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Thread: vacum pump and oil ?
08-11-2012, 12:35 PM #1
vacum pump and oil ?
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 #2
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 #3
Thanks....Chaos equals cash$$$
08-11-2012, 07:28 PM #4
pull vacuum hose off pump as soon as you shut the pump off.
08-11-2012, 08:30 PM #5Professional Member
- Join Date
- Aug 2012
- Hot Springs, Arkansas
Check for oil overfill (look at sight glass while pump is running also) and close the pump valve before shutting down pump
08-11-2012, 10:02 PM #6
I had that same issue with my 7cfm. I solved it by using a hose with a ball valve on it. Close ball valve, turn off pump, party like a rockstar!
08-12-2012, 12:32 AM #7Professional Member*
- Join Date
- Nov 2010
do you start/run vacuum with positive pressure? i have also had this happen with to much oil... good luck
08-12-2012, 10:44 AM #8
I shut the pump off and didn't close off my ball valve on my hose or shut the valve off on my pump. Thanks for all the advice.Chaos equals cash$$$