D100-101-00 3 I56-2806-003R
Sensor
Cover
Sensing
Chamber
Cover and
Screen
Cover
Removal
Tabs
Sensing
Chamber
Optional
Thermistors
(2151T only)
Figure 2:
C0892-00
Cleaning
Before removing the detector, notify the proper authorities
that the smoke detector system is undergoing maintenance
and will be temporarily out of service. Disable the zone or sys-
tem undergoing maintenance to prevent unwanted alarms.
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover by pressing firmly on each of
the four removal tabs that hold the cover in place.
3. Vacuum the screen carefully without removing it.
If further cleaning is required continue with Step 4, oth-
erwise skip to Step 7.
4. Remove the chamber cover/screen assembly by pulling
it straight out.
5. Use a vacuum cleaner or compressed air to remove dust
and debris from the sensing chamber.
6. Reinstall the chamber cover/screen assembly by slid-
ing the edge over the sensing chamber. Turn until it is
firmly in place.
7. Replace the cover using the LEDs to align the cover and
then gently pushing it until it locks into place. Make
sure that the thermistors do not become bent under the
cover on 2151T.
8. Reinstall the detector.
9. Test the detector as described in TESTING.
10. Reconnect disabled circuits.
11. Notify the proper authorities that the system is back on line.
Special Note Regarding Smoke Detector Guards
Smoke detectors are not to be used with detector guards
unless the combination has been evaluated and found
suitable for that purpose.
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