My $9 HF pump outperforms the 1.5CFM Robinair unit at the local shop
for both CFM and inches of Mercury, so I've never had any problems with it.
J.B.
At 11:50 PM 7/5/2006, you wrote:
On Wed, 05 Jul 2006 15:33:23 -0500 Loren Faeth <[EMAIL PROTECTED]>
wrote:
> Wow! good tip. I use one of the HF air/vacuum boxes with an old soda
> fire extinguisher to pull the oil out of the crankcase, but it never
> occurred to me to use it to pull a vacuum for refr.
>
> At 03:03 PM 7/5/2006, you wrote:
> >I'm by no means an expert, but here's my $0.02. I've had good luck
> >with Yellow Jacket gauges. If you are going to be doing both R12 and
> >R134a, make sure you get 2 separate gauge setups. The combo unit is
> >just asking for cross-contamination. I have also had excellent
> >success with the Harbor Freight venturi-style vacuum pumps that run
> >anywhere from $10 to $16, provided you have a powerful enough air
> >compressor to run it. I use a 220v 60 gallon unit which is
> >fine. Right now the one with the R134a connector is on sale for
> >$9.99. Heck of a lot cheaper than the self-powered stuff, and will
> >pull more than enough vacuum for A/C work.
Actually, no, they won't pull enough vacuum for A/C work.
Craig
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