6 Maintenance
US FL5000 Multi-Spectrum Flame Detector 37
6 Maintenance
6.1 General Maintenance
Once correctly installed, the unit requires very little maintenance other than regular sensitivity checks and cleaning of the
window. MSA recommends that a schedule be established and followed. Do not remove the electronics from the housing.
Doing so will void the equipment’s warranty.
NOTE: The removal of particulate matter and any film buildup on the Sapphire Window and COPM Reflector is necessary
to ensure proper sensitivity of the system. It is recommended that the window and reflector be cleaned at least every 30
days if the detector is located in a particularly dirty environment.
6.2 Cleaning the Sapphire Window
Use Industrial Strength Windex® with Ammonia D (PN 10272-1) to clean the sapphire window. The window is not glass; it
is made from sapphire. Do not touch the window or COPM reflector with fingers.
1. Wet a clean, soft, lint-free cloth, tissue or cotton swab with the cleaning solution.
2. Apply the solution to the window only.
NOTE: Do not apply the cleaning solution to the FL5000 housing.
3. Using a dry, unsoiled cloth, wipe until the window is clean.
4. Completely dry the window.
5. Repeat steps 1 through 4 for the reflector.
CAUTION!
Dirty or partially blocked windows can significantly reduce the detectors field of view and detection distance. Do not use
a commercial glass cleaner other than Industrial Strength Windex® with Ammonia D.
Failure to follow this caution can result in minor or moderate injury.
Figure 20 Optical Parts to Clean
(A) - COPMReflector (Beneath Surface)
(B) - Sapphire Window
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