Spectrex 20/20R - Single IR Flame Detector - Manual (Page 41)

Spectrex Inc. - SharpEye TM Single IR Flame Detector Manual – TM 20/20R, Rev. A January2005
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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 approximately 60 seconds for the automatic self-test of
the detector.
Note
: Applying power initiates the following sequence:
• POWER LED flashes
• BIT is executed, if successful then:
• POWER LED turns ON continuous
• 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 inspects the viewing window of the detector. It
should be clean and clear. The POWER LED should be ON and the ALARM
LED should be OFF. The ALARM and ACCESSORY relays should be OFF
and the FAULT relay should be ON. The 4-20mA Output should be 5mA.
5 If any of the outputs or indications is different from the description in step 4,
see paragraph 8.6.1 for troubleshooting.
The Flame Detector is now ready for Functional Testing.
7.3 Reset
If optional latching alarm has been selected, RESET of a detector when in its
ALARM state, is achieved by disconnecting power (terminal No. 1 or terminal No.
2), or initiation of a manual BIT.
7.4 Functional testing
Following is a test procedure for proper functioning of the detector. The detector
can be tested using the Manual Built-in-Test or the Spectrex IR Fire Simulator -
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