© nash_elmo Industries GmbHPostfach 151097605 Bad Neustadt / SaaleGermanyAll rights reserved. Order No.: 610.44436.40.000Edition 09/2003EnglishPhone: +49 911 1454 5268Fax: +49 911 1454 5252E-mail: service@nash-elmo.comInternet: www.nash-elmo.comGas-Ring VacuumPumps/Compressors OperatingInstructionsSeries G_400Models 2BH7 2 2BH7 3 2BH7 4 2BH7 5 2BH7 6Single-impeller model(single-stage)Two-impeller model(two-stage)Three-impeller model(three-stage)