Smoke Alarm User Manual

Installation, Operation and Maintenance Manual
Issue 1 Page 1-1
February 2001
1 INTRODUCTION
This manual contains operation, installation, maintenance, trouble shooting and parts list information for
the High Sensitivity Smoke Detection (HSSD) system.
The HSSD system is designed to provide high sensitivity smoke detection for an area up to 2000 sq/m
(20,000 sq/ft). Detection of smoke is achieved by using a fan to draw air from the protected area through
sampling pipe network back to a Detector. The Detector will analyse the air for the presence of smoke.
The Detector uses laser based particle counting technology to achieve the highest levels of performance.
The unique design ensures that only smoke particles that pass through a focused laser beam are
detected. Consequently, the Detector’s performance will not be affected by the build up of dirt within the
detection head chamber. Therefore no filters are required and system maintenance is minimal.
Air is continuously sampled from risk areas along a pipe network to the Detector. The standard Detector
has a dynamic sensitivity range from 0.005%/m to 1%/m (0.0015% to 0.3%/ft) obscuration. Alternatively
an ultra Detector has an increased sensitivity range 0.001%/m to 0.1% to (0.0003% to 0.03%/ft) for use
in very clean applications. The Detector sensitivity can be set to accommodate varying background
levels.
A Display Module provides a visual indication of the system status, smoke level, alarm and trouble
conditions of the Detector. Software conditions in the Display Module are condition specific i.e. when the
system is in quiescent “Normal” is displayed with the company logo and time and date information.
Should an alarm or trouble condition be activated then the relevant condition will be displayed. The
Display Module can be fitted into the Detector or remotely mounted.
A termination board located within the Detector provides micro processor control of the HSSD system.
The termination board provides the interface between the detector head, the RS485 network, the Display
Module and the PC Port. An on board memory stores configuration details, history events and system
information.
1.1 Features
The following is a list of major features of the HSSD system.
Laser based particle counting technology.
No particle filters required.
Service port located on the side of the Detector to allow ease of commissioning.
Attachable 1 amp Self Contained Power Supply and battery back up unit.
On site sensitivity selection, to meet specific application requirements.
Four individual alarm levels (Pre-Alarm levels 1 and 2/Alarm levels 1 and 2).
Lasernet network options, 1 to 127 Detectors per system. Using RS485 communications.
Modular design for fast and easy servicing.
Smoke history and event log storage and battery back-up.