MRBP.425241.001 UM version 1.1 01.05.2022 FD 329/330-3-
1 «Vega»
21
9.1 Functionality check
After the equipment mounting and wiring it is necessary to perform FD 329/330-3-1
«VEGA» functionality check. In addition, this check should be carried out regularly at
intervals of once every 6 months during maintenance.
9.1.1 Manual mode
To check the detector’s functionality by the method of illumination, a special test
radiation source is used.
The test radiation source is designed to check the operability of fire detectors without
dismounting the latter from their workplaces. The radiation of the test source has
characteristics that are as close as possible to the characteristics of electromagnetic
radiation that accompanies the combustion of petroleum products and their vapors, natural
gas and other hydrocarbons.
The test source generates a directional complex modulated radiation with an intensity
sufficient for the appearance of the "Fire" signal at the FD 329/330-3-
1 «VEGA» output, at
a distance corresponding to a specific version of the detector.
To check the detector’s functionality by the method of illumination by a test
radiation source
it is necessary to do the following
:
1. Direct the test source to the flame detector, located at a distance of up to 2 m and
press the switch button;
2. Correct the radiation direction so that the FD 329/330-3-
1 «VEGA» receivers are
illuminated by the radiation source. For FD 329/330-3-
1 «VEGA» actuation it is necessary
to endure the test source radiation on its photo emitters for 4..5 seconds. FD 329/330-3-1
«VEGA» actuation is indicated by LED indicators constant red glowing for 5..6 seconds.
3. After FD 329/330-3-
1 «VEGA» actuation turn off the source.
If it is necessary that the output signal does not contain an alarm signal, then a
magnetic bracelet must be put on the FD 329/330-3-
1 «VEGA» (Figure 12). In this case
FD 329/330-3-
1 «VEGA» actuation is controlled only visually by means of LED indicators,
which should glow constantly at
«FIRE» signal. If the detector does not pass the test
successfully, the procedures described in the
«Troubleshooting» section must be followed.
Figure 12
–
FD 329/330-3-
1 «VEGA»
lateral side
where, 1
–Magnetic key
2 - Recess in the housing for correct installation of the clamp
Switching from ModBus protocol to HART protocol and from HART protocol to ModBus
protocol possible via magnetic key.
1
2
