Rotary Vane Vacuum System Troubleshooting Guide
system is:
WE SUGGEST YOU CHECK THIS:
A. The vacuum pump could have a defective discharge exhaust filter. For example, the filter could have a broken seam, allowing oil to flow past the filter and into the exhaust line.
B. The exhaust filter could be loose or not seated correctly. A worn or unseated gasket seal could be the cause. Like situation A above, the oil would be able to escape past the filter and into the exhaust line.
C. It could be that the vacuum pump is operating at too low a vacuum level. In such a situation, the pump could be moving an excessive level of air flow, or CFM, allowing a substantial amount of oil to escape out the discharge.
D. The pump could have a clogged scavenger line. Most rotary vane pumps have scavenger lines that scavenge the oil that normally passes the exhaust filters back to the pumping chamber.
