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pump help please
http://www.talkcomposites.com/Topic1602.aspx
By boustie
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5/8/2012 3:46:12 PM
I have the following pump:
http://www.ebay.co.uk/itm/ECONOMY-3CFM-AIR-CONDITIONING-REFRIGERATION-VACUUM-PUMP-/310347158425?pt=LH_DefaultDomain_3&hash=item484221d399
It seems to pull to 0.9 bar not the full 1.0 bar
is this correct ?, if not is there anything i can do to seal the connections
thanks
Pete
By fgayford
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6/18/2012 12:00:47 AM
Hi Warren
I went through the exact same problem. I bought a new oil bath pump expecting 29.9 hg and got a lousey 27HG. I was ticked!
I had the seller come to my shop to check with a very accurate guage and it said I had full vaccuum. Turns out that the guage you have looks just like mine and is a piece of crap.
I spent the big bucks and bought an expensive liquid filled gauge and it reads correctly. I think Airtech manufactures the guage and It was under $50.00 dollars ( $35.00?)
been there done that.
Fred