VACUUBRAND MZ 1C - Manual (Page 22)

page 22 of 102
` Important information: Equipment marking (ATEX)
VACUUBRAND equipment bearing mark (see rating plate)
` II 3G IIC T3 X
Internal Atm. only
Tech. File Ref.: VAC-EX01
The classification II 3G IIC T3 X according to ATEX is only valid for the in-
ner part (wetted part, pumped gas or vapor) of the equipment. The equip-
ment is not suitable for use in external, potentially explosive atmospheres
(environment).
The overall category of the equipment depends on the connected com-
ponents. If the connected components do not comply with the classifi-
cation of the VACUUBRAND equipment, the specified category of the
VACUUBRAND equipment is no longer valid.
Vacuum pumps and vacuum gauges in category 3 are intended for con-
nection to equipment in which during normal operation explosive atmo-
spheres caused by gases, vapors or mists normally don’t occur; or, if they
do occur, are likely to do so only infrequently and for a short period only.
Equipment in this category ensures the requisite level of protection dur-
ing normal operation.
The use of gas ballast or the operation of venting valves is only permit-
ted if thereby explosive atmospheres normally don’t occur in the interior
of the equipment or, if they do occur, are likely to do so only infrequently
and for a short period.
The pumps are marked with ”X” (according to EN 13463-1), i.e., restric-
tions of the operation conditions:
• The equipment is designated for a low degree of mechanical stress
and has to be installed in a way so that it cannot be damaged from
outside.
Pumping units have to be installed so that they are protected against
shocks from the outside and against glass splinters in the event of
breakage (implosion).