Comelit ILS-2, Manual

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8 Maintenance
With normal use, the filter element will eventually become contaminated with dust particles contained in the
extracted air. It is recommended that the filter element (code 02-FL53) is replaced and detectors cleaned
every 6 months (more frequently for dirty environments).
Note:
maintenance should be performed by authorised personnel. Before carrying out any maintenance, notify
the proper authorities and isolate (disable) the unit to prevent incorrect alarm statuses from being
triggered on the monitoring and signalling control panel.
Please follow the steps illustrated when performing a maintenance check on the system:
1. Remove the transparent cover using the special tool provided.
2. Disconnect the unit from the power supply.
3. Lift out the filter element from the inlet pipe (long-nosed pliers are recommended for this
operation).
4. Fit the new filter element, ensuring that it is not compressed during fitting. Fit it inside the pipe so that the
top surface of the filter is positioned flush with the pipe.
5. Remove the point detector(s) from the mounting base by twisting them anti-clockwise.
6. Remove the detector cover by prying away the 4 side tabs with a small-bladed flathead screwdriver.
7. Carefully vacuum the inside of the point detector. If further cleaning is required continue with Step 8,
otherwise skip to Step 12.
8. Remove the mesh insect screen and the optical chamber by pulling them out.
9. Clean the chamber again by vacuuming or blowing out dust and dirt particles.
10. Replace the optical chamber cover, aligning the arrows on the top with the arrow on the printed circuit board.
11. To replace the mesh insect screen, place it on the grooves over the optical chamber, turning it until it snaps
into place.
12. Replace the plastic cover using the status LED holes to align the cover.
13. Reinstall the detector onto its mounting base, ensuring that it is in the SAME POSITION (address 1 fitted
to detector 1 position).
14. Refit the transparent plastic cover, restore the power supply and carry out the Flow Calibration procedure.
15. Restore the relays’ enabled status.