AGF-T-30, K-AGF-PV-30, RAF-PV-30,ADF-PV-30The highest surface temperature is directly affected by the temperature of the medium introduced. The medium introducedmust not exceed the maximum temperature of 100°C. If necessary, a temperature monitor should be installed.When operating the filters with moisture detector and controller, 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 ambi-ent temperature range of the filter as well as the permissible medium temperatures.Depending on the process conditions, pressure or flow sensors may be required for continuous monitoring. If the process holds arisk of flame propagation a flame arrestor must be installed.The approved explosion class of the inner zone varies by the filter element used. The following table provides an overview of theexplosion classification of possible filter elements:Filter element model:Suitable for gasses in explosion group:S2Group IIC (Zone 1)S2-KUGroup IIC (Zone 1)F2Group IIB (Zone 1)F25Group IIB (Zone 1)F2-LGroup IIB (Zone 1)F25-LGroup IIB (Zone 1)12-57-CGroup IIC (Zone 1)Tab.2: Gas explosion groups for filter elementsSafety instructionsThe following safety notices must absolutely be followed when operating the filter in an area with explosive atmosphere. Fail-ure 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 necessary, mechanically brace supply and discharge lines.–Observe all limits, operating parameters, etc. specified in these operating instructions and the data sheet.–Maintenance and cleaning instructions must be followed.–When used with moist gasses, a condensate separator must be installed. Moist gasses can clog pores in the filter. Gas pres-sure building up can result in an impermissible temperature rise.–Observe the grade of filtration of the fine mesh filter and if necessary install a pre-filtration to ensure larger solid particles donot clog the filter prematurely.–Observe the durability list in this document. Only use media compatible with the filter materials.–Do not repair the filter. Damaged filter components must be replaced.–Do not paint, laminate or otherwise coat the filters.–Observe the applicable constructor regulations, e.g. EN 60079-14, for installation and mounting.–All metallic parts of the filter must be connected to an earth potential. The resistance of a continuity test must not exceed 1MΩ (1*106 Ω).–The sealing materials, e.g. Teflon tape, must be conductive so all parts of the filter are earthed. If necessary, install an earthbridge.Operation and ControlDANGERRisk of explosive gasses leaking and crossing zonesCheck the filter is tight prior to operation.Inadequately sealed filters can leak. Gas may leak or the ambient atmosphere be drawnin. Use a suitable method for the leakage test, appropriate for the application.5Bühler Technologies GmbHBE410011 ◦ 07/2017