a result of earth differentials, induced noise and/or inadequate screening.
These issues require attention if video quality is a priority. Poor quality video does not affect the
functionality of the VSF301 detector. Video can be verified from the detector using a portable
viewing unit connected to the video output terminals. If there is video directly from the VSF301 then
the control system must be examined for failures.
This document is strictly private and confidential, reproduction without Viking Corporation approval is prohibited. © 2021 The Viking Group Inc.
VSF301 Flame Detector
Safety and Technical Manual
Form No. F_020621
Rev: 2
29
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