Models FL3100/3101
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5.0 Maintenance
5.1 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 followed.
WARNING - Disconnect or inhibit external devices, such as automatic
extinguishing or fire suppression systems before performing any maintenance.
NOTE - The removal of particulate matter and any film buildup on the windows
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.
During routine maintenance of the equipment, if the base plate is removed, the
flame path should be replenished with grease compound.
European Union (EU) Approved Applications: The following grease compound is
recommended for use: PBC Plybutylcuprysil, (or equivalent), which has
BASEEFA Health & Safety Executive component approval No. 1051U for use as
a jointing compound on flameproof electrical enclosures. This is available from
General Monitors.
The neoprene rubber gasket should also be lubricated with Type P80 lubricant
available from General Monitors (P/N 610-010) should it be found to be dry.
The removal of dust and film build-up on the windows is necessary to ensure
proper sensitivity of the system. Windows may be cleaned periodically, to avoid
a COPM fault being triggered by build-up, dirt or debris.
For use in environments where windows are likely to become blocked regularly,
an optical air guard is recommended.
5.2 Cleaning the Lenses/Light Rods
NOTE - DO NOT USE A COMMERCIAL GLASS CLEANER OTHER THAN
"INDUSTRIAL STRENGTH WINDEX
®
with Ammonia D”. The lenses are not
glass. The UV lens material is quartz and the IR lens material is sapphire. The
cleaning solution should be General Monitors’ P/N 10272-1 ("Industrial Strength
Windex
®
with Ammonia D").
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.