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MLT 2 / BINOS
100 F
Emerson Process Management Manufacturing GmbH & Co. OHG4 - 2
ATEX Instruction Manual
HAS8xE-IM-ATEX
January 2004
4-4 Verifications and Tests on
Modified or Repaired Electrical
Apparatus
Modifications made on the electrical
apparatus affecting the integrity of the type
of protection or the temperature of the
apparatus shall be permitted only if the
modified apparatus is resubmitted to a
testing station.
In the case of repairs of electrical apparatus
affecting the type of protection, the parts
which have been repaired should be
subjected to new routine verifications and
tests. These test s need not necessarily be
made by the manufacturer.
4-4-1 Preparations
To do the routine tests the following steps
have to be performed:
• Disconnect the analyzer and the
pressurization unit from power.
• Seal the purge medium outlet at the
pressurization unit (1“ opening at the left
side).
• Disconnect the containment system
gas connectors from the external gas
lines.
• Disconnect one of the containment
system gas connectors inside the
analyzer and seal the other one.
(Remark: Now it must be possible set
the enclosure under pressure by
applying an external gas (e.g.
compressed air) to the gas connector.)
• Connect an external source of
compressed air as described in the
drawing on the next page (fig. 4-1). The
manometer needs to have a measuring
range of 50 to 100 mbar with a resolution
of 0.1 mbar. The flowmeter needs to
have a measuring range of 10 l/min,
resolution 0.1 l/min.
Refer to the associated manuals for detailed
information on maintenance and
replacement of parts.
4-3 Pressurization Systems and
Other Additional Equipment