Spectrex 20/20F - Fast UV/IR Flame Detector - Manual (Page 28)

Spectrex Inc. - SharpEye TM UV/IR (F) Flame Detector Manual – TM756100 Rev A, July 2005
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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 up to 10 seconds; verify that the FAULT Relay closed
contact (short between Terminal 6 and 7)
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 If the outputs are different from the description in step 3, see section 8.6 for
troubleshooting.
The Flame Detector is now ready for Functional Testing.
7.3 Testing With Fire Simulator (See Appendix D)
This test is producing to simulate an exposure of the detector to a real fire
condition. The detector is exposed to the radiation in the specified detection
level. As a result, the detector must generate a Fire Alarm signal
Important Note!
If the detector is exposed to a fire simulator the Alarm Relay will be activated
during the simulation. Therefore, automatic extinguishing systems or any external
devices that may be activated during this process must be disconnected.
1 Apply power to the system and wait up to 10 seconds for turning of the
detector to normal state. The FAULT Relay contact should be closed.
2 Aim the Spectrex Fire Simulator Model 20/20-311 at the target point of the
detector (see Fig. 11), in a way that the radiation emitted by it is facing
directly towards the detector (See Appendix D.)
3 Press the operation button once. Verify that
• The LED should be on and remain so for a few seconds.
• Terminal 3 should apply 4- 4.7 voltage for a few seconds.
• The Alarm Relay will close contacts for a few seconds.
After this period of time
• The LED should return to off
• The output at Terminal 3 should return to 0
• The Alarm Relay should open contacts (4, 5)