Smoke Alarm User Manual

Installation, Operation and Maintenance Manual
Issue 1 Page 3-1
February 2001
3 CONTROLS AND INDICATORS
3.1 Status Indicator
A three-colour light emitting diode (LED) mounted in the fascia plate of the Detector provides a visual
indication of the current status of the system. A similar LED is also provided on the Display Module. The
LED changes colour to indicate the system status. System conditions that are indicated by this LED, are
as follows:
Continuous Green Normal
Flashing Green Auto Setup
Continuous Yellow Fault/Isolate
Flashing Red Pre-Alarm
Continuous Red Alarm
3.2 Termination Board Indicator
The termination board provides a Power On LED indicator. This is located in the top right corner of the
board and displays, when lit, that power is present.
3.3 Display Module
The Display Module is an optional item, which provides a back-lit mono Liquid Crystal Display (LCD).
The main function is to provide a visual indication of the system status, these being smoke level, airflow,
alarm and trouble conditions of the Detector. The back-light of the Display Module operates upon
activation of any condition or by use of the control keys. If there are no further activations or operation of
any control key for one minute, the back-light will return to its normal state.
The Display Module allows an operator to request certain functions to be performed by selecting options
from a displayed menu list. The functions are as follows:
Silence Cancels the internal audible sounder.
Reset Reset the Detector.
Status Allows viewing of the current status of the unit.
Smoke Allows viewing of Alarm sensitivity settings, Pre-Alarm settings and current
smoke levels.
Airflow Allows viewing of the airflow thresholds and settings.
Isolate Allows the Detector to be isolated and De-isolated.
Start Test Enables the Sensitivity Test of the detector head.
The above functions are available to an operator and are dependent upon the current status of the
system. Selected functions are only accessed provided a password is correctly entered.
The following is an illustration showing the hierarchy of the display structure. Additionally the key presses
needed to access the required screen are also shown. Subsequent paragraphs in this part of the manual
provide detail information on each screen.