Smoke Alarm User Manual

Installation, Operation and Maintenance Manual
Issue 1 Page 7-3
February 2001
(4) Avoid placing sensitive devices onto plastic or vinyl surfaces.
(5) Minimise the handling of sensitive devices and Printed Circuit Boards (PCBs).
The Detector optics should be cleaned as necessary. When following the step-by-step procedure it is
assumed that the lid and power supply have been removed from the Detector.
(1) Disconnect the connector at plug PL1 (6-way interconnecting harness).
(2) Rotate the paddle lever quarter of a turn anti-clockwise (refer to figure 8.1).
(3) Release in turn the four retaining clips located at each corner of the detector head.
(4) Lift the detector head clear of the Detector.
(5) The paddle lever is fitted with wire gauze this should be inspected and if required
cleaned. Replace when complete.
(6) Blow through the detector head with dry photographic quality air being careful not to
damage the internal components.
To replace the detector head secure the item in position by the four retaining clips. When the detector
head is in position the paddle lever must be rotated quarter of a turn clockwise to ensure a secure fit.
Connection from the termination board can then be fitted to plug PL1 on the detector head.
7.3.7 Clean Elutriator
(1) Open Elutriator by rotating Enclosure 1/8 turn (Clockwise).
(2) Remove and separate the two halves of the housing.
(3) Clean impact plate and two screens using compressed air or mild cleaning solution.
(4) Refer to Figure 2.8. Reassemble the Impact Plate and Screens. Note airflow orientation.