Talk Composites - The Forum for Advanced Composites

Can't pull Full vaccum only 90% and noise

http://www.talkcomposites.com/Topic8451.aspx

By giganoto - 11/11/2013 2:48:26 PM

Hi I ordered VI Starter kit.

My Vaccum pump is working but It looks little bit out of order

It pulls vaccum until 90% well. but when it comes to 90% and about 5seconds later,  It's noise nevel is much louder. and it can't proceed more than 90%

I hope vaccum gage is not accurate.. but noise sounds out of order. The sealing is perfect (I onlt test with the catch pot and when I turn off the turn valve, there is no leak)





and when I turn off the vaccum pump without turn valve off, the air leaks from the vaccum pump quite fast. is it OK?
By ChrisR - 11/12/2013 4:47:12 PM

unscrew the connector & valve from the pump, clean the threads and put back together with PTFE tape around the threads (plumbers tape) as this will help seal (or elimate this as an issue)