Operation
P/N 06-236716-001 4-1 August 2007
CHAPTER 4
OPERATION
4-1 INTRODUCTION
This chapter explains how to read the control unit display, interpret the LEDs, and how to reset
the unit. The following are the operational modes of the control unit:
•Normal Mode
•Alarm Signal
•Supervisory Signal
• Trouble Signal State
4-1.1 Normal Mode
In the normal mode, the control unit continuously monitors all inputs and outputs for any
change of state. In the normal mode the Green AC ON LED is the only illuminated LED. The
buzzer and NACs are silent, The Programmable Relays are de-energized, and the Trouble relay
is energized.
4-1.2 Alarm Signal State
In the Alarm state, the control unit has detected one or more active inputs on its input circuits.
The states of Alarm are:
1. First Alarm — caused when input is received from:
•DET 1, or
•DET 2, or
• DET 3 (Detector or Waterflow), or
• Manual Release
2. Pre-Release — caused when input is received from:
• DET 1 in Single-Zone release mode, or
• DET 2 in Single-Zone release mode, or
• DET 1 and DET 2 in Cross-Zone Mode, or
• DET 1 and DET 3 (Waterflow) in Cross-Zone mode, or
• DET 2 and DET 3 (Waterflow) in Cross-Zone mode, or
• DET 1 and Supv 1 in Cross-Zone mode, or
• DET 2 and Supv 1 in Cross-Zone mode, or
• Manual Release
3. Releasing — caused when the pre-release countdown timer has counted down to zero. In
this state, the control unit is actively in the process of activating its Agent Release
Circuit(s).
4. Post-Release — condition when the control unit has released Agent.
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