welch-logo.png
Products
Vacuum Pumps
Belt Driven PumpsDuoSeal 1374DuoSeal 1376DuoSeal 1380DuoSeal 1397DuoSeal 1399DuoSeal 1400DuoSeal 1402DuoSeal 1405DuoSeal 1400W-01DuoSeal 1402W-01DuoSeal 1405W-01ChemStar 1400N-90ChemStar 1402N-90ChemStar 1376NChemStar 1400NChemStar 1402NCapture CRRBelt Kit 1397ABelt Kit 1399ABelt Kit 1400ABelt Kit 1405AMajor Repair Kit 1373K-06Major Repair Kit 1376K-06Major Repair Kit 1376K-10Major Repair Kit 1380K-04Major Repair Kit 1397K-08Major Repair Kit 1399K-04Major Repair Kit 1400K-04Major Repair Kit 1400K-10Major Repair Kit 1402K-06Major Repair Kit 1402K-10Major Repair Kit 1402K-47Minor Repair Kit 1373K-05Minor Repair Kit 1376K-05Minor Repair Kit 1376K-09Minor Repair Kit 1376K-46Minor Repair Kit 1397K-07Minor Repair Kit 1380K-03Minor Repair Kit 1399K-03Minor Repair Kit 1400K-03Minor Repair Kit 1400K-09Minor Repair Kit 1402K-05Minor Repair Kit 1402K-09Minor Repair Kit 1402K-46Seal Kit 1401EDuoSeal Oil
welch-logo.png

Forced Oil Flush for Rotary Vane Vacuum Pump

How to restore pump performance and extend service life with a targeted flush procedure

Rotary vane vacuum pumps can degrade over time due to oil contamination, carbon buildup, and residual moisture. These issues reduce vacuum efficiency, increase wear, and shorten service intervals. A forced oil flush is a fast, effective way to clean the pump internally without disassembly—restoring performance and reducing downtime.

This video demonstrates the correct forced oil flush procedure for rotary vane vacuum pumps used in medical and industrial applications. It covers when to flush, how to do it safely, and what results to expect.

Watch the Procedure

View the video walkthrough to see the full step-by-step process, including safety precautions and post-flush testing.

What You’ll Learn

  • When to flush: Indicators like reduced vacuum levels, noisy operation, or darkened oil.
  • How it works: Circulating clean oil through the pump while running to dislodge contaminants.
  • What to use: Recommended oil types and volumes for effective flushing.
  • Post-flush steps: How to inspect oil clarity, check vacuum levels, and log maintenance.

FAQs

Every 500–1000 operating hours, or when oil shows signs of contamination. Frequency depends on application intensity and ambient conditions.