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F-Guard IR3 HD User Manual
5 Maintenance
After powering up, the detector should work maintenance-free. Regular checks should be in the
form of a physical inspection and periodically ensure the optical surfaces are clean (windows
and reflective mirror). It is also recommended to perform a function test annually or in line with
local requirements, whichever is the sooner.
Warning
The sensor module in the front half of the detector contains no serviceable components
and should never be opened. The terminal compartment at the back is the only part of
the housing that should be opened by the user. Any violation of these instructions will
invalidate the warranty.
Cleaning Procedure
To clean the detector:
a) Disconnect the power to the unit and disable/inhibit any extinguishing equipment that is
connected to the unit.
b) Use water and detergent to clean the detector windows and underside of the reflector.
Rinse with a soft cloth, cotton swab, or tissue.
c) Where dust, dirt or moisture accumulates on the window, first clean the window with a
soft optical cloth and detergent, and then rinse with a clean soft cloth, cotton swab, or
tissue. If contamination continues to be an issue consider using the air shield.
