MRBP.425241.001 UM version 1.1 01.05.2022 FD 329/330-3-
1 «Vega»
24
10. Maintenance service
Maintenance service includes:
-
FD 329/330-3-
1 «VEGA» visual inspection;
-
FD 329/330-3-
1 «VEGA» clearing;
-
Grounding and explosion-protection state check;
-
Functionality check.
Visual inspection.
During visual inspection it is necessary to check:
-
standby mode indication by the detector;
-
housing integrity (viewing window integrity, absence of dents, corrosion and other
mechanical damage);
-
presence of all fasteners and their elements, the quality of fasteners;
-
presence and integrity of the sealing;
-
Ex-marking presence;
-
the grounding condition, checked by the wiring complexity and the presence of
grease on the contacts.
Clearing
of the
FD 329/330-3-
1 «VEGA» is performed every 6 months in the absence
of strong external dust or
или as required in the presence of «Failure» signals or the
presence of visible dust on the FD 329/330-3-
1 «VEGA» surface. Clearing is carried out by
removing dust with a sweeping brush or slightly damp cloth from the housing and clearing
the windows of the FD 329/330-3-
1 «VEGA» with a cloth dampened with rectified alcohol.
After wiping with alcohol, wipe the surface again with dry cloth to eliminate residual dirt.
The consumption rate of alcohol for one service - 3 gr. If the detector is still not
operational, then it should be sent for repair to the manufacturer.
Functionality check procedure is described in the
«Manual mode» section.
11. Troubleshooting
Detector’s possible troubles are given in table 3
Table 3
№ Trouble signs
Possible reasons
Remedy
1
Lack of the signal red LEDs
glow
No supply voltage
Disconnect the base with cable
gland from FD 329/330-3-1
«VEGA» housing and make
sure that there is a voltage of
24±6 V on the terminals.
2
«Failure» relay contacts are
open, alarm LEDs flash
quickly
Protective glass is dusty
Wipe the protective glass with a
cloth dumpened in alcohol and
then wipe with a dry, clean cloth.
3
FD 329/330-3-
1 «VEGA»
do not respond to test flame
Partial glasses
contamination or the
ingress of substances on
them that prevent the
passage of radiation to
sensitive elements
See steps in line 2
Limit states and fatal failures
Fatal failures:
- loss of containment. Stop using the detector.
