Smoke Alarm User Manual

Installation, Operation and Maintenance Manual
Page 8-8 Issue 1
February 2001
8.4 Replacement
The following paragraphs provide a list of procedures used to replace a faulty item within the High
Sensitivity Smoke Detector (HSSD) system. These procedures describe how to remove the item from its
location and how to insert the replacement item.
LASER HAZARD
The detector in the enclosure is a factory-sealed unit
containing a Class-3B laser product with invisible
radiation.
AVOID EXPOSURE TO BEAM
Extended exposure to a Class-3B laser directly or
indirectly may cause severe damage to the human eye.
8.4.1 Replacing the Detector
When considering the following list of procedures to replace the Detector, it is assumed that the lid has
been removed. Proceed as follows:
(1) Remove the 24 V DC supply.
(2) Disconnect all external cable connections.
(3) Remove the detector head (refer to para 8.4.2).
(4) Disconnect the exhaust port adapter, if used.
(5) Unscrew the mounting screws from the 4-corner mounting holes.
(6) Slide the Detector from the pipe network system. Note the incoming pipe does not
require removing from the inlet adapter, as connection can be removed from the rear of
the enclosure.
To replace the Detector, secure the item in position by using the 4-corner mounting holes. When the
Detector is in position, the detector head can be replaced and all external fittings can be fitted.
Prior to powering up the Detector for the first time, ensure that the following procedures have been
completed:
(1) The Detector is secured correctly.
(2) The Detector is connected correctly.
CAUTION
!
WARNING
!