SharpEye 20/20MPI, User And Maintenance Manual

Page: 45 / 64

Power Up 45
7 Operating Instructions
➣
In this chapter…
Power Up page 45
Reset page 46
Functional Testing page 46
Safety Precautions page 47
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:
 4Hz LED flashes yellow and the BIT is executed
 If successful, the 1Hz LED flashes green, and the FAULT relay
contacts close.
2
Wiring Inspection : If a short-circuit or line discontinuity exists, fault
indications appear on the control unit display panel. Check 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:
 1Hz LED flashes green
 Alarm relay is N.O.
 Fault relay is N.C.
 0–20mA output is 4mA
4
If any of the outputs or indications is different from the description in
step
‎
3, see Troubleshooting on page 50.
The flame detector is now ready for functional testing.
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