Model FL3102
22
4.0 Maintenance
4.1 General
Maintenance
Once correctly installed, the unit requires very little maintenance other than
regular sensitivity checks and cleaning of the lenses. General Monitors
recommends that a schedule be established and adhered to.
NOTE –
The removal of particulate matter and any film buildup on the lenses and
light rods is necessary to ensure proper sensitivity of the system. It is
recommended that the window and light rods be cleaned at least every 30 days
or more often if the detector is located in a particularly dirty environment.
4.2 Cleaning the Lenses
A clean, soft, lint-free cloth, tissue or cotton swab should be used to apply the
cleaning solution. Do not touch the lenses or light rods with fingers.
1. Wet the window with the solution.
2. Rub with a dry, unsoiled cloth until the window is clean.
3. Completely dry the window.
4. Repeat steps a, b and c for the light rods.
(See figure 29). Take care only to clean the uncoated (non - aluminum) areas of
the light rods.
WARNING – 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”
The lenses are not glass. One IR lens material is quartz and the other IR lens
material is sapphire. The cleaning solution should be General Monitors’ P/N
10272-1 (Industrial Strength Windex® with Ammonia D).
Figure 29 IR Windows