2000 SERIES SENSORS INSTALLATION GUIDE Revision 3.1 June 1997
Figure 9 : Sequences Displayed on 7-Segment Display
2.2.7 Testing, Maintenance and Cleaning
All 2000 Series Smoke Detectors are shipped with a plastic dust cover for use in areas
where construction is on-going. Smoke Detectors will not work with the dust cover in
place. Remove the dust cover when installation is completed, prior to testing.
All Smoke Detectors should be tested in place at least annually or according to local
regulations, to ensure smoke entry into the sensing chamber and alarm response. If
canned smoke (test aerosol) is used, carefully follow the manufacturer's directions to
avoid damage to the detector.
Test Heat Sensors by using a hot air gun (Figure 10A). Aim at heat sensor from 15 to
25cm away. Be careful not to melt the plastic.
The sensing chamber of the 2000 Series Photo-electric Detector unsnaps for easy field
cleaning and service (Figure 10B). Whenever the diagnostics indicates that cleaning is
necessary, remove the photoelectric detector cap, snap off and throw away the optical
block chamber (Figure 10C). Then blow off the optical block base and snap a new
optical block chamber back in place, replace the cap and verify sensitivity.
For 2000 Series Ionisation Detectors, remove the detector cover and clean the sensing
chamber and chamber screen whenever diagnostics indicate cleaning is necessary
(Figure 10D). Use a vacuum and/or filtered compressed air to remove dirt from the
chamber's interior. After cleaning, replace the chamber screen and detector cover and
verify sensitivity. If sensitivity remains out of limits, replace the sensor and return the
removed one to the manufacturer for cleaning and re-calibration.
Ionisation Sensors contain a radioactive source and should not be opened any further
than to clean as per above.
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