VACUUBRAND VNC 2 E - Manual (Page 11)

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.: 999199 / 28/11/2012
page 11 of 41
VACUUBRAND equipment bearing mark (see rating plate)
II 3G IIC T3 X
Internal Atm. only
Tech. File Ref.: VAC-EX01
and
VACUUBRAND equipment bearing mark (see rating plate)
X see manual
For equipment labelled with „ X see manual“ the following classification according to Directive 94/9/EC (ATEX) is
valid: 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 components do not
comply with the classification of the VACUUBRAND equipment, the specified category of the VACUUBRAND equip-
ment is no longer valid.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 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., restrictions 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 can-
not be damaged from outside.
Pumping units have to be installed protected against shocks from the outside and against glass splinters in the
event of breaking (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 ex-
plosive, extended gas inlet temperatures are valid, see instructions 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, the pump’s leak rate is 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 understand 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 be-
fore operation of the device and all required measures must be applied.
` Important information: Equipment marking (ATEX)