vacuubrand PC 510 NT Instructions For Use Manual

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Contents

vacuubrand PC 510 NT Instructions For Use Manual Manual pdf 52 page image

page 52 of 106Program function➨ Permits ten programs to be defined and stored, each with up toten program steps with preset values for vacuum and time.+ Edit:Use to define the preset values for the process run:Time: Defines either the process runtime for each program step toreach a preset vacuum level or, if programming a ”Step”, the runtimeafter having achieved the vacuum level. The total process runtime isshown in the base line. Attention: A preset runtime of 99:59:59 hoursin the final program step will cause the process to run endlessly. Ter-minate the process by pressing the ”START/STOP” key .Vacuum: Vacuum level to be attained.Venting valve: Operating a venting valve to reach a preset vacuumlevel.”Step”: ”Step” causes pump down as fast as possible to the presetvacuum level. As soon as the vacuum level is reached the time meterstarts running.+ Open: Choose program (Programs 0 - 9).+ Store: This command stores an edited program or the program of thelast process to one of the storage spaces 0 - 9.+ Hysteresis: The ”Hysteresis” is the control bandwidth of the two-pointcontrol. A too small hysteresis will lead to frequent switching of thevalve or the pump. A too large hysteresis will lead to imprecise con-trol. Suggested ”Hysteresis” values are stored in the controller (setup”Auto”) and are adapted automatically to the preset pressure. The hys-teresis can be adapted at any time.The ”Hysteresis” is adjustable in a range of 1-225 Torr (1-300 mbar) orcan be set to ”Auto”.+ Delay: ”Delay” determines the time the pump (with VMS module andin-line valve) remains running and the coolant valve remains open af-ter the process has been stopped.The ”Delay” is adjustable in a range of 1-300 minutes or can be set to”Off” (”Off” means that when the process stops, the pump is switchedoff and the coolant valve closes immediately.).