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Page: 30
3
OPERATING THE DETECTOR
➣
In this chapter…
Powering Up
page 30
Safety Precautions
page 31
Testing Procedures
page 32
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.
3.1 POWERING
UP
This section describes how to power up the detector. Follow these instructions carefully
to obtain optimal performance from the detector over its life cycle:
➣
To power up the detector:
1
Turn on the power.
2
Wait approximately 60 seconds for the detector to finish the start-up procedure.
Applying power initiates the following sequence of events:
•
The yellow LED flashes at 4 Hz.
•
BIT is executed.
If successful, the green LED flashes at 1 Hz and the FAULT relay contacts close,
mA output is 4 mA.
3
Enter to Normal mode.
Note
: The majority of detectors are used in the default non-latching alarm mode. Only
perform a Reset when the Latching alarm option has been programmed.
➣
To reset a detector when in it is in a LATCHED ALARM state:
•
Do one of the following:
•
Disconnect power (Terminal Number 1 or Terminal Number 2).
or
•
Initiate a Manual BIT.