Spectrex 20/20CTIN-CTIP Flame Detector User Manual
Page 42
Spectrex Inc. - SharpEye
TM
CCTV Model Flame Detector Manual – TM 788100, Rev. A January 2005
34
7.4.1 Manual BIT Test
Important Note!
If the function setup “Alarm BIT” is in YES, then the Alarm and 4-20mA Output 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 operating properly.
2 Initiate manual BIT. After a few seconds the following occurs:
• Alarm Relay will be activated and the 4-20mA output turns to 15mA for
3 seconds (only if “Alarm BIT” at YES).
• The CCTV will be activated and the 4-20mA output turns to 10mA for 3
seconds (only if “Accessory BIT” at YES).
• The 2 LEDs should be ON.
• Fault Relay will stay active during the test.
7.4.2 Testing with fire simulator
This test simulates 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 and 4-20mA will be
activated during the simulation. Therefore, automatic extinguishing systems or
any external devices, which may be activated during this process, must be
disconnected.
1 Apply power to the system and wait up to 60 seconds for turning of the
detector to normal state. Power led turns on. If the detector is on, skip this
step.
2
Aim the Spectrex Fire Simulator Model 20/20-310 at the target point of the
detector (see Fig. 22), in a way that the radiation emitted by it is facing
directly towards the detector. (See appendix E)
3 Press the operation button once. After a few seconds the Alarm LED should
be ON for a few seconds. The 4-20mA output should turn to 15mA for a few
seconds and then return to 5mA. The Alarm Relay should also turn on during
this period. The CCTV will operate in parallel to the Alarm Relay if “Accessory
BIT” at YES.
This completes the installation procedure. The detector and system are now ready
for operation.