ELMO-G Blower - Vacuum pump 1000 m3/h The blowers are made by German ELMO Vacuum Technology GmbH, a Siemens company in year 2002 and they are single stage, gas ring type. The vacuum pumps are in good operational condition. We have three identical pump units and originally the pumps were in dust suction operation and therefore the delivery includes 3 pcs high efficiency cyclone type dust filter with electric discharge vibrators. Motor speed is controlled with individual inverters. Units can be sold separately. ELMO-G vacuum pumps can be used for suction operation or as compressors in pneumatic transportation system. They have side-channel principle using gas ring as a sealing and the gas flows through the compressor along a helical trajectory and is repeatedly accelerated and thereby repeatedly compressed according to the required operating point. The blowers are oil-free and thus suitable for various applications. The blowersÆ have both suction and discharge noise silencer. For pump curves, both in suction and compression, as well as additional information please contact us. Technical Data: Manufacturer's type:ELMO 2BH1943-1GC36 Year of manufacture:2002 Suction capacity with max vacuum:16,7 m3/min (50Hz) Suction capacity with max discharge pressure:21,5 m3/min (50Hz) Max pressure difference in vacuum operation:0,30 bar (50 Hz) Max pressure difference in compression operation:0,35 bar (50 Hz) Inverter:Danfors VTL 6000 HVAC Blower's rotation speed2920 rpm / 50 Hz and 3520 rpm / 60 Hz Electric motor (Siemens):50 Hz: 21.0 kW û 300/690V û 39.5 / 23.0 A 60 Hz: 24.2 kW û 460 V û 41.0 A Protection class:IP 54.