Silent Call 1008-4 - Manual (Page 25)

25
Maintenance
NOTE: Power must be removed from the detector before performing
maintenance of any kind by removing the detector’s battery.
1. To ensure proper power-down sequence, battery must be removed
from detector for a minimum of 20 seconds before removing
chamber top.
2. Remove the detector cover by turning counterclockwise.
3. Vacuum the cover or use canned air to remove any dust or debris.
4. Remove the top half of the screen/sensing chamber by lifting
straight up (Figure 11).
5. Vacuum or use canned air to remove any dust or particles that are
present on all chamber sections.
6. Replace the top half of the screen/sensing chamber by aligning
the arrow on the screen/sensing chamber with the arrow on the
housing. Press down firmly until the screen/sensing chamber is
fully seated.