page 28 of 106Installing a pump in a vacuum system+ Connect a gas-tight exhaust line at the pump outlet ifnecessary. Always vent exhaust gases appropriately(e.g., into a fume hood). If dangerous or polluting fluidscould be released at the outlet, install an appropriatesystem to catch and dispose of those fluids.+ Never block the gas outlet. The exhaust line must al-ways be free of obstructions (no back pressure) to en-sure an unimpeded discharge of gas. The cross-sec-tion of the outlet tubing must be at least the size of thepump’s exhaust connection.• Reduce the transmission of vibration. Prevent mechan-ical load due to rigid pipelines. Insert elastic hoses orflexible elements as couplings between the pump andrigid pipes. Note: Flexible elements will compress orflatten when evacuated if not designed for use undervacuum.Hose connections at the pump inlet must always be gastight. Particles and dust must not be aspirated. If neces-sary, you must install appropriate filters. You must ensuretheir suitability concerning gas flow, chemical resistanceand resistance to clogging prior to use.NOTICEUse and operationWhen switching on the controller CVC 3000 for the very first time, a menuto select the language of the controller menu is displayed. Select the de-sired language (e.g., ”English”) by turning the selection knob and pressto confirm. Then select the pressure unit (”mbar”, ”Torr” or ”hPa”) in thesame way.It is possible to access the language selection menu at any timeby switching on the controller while keeping the selection knobpressed.