For more information & technical support:
26
F-Guard UV-IR-HD User Manual
F130V0020.06
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” fault the detector may still detect flames but at a lower sensitivity.
When “Manual BIT – Alarm Output Test” feature is enabled (see section3.11), 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
Make sure all fire extinguishing actions or alarms connected to the detector are DISABLED, when the
manual BIT is initiated and the “Manual BIT – Alarm Output Test” is enabled, as the manual BIT will set
the 0-20mA terminal to 20mA and close the alarm relay.
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. 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:
