SST F120 - Routine Operation; Led Indicator; Normal Operation; Alarm and Delayed Alarm Mode

120-38 January, 2016
Model F120 UV/IR Flame Detector
ROUTINE OPERATION
The Model F120 Triple-Mode UV/IR Flame Detector is designed to monitor for the presence
of ame(s) 24 hours a day, 7 days a week with no regular intervention required.
LED Indicator
Located inside the ame detector’s viewing window are 3 colored LED indicators:
• POWER - Green LED
• Alarm / Delayed Alarm - Red LED
• FAULT - Yellow LED
Normal Operation
The POWER LED indicator illuminates a green light indicating normal operation of the ame
detector.
Under normal operation, all relay contacts are in the normal, non-alarm and non-fault condition,
and the detector will transmit a 4.0 mA signal to any connected external equipment.
Alarm and Delayed Alarm Mode
The red LED indicator is activated when the detector reports an Alarm condition. The red
LED indicator will remain on when the detector has conrmed the re activating the Delayed
Alarm and contact relays.
When a re or ame has been detected, the detector will transmit a 20 mA signal and the
Delayed Alarm contacts are activated.
The red LED indicator turns off when the detector no longer sees a re and resets the detector
to normal operation.
If the Delayed Alarm is set to LATCHING, the red LED will remain on and the contact relays
will remain engaged until the detector is manually reset.
!
IMPORTANT: If the red LED alarm indicator does not turn off when the re has
been extinguished or is no longer present, the detector has been congured with
a latching Delayed Alarm. The detector has to be manually reset to return to
normal operation.