4
Maintaining the Detector
The 511/518 Series smoke detectors are designed for
easy field service and maintenance. When installed and
used properly, they require minimal maintenance.
The smoke detector should be tested weekly. See
Testing the Detector Sensitivity
and
Smoke Testing the
Detector.
Cleaning the Detector
Clean the detector cover with a dry or damp (water) cloth as
needed to keep it free from dust and dirt.
When necessary, clean the detector interior and
replace
the
optical chamber as follows:
1. Disconnect the alarm notification appliances, service
release devices and extinguishing systems.
2. Slide a flat-blade screwdriver into the slot on the detector
cap and gently push the handle down to pry the cap up
and off. See Figure 7.
3. Press in on the sides of the optical chamber and pull it up
and away from the detector and discard. See Figure 8.
4. Use a vacuum to remove dust and dirt from the optical
chamber base.
5. Line the new optical chamber up with the optical chamber
base and snap it down into place.
6. Replace the detector cap as follows:
-Line the tabs on the cap with the slots on the detector.
-Insert the cap into the smoke detector and turn
clockwise approximately 15 degrees. It should
snap firmly into place.
7. Test the detector sensitivity (See
Testing the Detector
Sensitivity).
8. Reconnect all alarm notification appliances, service
release devices and extinguishing systems.
Important
: The control panel alarm and all auxiliary
functions should be verified for a complete test of the
system.
Screwdriver slot
Detector
Cap
SQUEEZE
HERE
Optical
chamber
Cap
Optical
chamber
base
Figure 7 - Removing the Detector Cap
Figure 8 - Removing the Optical Chamber
