Pfeiffer Vacuum HILOBE 2704 User Manual (English)

Questions and Answers:

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umccormickAug 17, 2025
Why Pfeiffer Vacuum HILOBE 2704/pumping station does not reach ultimate pressure?
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  Sandra ClementsAug 17, 2025
  If your Pfeiffer Vacuum Water Pump/pumping station isn't reaching ultimate pressure, several factors could be at play. First, check the backing pump to ensure it's functioning correctly. Second, inspect the system for any leaks, conduct a leak test if needed, and eliminate any identified leaks. Also, verify the calibration of your measurement instruments. Finally, make sure auxiliary gases, like sealing gas or gas ballast, aren't unintentionally entering the vacuum pump. Another potential cause is condensate or other outgassing impurities in the operation fluid, in which case you should replace the lubricant.
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david88Aug 20, 2025
What to do if my Pfeiffer Vacuum Water Pump makes unusual noises during operation?
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  Miranda GloverAug 20, 2025
  If you notice unusual noises during the operation of your Pfeiffer Vacuum Water Pump, immediately switch it off. The suction chamber might be dirty, requiring cleaning. In case of damage to the bearing or gear wheels, or imbalance due to deposits on or in the pistons, switch off the vacuum pump immediately and contact Pfeiffer Vacuum Service. If the issue is imbalance due to deposits on or in the pistons, clean the pistons.
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Rachel KingAug 23, 2025
Why does my Pfeiffer Vacuum Water Pump switch off after a while after being started?
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  joseperezAug 23, 2025
  If your Pfeiffer Vacuum Water Pump switches off after starting, it could be due to the thermal protection switch of the motor or the vacuum pump being triggered. Determine the cause of the issue and fix it. Allow the vacuum pump or motor to cool down if necessary, and make sure to use the pump as intended. The thermal protection switch of the motor and/or the oil temperature sensors of the vacuum pump may also have triggered for the same reasons, so follow the same steps.
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Danny FosterAug 26, 2025
How to troubleshoot a Pfeiffer Vacuum HILOBE 2704 that does not start up and no LED lights up on the operator panel?
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  William RomeroAug 26, 2025
  If the vacuum pump does not start up, first check the mains voltage and the mains fuse to ensure they are correct. If these are not the cause, the electronic drive unit may be defective, in which case you should contact Pfeiffer Vacuum Service.
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Anne MorrisonAug 28, 2025
What to do if LEDs on the operator panel of Pfeiffer Vacuum HILOBE 2704 do not match the operating state?
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  Walter WilsonAug 28, 2025
  If the LEDs on the operator panel of your Pfeiffer Vacuum Water Pump don't match the operating state, it could be caused by a defective operator panel circuit board due to overvoltage or faulty pin assignment. It could also be that 24 V applied via third-party power supply with deviating potential. Replace the electronic drive unit RC and contact Pfeiffer Vacuum Service.
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Bobby OsborneAug 31, 2025
Why is my Pfeiffer Vacuum HILOBE 2704 not reaching ultimate pressure?
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  Roy HarringtonAug 31, 2025
  If your Pfeiffer Vacuum Water Pump isn't reaching the expected ultimate pressure, several factors could be at play. First, examine the backing pump to ensure it's functioning correctly. Next, check the entire system for any leaks, conduct a leak test if needed, and eliminate any found leaks. Also, verify the calibration of your measurement instruments. Finally, check to see if auxiliary gases, such as sealing gas or gas ballast, are inadvertently entering the vacuum pump. If there is condensate or other outgassing impurities in the operation fluid, replace the lubricant.
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sdiazSep 2, 2025
What to do if my Pfeiffer Vacuum Water Pump is making unusual noises?
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  Stacy PerrySep 2, 2025
  If your Pfeiffer Vacuum Water Pump is making unusual noises during operation, it could be due to a few reasons. Immediately switch off the pump and check the suction chamber for dirt and clean it. There might be damage to the bearing or gear wheels, in that case immediately switch off the vacuum pump. Another potential cause is an imbalance due to deposits on or in the pistons, so clean the pistons.
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Jose Chavez MDSep 5, 2025
How to troubleshoot a Pfeiffer Vacuum Water Pump that won't start and has no LED lights?
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  Melanie RodriguezSep 6, 2025
  If your Pfeiffer Vacuum Water Pump does not start up and no LED lights up on the operator panel of the electronic drive unit, check the mains voltage and the mains fuse. If these are not the cause, the electronic drive unit may be defective.
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Jeremy HollowaySep 8, 2025
Why does my Pfeiffer Vacuum HILOBE 2704 Water Pump turn off shortly after I start it?
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  Jeremiah WeberSep 8, 2025
  If your Pfeiffer Vacuum Water Pump switches off after starting, it's possible the thermal protection switch of the motor or the vacuum pump has been triggered. Determine what caused this and fix the issue. Allow the pump or motor to cool down. Ensure you are using the pump as intended. It is also possible that the thermal protection switch of the motor and/or the oil temperature sensors of the vacuum pump have triggered. Determine what caused this and fix the issue. Allow the pump or motor to cool down. Ensure you are using the pump as intended.
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mccarthypamelaSep 12, 2025
What to do if my Pfeiffer Vacuum Water Pump will not start up?
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  wbergSep 12, 2025
  If your Pfeiffer Vacuum Water Pump will not start up, immediately switch it off and clean the suction chamber. If the problem persists, the device may be defective.