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6
MAINTENANCE
Service should be conducted at least once every six months with the
detectors disconnected, so as not to cause false alarms.
Service consists in removing dust and dirt from the filters and housings on
the transmitter and receiver. Cleaning optical surfaces should be done with a soft,
lint-free cloth moistened in water (if contamination of optical surfaces is not
removed by a damp cloth).
ATTENTION! Do not use acetone-containing liquids and other solvents
that can damage the surfaces of optical elements.
