vacuubrand MZ 2C NT VARIO User Manual (English)

Questions and Answers:

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Edward GrayAug 25, 2025
Why doesn't my VACUUBRAND Laboratory Equipment pump achieve ultimate vacuum?
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  Hunter GardnerAug 25, 2025
  If your VACUUBRAND pump isn't reaching its ultimate vacuum or usual pumping speed, check the centring ring at the small flange connection for correct positioning and inspect the pipeline and vacuum system for leaks. Ensure the controller setting is correct by selecting the ''Pump down'' function with the speed set to ''HI''. Use vacuum lines with a larger diameter and keep them as short as possible. If the pump has been exposed to condensate, allow it to run for a few minutes with atmospheric pressure at the inlet to purge. Clean and inspect the pump heads for deposits. Replace diaphragms and/or valves if they are damaged. Check process parameters for outgassing substances or vapor generation.
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Brent DuncanAug 25, 2025
What to do if VACUUBRAND Laboratory Equipment pump does not start?
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  Samuel MoralesAug 26, 2025
  If your VACUUBRAND Laboratory Equipment pump doesn't start or stops immediately, and the warning triangle and pump symbol are flashing, it might be due to a few reasons. If the pump has been exposed to condensate, allow it to run for a few minutes at maximum speed with atmospheric pressure at the inlet. Check for overpressure in the outlet line by removing any blockage or opening the valve. If the motor is overloaded, allow it to cool down, identify, and eliminate the cause of failure, then manually reset it by switching off the pump or unplugging it.
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Phyllis WardAug 27, 2025
Why does the display disappear on my VACUUBRAND Laboratory Equipment?
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  Patricia WhitneyAug 27, 2025
  If the display on your VACUUBRAND Laboratory Equipment disappears, check the current draw of the connected devices to ensure there isn't too much load. Inspect connected valves for short circuits and replace them if necessary. Also, check the RS 232 plug and cable for any short circuits.
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Edward NicholsAug 27, 2025
What causes incorrect pressure readings in VACUUBRAND Laboratory Equipment?
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  Robin MelendezAug 27, 2025
  If the pressure reading on your VACUUBRAND Laboratory Equipment is incorrect, readjust the CVC 3000. If there's humidity in the measurement chamber, let the pressure transducer dry by pumping and readjust if necessary, also determine and eliminate the cause for humidity. If the pressure transducer is contaminated, refer to the section on cleaning the pressure transducer.
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Katherine TorresSep 13, 2025
What to do if vacuubrand Water Pump stops and arrow down is flashing?
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  ycalhounSep 13, 2025
  If your vacuubrand Water Pump stops during "Pump down" mode and the "arrow down" is flashing, it indicates that the pressure is below the preset minimum. Confirm by pressing the START/STOP key and adjust the minimum pressure value if necessary.
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joeperezSep 12, 2025
Why is the digital pressure reading flashing on my vacuubrand Water Pump?
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  John MerrittSep 12, 2025
  If the digital pressure reading is flashing and the display shows "0.0" on your vacuubrand Water Pump, the pressure transducer may not be correctly adjusted under vacuum. Adjust the CVC 3000 correctly.
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Angela RamirezSep 12, 2025
What to do if vacuubrand Water Pump stops and arrow up is flashing?
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  thomasriceSep 12, 2025
  If your vacuubrand Water Pump stops during "Vac control" mode and the "arrow up" is flashing, it means the preset maximum pressure has been exceeded. Confirm by pressing the START/STOP key and adjust the maximum pressure value if necessary.
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Zachary ElliottSep 4, 2025
How to fix no display on vacuubrand Water Pump?
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  joshua68Sep 4, 2025
  If there is no display on your vacuubrand Water Pump, consider the following: * Check if the mains plug is properly connected to the NT VARIO / VARIO-B pump and plug it in. * Ensure that the controller CVC 3000 or pump NT VARIO / VARIO-B is switched on. * Verify the VACUU • BUS cable is correctly plugged into the controller CVC 3000.
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Stephanie RobertsSep 2, 2025
What to do if VACUUBRAND Laboratory Equipment venting valve does not respond?
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  Crystal MunozSep 2, 2025
  If the venting valve does not respond and the valve symbol is displayed on your VACUUBRAND Laboratory Equipment, the venting valve might be contaminated. Clean the valve.
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Duane MunozSep 3, 2025
Why vacuubrand Water Pump does not achieve ultimate vacuum?
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  christinabakerSep 3, 2025
  Your vacuubrand Water Pump might not be reaching its optimal vacuum or pumping speed due to several reasons: * Incorrect controller settings: Ensure the operation mode is set to 'Pump down' with the speed set to 'HI'. * Incorrectly positioned centering ring or leaks: Check the pump directly by connecting the CVC 3000 to the pump inlet. Then inspect the connection, pipeline, and vacuum system for leaks. * Long, narrow lines: Use lines with a larger diameter and keep them as short as possible. * Condensate exposure: Allow the pump to run for a few minutes at maximum speed with atmospheric pressure at the inlet. * Internal deposits: Clean and inspect the pump heads.