Spectrex 20/20U (UB) - UV Flame Detector - Manual (Page 39)

Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004
31
7. Operating Instructions
7.1 Scope
The following instructions are designed to obtain optimal performance from the
detector over its life-cycle.
7.2 Power-Up
1 Apply power and wait up to 40 seconds for the automatic self-test of the
detector.
Note
:
Applying power initiates the following sequence:
• The yellow LED blink (2 Hz)
• BIT is executed. If successful then:
• The yellow LED blink (0.5 Hz)
• Fault Relay contacts close
2 Wiring inspection. If a short-circuit or line discontinuity exists, indications will
appear on the control unit display panel. Review your wiring.
3 The detector goes into its FAULT state when supply voltage drops under
16.5V. The detector status goes back to NORMAL when the supply voltage
is above 17.5V.
4 Detector inspection: Visually inspect the viewing window of the detector. It
should be clean and clear. The yellow LED should blink (0.5Hz) and the
Alarm and Accessory Relays should be off and the Fault Relay should be on.
5 If any of the outputs or indications is different from the description in step 3,
see section 8.6 for troubleshooting.
The Flame Detector is now ready for Functional Testing.
7.3 Reset
To reset a detector when in Alarm Latch state, turn OFF power supply for 10
sec., or initiate a manual BIT.