The 2XZ series rotary vane vacuum pumps are widely used in various industrial applications for their reliability and efficiency. However, like all mechanical equipment, they can encounter operational issues. This article outlines common problems and their solutions to ensure optimal performance and longevity of the pumps.

1. Low Ultimate Vacuum

Potential Causes and Solutions:

1. Low Oil Level:
   • Symptom: Significant exhaust noise.
   • Solution: Add clean vacuum pump oil to the appropriate level.
2. Contaminated Pump Oil:
   • Symptom: Presence of condensable vapors.
   • Solution: Purge the pump using the gas ballast valve or replace the oil.
3. Leaks in External Connections:
   • Symptom: Loud exhaust noise and visible gas discharge at the exhaust port.
   • Solution: Identify and seal leaks in pipelines, containers, or connection joints.
4. Improperly Fitted Seals:
   • Symptom: Leaks around intake nozzle or gas ballast valve.
   • Solution: Adjust or replace damaged or aged rubber seals.
5. Clogged Oil Inlet:
   • Symptom: Restricted oil flow.
   • Solution: Clean the oil inlet to remove blockages.
6. Severe System Contamination:
   • Symptom: Poor vacuum performance.
   • Solution: Thoroughly clean the entire vacuum system, including containers and pipelines.
7. Broken Rotor Spring:
   • Symptom: Inconsistent rotor operation.
   • Solution: Replace the rotor spring.
8. Worn Rotor, Pump Body, or End Cap:
   • Symptom: Increased clearance and reduced efficiency.
   • Solution: Inspect and repair or replace worn components.
9. High Pump Temperature:
   • Symptom: Overheating.
   • Solution: Improve ventilation and cooling. If the gas temperature is too high, pre-cool the gas before it enters the pump.

2. Oil Spray

Potential Causes and Solutions:

1. Excessive Oil Level:
   • Solution: Drain the excess oil.
2. Contaminated Oil Mist Separator:
   • Solution: Clean the oil mist separator to remove any pump oil or debris.

3. Oil Leakage

Potential Causes and Solutions:

1. Improper Assembly of Drain Plug or Oil Tank Gasket:
   • Solution: Tighten the screws and ensure proper assembly.
2. Loose Oil Gauge:
   • Solution: Tighten the oil gauge and check for deformation due to overheating.
3. Improper Gasket Installation:
   • Solution: Adjust or replace gaskets between pump body components and support.
4. Worn Oil Seals:
   • Solution: Adjust or replace the oil seals.

4. 2XZ series rotary vane vacuum pumps Noise

Potential Causes and Solutions:

1. Broken Rotor Spring:
   • Solution: Replace the spring.
2. Presence of Burrs, Dirt, or Deformation:
   • Solution: Inspect, clean, and repair as necessary.
3. Worn Bearings or Parts:
   • Solution: Repair or replace worn components.
4. Motor Issues:
   • Solution: Inspect and address motor problems.

5. 2XZ series rotary vane vacuum pumps Oil Backflow

Potential Causes and Solutions:

1. Faulty Check Valve:
   • Solution: Reopen and close the pump, observe changes, or inspect the valve.
2. Improper Oil Seal Installation:
   • Solution: Adjust or replace oil seals inside the pump covers.
3. Uneven Pump Cover or Body Surface:
   • Solution: Smooth and adjust the surfaces.
4. Damaged Exhaust Valve:
   • Solution: Replace the exhaust valve.

Note: Use a compression-type mercury vacuum gauge for accurate vacuum measurements.

Contact Us

If you are interested in our 2XZ series rotary vane vacuum pumps, please contact us at contact@nuoxutech.com. You can also reach us on WhatsApp at +86 13849062209.Our team is ready to provide you with professional service and support.

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