Spectrex 20/20MPI - Commercial IR3 Flame Detector - Manual (Page 43)

User and Maintenance ManualUser and Maintenance Manual 31
7 Operating Instructions
➣ In this chapter…
Power-Up page 31
Reset page 32
Functional Testing page 32
Safety Precautions page 33
This chapter describes how to power up and test the detector. It also
includes some very important safety checks that you should make before
operating the detector.
7.1 Power-Up
➣ To power up the detector:
1 Apply power and wait approximately 60 seconds for the automatic
self-test of the detector.
Note: Applying power initiates the following sequence:
 4 Hz LED flashes yellow and the BIT is executed
 If successful, the 1 Hz LED flashes green, and the FAULT relay
contacts close.
2 Wiring Inspection: If a short-circuit or line discontinuity exists,
indications appear on the control unit display panel. Review your wiring.
The detector is in FAULT state when the supply voltage drops under
16.5V. The detector status returns to NORMAL, when the supply voltage
is above 17.5V.
3 Detector Inspection: Visually inspect the viewing window of the
detector. It should be clean and clear. Verify the following:
 1 Hz LED flashes green
 ALARM relays is N.O
 FAULT relay is N.C
 0-20 mA Output is 4 mA
4 If any of the outputs or indications is different from the description in
step 3, see Troubleshooting on page 36.
The Flame Detector is now ready for Functional Testing.