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Thread: Vacuum problems!!!!!
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01-08-2006, 10:10 PM #1
Vacuum problems!!!!!
I’ve had a problem getting down to and keeping an acceptable vacuum, to the point that I have blanked the vac hose and evacuated just the hose (no manifold), and I am getting a vacuum degradation of a few mbar/min, so I did the same with the charging hose with similar results, so do I have a number of shot hoses or is there something else going on here? There is a lot of compressor oil in the hoses could this be off gassing? Once I pump down I run the pump for around 15-20min, is this enough to clear the volatiles (3/8” hose only)? Any input welcome.
JAG
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01-08-2006, 10:33 PM #2
Re: Vacuum problems!!!!!
Hoses could be failing, end seals could be bad; pump connector threads leaking, Schraeder connector damaged.
Sounds more as though there is a problem at the pump end; check all access ports for well sealed threads, cracks, seals, etc.Brian - Newton Abbot, Devon, UK
Retired March 2015
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01-08-2006, 10:43 PM #3
Re: Vacuum problems!!!!!
JAGw
if you work for a company thats as **** as the one i work for, just go and buy a new pump and hoses, get a new reclaim unit while there and just for good measure why not get some quick couplers a torr gague etc etc
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01-08-2006, 11:03 PM #4
Re: Vacuum problems!!!!!
Originally Posted by acgiboBrian - Newton Abbot, Devon, UK
Retired March 2015
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01-08-2006, 11:27 PM #5
Re: Vacuum problems!!!!!
...the vac pump and Vac adaptor tree caped off hold fine, add a hose, any hose and i get this degradation, i will try again tomorow when I ahve more time.
Any one had this apparant off gassing of the residual oil?
Hi vac oils are a not high temp compressor oils, or am I barking up the wrong tree? Or just barking!
JAGw
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04-08-2006, 10:43 PM #6
Re: Vacuum problems!!!!!
just a thought jagw
are you sure the adaptor is the correct size for the lines you are using? dont know much about engineering but i gather they measure things in silly tiny amounts, and it is possible that it has been engineered to a slightly different size.
like i say, just a thought
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05-08-2006, 09:18 AM #7
Re: Vacuum problems!!!!!
Originally Posted by acgibo
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05-08-2006, 11:13 PM #8
Re: Vacuum problems!!!!!
Glad that you've found the problem.
Brian - Newton Abbot, Devon, UK
Retired March 2015
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