NVE 4307 Series - User Manual

Questions and Answers

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Dawn WilliamsAug 12, 2025
Why is the inlet vacuum not what's expected in my NVE 4307 Blower?
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  Donna ParsonsAug 12, 2025
  If the inlet vacuum of your NVE Blower is not what you expect, consider these potential causes and solutions: * Check and clean the inlet plumbing and filter if they are clogged. * Verify the blower RPM and adjust it accordingly. * Empty the moisture trap or shut off of fluid if it's full. * Unplug or replace any plugged or collapsed hoses. * Repair any vacuum leaks in the tank or fittings. * Ensure the four-way valve is fully seated in the proper position, cleaning any debris buildup if necessary.
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pwebsterAug 16, 2025
What to do if the outlet pressure is not what's expected on my NVE 4307 Blower?
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  Sarah FisherAug 16, 2025
  If the outlet pressure of your NVE Blower is not what you expect, there are a few things to check: * Verify the blower RPM and adjust accordingly. * Clean the exhaust plumbing and mufflers to ensure they are not clogged. * Repair any vacuum leaks in the tank or fittings.
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gregorycarlsonAug 20, 2025
Why is my NVE Blower creating unusual noises or vibrations?
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  Adam ByrdAug 20, 2025
  If your NVE Blower is creating unusual noises or vibrations, it could be due to several reasons. The rotors might be worn, in which case you should verify internal clearances and replace or rebuild the blower as necessary. Worn bearings could also be the cause, requiring a blower rebuild. Additionally, if the rotor timing is off, having the blower rebuilt is the suggested solution.
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Alex LeonardAug 23, 2025
Why is the prime mover laboring excessively when driving my NVE 4307?
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  denise45Aug 23, 2025
  If the prime mover (engine or motor) is laboring excessively when driving the NVE blower, it could be due to a few reasons. Check the oil level in each tank and remove oil if it's too high. Also, check the alignment of the coupler or belts. If operating a diesel engine, ensure it's not at too low of an RPM, which can cause rotor contact; increase the engine RPM and adjust drive ratios accordingly, using a vibration dampened drive shaft.
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Michael SmithAug 27, 2025
How to fix a NVE 4307 that does not spin freely?
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  Charles ArnoldAug 27, 2025
  If the NVE blower does not spin freely, it could be due to several reasons. The rotors might be contacting each other, in which case you should stop the blower immediately and check the internal clearances. Another cause could be deposit build up on the cylinder wall, so clean the cylinder walls and rotors. Finally, an object might have been ingested into the blower; remove the object, clean the internal walls of the blower and check the internal clearances.
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Zachary SimpsonAug 31, 2025
What causes oil or liquid to leak from my NVE 4307 Blower?
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  Lauren BradleyAug 31, 2025
  If oil or liquid is leaking from your NVE blower, it could be due to worn oil tank gaskets, in which case you should replace them. Alternatively, the drive shaft seal might be worn; replace the shaft seal for the drive oil tank.
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Patricia HughesSep 3, 2025
Why is the oil temperature high in my NVE 4307 Blower?
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  Ashley VelezSep 3, 2025
  If the oil temperature of your NVE Blower is high, there are a few things to consider. The oil might be too thick, so use the correct viscosity oil. Alternatively, the oil could be foaming, so use the correct type of oil. Finally, the ballast plumbing could be clogged; check and clean the ballast plumbing, and if a ballast filter is installed, clean it as well.
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Carla Davis MDSep 7, 2025
What to do if the outlet temperature is not what's expected on my NVE Blower?
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  Christopher SantosSep 8, 2025
  If the outlet temperature of your NVE Blower is not what you expect, verify the inlet temperature is within specification and adjust accordingly.