Special Conditions Of Use - Baker Hughes Masoneilan 496 Series Instruction Manual

11. Special Conditions of Use

11.1. For Intrinsic Safety and Flameproof
Types 496-•58, 496-•58/•, 496-858, 496-858/• and
Types 496-•57, 496-•57/•, 496-857, 496-857/•
a. It is under the user responsibility to check once a
year the gaskets and in the event of damage to
replace the defective parts with manufacturer's
replacement parts only.
b. For use in dusty hazardous areas, the user will
have to proceed to a cleaning regularly the
different sides of the enclosure to avoid the
deposits of dusts, the maximum thickness must
be <5 mm. This cleaning will be done using
recommendations defined in §c.
For safe operation, this can be done only if
the local conditions around the device are
free of potentially explosive atmosphere.
c. To avoid any spark due to electrostatic
discharges, it is requested to follow the
instructions of IEC/TS 60079-32-1. For
example, the user will proceed a cleaning of
the device and mainly the plastic label with a
wet rag to. For safe operation, this can be
done only if the local conditions around
the device are free of potentially explosive
atmosphere.
d. The user will have to check the temperature
increase on the 496 head coming from the
mechanical part in contact with the 496 housing
or through the process thermal radiation be less
or equal than the temperature classification
allowed. This must be done in conformance with
EN 60079-14 and/or national and local
regulations applicable for explosible
atmospheres.
e. The final user during the 496 installation on site
must show the protection mode used on the serial
plate removing the tears off tabs or putting a cross
in the dedicated area. This is a requirement only
for multi protection marking. The label here on the
right is shown for example only and not
representative to the 496 label.
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