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Table B-9: Trouble Sequence - Annunciation
3-LCD DisplayÚ Ú Ú Ú
Off Premise Module
(3-OPS)
3 circuit configuration
Off Premise Module
1 circuit configuration
Auxiliary Control
Relays
EST3 System Operations Manual
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EventØ Ø Ø Ø
Normal
First
Trouble
All
Trouble circuit
circuits
reverses polarity,
normal
module trouble
polarity
relay operates
Normal
Circuit opens,
polarity
(module trouble
relay operates)
Off
On as
programmed
firealarmresources.com
Operation sequence charts
First Alarm
Notes
w/Active Trouble
Alarm and trouble
circuits reverse
polarity
Circuit reverses
Alarm has priority
polarity (trouble
relay restores)
On as programmed
B.5
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