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User guide

ManualsBrandsHeidolph ManualsEquipmentROTAVAC Vario pumping unit
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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
☞ Select function ”Pump down”. ”Speed”: ”HI” is recommended. For gel dryers set a lower speed if
necessaryifthegelstendtobreak.
☞ Set ”Minimum” to prevent volatile components to evaporate. The process is stopped automatically as
soon as ”Minimum” is reached.
☞ Set a process time (”Duration”) if necessary.
☞ Startprocessbypressingkey”START/STOP”.
alternatively:
☞ Select function ”Vac control” to dry at a predetermined vacuum level.
☞ Set ”Set vacuum” to the evaporation vacuum of the solvent.
☞ Set a process time (”Duration”) if necessary.
☞ Startprocessbypressingkey”START/STOP”.
5.7 Examples for use
Assembly of a vacuum system
☞ Assemble vacuum connection lines between controller, vacuum pump and apparatus.
☞ Assemble electrical connections.
☞ Connect coolant if necessary.
5.7.1 Vacuum for ltration and suction
☞ Select function ”Pump down”.
☞ If necessary set value for ”Speed” (high or low pumping speed). Reduce the speed in case of fast
sedimentation(formationofaltercake).
☞ Set ”Minimum” to a value which still does not lead to evaporation of the solvent.
☞ Startprocessbypressingkey”START/STOP”.
alternatively:
☞ Select function ”Vac control”.
☞ If necessary set value for ”Speed” (high or low pumping speed). Reduce the speed in case of fast
sedimentation(formationofaltercake).
☞ Set ”Maximum”toswitchoffthepumpattheendoftheprocessorincaseofaltercakecrack(pres-
sure increase).
☞ Startprocessbypressingkey”START/STOP”.
☞ Tip for ltration: Adjust preset pressure to a value well above the boiling pressure of the solvent
(e.g.water>>20mbar).Setthemaximumpressuretoe.g.500mbar.Oncetheltrationhasnished,
the pressure increases and the pump is switched off automatically.
5.7.2 Vacuum for gel dryer, drying chambers and vacuum concentrators