• 1.2.4 Hydrokinetic drive... 5 Change the pump oil...47 Chemical and ATEX compliant EH pumps..5 Lubricate the rear-bearing (All EH250 and EH500 model pumps only). 48 1.3.1 Flameproof motors... 5 Overhaul the pump...49 1.3.2. • The hydrocarbon safe area, ATEX compliant and chemical EH pumps use hydrocarbon oils, such as Edwards Ultragrade 20. Versions of the safe area EH pumps for use with PFPE (perfluoropolyether) oils are also available for vacuum systems in which oxygen or other reactive or corrosive gases are pumped.
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• An 'X' suffix to the EH booster ATEX classification indicates that there are special conditions for safe use of polytetrafluoroethylene (PTFE) or fluoro-elastomer. For EH mechanical boosters that have not been sold as part of a Edwards approved ATEX system please give special attention to Section 2.2. • Table 2 - Temperature classifications Temperature Classification Critical backing pressure [mbar] T160 If you want to use the EH booster outside the critical backing pressure specified above, please contact Edwards for advice. © Edwards Limited 2007. download Ecs Ht2000 Motherboard Manual torrent. All rights reserved. Page 9 Page 10 ©. • Electrical data Lubrication data Note: The motors of EH250, EH500 and EH500IND pumps are supplied configured for ‘low voltage’ operation (230 V Note: Edwards Material Safety Data Sheets for the oils and grease specified below are available on request.