Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefullythe validity of this document with respect to his product. Manual-no.: 999122 / 02/09/2009page 5 of 21☞ Ensure that the system design does not allow the exhaust pipeline to becomeblocked unintentionally.☞ Avoid overpressure of more than 0.2 bar at the inlet in case inert gas is connected.☞ The diameter of the inlet and outlet pipeline should be at the least as large as thediameter of the pump connection pipelines.To the best of our knowledge the equipment is in compliance with the requirements ofthe applicable EC-directives and harmonized standards (see ”Declaration of conform-ity”) with regard to design, type and model, especially directive IEC 1010. This direc-tive gives in detail conditions, under which the equipment can be operated safely (seealso IP degree of protection).☞ Adopt suitable measures in case of differences, e. g. using the equipment out-doors, installation in altitudes of more than 1000 m above mean sea level, conduc-tive pollution or dewiness.Pay attention to symbol ”hot surfaces” on the equipment (according to IEC 1010 rec-ommendation).☞ Adopt suitable measures to prevent any danger arising from the formation of hotsurfaces or electric sparks.The pumps have no approval for operation in or for pumping of potentially ex-plosive atmospheres.If pumping different substances, purge the pump with inert gas prior to changing thepumped media in order to pump out residues and to avoid reactions of the pumpedsubstances with each other with and the pump material. Ensure that the materials ofthe wetted parts are compatible with the pumped substances, see section ”Technicaldata”.Take into consideration interactions and chemical reactions of the pumped me-dia.The pumps are not suitable for pumping substances which may form deposits in-side the pump.☞ If there is a danger of the formation of deposits in the pump chamber (check inletand outlet of the pump) inspect the pump chamber regularly and clean if neces-sary.The pumps are not suitable to pump unstable substances and substances whichreact explosively under impact (mechanical stress) and/or when being exposed toelevated temperatures without air.The pumps are not suitable to pump self inflammable substances, substances whichare inflammable without air and explosive substances.The pumps are not suitable for pumping dust and have no approval for operationbelow ground.Ensure that the materials of the wetted parts are compatible with the pumped sub-stances, see section ”Technical data”.☞ Adopt suitable measures to prevent the release of dangerous, explosive, corrosiveor polluting fluids.☞ Use inert gas for venting if necessary.☞ The user must take suitable precautions to prevent any formation of explosivemixtures in the expansion chamber. In case of a diaphragm crack, mechanicallygenerated sparks, hot surfaces or static electricity may ignite these mixtures.☞ Take adequate precautions to protect people from the effects of dangerous sub-stances (chemicals, thermal decomposition products of fluoroelastomers), wearappropriate safety-clothing and safety glasses.☞ Obey applicable regulations when disposing of chemicals. Take into considerationthat chemicals may be polluted.