User guide

page 9 of 61
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999248 / 28/04/2011
• The pumps are not suitable for pumping substances which may form deposits
inside the pump. Deposits and condensate in the pump may lead to increased
temperatureseven tothe pointof excessingthe maximumpermitted tempera-
tures!
• Ifthereisadangerofformationofdepositsinthepumpchamber(checkinlet
and outlet of the pump), inspect the pump chambers regularly and clean if neces-
sary.
• Thepumpsarenot suitable for pumping dust and have no approval for opera-
tion below ground.
If pumping different substances, it is recommended to purge the pump with air or
inert gas prior to changing the pumped media in order to pump out residues and to
avoid reactions of the pumped substances with each other and with the pump ma-
terials.
Take into consideration interactions and chemical reactions of the pumped me-
dia. Ensure that the materials of the wetted parts are compatible with the pumped
substances, see section ”Technical data”.
1.6 Safety during operation
➨ Adoptsuitablemeasurestopreventthereleaseofdangerous,toxic,explosive,
corrosive,noxiousorpollutinguids,vapoursandgases.Incaseinstallanap-
propriatecollectinganddisposalsystemandtakeprotectiveactionforpumpand
environment.
➨ Prevent any part of the human body from coming into contact with vacuum.
➨ Theuser musttakesuitableprecautionsto preventanyformation ofexplosive
mixturesintheexpansionchamberorattheoutlet.Incaseofe.g.adiaphragm
crack,mechanicallygeneratedsparks,hotsurfacesorstaticelectricitymayignite
thesemixtures.Useinertgasforgasballastorventingifnecessary.
➨ Potentiallyexplosivemixturesattheoutletofthepumphavetobedrainedap-
propriately,suckedoffordilutedwithinertgastonon-explosivemixtures.
☞ Pay attention to the symbol ”hot surfaces” on the equipment. Adopt suitable
measures to prevent any danger arising from the formation of hot surfaces or
electricsparks.Provideasuitableprotectionagainstcontactifnecessary.
☞ Ensurethattheexhaustpipelineisalwaysfreeandpressureless.
☞ Pumping at high inlet pressure may lead to overpressure at the gas ballast
valve. Pumped gases or condensate might be pushed out in case the valve is
open. If an inert gas supply is connected, ensure that the inlet pipeline is not con-
taminated.
☞ Attention: Ifthepressureishigherthanapproximately1080mbarthepressure
reading becomes incorrect (saturation of the pressure transducer). The display
ashes.Immediate pressure relief necessary! Risk of bursting!
NOTICE