LEF/MEF 250 - 630 - LEX/MEX ATEX versions GEOVENT centrifugal fan LEF and MEF with closed backward curving B-wheel and directly driven flange motor. The fan is used for extraction within the industry or for comfort ventilation. The fan has a high efficiency up till 87% and is suitable for PID/constant pressure regulation. The fan is made of 100% galvanized steel for optimum corrosion resistance and therefore, it is suitable for outdoor installation on the roof or on the wall. There is a complete program of accessories, and the fan can be delivered with a number of options, such as flex connection, mountings, rain shield, motor protection, pressure monitor and soundproof box. As standard we supply supporting angels with vibration absorbers, inlet nozzle with net and clamp for mounting the outlet flange. The fan is also supplied in ATEX version according to the 2014/34/EU directive. Then the type is called LEX/ MEX, and it is supplied as standard with EExE motor. Other variants are offered on inquiry. The fan can, on inquiry, be supplied in an acid proof steel version (ANSI 316L) or with built-in frequency converter, two-speed motor, with 6- or 8- poled motors, motors with special voltage or higher efficiency, special high temperature version a.s.o. Air volume up to: Pressure up to: Technical data / Other data / Features Motor: Directly driven by a B5- Flange motor. Sealing class IP-55 angels with vibration absorbers, inlet nozzle with net and clamp for mounting the outlet flange. Testet iht. ISO 5801. Dust amounts and corn size The dust amount from the extracted air may not xceed 12 g/m³. The size of the dust particles may not exceed 6 mm³. The dust/steams may not be sticky. Temperature area Surrounding temperature: Temperature extracted air: Voltage: 3x400V or 1x230V / 50 Hz House: Made of hot-galvanized plate. All screws and bolts are electrolytic galvanized. Inclusive supporting HOVEDGADEN 86 • DK - 8831 LØGSTRUP • Tlf.: (+45) 8664 2211 • E-mail: [email protected]

LEF/MEF 250 - 630 - LEX/MEX ATEX versions Pressure drop curves - LEF/MEF [Pa] 1625 1500 HOVEDGADEN 86 • DK - 8831 LØGSTRUP • Tlf.: (+45) 8664 2211 • E-mail: salg@ge

LEF/MEF 250 - 630 - LEX/MEX ATEX versions Pressure drop curves - LEF/MEF [Pa] HOVEDGADEN 86 • DK - 8831 LØGSTRUP • Tlf.: (+45) 8664 2211 • E-mail: salg@g

LEF/MEF 250 - 630 - LEX/MEX ATEX versions Dimensions ød 6 x M6 I Electrical motors ranging from 0,25 to 4kw are as standard delivered with B5 mounting flange. From 5.5kw and up are delivered with B35 flange/base and support. Dimension table, Fans LEF/MEF (LEX/MEX) Type LEF/MEF 250 */**/*** - depends on motor choice. NB: By LEX/MEX versions the motor will typically have a larger physical measure than standard versions, and therefore it will also have a higher net weigh HOVEDGADEN 86 • DK - 8831 LØGSTRUP • Tlf.: (+45) 8664 2211 • E-mail: salg@g

LEF/MEF 250 - 630 - LEX/MEX ATEX versions Accessories Galvanized rain shield for the fan. Protects the motor from water intrusion Soundproof box for reduction of the sound level. The fan is enclosed in a closed wind- and waterproof galvanized box. The sound is typically subdued to 8-15 dB(A) Wall bracket, hot-galvanized, is supplied in two sizes, For mounting the fan on wall Must be used with supporting angels Outlet flange, hot-galvanized, is supplied in several Different sizes. Is used as transition from the fan’s square yield to a round channel. Sound data - measured in inlet Type HOVEDGADEN...

LEF/MEF 250 - 630 - LEX/MEX ATEX versions A. B. C. D. E. A. Outlet flange, transition from the fan’s square yield to a round channel. The outlet flange, which is a sleeve, has an EPDM rubber packing in sealing class C. By using vibration dampers a flexible connection between the outlet flange and the yield can be inserted. B. Clamp, galvanized, is used for attachment of the outlet flange with the aid of 6 pcs. M6 screws. After mounting you must use joint filler. C. Inlet in sleeve, galvanized, is provided with net to protect the fans impeller and EPDM rubber packing in sealing class c. By using...

LEF/MEF 250 - 630 - LEX/MEX ATEX versions LEF/MEF 250 - 355 Art. no. * = Presupposes the use of an external frequencyconverter. Exhaust air seen from the motor side * = Presupposes the use of an external frequencyconverter. HOVEDGADEN 86 • DK - 8831 LØGSTRUP • Tlf.: (+45) 8664 2211 • E-mail: salg@geoven

LEF/MEF 250 - 630 - LEX/MEX ATEX versions ATEX fan LEX/MEX Our series of ATEX fans with backward curving impellers are as standard supplied with EEx e motors, but can also be supplied with EEx d or EEx de motors. The typical scope of application is zone 1, zone 2 and zone 22. The construction is based on standard LEF/MEF, but has beside the ATEX motor, also protection against stastatic electricity and sparks in the inlet. For ATEX applications, where acid proof execution is needed, this is available. All plate parts, screws and bolts a.s.o. are supplied in Acid proof ANSI 316L and are subsequently...