Spectrex 20/20U (UB) - UV Flame Detector - Manual (Page 40)

Spectrex Inc. - SharpEye™ UV Flame Detector Manual – TM 20/20UB Rev. E, August 2004
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7.4 Functional Testing
Following is a testing procedure for proper wiring and functioning of the detector.
Important Note!
If SW1 switches 7 or 6 are in their “ON” position the Alarm and Accessory Relays
will be activated during a MANUAL BIT, therefore, automatic extinguishing
systems or any external devices that may be activated during BIT must be
disconnected.
1. Verify that the detector is operated properly.
2. Initiate manual BIT. After a few seconds the following occurs:
• Alarm Relay will be activated for 3 seconds (Only if SW1-6 is ON).
• Accessory Relay will be activated for 3 seconds (Only if SW1-7 is ON).
• The LED should blink at 0.5Hz rate.
• Fault Relay will stay active during the test.
This completes the installation procedure. The detector and system are now
ready for operation.
7.5 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 and SW1 switches 7 or 6 are in their
“ON” position the Alarm and Accessory Relays 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 40 seconds for turning of the
detector to normal state. The yellow LED should blink at 0.5Hz rate. If the
detector is ON, skip this step.
2 Aim the Spectrex Fire Simulator Model 20/20-311 to the target point of the
detector (see Fig. 14), in a way that the radiation emitted by it is facing
directly towards the detector (See Appendix D.)
3 Press the operation button once. After few seconds the red LED should be
on and remain so for 4-11 seconds. After this period the red LED should be
off and the yellow LED blink continually at 0.5Hz rate. The 4-20mA output
should turn to 20mA for 4-11 seconds and then to return to 4mA. The Alarm
Relay should also turn on to this period. The Accessory Relay should
respond in parallel to the Alarm Relay if SW1-4 is OFF.