MRBP.425241.001 UM version 1.1 01.05.2022 FD 329/330-3-
1 «Vega»
12
Availability of a sufficient number of detectors to protect the controlled area;
The detector must be mounted on a rigid surface that is not subject to vibrations;
The detector must be easily accessible for periodic maintenance service;
While mounting take measures to prevent moisture from getting into the
electrical connections or components of the detector. Ensuring moisture
protection is necessary to keep the device in operation.
7.2 Preparation
Before FD 329/330-3-
1 «VEGA» mounting a visual inspection is carried out. It needs to
pay attention to:
1)
FD 329/330-3-
1 «VEGA» ex-marking and a warning label;
2)
zero damages;
3)
presence of all the fasteners (bolts, nuts, washers) in accordance with FD
329/330-3-
1 «VEGA» site placement project;
4)
presence and integrity of the connecting wires (coming out of FD 329/330-3-1
«VEGA» insulation;
5)
presence and integrity of the seal on the housing of FD 329/330-3-
1 «VEGA».
6)
It is recommended to connect FD 329/330-3-
1 «VEGA» analogue outputs located
in the hazardous area with an external device located in the non-explosive area using a
control armored cable of the
КВБбШв4х1,5 brand according to GOST 1508-78. The
КВБбШв cable can be used in hazardous areas of any class, including indoors, outdoors, in
channels, tunnels, ground (trench) in an aggressive environment, in places exposed to stray
currents.
7)
While FD 329/330-3-
1 «VEGA» mounting it is necessary to check the condition of
the ex-proof parts subjected to disassembly for compliance with the requirements of the EX
protection drawing (appendix B).
8)
Check the availability of cable gland seals and plugs.
9)
The external grounding conductor must be carefully stripped, and its connection
to the grounding clamp must be protected from corrosion by applying grease.
10)
Upon mounting completion, the grounding device resistance must be checked
and must not exceed 4 Ohm.
7.3 Cable requirements. Cable gland
It is recommended to connect FD 329/330-3-
1 «VEGA» analogue outputs located in
the hazardous area with an external device located in the non-explosive area using a
control armored cable of the
КВБбШв4х1,5 brand according to GOST 1508-78. The
КВБбШв cable can be used in hazardous areas of any class, including indoors, outdoors,
in channels, tunnels, ground (trench) in an aggressive environment, in places exposed to
stray currents.
Use certified cable glands M20 while mounting.
The cable sealing on the cable gland must be carried out in every manner, since the
explosion-resistance of the entry compartment depends of this.
Notice: If it is necessary to connect piping to a cable gland
with a ¾’ NPT thread, the
connection is made using a transitional threaded sleeve:
