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Testing
The detector has a Built-In-Test (BIT) capability to ensure proper operation and to indicate when the
windows are dirty. The BIT process runs automatically at startup and periodically during the operation of
the detector. The BIT can also be initiated manually by connecting the "Manual BIT" terminal and the
"24 VDC (-)" terminal for one second (see Table 1) or by using the Gastech communicator software
(connected through RS-485).
In case of "Dirty Window" warning the detector may still detect flames but at a lower sensitivity.
When "Manual BIT – Alarm Output Test" feature is enabled (default disabled) using the Gastech
Communicator Software, a successful Manual BIT will activate the following alarm outputs for a few
seconds:
1. The LED in the front of the detector will turn red.
2. The 0-20mA current output will be set to 20mA.
3. The alarm relay will close.
Warning
• When the manual BIT is initiated and "Manual BIT – Alarm Output Test" is enabled using the
Communicator Software, the current output of the detector will go to 20mA and the alarm relay will
activate. Ensure all fire extinguishing actions or alarms connected to the detector are disabled.
Flame Simulator
Flame simulators are often used by industry to perform detector testing during installation and periodic
end to end testing of a flame detector alarm system. Refer to the F-Guard Flame simulator manual
F300V0020 for full instructions.
5 Maintenance
After powering up, the detector should work maintenance free. Regular checks should be in the form of a
physical inspection and to 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. Opening the front of the detector will invalidate the detector warranty.
The terminal compartment at the rear of the detector is the only part of the housing that should
be opened by the user.
Cleaning Procedure
To clean the detector:
For more information & technical support:
F-Guard IR3-H2 User Manual
info@gastech.com
76-M-6010-02-02
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