AGF-VA-23, K-AGF-VA-23
1 Introduction
This quick guide will assist you in starting up the unit. Follow
the safety notices or injury to health or property damage may
occur. Carefully read the original operating instructions in-
cluding information on maintenance and troubleshooting
prior to startup. These are located on the included CD and on-
line at
Please direct any questions to:
Bühler Technologies GmbH
Harkortstraße 29
40880 Ratingen
Germany
Tel.: +49 (0) 21 02 / 49 89-0
Fax: +49 (0) 21 02 / 49 89-20
These operating instructions are a part of the equipment. The
manufacturer reserves the right to change performance-, spe-
cification- or technical data without prior notice. Please keep
these instructions for future reference.
1.1 Intended Use
The filters may be used in a gas analysis system to filter
sample gas.
Filters AGF-VA-23 and K-AGF-VA-23 may further be used in ex-
plosive atmosphere areas zone 1 and 2, explosion class IIA, IIB
and IIC. When used for this purpose, the information in
chapter “Use in explosive atmosphere areas“ must be fol-
lowed in addition to the other information in these operating
instructions.
1.2 Scope of delivery
• 1 x Filter
• Product documentation
2 Safety instructions
The equipment must be installed by a professional familiar
with the safety requirements and risks.
Be sure to observe the safety regulations and generally applic-
able rules of technology relevant for the installation site. Pre-
vent malfunctions and avoid personal injuries and property
damage.
The operator of the system must ensure:
• Safety notices and operating instructions are available
and observed,
• The respective national accident prevention regulations
are observed,
• The permissible data and operational conditions are
maintained,
• Safety guards are used and mandatory maintenance is
performed,
• Legal regulations are observed during disposal,
• compliance with national installation regulations.
DANGER
Toxic, corrosive gases
The measuring gas led through the equipment can be hazard-
ous when breathing or touching it.
a) Check tightness of the measuring system before putting
it into operation.
b) Take care that harmful gases are exhausted to a save
place.
c) Before maintenance turn off the gas supply and make
sure that it cannot be turned on unintentionally.
d) Protect yourself during maintenance against toxic / cor-
rosive gases. Use suitable protective equipment.
3 Use in explosive atmosphere areas
Intended Use
Filters AGF-VA-23 and K-AGF-VA-23 may be used in explosive
atmosphere areas zone 1 and 2. Explosion classes IIA, IIB and
IIC are approved. The filters have no innate ignition source
and do not fall into the application of Directive 2014/34/EU
and therefore do not bear the CE mark.
II 2/2G c IIC TX X, -5°C <T
amb
< +60 °C
The ambient temperatures must not be below -5 °C or above
60 °C.
The highest surface temperature is directly affected by the
temperature of the medium introduced. The medium intro-
duced must not exceed the maximum temperature of 100 °C.
If necessary, a temperature monitor should be installed.
When operating the filters with moisture detector and con-
troller, these must be inherently safe according to EN
60079-11.
When using a moisture detector, its working temperature
may deviate from those specified here and limit the approved
ambient temperature range of the filter as well as the per-
missible medium temperatures.
Depending on the process conditions, pressure- or flow
sensors may be required for continuous monitoring. If the
process holds a risk of flame propagation a flame arrestor
must be installed.
The approved explosion class of the inner zone varies by the
filter element used. See chapter AGF-VA-23 and K-AGF-VA-23
to match filter element options with explosion classes.
Safety instructions
The following safety notices must absolutely be followed
when operating the filter in an area with explosive atmo-
sphere. Failure to do so can result in an explosion hazard.
• Only perform installation-, removal- and maintenance
work in non-explosive atmosphere.
• Protect filter from mechanical impact. If necessary, install
a cover which withstands at least 4 joule.
• Protect filter from vibration, or avoid vibration. If neces-
sary, mechanically brace supply and discharge lines.
• Observe all limits, operating parameters, etc. specified in
these operating instructions and the data sheet.
5
Bühler Technologies GmbH
BX410012 ◦ 10/2021
