View Full Version : vacum pump and oil ?
08-11-2012, 12:35 PM
We carry 7cfm vac pumps in our vans. I've had a few instances where my service hose gets filles with oil when pulling a vac on a small lineset. Is it the position of the vac pump and my manifold causing this. TIA Fitz
08-11-2012, 01:00 PM
Sounds like the checkvalve on the pump is bad. Once you turn the pump off the vacuum in the utility hose is pulling the oil out of your pump.
08-11-2012, 07:09 PM
08-11-2012, 07:28 PM
pull vacuum hose off pump as soon as you shut the pump off. ;)
08-11-2012, 08:30 PM
Check for oil overfill (look at sight glass while pump is running also) and close the pump valve before shutting down pump
08-11-2012, 10:02 PM
I had that same issue with my 7cfm. I solved it by using a hose with a ball valve on it. Close ball valve, turn off pump, party like a rockstar! :cheers:
08-12-2012, 12:32 AM
do you start/run vacuum with positive pressure? i have also had this happen with to much oil... good luck
08-12-2012, 10:44 AM
I shut the pump off and didn't close off my ball valve on my hose or shut the valve off on my pump. Thanks for all the advice.
Powered by vBulletin® Version 4.2.0 Copyright © 2013 vBulletin Solutions, Inc. All rights reserved.