Sens SG-A1, User Manual

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SENS.413347.015RE
12
Type of explosion protection "flameproof enclosure "d" is achieved by housing of
electrical circuits into flameproof enclosure which has a high degree of mechanical strength,
withstands pressure of explosion and eliminates transfer of explosion into explosive area.
Drawing of explosion protection means for explosion protection type "flameproof
enclosure "d" is shown in figure F.1 of Annex F.
Couplings of parts providing "d" type of explosion protection are shown on drawing of
explosion protection means and marked with "EXPLOSION" word.
Explosion-proof feature and tightness of cable entry is achieved by strong compression
of outer cable insulation by packing ring (5) (figure E.1 of Annex E) along its whole length
threaded bushing (4) must be screwed with force specified in figure E.1 of Annex E
. For
connection of gas detector a cable with round cross-section is applied, with outer diameter:
(5…8) mm, (8…10) mm, (10…12) mm, (12…14) mm, (14…16) mm, (16…18) mm. Depending
on outer diameter of applied cable, a corresponding packing ring (5) is applied. Packing ring
has marking corresponding to diameter of clamped cable:
-
for D12 cable entry: «5-8», «8-10», «10-12»;
-
for D18 cable entry: «12-14», «14-16», «16-18».
Housing of gas detector has external grounding clamp. Grounding clamp is secured
against self-unscrewing by application of spring washer and manufactured in accordance with
GOST 21330.
Maximal temperature of outer surface corresponds to temperature class T4.
Gas detector marking includes warning inscription
"ОТКРЫВАТЬ, ОТКЛЮЧИВ
ПИТАНИЕ" (DO NOT OPEN WHEN ENERGIZED).
8 INSTRUCTIONS ON INSTALLATION, COMMISSIONING, OPERATION,
MAINTENANCE AND REPAIR
8.1 Safety measures instructions
8.1.1 Installation, commissioning, operation, maintenance and repair of the valves shall
be performed in accordance with requirements of:
GOST 31610.17;
GOST 31610.19;
GOST IEC 60079-29-2.
as well as other acting regulatory documents regulating requirements for provision of fire and
explosion safety, safety measures, ecological safety on organization and operation of electrical
installations.
8.1.2 Only persons who studied User Manual and documents listed in article 8.1.1 as well as
given proper instructions are allowed to install, operate, do maintenance and repair.
8.1.3 Installation and deinstallation shall be only performed with power supply disconnected.
8.1.4 Ingress of moisture inside cable entries is not allowed during installation.
8.1.5 Grounding shall be performed in accordance with the requirements of regulatory
documents using grounding devices shown on drawing.
8.1.6 When working with cylinders containing pressurized verification gas mixtures, it is
necessary to observe safety requirements in accordance with Federal rules and regulations
document "Rules of industrial safety of hazardous production facilities that use equipment working
under excess pressure", approved by the order of Rostechnadzor dated 25.03.2014, No.116.
8.1.7 It is not allowed to discharge VGM in the atmosphere of working premises during
maintenance of gas detector.
8.2 Operational limitations
Operation of gas detector is not allowed when:
- it has mechanical damages;