VACUUBRAND PC 301 - Manual (Page 13)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999147 / 17/06/2014
page 13 of 40
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 inner part (wetted part, pumped
gas or vapor) of the equipment. The equipment is not suitable for use in external, potentially explosive
atmospheres (environment).
The overall category of the equipment depends on the connected components. If the connected compo-
nents do not comply with the classification 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the VACUUBRAND equipment is no longer valid.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 connection to equipment in which
during normal operation explosive atmospheres 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 during normal operation.
The use of gas ballast or the operation of venting valves is only permitted if thereby explosive atmo-
spheres 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 equipment is marked with ”X” (according to EN 13463-1), i.e., restrictions of the operation condi-
tions:
• 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).
• The equipment is designated for an ambient and gas inlet temperature during operation of +10 to
+40°C. Never exceed these ambient and gas inlet temperatures. If pumping / measuring gases
which are not potentially explosive, extended gas inlet temperatures are permissible. See instruc-
tions for use, section “Gas inlet temperatures” or “Technical data”
After any intervention at the equipment (e.g., repair / maintenance) the ultimate vacuum of the pump
has to be checked. Only if the pump achieves its specified ultimate vacuum is the pump’s leak rate low
enough to ensure that no explosive atmospheres will occur in the interior of the equipment.
After any intervention at the vacuum sensor, the leak rate of the equipment has to be checked.
Attention: This manual is not available in all languages of the
EU. The user must not operate the device if he does not under-
stand this manual. In this case a technically correct translation
of the complete manual has to be available. The manual must
be completely read and understood before operation of the de-
vice. All specified measures must be applied, or else must be
replaced by equivalent measures at the user’s own risk.
` Important information: Equipment marking (ATEX)