System Sensor 1251 Plug-in Intelligent - Manual (Page 3)

D200-51-00 3 I56-548-07R
Figure 2. Test Magnet positioning:
Figure 3:
Cleaning
Before cleaning, notify the proper authorities that the sys-
tem is undergoing maintenance and will be temporarily out
of service. Disable the system to prevent unwanted alarms.
1. Remove the sensor to be cleaned from the system.
2. Remove the sensor cover. Use a small standard screw-
driver to release each of the four cover removal tabs that
hold the cover in place.
3. Vacuum the outside of the screen carefully without
removing it.
4. Remove the sensor screen. Pull the screen straight away
from the sensing chamber until it snaps out of place.
Replacement screens are available.
5. Use a vacuum cleaner or clean, compressed air to
remove dust and debris from the sensing chamber.
6. Reinstall or replace the sensing chamber screen by slid-
ing the edge without the tabs over the sensing chamber.
Make sure that one of the Screen Contacts touches the
Circuit Board Contact.
7. Reinstall the sensor cover. Use the LEDs to align the
cover with the sensor. Snap the cover into place.
8. When all sensors have been cleaned, restore power to
the system and test the sensor(s) as described in the
TESTING section of this manual.
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