Yokogawa ADMAG AXR - Manual (Page 193)

IM 01E30D01-01EN
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IM 01E30D01-01EN
<INSTALLATION AND OPERATING PRECAUTIONS FOR TIIS FLAMEPROOF EQUIPMENT>
CAUTION
Do not attempt to re-process threaded
connections or refinish joints or mating surfaces.
(c) Unless otherwise specified, the electrical
circuitry and internal mechanisms may be
repaired by component replacement, as this
will not directly affect the requirements for
flameproof apparatus (however, bear in mind
that the apparatus must always be restored to
its original condition). If you attempt to repair
the flameproof apparatus, company-specified
components shall be used.
(d) Before starting to service the apparatus, be sure
to check all parts necessary for retaining the
requirements for flameproof apparatus. For this,
check that all screws, bolts, nuts, and threaded
connections have properly been tightened.
(3) Prohibition of specification changes and
modifications
Do not attempt to change specifications or make
modifications involving addition of or changes in
external wiring connections.
7. Selection of Cable Entry
Devices for Flameproof Type
CAUTION
The cable glands (cable entry devices for
flameproof type) conforming to IEC Standards
are certified in combination with the flameproof
apparatus. So, Yokogawa-specified cable entry
devices for flameproof type shall be used to meet
this demand.
References:
(1) Type Certificate Guide for Explosion-Protected
Construction Electrical Machinery and
Equipment (relating to Technical Standards
Conforming to International Standards), issued
by the Technical Institution of Industrial Safety,
Japan
(2) USER’S GUIDELINES for Electrical
Installations for Explosive Gas Atmospheres
in General Industry (1994), issued by the
Japanese Ministry of Labour, the Research
Institute of Industrial Safet