Pfeiffer Vacuum ThermoStar GSD 350 T3 User Manual (English)

Questions and Answers:

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Jessica MendozaSep 10, 2025
How to fix a dark display on Pfeiffer Vacuum Measuring Instruments?
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  Michael FrenchSep 12, 2025
  If the display remains dark after switching on your Pfeiffer Vacuum Measuring Instruments, there might be several reasons: * There is no supply voltage at the unit. Check the mains connection and mains cable. * The mains fuses (2×10 AT) are defective. Replace the mains fuses. * The display cable is loose. Check the plug-and-socket connection on the display and on the PoE in the GSD 350. * The power supply cable between PoE and supervisor board is loose. Check the plug-and-socket connection of the power supply cable between PoE and supervisor board.
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Shawn JimenezSep 12, 2025
What to do if the venting valve fails to open after the Vent command in Pfeiffer Vacuum ThermoStar GSD 350 T3 Measuring Instruments?
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  Renee GarciaSep 12, 2025
  If, after the "Vent" control command, the venting valve fails to open on your Pfeiffer Vacuum Measuring Instruments, consider the following: * Wait until the turbopump’s rotation speed is < 750 Hz if the turbopump rotation speed is still > 750 Hz. * Check the plug-and-socket connections on the venting valve and the supervisor board if the venting valve is not controlled. * Replace the venting valve if it is polluted. * Replace the venting valve if it is defective.
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mendezkeithSep 14, 2025
Why are no mass peaks visible when calibrating the mass scale on Pfeiffer Vacuum ThermoStar GSD 350 T3 Measuring Instruments?
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  ikingSep 14, 2025
  If no mass peaks are visible in range > 200 u when calibrating the mass scale (for version with calibration unit) on your Pfeiffer Vacuum Measuring Instruments, it could be due to: * Low sensitivity of the mass spectrometer. Read the mass spectrometer operating instructions for details. * Low stock of calibration medium. Top up the calibration medium. * Shut-off valve on calibration unit is not controlled. Check the plug-and-socket connections on the shut-off valve and the supervisor board. * Shut-off valve on calibration unit polluted. Replace shut-off valve on calibration unit. * Shut-off valve on calibration unit defective. Replace shut-off valve on calibration unit.